As filed with the Securities and Exchange Commission on June 4, 2021.

Registration No. 333-256452

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

AMENDMENT No. 1

to

FORM F-1

REGISTRATION STATEMENT

UNDER

THE SECURITIES ACT OF 1933

TREMOR INTERNATIONAL LTD.

(Exact Name of Registrant as Specified in its Charter)

Tremor International Ltd.

82 Yigal Alon Street

Tel Aviv, 6789124, Israel

+972-3-545-3900

(Address, including zip code, and telephone number, including area code, of Registrant’s principal executive offices)

Puglisi & Associates

850 Library Avenue, Suite 204

Newark, DE 19711

(302)-738-6680

(Name, address, including zip code, and telephone number, including area code, of agent for service)

Copies to:

Approximate date of commencement of proposed sale to the public:

As soon as practicable after the effective date of this registration statement.

If any of the securities being registered on this form are to be offered on a delayed or continuous basis pursuant to Rule 415 under the Securities Act of 1933, check the following box.  ☐

If this form is filed to register additional securities for an offering pursuant to Rule 462(b) under the Securities Act, check the following box and list the Securities Act registration statement number of the earlier effective registration statement for the same offering.  ☐

If this form is a post-effective amendment filed pursuant to Rule 462(c) under the Securities Act, check the following box and list the Securities Act registration statement number of the earlier effective registration statement for the same offering.  ☐

If this form is a post-effective amendment filed pursuant to Rule 462(d) under the Securities Act, check the following box and list the Securities Act registration statement number of the earlier effective registration statement for the same offering.  ☐

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933. Emerging growth company  ☒

If an emerging growth company that prepares its financial statements in accordance with U.S. GAAP, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 7(a)(2)(B) of the Securities Act.  ☐

CALCULATION OF REGISTRATION FEE

The registrant hereby amends this registration statement on such date or dates as may be necessary to delay its effective date until the registrant shall file a further amendment which specifically states that this registration statement shall thereafter become effective in accordance with Section 8(a) of the Securities Act of 1933, as amended, or until the registration statement shall become effective on such date as the Securities and Exchange Commission, acting pursuant to said Section 8(a), may determine.

The information in this preliminary prospectus is not complete and may be changed. We may not sell these securities until the registration statement filed with the Securities and Exchange Commission is effective. This prospectus is not an offer to sell these securities and we are not soliciting offers to buy these securities in any state where the offer or sale is not permitted.

SUBJECT TO COMPLETION, DATED JUNE 4, 2021

PRELIMINARY PROSPECTUS

American Depositary Shares

Representing                      Ordinary Shares

This is the initial public offering of Tremor International Ltd. in the United States. We are offering American Depositary Shares (“ADSs”) with each ADS representing the right to receive                  ordinary shares. We intend to apply to have our ADSs listed on the Nasdaq Global Market (“Nasdaq”) under the symbol “TRMR.”

Our ordinary shares trade on AIM, a market of the London Stock Exchange, under the symbol “TRMR.” On                 , 2021, the last reported sale price of our ordinary shares on AIM was £             per ordinary shares (equivalent to $             per ADS based on an assumed exchange rate of £1.00 to $1.            ).

We are both an “emerging growth company” and a “foreign private issuer” as defined under the U.S. federal securities laws and, as such, may elect to comply with certain reduced public company reporting requirements. See “Summary—Implications of Being an Emerging Growth Company and a Foreign Private Issuer.”

We have granted the underwriters an option to purchase up to                  additional ADSs from us at the public offering price, less underwriting discounts and commissions, within 30 days from the date of this prospectus.

Investing in our ADSs involves risks. See “Risk Factors” beginning on page 20 to read about factors you should consider before purchasing any of our ADSs.

Neither the Securities and Exchange Commission nor any state securities commission has approved or disapproved of these securities or determined if this prospectus is truthful or complete. Any representation to the contrary is a criminal offense.

The underwriters expect to deliver the ADSs to purchasers on or about                , 2021.

Prospectus dated                 , 2021

TREMOR INTERNATIONAL Ltd. A Global Leader in All-Screen Video Advertising Technologies

TREMOR INTERNATIONAL Ltd. OUR MISSION To provide an automated marketplace for advertisers & publishers that leverages advanced data-driven technology to deliver impactful brand stories for audiences across the globe

TREMOR INVESTMENT HIGHLIGHTS END-TO-END PLATFORM Proprietary, leading-edge solution comprised of our integrated DSP, DMP and SSP INDUSTRY LEADERSHIP IN VIDEO AND CTV Established expertise and customer adoption in video & CTV POISED FOR FUTURE GROWTH Via continued innovation and global expansion GLOBAL SCALE Ensures wide reach among global consumer audiences, advertisers and publishers ROBUST DATA SET ML/DL Fully integrated into our platform for accurate targeting and ROI MANAGEMENT TEAM Industry veterans with extensive global experience

T R E M O R D M P DSP SSP Audiences OUR “END-TO-END” TECHNOLOGY PLATFORM 100 BILLION DAILY AD REQUESTS 500 TERABYTES OF DAILY DATA PROCESSED 250 MILLION OF DAILY AD IMPRESSIONS 100 MILLION DAILY UNIQUE SITES/APPS DEMAND-SIDE DATA MANAGEMENT SUPPLY-SIDE walgreens MAZDA DIAGEO MARS P& G Benefits to advertisers Optimizing & increasing audience reach & engagement Robust data assets Omni-channel connectivity, optimizing campaign impact Creative capabilities Benefits for publishers Premium, high-value campaigns representing a wide range of advertisers First and third-party data, maximizes revenue generation Flexibility via wide breadth of ad formats UnrulyX CTRL, a proprietary insights & reporting dashboard, facilitating Direct, Preferred, and Open Auction programmatic deals A D V E R T I S E R S P U B L I S H E R S VIDEO FOCUS MASSIVE REACH TV RETARGETTING SAAS & MANAGED OFFERING SAAS & MANAGED OFFERING OMNICHANNEL CREATIVE STUDIO EXCLUSIVE SUPPLY TREMOR INTERNATIONAL LTD.

DSP: OPTIMIZE ADVERTISING & IMPROVE CAMPAIGNS ROI Access to wide-reaching and high-quality ad inventory, audience targeting and VIDEO FOCUS advanced reporting SAAS & MANAGED Designed to empower advertisers to OFFERING optimize their video & CTV campaigns for efficiency & ROI using AI and ML/DL TV RETARGETING for automation Self-service solution for advertisers and CREATIVE STUDIO agencies enabling them more control over control planinng and execution Managed-service optionality enables advertisers to benefit from the experience and guidance of our team of experts DEMAND-SIDE +1,200 BRANDS Managed and Self-Service DSP +400 AGENCIES

DMP: REAL-TIME, THROUGH INTELLIGENT DATA-DRIVEN DECISION-MAKING INSIGHTS Fully integrated and flexible solution sitting at the center of the platform Provides real-time, device-agnostic, and data-driven marketing maximizing campaign performance & impact Leveraging first and third-party data to identify and reach curated audiences DATA MANAGEMENT EMOTION-BASED INSIGHTS (EQ) M O R E D ✔   AD VERIFICATION TR M P GEO/LOCATION-BASED TARGETING AUTOMATIC CONTENT RECOGNITION (ACR) AUDIENCE ATTRIBUTES & BEHAVIORS CONTEXTUALIZED TARGETING TREMOR INTERNATIONAL Ltd.

SSP DSP DSP Self- Service PMP OMP WEB PUBLISHERS MOBILE PUBLISHERS CTV PUBLISHERS SSP: OPTIMIZE INVENTORY MANAGEMENT & REVENUE YIELD Self-service solution for advertisers and agencies, enabling them more control over planning and execution Access to large data sets, unique demand (Tremor DSP) and private marketplaces (PMPs) Direct relationships with omni-channel publishers & platforms facilitating supply path optimization process for all parties Model-driven KPI & yield automation increases publishers’ inventory value while delivering higher performance for advertisers SAAS & MANAGED OFFERING MASSIVE REACH EXCLUSIVE SUPPLY SUPPLY-SIDE ~1,450 PUBLISHERS

Tremor International Ltd. 82 Yigal Alon st.    (13th floor)    Tel-Aviv     Israel    6789124 info@tremorinternational.com

TABLE OF CONTENTS

Neither we nor the underwriters have authorized anyone to provide any information or to make any representation other than those contained in this prospectus, any amendment or supplement to this prospectus or in any free writing prospectus prepared by us or on our behalf. Neither we nor the underwriters take any responsibility for, and neither we nor the underwriters can provide any assurance as to the reliability of, any information other than the information in this prospectus, any amendment or supplement to this prospectus and any free writing prospectus prepared by us or on our behalf. Neither the delivery of this prospectus nor the sale of our ADSs means that information contained in this prospectus is correct after the date of this prospectus. This prospectus is not an offer to sell or the solicitation of an offer to buy these ADSs in any circumstances under which such offer or solicitation is unlawful.

The ADSs offered by this prospectus have not been approved or disapproved by the Israel Securities Authority (the “ISA”), nor have such ADSs been registered for sale in Israel. The ADSs may not be offered or sold, directly or indirectly, to the public in Israel, absent the publication of a prospectus that has been approved by the ISA.

For investors outside the United States: Neither we nor any of the underwriters have taken any action that would permit this offering or possession or distribution of this prospectus in any jurisdiction where action for that purpose is required, other than in the United States. You are required to inform yourselves about and to observe any restrictions relating to this offering and the distribution of this prospectus.

Through and including            , 2021 (the 25th day after the date of this prospectus), all dealers that effect transactions in the ADSs, whether or not participating in this offering, may be required to deliver a prospectus. This in addition to the dealer’s obligation to deliver a prospectus when acting as underwriters and with respect to their unsold allotments or subscriptions.

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ABOUT THIS PROSPECTUS

As used in this prospectus, except where the context otherwise requires or where otherwise indicated, references to “Tremor,” the “Company,” “we,” “us,” “our,” “our company,” “our business” and similar references refer to Tremor International Ltd., together with its consolidated subsidiaries as a consolidated entity.

BASIS OF PRESENTATION

Our financial statements have been prepared in accordance with International Financial Reporting Standards (“IFRS”) as issued by the International Accounting Standards Board (the “IASB”). We present our consolidated financial statements in U.S. dollars. This prospectus includes: (i) the audited consolidated financial statements of the Company as of and for the years ended December 31, 2020 and 2019 prepared in accordance with IFRS and audited by Somekh Chaikin, a member firm of KPMG International and (ii) the unaudited condensed consolidated interim financial statements of the Company as of and for the three months ended March 31, 2021 and 2020 prepared in accordance with International Accounting Standards 34, Interim Financial Reporting (“IAS 34”). The audited consolidated financial statements of the Company as of and for the year ended December 31, 2019 are not directly comparable with the audited consolidated financial statements of the Company as of and for the year ended December 31, 2020, and the unaudited condensed consolidated interim financial statements of the Company as of and for the three months ended March 31, 2021 and 2020. This is due to the integration of acquisitions over the course of 2019 and 2020 and the development of the Company’s platform over that time. In consideration of many indicators, we determined that through the year ended December 31, 2019, we acted as principal and beginning with the year ended December 31, 2020, we are now acting as agent under IFRS 15, and thus effective January 1, 2020, we recognize revenue on a net basis for our Programmatic activity, which had been recognized on a gross basis historically, including for the year ended December 31, 2019. See “Management’s Discussion and Analysis of Financial Condition and Results of Operations—Critical Accounting Policies, Judgments and Estimates—Revenue Recognition” for information regarding the revenue recognition presentation change. In order to improve comparability and provide a more meaningful basis for comparison of our financial results, this prospectus includes certain unaudited, as adjusted (non-IFRS) revenue information solely for the year ended December 31, 2019 that give effect to the revenue recognition changes noted above as if such changes were applied on January 1, 2019. This as adjusted (non-IFRS) revenue information will not be provided for any period subsequent to the year ended December 31, 2019.

Our fiscal year ends on December 31 of each year.

Certain monetary amounts, percentages and other figures included elsewhere in this prospectus have been subject to rounding adjustments. Accordingly, figures shown as totals in certain tables or charts may not be the arithmetic aggregation of the figures that precede them, and figures expressed as percentages in the text may not total 100% or, as applicable, when aggregated may not be the arithmetic aggregation of the percentages that precede them.

Throughout this prospectus, we provide a number of key performance indicators used by our management and often used by others in our industry. These and other key performance indicators are discussed in more detail in the section entitled “Management’s Discussion and Analysis of Financial Condition and Results of Operations—Key Performance Indicators and Other Operating Metrics.” We define these key performance indicators as follows:

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MARKET AND INDUSTRY DATA

Unless otherwise indicated, information in this prospectus concerning economic conditions, our industry, our markets and our competitive position is based on a variety of sources, including information from independent industry analysts and publications, as well as our own estimates and research.

Our estimates are derived from publicly available information released by third-party sources, as well as data from our internal research, which we believe to be reasonable. None of the independent industry publications used in this prospectus were prepared on our behalf.

Certain estimates of market opportunity and forecasts of market growth included in this prospectus may prove to be inaccurate. The estimates and forecasts in this prospectus relating to the size of our target market, market demand and adoption, capacity to address this demand and pricing may prove to be inaccurate. The addressable market we estimate may not materialize for many years, if ever, and even if the markets in which we compete meet the size estimates in this prospectus, our business could fail to grow at similar rates, if at all.

Forecasts and other forward-looking information obtained from these sources are subject to the same qualifications and uncertainties as the other forward-looking statements in this prospectus. See “Risk Factors” and “Special Note Regarding Forward-Looking Statements.”

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TRADEMARKS

We or our licensors have proprietary rights to trademarks, copyrights, trade names or service marks used in this prospectus that are important to our business, many of which are registered under the applicable intellectual property laws. Solely for convenience, the trademarks, trade names and service marks referred to in this prospectus may appear without the “^®” or “^™” symbols, but such references are not intended to indicate, in any way, that we will not assert, to the fullest extent possible under applicable law, our rights or the rights of the applicable licensor to these trademarks, trade names and service marks. This prospectus also contains trademarks, copyrights, tradenames and service marks of other companies, which are the property of their respective owners. We do not intend our use or display of other companies’ trademarks, copyrights, trade names or service marks to imply a relationship with, or endorsement or sponsorship of us by, any other companies. Each trademark, copyright, trade name or service mark of any other company appearing in this prospectus is the property of its respective holder.

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RISK FACTORS

You should carefully consider the risks described below before making an investment decision. Additional risks not presently known to us or that we currently deem immaterial may also impair our business operations. Our business, financial condition or results of operations could be materially and adversely affected by any of these risks. The trading price and value of our ADSs could decline due to any of these risks, and you may lose all or part of your investment. This prospectus also contains forward-looking statements that involve risks and uncertainties. Our actual results could differ materially from those anticipated in these forward-looking statements as a result of certain factors, including the risks faced by us described below and elsewhere in this prospectus.

Risks Relating to Our Business

Our success and revenue growth is dependent on adding new advertisers and publishers, effectively educating and training our existing advertisers and publishers on how to make full use of our platform and increasing usage of our platform by advertisers and publishers.

Our success is dependent on regularly adding new advertisers and publishers and increasing their usage of our platform. Our contracts and relationships with advertisers and publishers generally do not include long-term or exclusive obligations requiring them to use our platform or maintain or increase their use of our platform. Advertisers and publishers typically have relationships with numerous providers and can use both our platform and those of our competitors without incurring significant costs or disruption. They may also choose to decrease their overall advertising spend for any reason, including if they do not believe they are receiving a sufficient return. Accordingly, we must continually work to add new advertisers and publishers to our customer base, retain our existing advertisers and publishers, increase their usage of our platform and capture a larger share of their advertising spend.

We may not be successful at educating and training advertisers and publishers, especially new ones, on how to use our platform in order for them to most benefit from our platform and increase their usage. If these efforts are unsuccessful or advertisers or publishers decide not to maintain or increase their usage of our platform for any other reason, or if we fail to attract new advertisers or publishers, our revenue could fail to grow or may decline, which would materially and adversely harm our business, operating results and financial condition.

Our business depends on our ability to maintain and expand access to advertising spend, including spend from a limited number of DSPs, agencies and advertisers.

Our business depends on our ability to maintain and expand our access to advertising spend from advertisers through DSPs, as well as agencies and direct advertisers (that execute their purchases through DSPs), to purchase impressions from our publishers. A limited number of large advertising customers account for a significant portion of our revenue, and in particular one DSP customer, which accounted for approximately 10% of our revenue for the year ended December 31, 2020. Our agreements with most DSPs automatically renew each year for successive one-year terms. However either party may generally terminate for convenience upon providing 30 day prior written notice. We expect to depend upon these few DSPs for a large percentage of impressions purchased for the foreseeable future. Any disruptions in our relationships with DSPs, agencies or advertisers could harm our business, results of operations and financial condition. To support our continued growth, we will seek to expand upon current levels of utilization with these DSPs, agencies and advertisers.

In general, we have no minimum commitments from advertisers, agencies or DSPs to spend on our platform, so the amount of demand available to us can change at any time, and we cannot assure you that we will have access to a consistent volume or quality of advertising spend or demand. If an advertiser or DSP representing a significant portion of the demand in our platform decides to materially reduce use of our services, it could cause an immediate and significant decline in our revenue and profitability and adversely affect our business, results of operations and financial condition.

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Our business depends on our ability to maintain and expand access to valuable inventory from publishers, including our largest publishers.

Our business depends on our access to valuable advertising inventory. We depend upon publishers, including channel partners, which aggregate large numbers of smaller publishers, to provide advertising inventory which we can offer to prospective advertisers. A relatively small number of publishers have historically accounted for a significant portion of the advertising inventory sold on our platform, as well as a significant portion of our revenue, including a relatively small number of channel partners. To support our continued growth, we will seek to add additional publishers to our platform and to expand current utilization with our existing publishers.

In general, our relationships with publishers do not contain minimum commitments, so the amount, quality and cost of inventory available on our platform can change at any time, and we cannot assure you that we will have access to a consistent volume or quality of inventory at a reasonable cost, or at all. Any disruptions in our relationships with publishers or our largest channel partners could adversely affect our business, results of operations and financial condition. If we cannot retain or add individual publishers with valuable inventory, or if such publishers decide not to make their valuable inventory available on our platform, then our advertisers may be less inclined to use our platform, which could adversely affect our business, results of operations and financial condition.

If we fail to make the right investment decisions in our platform, or if we fail to innovate and develop new solutions that are adopted by advertisers and publishers, we may not attract and retain advertisers and publishers, which could have an adverse effect on our business, results of operations and financial condition.

We face intense competition in the marketplace and are confronted by rapidly changing technology, evolving industry standards, consumer preferences, regulatory changes and the frequent introduction of new solutions by our competitors to which we must adapt and address. We need to continuously update our platform and the technology in which we invest and develop, including our machine learning and other proprietary algorithms, in order to attract publishers and advertisers and stay ahead of changes in technology, evolving industry standards and regulatory requirements. Our platform is complex and new solutions can require a significant investment of time and resources to develop, test, introduce and enhance. These activities can take longer than we expect and we may not make the right decisions regarding our pursuit of these investments. New formats and channels, such as mobile header bidding and CTV, present unique challenges and our success in new formats and channels depends upon our ability to integrate them with our platform. If our mobile and video solutions or our CTV solutions are not widely adopted by advertisers and publishers, we may not retain advertisers and publishers. In addition, new demands from advertisers or publishers, superior offerings by competitors, changes in technology, or new industry standards or regulatory requirements could render our platform or our existing solutions less effective and require us to make unanticipated changes to our platform or business model. Furthermore, our focus on our end-to-end platform may decrease our responsiveness and agility to respond to changes or innovations specific to either our DSP or SSP solutions. Our failure to adapt to a rapidly changing market, anticipate changing demand, or attract and retain advertisers or publishers would cause our revenue or revenue growth rate to decline and adversely affect our business, results of operations and financial condition.

Significant parts of our business depend on relationships with data providers for data sets used to deliver targeted campaigns.

Our ability to deliver targeted advertising campaigns depends on our ability to acquire effective data sets, which we do through a combination of proprietary data sets as well as data sets that we purchase from third parties. If any third-party data providers decide not to make data sets available to us, decide to increase their price or place significant restrictions on the use of their data, we may not be able to replace this with our own proprietary data sets or those of other third-party providers that satisfy our requirements in a timely and cost-

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effective manner. In addition, some data set providers in the industry may enter into exclusivity arrangements with our competitors, which could limit our access to a meaningful supply of data and give them a competitive advantage. Any limitations on access to these third-party data sets could impair our ability to deliver effective solutions, which could adversely affect our business, results of operations and financial condition.

Our business depends on our ability to collect, use and disclose certain data, including CTV data, to deliver advertisements. Any limitation imposed on our collection, use or disclosure of this data could significantly diminish the value of our platform and cause us to lose publishers, advertisers and revenue. Consumer tools, regulatory restrictions and technological limitations all threaten our ability to use and disclose data.

As we process transactions through our platform, we collect large amounts of data about advertisements and where they are placed, such as consumer, advertiser and publisher preferences for media and advertising content. We also collect data on ad specifications such as ad placement, size and format, ad pricing and auction activity such as price floors, bid response behavior and clearing prices. Further, we collect certain data from consumers that, while not identifying the individual, does include browser, device location and characteristics, online browsing behavior, exposure to and interaction with advertisements, and inferential data about purchase intentions and preferences. We collect this data through various means, including from our own systems, pixels that publishers allow us to place on their websites to track consumer visits, software development kits installed in mobile applications, cookies and other tracking technologies. Our publishers, advertisers and data providers may also choose to provide us with their proprietary data about consumers.

We aggregate this data and analyze it in order to enhance our services, including the pricing, placement and delivery of advertisements. As part of our real-time analytics service offering we also share the data, or analyses based on such data, with our publishers and advertisers. Our ability to collect, use and share data about advertising transactions and consumer behavior is critical to the value of our services. There are many technical challenges relating to our ability to collect, aggregate, use and store the data, and we cannot assure you that we will be able to do so effectively. Evolving regulatory standards could place restrictions on the collection, aggregation, use and storage of information, which could result in a material increase in the cost of collecting or otherwise obtaining certain kinds of data and could limit the ways in which we may use or disclose information. Consumers can, with increasing ease, implement practices or technologies that may limit our ability to collect and use data to deliver advertisements, or otherwise inhibit the effectiveness of our platform, including opt out capabilities offered by various mobile, CTV manufacturer and web browsers, as well as data deletion request mechanisms offered by us to consumers, following IDEA and GDPR protocols. Although our publishers and advertisers generally permit us to aggregate and use data from advertising placements, subject to certain restrictions, existing or future publishers or advertisers might decide to restrict our collection or use of their data. Any limitations could impair our ability to deliver effective solutions, which could adversely affect our business, results of operations and financial condition.

If the use of third-party “cookies,” mobile device IDs, CTV data collection or other tracking technologies is restricted without similar or better alternatives (and adoption of such alternatives), our platform’s effectiveness could be diminished and our business, results of operations and financial condition could be adversely affected.

We use “cookies,” or small text files placed on consumer devices when an Internet browser is used, as well as mobile device identifiers and CTV data collection devices, to gather data that enables our platform to be more effective. Our cookies, mobile device IDs and CTV data collection devices do not identify consumers directly but rather record information, such as when a consumer views or clicks on an advertisement, when a consumer uses a mobile app, the consumer’s location and browser or other device information. Publishers and partners may also choose to share their information about consumers’ interests or give us permission to use their cookies and mobile device IDs. We use data from cookies, mobile device IDs, CTV data collection devices and other tracking technologies to help advertisers decide whether to bid on, and how to price, an ad impression in a certain location, at a given time, for a particular consumer. Without cookies, mobile device IDs, CTV data collection

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devices and other tracking technology data, transactions processed through our platform would be executed with less insight into consumer activity, reducing the precision of advertisers’ decisions about which impressions to purchase for an advertising campaign and limiting our reporting capabilities. This could make placement of advertising through our platform less valuable and harm our revenue. If our ability to use cookies, mobile device IDs, CTV data collection devices or other tracking technologies is limited, we may be required to develop or obtain additional applications and technologies to compensate for the lack of cookies, mobile device IDs, CTV data collection devices and other tracking technology data, which could be time consuming or costly to develop, less effective and subject to additional regulation.

Our failure to meet content and inventory standards and provide services that our advertisers and publishers trust could harm our brand and reputation and negatively impact our business, operating results and financial condition.

We do not provide or control the content of advertisements or that of the digital media providing inventory. Advertisers provide the advertising content and publishers provide the inventory content. Both advertisers and publishers are concerned about being associated with content they consider inappropriate, competitive or inconsistent with their brands, or illegal, and they are hesitant to spend money or make inventory available without guaranteed brand and content security. Consequently, our reputation depends, in part, on providing services that our advertisers and publishers trust and we have contractual obligations to meet certain content and inventory standards. We use commercially reasonable efforts to contractually prohibit the misuse of our platform by agencies (and their marketer customers) and publishers; however we are not always successful in achieving a fulsome level of protection. Despite such efforts, advertisers may inadvertently purchase inventory that proves to be unacceptable for their campaigns, in which case we may not be able to collect revenue or recoup the amounts paid to publishers. Furthermore, the standards by which an advertiser or a publisher may consider an advertising placement or inventory content offensive or inappropriate are constantly changing and our contractual agreements are not always able to anticipate fully the preferences of our advertisers and publishers. Our advertisers could intentionally run campaigns that do not meet the standards of our publishers or attempt to use illegal or unethical targeting practices or seek to display advertising in jurisdictions that do not permit such advertising or in which the regulatory environment is uncertain, in which case our supply of ad inventory from such suppliers could be jeopardized.

We must grow rapidly to remain a market leader and to accomplish our strategic objectives. If we fail to grow, or fail to manage our growth effectively, the value of our company may decline.

The advertising technology market is dynamic, and our success depends upon the continued adoption of programmatic advertising and our ability to develop innovative new technologies and solutions for the evolving needs of advertisers and digital media property owners. We need to grow significantly to develop the market reach and scale necessary to compete effectively with large competitors. This growth depends to a significant degree upon the quality of our strategic vision and planning. The advertising market is evolving rapidly, and if we make strategic errors, there is a significant risk that we will lose our competitive position and be unable to recover and achieve our objectives. Our ability to grow requires access to, and prudent deployment of, capital for hiring, expansion of physical infrastructure to run our platform, acquisition of companies or technologies, and development and integration of supporting sales, marketing, finance, administrative and managerial infrastructure. Further, the growth we are pursuing may strain our resources. If we are not able to innovate and grow successfully, the value of our business may be adversely affected.

The market for programmatic buying for advertising campaigns is relatively new and evolving. If this market develops slower or differently than we expect, our business, operating results and financial condition could be adversely affected.

We derive revenue from the programmatic advertising on our end-to-end platform. We expect that programmatic advertising will continue to be our primary source of revenue for the foreseeable future and that

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our revenue growth will largely depend on increasing our customers’ usage of our platform. While the market for programmatic advertising for desktop and mobile is relatively established, the market in other channels is still emerging, and our current and potential customers may not shift quickly enough to programmatic advertising from other buying methods, which would reduce our growth potential. If the market for programmatic advertising deteriorates or develops more slowly than we expect, it could reduce demand for our platform and our business, growth prospects and financial condition could be adversely affected.

If we fail to detect or prevent fraud on our platform, or malware intrusion into the systems or devices of our publishers and their consumers, publishers could lose confidence in our platform and we could face legal claims that could adversely affect our business, results of operations and financial condition.

We may be subject to fraudulent or malicious activities undertaken by persons seeking to use our platform for improper purposes. For example, someone may attempt to divert or artificially inflate advertiser purchases through our platform, or to disrupt or divert the operation of the systems and devices of our publishers, and their consumers in order to misappropriate information, generate fraudulent billings or stage cyberattacks, or for other illicit purposes. We use our proprietary technology and third-party services to, and we participate in industry co-ops that work to, detect malware and other content issues as well as click fraud (whether by humans or software known as “bots”) and to block fraudulent inventory. Preventing and combating fraud is an industry-wide issue that requires constant vigilance, as well as a balancing of cost effectiveness and risk, and we cannot guarantee that we will be successful in our efforts to combat fraud. We may provide access to inventory that is objectionable to our advertisers or we may serve advertising that contains malware or objectionable content to our publishers, which could harm our and our advertisers’ and publishers’ reputation, causing them to scale-back or terminate their relationship with us, or otherwise negatively impact our business, operating results and financial condition.

If the use of digital advertising is rejected by consumers, through opt-in, opt-out or ad-blocking technologies or other means, it could have an adverse effect on our business, results of operations and financial condition.

Consumers can, with increasing ease, implement technologies that limit our ability to collect and use data to deliver advertisements, or otherwise limit the effectiveness of our platform. Cookies may be deleted or blocked by consumers. The most commonly used Internet browsers allow consumers to modify their browser settings to block first-party cookies (placed directly by the publisher or website owner that the consumer intends to interact with) or third-party cookies (placed by parties, like us, that have no direct relationship with the consumer), and some browsers block third-party cookies by default. For example, Apple recently moved to “opt-in” privacy models, requiring consumers to voluntarily choose to receive targeted ads, which may reduce the value of inventory on its iOS mobile application platform. Many applications and other devices allow consumers to avoid receiving advertisements by paying for subscriptions or other downloads. Mobile devices using Android and iOS operating systems limit the ability of cookies to track consumers while they are using applications other than their web browser on the device. As a consequence, fewer of our cookies or publishers’ cookies may be set in browsers or be accessible in mobile devices, which could adversely affect our business.

Some consumers also download free or paid “ad blocking” software on their computers or mobile devices, not only for privacy reasons but also to counteract the adverse effect advertisements can have on the consumer experience, including increased load times, data consumption and screen overcrowding. If more consumers adopt these measures, our business, results of operations and financial condition could be adversely affected. Ad-blocking technologies could have an adverse effect on our business, results of operations and financial condition if they reduce the volume or effectiveness and value of advertising. In addition, some ad blocking technologies only block ads that are targeted through use of third-party data, while allowing ads based on first-party data (i.e., data owned by the publisher). These ad blockers could place us at a disadvantage because we rely heavily on third-party data, while some large competitors have troves of first-party data they use to direct advertising. Other technologies allow ads that are deemed “acceptable,” which could be defined in ways that place us or our publishers at a disadvantage, particularly if such technologies are controlled or influenced by our

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competitors. Even if ad blockers do not ultimately have an adverse effect on our business, investor concerns about ad blockers could cause our stock price to decline.

We must scale our platform infrastructure to support anticipated growth and transaction volume. If we fail to do so, we may limit our ability to process inventory and we may lose revenue.

Our business depends on processing inventory in milliseconds, and we must handle an increasingly large volume of such transactions. The addition of new solutions, such as header bidding in mobile and CTV formats, support of evolving advertising formats, handling and use of increasing amounts of data, and overall growth in impressions place growing demands upon our platform infrastructure. If we are unable to grow our platform to support substantial increases in the number of transactions and in the amount of data we process, on a high-performance, cost-effective basis, our business, results of operations and financial condition could be adversely affected.

Disruptions to service from our third-party data center hosting facilities and cloud computing and hosting providers could impair the delivery of our services and harm our business.

A significant portion of our business relies upon hardware and services that are hosted, managed and controlled by third-party co-location providers for our data centers, and we are dependent on these third-parties to provide continuous power, cooling, Internet connectivity and physical and technological security for our servers. In the event that these third-party providers experience any interruption in operations or cease business for any reason, or if we are unable to agree on satisfactory terms for continued hosting relationships, we would be forced to enter into a relationship with other service providers or assume some hosting responsibilities ourselves. Even a disruption as brief as a few minutes could have a negative impact on marketplace activities and could result in a loss of revenue. These facilities may be located in areas prone to natural disasters and may experience catastrophic events such as earthquakes, fires, floods, power loss, telecommunications failures, public health crises and similar events. They may also be subject to break-ins, sabotage, intentional acts of vandalism, cyber-attacks and similar misconduct. Although we have made certain disaster recovery and business continuity arrangements, such events could cause damage to, or failure of, our systems generally, or those of the third-party cloud computing and hosting providers, which could result in disruptions to our service.

We face potential liability and harm to our business based on the human factor of inputting information into our platform.

We or our customers set up campaigns on our platform using a number of available variables. While our platform includes several checks and balances, it is possible for human error to result in significant over-spending. We offer a number of protections such as daily or overall spending caps, but despite these protections, the ability for overspend exists. For example, campaigns which last for a period of time can be set to pace evenly or as quickly as possible. If a customer with a high credit limit enters an incorrect daily cap with a campaign set to a rapid pace, it is possible for a campaign to accidently go significantly over budget. While our customer contracts state that customers are responsible for media purchased through our platform, we are ultimately responsible for paying the inventory providers and we may be unable to collect when such issues occur.

Any failure to protect our intellectual property rights could negatively impact our business.

We regard the protection of our intellectual property, which includes trade secrets, copyrights, trademarks and domain names, as critical to our success. We strive to protect our intellectual property rights by relying on federal, state and common law rights, as well as contractual restrictions. We generally enter into confidentiality and invention assignment agreements with our employees and contractors and confidentiality agreements with parties with whom we conduct business in order to limit access to, and disclosure and use of, our proprietary information. However, we may not be successful in executing these agreements with every party who has access to our confidential information or contributes to the development of our intellectual property. Those agreements

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that we do execute may be breached, and we may not have adequate remedies for any such breach. These contractual arrangements and the other steps we have taken to protect our intellectual property may not prevent the misappropriation of our intellectual property, or deter independent development of similar intellectual property by others. Breaches of the security of our solutions, databases or other resources could expose us to a risk of loss or unauthorized disclosure of information collected, stored or transmitted for or on behalf of advertisers or publishers, or of cookies, data stored in cookies, other user information or other proprietary or confidential information.

We register certain domain names, trademarks and service marks in the United States and in certain locations outside the United States. We also rely upon common law protection for certain marks, such as “Tremor Video.” Any of our patents, trademarks or other intellectual property rights may be challenged by others or invalidated through administrative process or litigation. Our competitors and others could attempt to capitalize on our brand recognition by using domain names or business names similar to ours. Domain names and trademarks similar to ours have been registered in the United States and elsewhere. We may be unable to prevent third parties from acquiring or using domain names and other trademarks that infringe on, are similar to, or otherwise decrease the value of our brands, trademarks or service marks. Effective trade secret, copyright, trademark, domain name and patent protection are expensive to develop and maintain, both in terms of initial and ongoing registration requirements and the costs of defending our rights. We may be required to protect our intellectual property in an increasing number of jurisdictions, a process that is expensive and may not be successful or which we may not pursue in every location. We may, over time, increase our investment in protecting our intellectual property through additional filings that could be expensive and time-consuming.

Risks Relating to the Market in Which We Operate

If the non-proprietary technology, software, products and services that we use are unavailable, have future terms we cannot agree to or do not perform as we expect, our business, operating results and financial condition could be harmed.

We depend on data sets and various technology, software, products and services from third parties or available as open source, including for critical features and functionality of our platform to deliver targeted advertising campaigns. Our ability to obtain necessary data licenses on commercially reasonable terms is critical to the success of our platform and we could suffer material adverse consequences if we are unable to obtain data through our integrations with data suppliers or if the cost of obtaining such data materially increases. Identifying, negotiating, complying with and integrating with third-party terms and technology are complex, costly and time-consuming matters. Further, in the course of negotiations with third-party providers, we may be required to provide material upfront minimum purchase commitments in order to secure favorable contractual terms. Failure by third-party providers to acquire relevant data sets, or to maintain, support or secure their technology either generally or for our accounts specifically, or downtime, errors or defects in their products or services, could materially and adversely impact our platform, our administrative obligations or other areas of our business. Furthermore, changes in the costs of third-party services may result in us having to replace any third-party providers or their data sets, technology, products or services and could result in outages or difficulties in our ability to provide our services.

Our revenue and results of operations are highly dependent on the overall demand for advertising. Factors that affect the amount of advertising spending, such as economic downturns and the COVID-19 pandemic, can make it difficult to predict our revenue and could adversely affect our business, results of operations and financial condition.

Our business depends on the overall demand for advertising and on the economic health of our current and prospective advertisers. Recently, the economic health of advertisers has been impacted by the COVID-19 pandemic and the resulting economic uncertainty in the United States and global economy beginning in the second quarter of 2020, and as a result advertising demand on our platform decreased in the first half of 2020,

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with recovery in the second half of 2020, although some verticals have still not recovered. Many marketing budgets, particularly those in travel, retail and hospitality, decreased or paused their advertising spending as a response to the economic uncertainty, decline in business activity and other COVID-19 related impacts which have, and may continue to have, a negative impact on our revenue and results of operations. Various macroeconomic factors could cause advertisers to reduce their advertising budgets, and may include the following:

Reductions in overall advertising spending as a result of these factors could make it difficult to predict our revenue and could adversely affect our business, results of operations, and financial condition.

The extent to which the ongoing COVID-19 pandemic, including the resulting global economic uncertainty, and measures taken in response to the pandemic, could adversely affect our business, results of operations and financial condition will depend on future developments, which are highly uncertain and difficult to predict.

Our business and operations have been and could in the future be adversely affected by health epidemics, such as the global COVID-19 pandemic. The COVID-19 pandemic and efforts to control its spread have curtailed the movement of people, goods and services worldwide, including in the regions in which we and our customers operate, and are significantly impacting economic activity and financial markets. Many marketers, particularly those in the travel, retail and hospitality industries, have decreased or paused their advertising spending as a response to the economic uncertainty, decline in business activity, and other COVID-19-related impacts, which has negatively impacted, and may continue to negatively impact, our revenue and results of operations, the extent and duration of which we may not be able to accurately predict. The spread of an infectious disease may also result in, and, in the case of the COVID-19 pandemic has resulted in, regional quarantines, labor shortages or stoppages, changes in consumer purchasing patterns, disruptions to service providers’ ability to deliver data on a timely basis, or at all, and overall economic instability.

A recession, depression or other sustained adverse market events resulting from the spread of COVID-19 could materially and adversely affect our business and that of our customers or potential customers. Our customers’ and potential customers’ businesses or cash flows have been and may continue to be negatively impacted by the COVID-19 pandemic, which has led and may continue to lead them to reduce their advertising spending and delay their advertising initiatives or technology spending, or attempt to renegotiate contracts and obtain concessions, which may materially and negatively impact our business, operating results and financial condition. Advertisers may also seek adjustments to their payment terms, delay making payments or default on their payables, any of which may impact the timely receipt and/or collectability of our receivables. Typically, we are contractually required to pay advertising inventory and data suppliers within a negotiated period of time, regardless of whether our customers pay us on time, or at all, and we may not be able to renegotiate better terms. As a result, our financial condition and results of operations may be adversely impacted if the business or financial condition of advertisers and marketers is negatively affected by the pandemic.

Our operations are subject to a range of external factors related to the COVID-19 pandemic that are not within our control. We have taken precautionary measures intended to minimize the risk of the spread of the

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virus to our employees and the communities in which we operate. A wide range of governmental restrictions has also been imposed on our employees’ physical movement to limit the spread of COVID-19. There can be no assurance that precautionary measures, whether adopted by us or imposed by others, will be effective, and such measures could negatively affect our sales, marketing, and customer service efforts, delay and lengthen our sales cycles, decrease our employees’ productivity, or create operational or other challenges, any of which could harm our business, operating results and financial condition.

The economic uncertainty caused by the COVID-19 pandemic has made and may continue to make it difficult for us to forecast revenue and operating results and to make decisions regarding operational cost structures and investments. Our business depends on the overall demand for advertising and on the economic health of advertisers and publishers that benefit from our platform. Economic downturns or unstable market conditions may cause advertisers to decrease their advertising budgets, which could reduce usage of our platform and adversely affect our business, operating results and financial condition. We have committed, and we plan to continue to commit, resources to grow our business, including to expand our employee base and develop our platform, and such investments may not yield anticipated returns, particularly if global business activity continues to be impacted by the COVID-19 pandemic. The duration and extent of the impact from the COVID-19 pandemic depend on future developments that cannot be accurately predicted at this time, and if we are not able to respond to and manage the impact of such events effectively, our business may be harmed. Such future developments may include, among others, the duration and spread of the outbreak, new information that may emerge concerning the severity of COVID-19 and government actions to contain COVID-19 or treat its impact, the level of relief efforts designed to help businesses and consumers, including any declines in such levels, the impact on advertisers and our sales cycles, the impact on advertiser, industry or employee events and the effect on publishers.

Our results may also fluctuate unpredictably as and to the extent there is a recovery from the pandemic and a return to non-pandemic business conditions. We cannot predict the impact of a post-pandemic recovery on the economy, advertisers or consumer media consumption patterns or the degree to which certain trends, such as the growth in demand for CTV, will continue.

Any decrease in the use of the advertising or publishing channels that we primarily depend on, or failure to expand into emerging channels, could adversely affect our business, results of operations and financial condition.

The future growth of our business could be constrained by the level of acceptance and expansion of emerging channels, as well as the continued use and growth of existing channels in which our capabilities are more established. Our revenue growth may depend on our ability to expand within mobile and, in particular, CTV, and we have been, and are continuing to, enhance such channels. We may not be able to accurately predict changes in overall advertiser demand for the channels in which we operate and cannot assure you that our investment in formats will correspond to any such trends. For example, we cannot predict whether the growth in demand for our CTV offering will continue. Any decrease in the use of existing channels, whether due to advertisers or publishers losing confidence in the value or effectiveness of such channels, regulatory restrictions or other causes, or any inability to further penetrate CTV or enter new and emerging advertising channels, could adversely affect our business, results of operations, and financial condition.

If CTV develops in ways that prevent advertisements from being delivered to consumers, our business, results of operations and financial condition may be adversely affected.

As online video advertising has continued to scale and evolve, the amount of online video advertising being bought and sold programmatically has increased dramatically; this market continues to grow with the increased popularity of CTV media. However, despite the opportunities created by programmatic advertising, programmatic solutions for CTV publishers are still nascent compared to desktop search and mobile video solutions. Many CTV publishers have backgrounds in cable or broadcast television and have limited experience

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with digital advertising, and in particular programmatic advertising. For these publishers, it is extremely important to protect the quality of the viewer experience to maintain brand goodwill and ensure that online advertising efforts do not create sales channel conflicts or otherwise detract from their direct sales force. In this regard, programmatic advertising presents a number of potential challenges, including the ability to ensure that ads are brand safe, comply with business rules around competitive separation, are not overly repetitive, are played at the appropriate volume and do not cause delays in load-time of content. We believe that our platform is well-positioned to allow publishers the opportunity to achieve these goals and also reliably achieve “ad potting,” or the placement of the desired number of advertisements in commercial breaks. In fact, we have invested significant time and resources cultivating relationships with CTV publishers to establish best practices and teach them about the benefits of programmatic CTV. While we believe that programmatic advertising will continue to grow as a percentage of overall CTV advertising, there can be no assurance as to the rate at which CTV publishers will adopt programmatic solutions such as ours, if at all, which could adversely affect our business, results of operations and financial condition.

The market in which we participate is intensely competitive, and we may not be able to compete successfully with our current or future competitors.

We operate in a highly competitive and rapidly changing industry. We expect competition to persist and intensify in the future, which could harm our ability to increase revenue and our market share and maintain profitability. New technologies and methods of buying advertising present a dynamic competitive challenge, as market participants develop and offer new products and services, such as analytics, automated media buying and exchanges, aimed at capturing advertising spend or disrupting the digital marketing landscape. Further, our competitors may begin offering similar products or services to those we currently offer, including our end-to-end platform, and our ability to compete effectively could be significantly compromised.

We may also face competition from new companies entering the market, including large established companies and companies that we do not yet know about or do not yet exist. If existing or new companies develop, market or resell competitive high-value products or services that result in additional competition for advertising spend or advertising inventory or if they acquire one of our existing competitors or form a strategic alliance with one of our competitors, our ability to compete effectively could be significantly compromised and our results of operations could be harmed.

Our current and potential competitors may have significantly more financial, technical, marketing and other resources than we have, which may allow them to devote greater resources to the development, promotion, sale and support of their products and services. They may also have more extensive advertiser bases and broader publisher relationships than we have and may be better positioned to execute on advertising conducted over certain channels, such as social media, mobile and video. Some of our competitors may have a longer operating history and greater name recognition. As a result, these competitors may be better able to respond quickly to new technologies, develop deeper advertiser relationships or offer services at lower prices. Any of these developments would make it more difficult for us to sell our platform and could result in increased pricing pressure, increased sales and marketing expense, or the loss of market share.

Seasonal fluctuations in advertising activity could have a material impact on our revenue, cash flow and operating results.

Our revenue, cash flow, operating results and other key operating and performance metrics may vary from quarter to quarter due to the seasonal nature of our customers’ spending on advertising campaigns. For example, in prior years, customers tended to devote more of their advertising budgets to the fourth calendar quarter to coincide with consumer holiday spending. In contrast, the first quarter of the calendar year has typically been the slowest in terms of advertising spend. These patterns may or may not hold true during the COVID-19 pandemic. Political advertising could also cause our revenue to increase during election cycles and decrease during other periods, making it difficult to predict our revenue, cash flow and operating results, all of which could fall below our expectations.

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If we do not effectively grow and train our sales and support teams, we may be unable to add new customers or increase usage of our platform by our existing customers and our business will be adversely affected.

We are substantially dependent on our sales and support teams to obtain new customers and to increase usage of our platform by our existing customers. We believe that there is significant competition for sales personnel with the skills and technical knowledge that we require. Our ability to achieve revenue growth will depend, in large part, on our success in recruiting, training, integrating and retaining sufficient numbers of sales personnel to support our growth. Due to the complexity of our platform, a significant time lag exists between the hiring date of sales and support personnel and the time when they become fully productive. Our recent and planned hires may not become productive as quickly as we expect, and we may be unable to hire or retain sufficient numbers of qualified individuals in the markets where we do business or plan to do business. If we are unable to hire and train sufficient numbers of effective sales personnel, or the sales personnel are not successful in obtaining new customers or increasing our existing customers’ spend with us, our business may be adversely affected.

The United Kingdom’s withdrawal from the European Union may have a negative effect on global economic conditions, financial markets and our business.

Following a national referendum and enactment of legislation by the government of the United Kingdom, the United Kingdom formally withdrew from the European Union on January 31, 2020 and ratified a trade and cooperation agreement governing its future relationship with the European Union. The agreement, which is being applied provisionally from January 1, 2021 until it is ratified by the European Parliament and the Council of the European Union, addresses trade, economic arrangements, law enforcement, judicial cooperation and a governance framework including procedures for dispute resolution, among other things. Because the agreement merely sets forth a framework in many respects and will require complex additional bilateral negotiations between the United Kingdom and the European Union as both parties continue to work on the rules for implementation, significant political and economic uncertainty remains about how the precise terms of the relationship between the parties will differ from the terms before withdrawal.

These developments, or the perception that any related developments could occur, have had and may continue to have a material adverse effect on global economic conditions and the stability of global financial markets, and may significantly reduce global market liquidity, restrict the ability of key market participants to operate in certain financial markets or restrict our access to capital. Any of these factors could have a material adverse effect on our business, financial condition and results of operations and reduce the price of our ADSs.

Risks Relating to Our Employees and Location in Israel

Our long-term success depends on our ability to operate internationally making us susceptible to risks associated with cross-border sales and operations.

We serve advertisements in more than 100 countries and maintain offices in North America, Europe, Asia and Australia. Our expansive global footprint subjects us to a variety of risks and burdens, including:

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These factors may require significant management attention and financial resources. Any negative impact from our international business efforts could adversely affect our business, results of operations and financial condition.

We depend on our executive officers and other key employees, and the loss of one or more of these employees could harm our business.

Our success depends largely upon the continued services of our executive officers and other key employees. From time to time, there may be changes in our executive management team resulting from the hiring or departure of executives, which could disrupt our business. We do not have employment agreements with our executive officers or other key personnel that require them to continue to work for us for any specified period and, therefore, they could terminate their employment with us at any time subject only to the notice periods prescribed by their respective executive agreements. The loss of one or more of our executive officers or key employees could harm our business.

Inability to attract and retain other highly skilled employees could harm our business.

To execute our growth plan, we must attract and retain highly qualified personnel. Competition where we maintain offices is intense, especially for engineers experienced in designing and developing software and experienced sales professionals. We have from time to time experienced, and we expect to continue to experience, difficulty in hiring and retaining employees with appropriate qualifications. Many of the companies with which we compete for experienced personnel have greater resources than we have and may attempt to recruit our highly skilled employees. In addition, certain domestic immigration laws restrict or limit our ability to recruit internationally. Any changes to Israeli, United Kingdom, European or the U.S. immigration policies that restrain the flow of technical and professional talent may inhibit our ability to recruit and retain highly qualified employees.

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In addition, job candidates and existing employees often consider the value of the equity awards they receive in connection with their employment. If the perceived value of our equity awards declines, it may harm our ability to recruit and retain highly skilled employees.

Volatility or lack of appreciation in the price of our ADSs may also affect our ability to attract and retain our key employees. Many of our senior personnel and other key employees have become, or will soon become, vested in a substantial amount of options. Employees may be more likely to leave us if the shares they own or the shares underlying their vested options or restricted share units have significantly appreciated in value relative to the original purchase price of the shares or the exercise price of the options, or conversely, if the exercise price of the options that they hold are significantly above the market price of our ADSs.

Conditions in Israel could materially and adversely affect our business.

Many of our employees, including certain management members, operate from our offices that are located in Tel Aviv, Israel. In addition, a number of our officers and directors are residents of Israel. Accordingly, political, economic and military conditions in Israel and the surrounding region may directly affect our business and operations. In recent years, Israel has been engaged in sporadic armed conflicts with certain terrorist organizations and with Iranian-backed military forces in Syria. Some of these hostilities were accompanied by missiles being fired from the Gaza Strip against civilian targets in various parts of Israel, including areas in which our employees and some of our consultants are located, and negatively affected business conditions in Israel. In addition, Iran has threatened to attack Israel and may be developing nuclear weapons. Any hostilities involving Israel or the interruption or curtailment of trade between Israel and its trading partners could adversely affect our operations and results of operations.

Our commercial insurance does not cover losses that may occur as a result of events associated with war and terrorism. Although the Israeli government currently covers the reinstatement value of direct damages that are caused by terrorist attacks or acts of war, we cannot assure you that this government coverage will be maintained or that it will sufficiently cover our potential damages. Any losses or damages incurred by us could have a material adverse effect on our business. Any armed conflicts or political instability in the region could negatively affect our business conditions and harm our results of operations.

Further, in the past, the State of Israel and Israeli companies have been subjected to economic boycotts. Several countries still restrict business with the State of Israel and with Israeli companies. These restrictive laws and policies may have an adverse impact on our operating results, financial condition or the expansion of our business. A campaign of boycotts, divestment and sanctions has been undertaken against Israel, which could also adversely impact our business.

In addition, many Israeli citizens are obligated to perform several days, and in some cases more, of annual military reserve duty each year until they reach the age of 40 (or older, for reservists who are military officers or who have certain occupations) and, in the event of a military conflict, may be called to active duty. In response to increases in terrorist activity, there have been periods of significant call-ups of military reservists. It is possible that there will be military reserve duty call-ups in the future. Our operations could be disrupted by such call-ups, which may include the call-up of members of our management. Such disruption could materially adversely affect our business, prospects, financial condition and results of operations.

Your rights and responsibilities as our shareholder will be governed by Israeli law, which may differ in some respects from the rights and responsibilities of shareholders of U.S. corporations.

We are incorporated under Israeli law. The rights and responsibilities of holders of our ordinary shares are governed by our amended and restated articles of association to be effective upon the closing of this offering and the Companies Law. These rights and responsibilities differ in some respects from the rights and responsibilities of shareholders in typical U.S. corporations. In particular, pursuant to the Companies Law each shareholder of an

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Israeli company has to act in good faith and in a customary manner in exercising his, her or its rights and fulfilling his, her or its obligations toward the Company and other shareholders and to refrain from abusing his, her or its power in the Company, including, among other things, in voting at the general meeting of shareholders, on amendments to a company’s articles of association, increases in a company’s authorized share capital, mergers and certain transactions requiring shareholders’ approval under the Companies Law. In addition, a controlling shareholder of an Israeli company or a shareholder who knows that it possesses the power to determine the outcome of a shareholder vote or who has the power to appoint or prevent the appointment of a director or officer in the Company, or has other powers toward the Company has a duty of fairness toward the Company. However, Israeli law does not define the substance of this duty of fairness. There is little case law available to assist in understanding the implications of these provisions that govern shareholder behavior.

Provisions of Israeli law and our amended and restated articles of association to be effective upon the closing of this offering may delay, prevent or make undesirable an acquisition of all or a significant portion of our ADSs or assets.

Provisions of Israeli law and our amended and restated articles of association to be effective upon the closing of this offering could have the effect of delaying or preventing a change in control and may make it more difficult for a third party to acquire us or our shareholders to elect different individuals to our board of directors, even if doing so would be considered to be beneficial by some of our shareholders, and may limit the price that investors may be willing to pay in the future for our ordinary shares. Among other things:

Further, Israeli tax considerations may make potential transactions undesirable to us or to some of our shareholders whose country of residence does not have a tax treaty with Israel granting tax relief to such shareholders from Israeli tax. For example, Israeli tax law does not recognize tax-free share exchanges to the same extent as U.S. tax law. With respect to mergers, Israeli tax law allows for tax deferral in certain circumstances but makes the deferral contingent on the fulfillment of numerous conditions, including a holding period of two years from the date of the transaction during which certain sales and dispositions of shares of the participating companies are restricted. Moreover, with respect to certain share swap transactions, the tax deferral is limited in time, and when such time expires, the tax becomes payable even if no disposition of the shares has occurred.

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Our amended and restated articles of association to be effective upon the closing of this offering provide that unless we consent to an alternate forum, the federal district courts of the United States shall be the exclusive forum for the resolution of any claims arising under the Securities Act of 1933, as amended (the “Securities Act”), which may limit the ability of our shareholders to initiate litigation against us or increase the cost thereof.

Our amended and restated articles of association to be effective upon the closing of this offering provide that unless we consent in writing to the selection of an alternative forum, the federal district courts of the United States shall be the exclusive forum for the resolution of any complaint asserting a cause of action arising under the Securities Act. Section 22 of the Securities Act creates concurrent jurisdiction for federal and state courts over all such Securities Act actions, and accordingly, both state and federal courts have jurisdiction to entertain such claims. While the federal forum provision in our amended and restated articles of association does not restrict the ability of our shareholders to bring claims under the Securities Act, we recognize that it may limit shareholders’ ability to bring a claim in the judicial forum that they find favorable and may increase certain litigation costs, which may discourage the filing of claims under the Securities Act against the Company, its directors and officers. However, the enforceability of similar forum provisions (including exclusive federal forum provisions for actions, suits or proceedings asserting a cause of action arising under the Securities Act) in other companies’ organizational documents has been challenged in legal proceedings, and there is uncertainty as to whether courts would enforce the exclusive forum provisions in our amended and restated articles of association. If a court were to find the choice of forum provision contained in our amended and restated articles of association to be inapplicable or unenforceable in an action, we may incur additional costs associated with resolving such action in other jurisdictions, which could materially adversely affect our business, financial condition and results of operations. We note that investors cannot waive compliance with the federal securities laws and the rules and regulations thereunder may have the effect of discouraging lawsuits against our directors and officers.

It may be difficult to enforce a U.S. judgment against us, our officers and directors in Israel or the United States, or to assert U.S. securities laws claims in Israel or serve process on our officers and directors.

Not all of our directors or officers are residents of the United States and most of their and our assets are located outside the United States. Service of process upon us or our non-U.S. resident directors and officers and enforcement of judgments obtained in the United States against us or our non-U.S. our directors and executive officers may be difficult to obtain within the United States. We have been informed by our legal counsel in Israel that it may be difficult to assert claims under U.S. securities laws in original actions instituted in Israel or obtain a judgment based on the civil liability provisions of U.S. federal securities laws. Israeli courts may refuse to hear a claim based on a violation of U.S. securities laws against us or our non-U.S. officers and directors because Israel may not be the most appropriate forum to bring such a claim. In addition, even if an Israeli court agrees to hear a claim, it may determine that Israeli law and not U.S. law is applicable to the claim. If U.S. law is found to be applicable, the content of applicable U.S. law must be proved as a fact, which can be a time-consuming and costly process. Certain matters of procedure will also be governed by Israeli law. There is little binding case law in Israel addressing the matters described above. Israeli courts might not enforce judgments rendered outside Israel, which may make it difficult to collect on judgments rendered against us or our non-U.S. officers and directors.

Moreover, an Israeli court will not enforce a non-Israeli judgment if it was given in a state whose laws do not provide for the enforcement of judgments of Israeli courts (subject to exceptional cases), if its enforcement is likely to prejudice the sovereignty or security of the State of Israel, if it was obtained by fraud or in the absence of due process, if it is at variance with another valid judgment that was given in the same matter between the same parties, or if a suit in the same matter between the same parties was pending before a court or tribunal in Israel at the time the foreign action was brought. For more information, see “Enforceability of Civil Liabilities.”

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Risks Relating to Our Financial Position

Our operating history makes it difficult to evaluate our business and prospects and may increase the risk associated with your investment.

Our business has evolved over time, including through transformative acquisitions such as our acquisitions of RhythmOne plc (“RhythmOne”) in 2019 and Unruly Holdings Limited and Unruly Media, Inc. (collectively, “Unruly”) in 2020, such that our operating history makes it difficult to evaluate our current business and future prospects. As a result of such acquisitions, our financial results across different periods may not be directly comparable. We expect to face challenges, risks and difficulties frequently experienced by growing companies in rapidly developing industries, including those relating to:

If we are not successful in addressing these and other issues, our business may suffer, our revenue may decline and we may not be able to achieve further growth or sustain profitability.

We often have long sales cycles, which can result in significant time and investment between initial contact with a prospect and execution of an agreement with an advertiser or publisher, making it difficult to project when, if at all, we will obtain new advertisers or publisher and when we will generate revenue from them.

Our sales cycle, from initial contact to contract execution and implementation, can take significant time. As part of our sales cycle, we may incur significant expenses before we generate any revenue from a prospective advertiser or publisher. We have no assurance that the substantial time and money spent on our sales efforts will generate significant revenue. If conditions in the marketplace, generally or with a specific prospective advertiser or publisher, change negatively, it is possible that we will be unable to recover any of these expenses. Our sales efforts involve educating advertisers and publishers about the use, technical capabilities and benefits of our platform. Some advertisers and publishers undertake an evaluation process that frequently involves not only our platform but also the offerings of our competitors. As a result, it is difficult to predict when we will obtain new advertisers or publishers and begin generating revenue from them. Even if our sales efforts result in obtaining a new advertiser or publisher, such advertiser or publisher controls when and to what extent it uses our platform and therefore the amount of revenue we generate, and it may not sufficiently justify the expenses incurred to acquire the advertiser or publisher and the related training support. As a result, we may not be able to add advertisers or publishers to our customer base, or generate revenue, as quickly as we may expect, which could harm our growth prospects.

We are subject to payment-related risks and, if our advertisers do not pay or dispute their invoices, our business, financial condition and operating results may be adversely affected.

Many of our contracts with advertising agencies provide that if the advertiser does not pay the agency, the agency is not liable to us, and we must seek payment solely from the advertiser, a type of arrangement called

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sequential liability. Contracting with these agencies, which in some cases have or may develop higher-risk credit profiles, may subject us to greater credit risk than if we were to contract directly with advertisers. This credit risk may vary depending on the nature of an advertising agency’s aggregated advertiser base. We may also be involved in disputes with agencies and their marketers over the operation of our platform, the terms of our agreements or our billings for purchases made by them through our platform. When we are unable to collect or make adjustments to our bills to advertisers, we incur write-offs for bad debt, which could have a material adverse effect on our results of operations for the periods in which the write-offs occur. In the future, bad debt may exceed reserves for such contingencies and our bad debt exposure may increase over time. Any increase in write-offs for bad debt could have a materially negative effect on our business, operating results and financial condition.

Furthermore, we are generally contractually required to pay suppliers of advertising inventory and data within a negotiated period of time, regardless of whether our advertisers or publishers pay us on time, or at all. While we attempt to negotiate long payment periods with our suppliers and shorter periods with our advertisers and publishers, we are not always successful. As a result, our accounts payable are often due on shorter cycles than our accounts receivables, requiring us to remit payments from our own funds, and accept the risk of bad debt.

This payment process will increasingly consume working capital if we continue to be successful in growing our business. In addition, like many companies in our industry, we often experience slow payment by advertising agencies. In this regard, we had average days sales outstanding (“DSO”) of 113 days and average days payable outstanding (“DPO”) of 77 days for the year ended December 31, 2020. We compute our average DSO as of a given month end based on a weighted average of outstanding accounts receivable. Specifically, the DSO is calculated by multiplying the percentage of accounts receivable outstanding for each monthly billing period by the number of days outstanding related to each billing period and then summing the weighted days outstanding. We compute our DPO as of a given month end by dividing our trade payables (including accrued liabilities) by the average daily cost of media, data, other direct costs and certain operating expenses over the prior four months. Historically, our DSOs have fluctuated. If our DSOs increase significantly, and we are unable to borrow against these receivables on commercially acceptable terms, our working capital availability could be reduced, and as a consequence our results of operations and financial condition would be adversely impacted. We cannot assure you that as we continue to grow, our business will generate sufficient cash flow from operations to fund our working capital needs. If our cash flows are insufficient to fund our working capital requirements, we may not be able to grow at the rate we currently expect or at all.

Future acquisitions or strategic investments could be difficult to identify and integrate, divert the attention of management, and could disrupt our business, dilute shareholder value and adversely affect our business, results of operations and financial condition.

As part of our growth strategy we have pursued in the past transformative acquisitions, such as our recent acquisitions of RhythmOne in 2019 and Unruly in 2020, and we may acquire or invest in other businesses, assets or technologies that are complementary to our business and align with our strategic goals. Any acquisition or investment may divert the attention of management and require us to use significant amounts of cash, issue dilutive equity securities or incur debt. In addition, the anticipated benefits of any acquisition or investment may not be realized, and we may be exposed to unknown risks, any of which could adversely affect our business, results of operations and financial condition, including risks arising from:

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To fund future acquisitions, we may pay cash or issue additional ADSs, which could dilute our shareholders’ value or diminish our cash reserves. Borrowing to fund an acquisition would result in increased fixed obligations and could also subject us to covenants or other restrictions that could limit our ability to effectively run our business.

Risks Relating to Legal or Regulatory Constraints

We are subject to regulation with respect to political advertising, which lacks clarity and uniformity.

We are subject to regulation with respect to political advertising activities, which are governed by various federal and state laws in the United States and national and provincial laws worldwide. Online political advertising laws are rapidly evolving and our publishers may impose restrictions on receiving political advertising. The lack of uniformity and increasing compliance requirements around political advertising may adversely impact the amount of political advertising spent through our platform, increase our operating and compliance costs and subject us to potential liability from regulatory agencies.

We are subject to laws and regulations related to data privacy, data protection and information security and consumer protection across different markets where we conduct our business, including in the United States, the European Economic Area (“EEA”) and the United Kingdom and industry requirements and such laws, regulations and industry requirements are constantly evolving and changing.

We receive, store and process data about or related to consumers in addition to advertisers, publishers, employees and services providers. Our handling of this data is subject to a variety of federal, state and foreign laws and regulations and is subject to regulation by various government authorities and other regulatory bodies. Our data handling is also subject to contractual obligations and may be deemed to be subject to industry standards.

The U.S. federal and various state and foreign governments have adopted or proposed limitations on the collection, distribution, use and storage of data relating to individuals, including the use of contact information and other data for marketing, advertising and other communications with individuals and businesses. In the United States, various laws and regulations apply to the collection, processing, disclosure and security of certain types of data. Additionally, the U.S. Federal Trade Commission (“FTC”) and many state attorneys general are interpreting federal and state consumer protection laws as imposing standards for the online collection, use, dissemination and security of data. If we fail to comply with any such laws or regulations, we may be subject to enforcement actions that may not only expose us to litigation, fines and civil and/or criminal penalties but may also require us to change our business practices as well as have an adverse effect on our business, results of operations and financial condition.

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The regulatory framework for and enforcement of data privacy issues worldwide is currently evolving and is likely to remain uncertain for the foreseeable future. The occurrence of unanticipated events often rapidly drives the adoption of legislation or regulation affecting the use, collection or other processing of data and manners in which we conduct our business. Restrictions could be placed upon the collection, management, aggregation and use of information, which could result in a material increase in the cost of collecting or otherwise obtaining certain kinds of data and could limit the ways in which we may use or disclose information. In particular, interest-based advertising, or the use of data to draw inferences about a user’s interests and deliver relevant advertising to that user, and similar or related practices (sometimes referred to as behavioral advertising or personalized advertising), such as cross-device data collection and aggregation, steps taken to de-identify personal data, and to use and distribute the resulting data, including for purposes of personalization and the targeting of advertisements, have come under increasing scrutiny by legislative, regulatory and self-regulatory bodies in the United States and abroad that focus on consumer protection or data privacy. Much of this scrutiny has focused on the use of cookies and other technology to collect information about consumers’ online browsing activity on web browsers, mobile devices and other devices, to associate such data with user or device identifiers or de-identified identities across devices and channels.

In addition, providers of Internet browsers, app stores or platforms such as Apple or Google have engaged in, or announced plans to continue or expand, efforts to provide increased visibility into, and certain controls over, cookies and similar technologies and the data collected using such technologies, as further described above in the section “—Risks Relating to our Business— If the use of digital advertising is rejected by consumers, through opt-in, opt-out or ad-blocking technologies or other means, it could have an adverse effect on our business, results of operations and financial condition.” For example, in January 2020, Google announced that the Chrome browser will block third-party cookies at some point during the subsequent 24 months. Such providers could also change their technical requirements, guidelines or policies in other ways that adversely impact the way in which we or our customers collect, use and share data from user devices, including restricting our ability to use or read device identifiers, other tracking features or other device data. Because we, our advertisers and our publishers, rely upon large volumes of such data collected primarily through cookies and similar technologies, it is possible that these efforts may have a substantial impact on our ability to collect and use data from consumers, and it is essential that we monitor developments in this area domestically and globally, and engage in responsible privacy practices, including providing consumers with notice of the types of data we collect, how we use that data to provide our services and the ability to opt out of such use. There also is the risk that a provider could limit or discontinue our access to its platform or app store if it establishes more favorable relationships with one or more of our competitors or it determines that it is in their business interests to do so, and we would have no recourse against any such provider, which could have a material adverse effect on our business.

In the United States, the U.S. Congress and state legislatures, along with federal regulatory authorities have recently increased their attention on matters concerning the collection and use of consumer data, including by digital advertisers. For example, the FTC regulates digital advertising through the Federal Trade Commission Act, which prohibits “unfair” or “deceptive” trade practices, including misrepresentations regarding the collection and use of consumer data. States have also begun to introduce more comprehensive privacy legislation. California enacted the California Consumer Privacy Act of 2018 (the “CCPA”) that took effect on January 1, 2020. The CCPA gives California residents expanded rights to access and delete their personal information, opt out of sale of their personal information, and receive detailed information about how their personal information is used. The CCPA provides for civil penalties for violations, as well as a private right of action for certain data breaches, which is expected to increase the volume and success of class action data breach litigation. In addition to increasing our compliance costs and potential liability, the CCPA created restrictions on “sales” of personal information that may restrict the disclosure of personal information for advertising purposes. Our advertising business relies, in part, on such disclosure, and decreased availability and increased costs of information could adversely affect our ability to meet advertisers’ and publishers’ requirements and could have an adverse effect on our business, results of operations and financial condition.

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We will also be subject to the forthcoming California Privacy Rights Act (“CPRA”), which was passed into law on November 3, 2020, but will not take substantial effect until January 1, 2023. The CPRA will significantly modify the CCPA, including increasing regulation on online advertising and particularly cross-context behavioral advertising, potentially resulting in further uncertainty and requiring us to incur additional costs and expenses in an effort to comply. The effects of the CCPA and CPRA are potentially significant and may require us to modify our data collection or processing practices and policies and to incur substantial costs and expenses in an effort to comply and increase our potential exposure to regulatory enforcement and/or litigation.

The CCPA has encouraged “copycat” laws and in other states across the country, such as in Virginia and Washington. This legislation may add additional complexity, variation in requirements, restrictions and potential legal risk, require additional investment in resources to compliance programs and could impact strategies and availability of previously useful data and could result in increased compliance costs and/or changes in business practices and policies.

In the EEA, we are subject to the General Data Protection Regulation 2016/679 (“GDPR”) and in the United Kingdom, we are subject to the United Kingdom data protection regime consisting primarily of the UK General Data Protection Regulation and the UK Data Protection Act 2018, in each case in relation to our collection, control, processing, sharing, disclosure and other use of data relating to an identifiable living individual (personal data). The GDPR, and national implementing legislation in EEA member states and the United Kingdom, impose a strict data protection compliance regime including: providing detailed disclosures about how personal data is collected and processed (in a concise, intelligible and easily accessible form); demonstrating that an appropriate legal basis is in place or otherwise exists to justify data processing activities; granting new rights for data subjects in regard to their personal data (including the right to be “forgotten” and the right to data portability), as well as enhancing current rights (e.g., data subject access requests); introducing the obligation to notify data protection regulators or supervisory authorities (and in certain cases, affected individuals) of significant data breaches; defining for the first time pseudonymized (i.e., key-coded) data; imposing limitations on retention of personal data; maintaining a record of data processing; and complying with the principal of accountability and the obligation to demonstrate compliance through policies, procedures, training and audit. Fines for certain breaches of the GDPR and the UK data protection regime are significant (e.g., fines for certain breaches of the GDPR are up to the greater of 20 million Euros or 4% of total global annual turnover). In addition to the foregoing, a breach of the GDPR or UK GDPR could result in regulatory investigations, reputational damage, orders to cease/ change our processing of our data, enforcement notices and/ or assessment notices (for a compulsory audit). We may also face civil claims including representative actions and other class action type litigation (where individuals have suffered harm), potentially amounting to significant compensation or damages liabilities, as well as associated costs, diversion of internal resources and reputational harm.

Further, in the European Union and the United Kingdom, we are subject to evolving EU and UK privacy laws on cookies and e-marketing. Regulators in these countries are increasingly focusing on compliance with requirements in the online behavioral advertising ecosystem, and current national laws that implement the ePrivacy Directive are highly likely to be replaced by an EU regulation known as the ePrivacy Regulation which will significantly increase fines for non-compliance. While the text of the ePrivacy Regulation is still under development, a recent European court decision and regulators’ recent guidance are driving increased attention to cookies and tracking technologies. As regulators start to enforce the strict approach (which has already begun to occur in Germany, where data protection authorities have initiated a probe on third-party cookies), this could lead to substantial costs, require significant systems changes, limit the effectiveness of our marketing activities, divert the attention of our technology personnel and subject us to additional liabilities.

We are also subject to laws and regulations that dictate whether, how and under what circumstances we can transfer, process and/or receive certain data that is critical to our operations, including data shared between countries or regions in which we operate and data shared among our products and services. Specifically, the GDPR, UK GDPR and other European and UK data protection laws generally prohibit the transfer of personal data from the EEA, UK and Switzerland, to the United States and most other countries unless the transfer is to an

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entity established in a country deemed to be provide adequate protection (such as Israel) or the parties to the transfer have implemented specific safeguards to protect the transferred personal data. Where we transfer personal data outside the EEA to a country that is not deemed to be “adequate,” we ensure we comply with applicable laws including where we can rely on derogations (e.g., where the transfer is necessary for the performance of a contract) or we may put in place standard contractual clauses.

In addition, some jurisdictions may impose data localization laws, which require personal information, or certain subcategories of personal information to be stored in the jurisdiction of origin. These regulations may inhibit our ability to expand into those markets or prohibit us from continuing to offer our products in those markets without significant additional costs.

We also depend on a number of third-parties in relation to the operation of our business, a number of which process personal data on our behalf. With each such provider we attempt to mitigate the associated risks of using third parties by conducting due diligence, entering into contractual arrangements to require that providers only process personal data in accordance with the applicable laws, and that they have appropriate technical and organizational security measures in place. Where we transfer personal data outside the EEA or the United Kingdom to such third parties, we do so in compliance with the relevant data export requirements, as described above. There is no assurance that these contractual measures and our own privacy and security-related safeguards will protect us from the risks associated with the third-party processing, storage and transmission of such information. Any violation of data or security laws by our third-party processors could have a material adverse effect on our business and result in the fines and penalties outlined above. In addition to government regulation, privacy advocacy and industry groups may propose new and different self-regulatory standards that either legally or contractually apply to us, our advertisers or our publishers. We are members of self-regulatory bodies such as Data Advertising Alliance, European Digital Advertising Alliance, Digital Advertising Alliance of Canada, National Advertising Initiative and Interactive Advertising Bureau (“IAB”), among others, that impose additional requirements related to the collection, use and disclosure of consumer data. Under the requirements of these self-regulatory bodies, in addition to other compliance obligations, we are obligated to provide consumers with notice about our use of cookies and other technologies to collect consumer data and of our collection and use of consumer data for certain purposes, and to provide consumers with certain choices relating to the use of consumer data. Some of these self-regulatory bodies have the ability to discipline members or participants, which could result in fines, penalties and/or public censure (which could in turn cause reputational harm). Additionally, some of these self-regulatory bodies might refer violations of their requirements to the FTC or other regulatory bodies. If we were to be found responsible for such a violation, it could adversely affect our reputation, as well as our business, results of operations and financial condition.

Any failure to achieve the required data protection standards (which are sometimes unclear when applied to the online advertising ecosystem) may result in lawsuits, regulatory fines or other actions or liability, all of which may harm our results of operations. Because the interpretation and application of privacy and data protection laws such as the CCPA and GDPR, and the related regulations and standards, are uncertain, it is possible that these laws, regulations and standards may be interpreted and applied in manners that are, or are asserted to be, inconsistent with our data management practices or the technological features of our solutions.

We face potential liability and harm to our business based on the nature of our business and the content on our platform and we are, and may be in the future, involved in commercial disputes with counterparties with whom we do business.

Advertising often results in litigation relating to misleading or deceptive claims, copyright or trademark infringement, public performance royalties or other claims based on the nature and content of advertising that is distributed through our platform. Though we contractually require advertisers to generally represent to us that their advertisements comply with our ad standards and our inventory providers’ ad standards and that they have the rights necessary to serve advertisements through our platform, we do not independently verify whether we are permitted to deliver, or review the content of, such advertisements. If any of these representations are untrue, we may be exposed to potential liability and our reputation may be damaged. While our advertisers are typically

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obligated to indemnify us, such indemnification may not fully cover us, or we may not be able to collect. In addition to settlement costs, we may be responsible for our own litigation costs, which can be expensive.

Further, operating in the advertising industry involves numerous commercial relationships, uncertain intellectual property rights and other aspects that create heightened risks of disputes, claims, lawsuits and investigations. In particular, we may face claims related to intellectual property matters, commercial disputes and sales and marketing practices. On May 18, 2021, we filed a complaint against Alphonso, Inc. (“Alphonso”) in the Supreme Court of the State of New York, County of New York (the “Court”), asserting claims for breach of contract, tortious interference with business relations, intentional interference with contractual relations, unjust enrichment, and conversion. The lawsuit arose out of Alphonso’s breach of a Strategic Partnership Agreement and an Advance Payment Obligation and Security Agreement (the “Security Agreement”) with us and related misconduct. We are seeking damages and other relief, including an order foreclosing on Alphonso’s collateral under the Security Agreement, from the Court. See “Business—Legal Proceedings” for futher information. Any commercial dispute, claim, counterclaim, lawsuit or investigation, including our commercial dispute with Alphonso, may divert our management’s attention away from our business, we may incur significant expenses in addressing or defending any commercial dispute, claim, counterclaim or lawsuit or responding to any investigation, and we may be required to pay damage awards or settlements.

We are subject to anti-bribery, anti-corruption and similar laws and non-compliance with such laws can subject us to criminal penalties or significant fines and harm our business and reputation.

We may be subject to certain economic and trade sanctions laws and regulations, export control and import laws and regulations, including those that are administered by the U.S. Department of Treasury’s Office of Foreign Assets Control, the U.S. Department of State, the U.S. Department of Commerce, the United Nations Security Council and other relevant governmental authorities.

We are also subject to the FCPA, the U.K. Bribery Act, Chapter 9 (sub-chapter 5) of the Israeli Penal Law, 5737-1977, the Israeli Prohibition on Money Laundering Law, 5760-2000 and other anti-bribery laws in countries in which we conduct our activities. These laws generally prohibit companies, their employees and third-party intermediaries from authorizing, promising, offering, providing, soliciting or accepting, directly or indirectly, improper payments or benefits to or from any person whether in the public or private sector. In addition, the FCPA’s accounting provisions require us to maintain accurate books and records and a system of internal accounting controls. We have policies, procedures, systems and controls designed to promote compliance with applicable anti-corruption laws.

As we increase our global sales and business, we may engage with business partners and third-party intermediaries to market our solutions and obtain necessary permits, licenses and other regulatory approvals. In addition, we or our third-party intermediaries may have direct or indirect interactions with officials and employees of government agencies or state-owned or affiliated entities. We can be held liable for the corrupt or other illegal activities of these third-party intermediaries, our employees, representatives, contractors, partners and agents, even if we do not authorize such activities.

Our advertisers or publishers may have consumers in countries that are subject to U.S. economic sanctions laws and regulations administered by the Office of Foreign Assets Control (“OFAC”), the Israeli Trade with the Enemy Ordinance, 1939 and sanction laws of the EU and other applicable jurisdictions, which prohibit the sale of products to embargoed jurisdictions or sanctioned parties (“Sanctioned Countries”). We have taken steps to avoid serving advertisements to consumers located in Sanctioned Countries and are implementing various control mechanisms designed to prevent unauthorized dealings with Sanctioned Countries going forward. Although we have taken precautions to prevent our solutions from being provided, deployed or used in violation of sanctions laws, due to the remote nature of our solutions and the potential for manipulation using VPNs, we cannot assure you that our policies and procedures relating to sanctions compliance will prevent any violations in the future. If we are found to be in violation of any applicable sanctions regulations, it can result in significant fines or penalties and possible incarceration for responsible employees and managers, as well as reputational harm and loss of business.

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Despite our compliance efforts and activities, there can be no assurance that our employees or representatives will comply with the relevant laws and we may be held responsible. Noncompliance with anti-corruption, anti-money laundering, export control, economic and trade sanctions and other trade laws could subject us to whistleblower complaints, investigations, sanctions, settlements, prosecution, other enforcement actions, disgorgement of profits, significant fines, damages, other civil and criminal penalties or injunctions, suspension and/or debarment from contracting with certain persons, the loss of export privileges, reputational harm, adverse media coverage and other collateral consequences. If any subpoenas or investigations are initiated, or governmental or other sanctions are imposed, or if we do not prevail in any possible civil or criminal litigation, our business, financial condition and results of operations could be materially harmed. Responding to any action could result in a materially significant diversion of management’s attention and resources and significant defense and compliance costs and other professional fees. In addition, regulatory authorities may seek to hold us liable for successor liability for violations committed by companies in which we invest or that we acquire. As a general matter, enforcement actions and sanctions could harm our business, financial condition and results of operations.

Risks Relating to Our ADSs and the Offering

The price of our ADSs may be volatile, and you may lose all or part of your investment.

The initial public offering price for the ADSs sold in this offering will be determined by negotiation between us and representatives of the underwriters. This price may not reflect the market price of our ADSs following this offering and the price of our ADSs may decline. In addition, the market price of our ADSs could be highly volatile and may fluctuate substantially as a result of many factors, including:

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In addition, the stock markets have experienced extreme price and volume fluctuations. Broad market and industry factors may materially harm the market price of our ADSs, regardless of our operating performance. In the past, following periods of volatility in the market price of a company’s securities, securities class action litigation has often been instituted against that company. If we were involved in any similar litigation we could incur substantial costs and our management’s attention and resources could be diverted.

There has been no prior public market for our ADSs prior to this offering, and an active trading market may not develop in which investors can resell our ADSs.

Prior to this offering, there has been no public market for our ADSs, although our ordinary shares have traded on AIM. An active trading market for our ADSs may not develop following the closing of this offering or, if developed, may not be sustained. The lack of an active market may impair your ability to sell your ADSs at the time you wish to sell them or at a price that you consider reasonable. An inactive market may also impair our ability to raise capital by selling ADSs and may impair our ability to acquire other companies by using our ADSs as consideration.

If we do not meet the expectations of equity research analysts, if they do not publish research or reports about our business or if they issue unfavorable commentary or downgrade our ADSs, the price of our ADSs could decline.

The trading market for our ADSs will rely in part on the research and reports that equity research analysts publish about us and our business. The analysts’ estimates are based upon their own opinions and are often different from our estimates or expectations. If our results of operations are below the estimates or expectations of public market analysts and investors, the price of our ADSs could decline. Moreover, the price of our ADSs could decline if one or more securities analysts downgrade our ADSs or if those analysts issue other unfavorable commentary or cease publishing reports about us or our business.

The dual listing of our ordinary shares and our ADSs following this offering may adversely affect the liquidity and value of our ordinary shares and ADSs.

Following this offering and after our ADSs begin trading on Nasdaq, our ordinary shares will continue to be admitted to trading on AIM in a different currency (U.S. dollars on Nasdaq, and £ on the AIM), and at different times (resulting from different time zones and different public holidays in the United States and the U.K.). We cannot predict the effect of this dual listing on the value of our ADSs and ordinary shares. However, the dual listing of our ADSs and ordinary shares may dilute the liquidity of these securities in one or both markets and may adversely affect the development of an active trading market for our ADSs in the United States. The price of our ADSs could also be adversely affected by trading in our ordinary shares on AIM. Although our ordinary shares are currently admitted to trading on AIM, we may decide to cancel the admission of our ordinary shares to trading on AIM. Cancellation of the admission of our ordinary shares to trading on AIM would require the requisite consent of shareholders in a general meeting prescribed by AIM Rules for Companies, unless the London Stock Exchange agrees otherwise. We cannot predict the effect such cancellation would have on the market price of our ADSs or ordinary shares.

We are eligible to be treated as an emerging growth company, as defined in the Securities Act, and we cannot be certain if the reduced disclosure requirements applicable to emerging growth companies will make our ADSs less attractive to investors because we may rely on these reduced disclosure requirements.

We are eligible to be treated as an emerging growth company, as defined in Section 2(a) of the Securities Act, as modified by the JOBS Act. For as long as we continue to be an emerging growth company, we may take advantage of certain exemptions from various reporting requirements that are applicable to other public companies that are not emerging growth companies, including presenting only limited selected financial data and not being required to comply with the auditor attestation requirements of Section 404 of the Sarbanes-Oxley Act.

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As a result, our shareholders may not have access to certain information that they may deem important. We could be an emerging growth company for up to five years, although circumstances could cause us to lose that status earlier, including if our total annual revenue exceeds $1.07 billion, if we issue more than $1.0 billion in non-convertible debt securities during any three-year period, or if before that time we are a “large accelerated filer” under U.S. securities laws. We cannot predict if investors will find our ADSs less attractive because we may rely on these exemptions. If some investors find our ordinary shares less attractive as a result, there may be a less active trading market for our ordinary shares and our share price may be more volatile.

We will be a foreign private issuer and, as a result, we will not be subject to U.S. proxy rules and will be subject to Exchange Act reporting obligations that, to some extent, are more lenient and less frequent than those of a U.S. domestic public company.

Upon the closing of this offering, we will report under the Exchange Act as a non-U.S. company with foreign private issuer status. Because we qualify as a foreign private issuer under the Exchange Act. We are exempt from certain provisions of the Exchange Act that are applicable to U.S. domestic public companies, including (1) the sections of the Exchange Act regulating the solicitation of proxies, consents or authorizations in respect of a security registered under the Exchange Act, (2) the sections of the Exchange Act requiring insiders to file public reports of their share ownership and trading activities and liability for insiders who profit from trades made in a short period of time and (3) the rules under the Exchange Act requiring the filing with the SEC of quarterly reports on Form 10-Q containing unaudited financial and other specified information, although we are subject to Israeli laws and regulations with regard to certain of these matters and intend to furnish comparable quarterly information on Form 6-K. In addition, foreign private issuers are not required to file their annual report on Form 20-F until 120 days after the end of each fiscal year, while U.S. domestic issuers that are accelerated filers are required to file their annual report on Form 10-K within 75 days after the end of each fiscal year and U.S. domestic issuers that are large accelerated filers are required to file their annual report on Form 10-K within 60 days after the end of each fiscal year. Foreign private issuers are also exempt from Regulation FD, which is intended to prevent issuers from making selective disclosures of material information. As a result of all of the above, you may not have the same protections afforded to shareholders of a company that is not a foreign private issuer.

We may lose our “foreign private issuer” status in the future, which could result in significant additional costs and expenses.

As discussed above, we are a foreign private issuer, and therefore, we are not required to comply with all of the periodic disclosure and current reporting requirements of the Exchange Act. The determination of foreign private issuer status is made annually on the last business day of an issuer’s most recently completed second fiscal quarter, and, accordingly, the next determination will be made with respect to us on June 30, 2021. In the future, we would lose our foreign private issuer status if (1) more than 50% of our outstanding voting securities are owned by U.S. residents and (2) a majority of our directors or executive officers are U.S. citizens or residents, or we fail to meet additional requirements necessary to avoid loss of foreign private issuer status. If we lose our foreign private issuer status, we will be required to file with the SEC periodic reports and registration statements on U.S. domestic issuer forms, which are more detailed and extensive than the forms available to a foreign private issuer. We will also have to mandatorily comply with U.S. federal proxy requirements, and our officers, directors and principal shareholders will become subject to the short-swing profit disclosure and recovery provisions of Section 16 of the Exchange Act. In addition, we will lose our ability to rely upon exemptions from certain corporate governance rules of                 . As a U.S. listed public company that is not a foreign private issuer, we will incur significant additional legal, accounting and other expenses that we will not incur as a foreign private issuer.

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As we are a “foreign private issuer” and intend to follow certain home country corporate governance practices, our shareholders may not have the same protections afforded to shareholders of companies that are subject to all Nasdaq corporate governance requirements.

As a foreign private issuer, we have the option to follow certain home country corporate governance practices rather than those of Nasdaq, provided that we disclose the requirements we are not following and describe the home country practices we are following. We intend to rely on this “foreign private issuer exemption” with respect to Nasdaq rules for shareholder meeting quorums and Nasdaq rules requiring shareholder approval. We may in the future elect to follow home country practices with regard to other matters. As a result, our shareholders may not have the same protections afforded to shareholders of companies that are subject to all Nasdaq corporate governance requirements.

The market price of our ADSs could be negatively affected by future issuances and sales of our ADSs or ordinary shares.

After this offering, there will be                  ordinary shares outstanding. Sales by us or our shareholders of a substantial number of ADSs or ordinary shares in the public market following this offering, or the perception that these sales might occur, could cause the market price of our ADSs to decline or could impair our ability to raise capital through a future sale of, or pay for acquisitions using, our equity securities. Of our issued and outstanding shares, all the ADSs sold in this offering will be freely transferable, except for any shares acquired by our “affiliates,” as that term is defined in Rule 144 under the Securities Act.

There can be no assurance that we will not be classified as a passive foreign investment company, which could result in adverse U.S. federal income tax consequences to United States Holders of our ADSs.

We would be classified as a passive foreign investment company (“PFIC”) for any taxable year if, after the application of certain look-through rules, either: (i) 75% or more of our gross income for such year is “passive income” (as defined in the relevant provisions of the Internal Revenue Code of 1986, as amended), or (ii) 50% or more of the value of our assets (determined on the basis of a quarterly average) during such year is attributable to assets that produce or are held for the production of passive income. For these purposes, cash and other assets readily convertible into cash or that do or could generate passive income are categorized as passive assets, and the value of goodwill and other unbooked intangible assets is generally taken into account. Passive income generally includes, among other things, rents, dividends, interest, royalties, gains from the disposition of passive assets and gains from commodities and securities transactions. For purposes of this test, we will be treated as owning a proportionate share of the assets and earning a proportionate share of the income of any other corporation of which we own, directly or indirectly, 25% or more (by value) of the stock. Based on the current and anticipated composition of our income, assets and operations, and the expected price of the ADSs in this offering, we do not expect to be treated as a PFIC for the current taxable year or in the foreseeable future. However, whether we are a PFIC is a factual determination that must be made annually after the close of each taxable year. Moreover, the value of our assets for purposes of the PFIC determination may be determined by reference to the public price of our ADSs at this initial public offering and future prices, which could fluctuate significantly. In addition, it is possible that the Internal Revenue Service (the “IRS”) may take a contrary position with respect to our determination in any particular year, and therefore, there can be no assurance that we will not be classified as a PFIC in the current taxable year or in the future. Certain adverse U.S. federal income tax consequences could apply to a United States Holder (as defined in “Taxation—U.S. Federal Income Tax Considerations”) if we are treated as a PFIC for any taxable year during which such United States Holder holds our ADSs. United States Holders should consult their tax advisors about the potential application of the PFIC rules to their investment in our ADSs. For further discussion, see “Taxation—Passive Foreign Investment Company.”

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If a United States person is treated as owning at least 10% of our ADSs, such holder may be subject to adverse U.S. federal income tax consequences.

If a United States person is treated as owning (directly, indirectly or constructively) at least 10% of the value or voting power of our ADSs, such person may be treated as a “United States shareholder” with respect to each controlled foreign corporation (“CFC”) in our group (if any). Because our group includes U.S. subsidiaries, certain of our non-U.S. subsidiaries could be treated as CFCs (regardless of whether or not we are treated as a CFC). A United States shareholder of a CFC may be required to report annually and include in its U.S. taxable income its pro rata share of “Subpart F income,” “global intangible low-taxed income,” and investments in U.S. property by CFCs, regardless of whether we make any distributions. An individual that is a United States shareholder with respect to a CFC generally would not be allowed certain tax deductions or foreign tax credits that would be allowed to a United States shareholder that is a U.S. corporation. Failure to comply with these reporting obligations may subject a United States shareholder to significant monetary penalties and may prevent the statute of limitations with respect to such shareholder’s U.S. federal income tax return for the year for which reporting was due from starting. We cannot provide any assurances that we will assist investors in determining whether we are or any of our non-U.S. subsidiaries is treated as a CFC or whether any investor is treated as a United States shareholder with respect to any such CFC or furnish to any United States shareholders information that may be necessary to comply with the aforementioned reporting and tax paying obligations. The IRS has provided limited guidance on situations in which investors may rely on publicly available information to comply with their reporting and tax paying obligations with respect to foreign-controlled CFCs. A United States investor should consult its advisors regarding the potential application of these rules to an investment in our ADSs.

If you purchase ADSs in this offering, you will suffer immediate dilution of your investment.

We expect the initial public offering price of our ADSs in this offering to be substantially higher than the net tangible book value per ADS prior to this offering. Therefore, if you purchase ADSs in this offering, you will pay a price per ADS that substantially exceeds our net tangible book value per ADS after this offering. To the extent additional ordinary shares are issued upon the exercise of outstanding options or the vesting of outstanding RSUs, you may experience further dilution. Based on the assumed initial public offering price of $            per ADS, which reflects the U.S. dollar equivalent of the closing price of our ordinary shares on AIM of £                on                , 2021 (based on an assumed exchange rate of £1.00 to $1.            ), you will experience immediate dilution of $            per ADS, representing the difference between our net tangible book value per ADS and per ordinary share after giving effect to this and the assumed offering price. See “Dilution.”

We have broad discretion over the use of proceeds we receive in this offering and may not apply the proceeds in ways that increase the value of your investment.

We intend to use the net proceeds from this offering for working capital, general corporate purposes and to fund incremental growth, including for possible acquisitions. However, we do not currently have any definitive or preliminary plans with respect to the use of proceeds for such purposes. Consequently, our management will have broad discretion over the specific use of these net proceeds and may do so in a way with which our investors disagree. The failure by our management to apply and invest these funds effectively may not yield a favorable return to our investors and may adversely affect our business and financial condition. Pending their use, we may invest the net proceeds from this offering in a manner that does not produce income or that loses value. If we do not use the net proceeds that we receive in this offering effectively, our business, results of operations and financial condition could be adversely affected.

We will incur increased costs as a result of operating as a U.S. listed public company, and our management will be required to devote substantial time to new compliance initiatives and corporate governance practices.

As a U.S. listed public company, and particularly after we are no longer an emerging growth company, we will incur significant legal, accounting and other expenses that we did not incur previously. The Sarbanes-Oxley

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Act, the Dodd-Frank Wall Street Reform and the Consumer Protection Act, the listing requirements of Nasdaq and their applicable securities rules and regulations impose various requirements on non-U.S. reporting companies, including establishment and maintenance of effective disclosure and financial controls and corporate governance practices. Our management and other personnel will need to devote a substantial amount of time to these compliance initiatives. Moreover, these rules and regulations will increase our legal and financial compliance costs and will make some activities more time-consuming and costly. For example, these rules and regulations may make it more difficult and more expensive for us to obtain director and officer liability insurance and make it more difficult for us to attract and retain qualified members of our board of directors.

We are evaluating these rules and regulations and cannot predict or estimate the amount of additional costs we may incur or the timing of such costs. These rules and regulations are often subject to varying interpretations, in many cases due to their lack of specificity, and, as a result, their application in practice may evolve over time as new guidance is provided by regulatory and governing bodies. This could result in continuing uncertainty regarding compliance matters and higher costs necessitated by ongoing revisions to disclosure and governance practices.

Because we may not pay any cash dividends on our ADSs in the future, capital appreciation, if any, may be your sole source of gains and you may never receive a return on your investment.

Our board of directors has sole discretion whether to pay dividends. If our board of directors decides to pay dividends, the form, frequency, and amount will depend upon our future, operations and earnings, capital requirements and surplus, general financial condition, contractual restrictions and other factors that our directors may deem relevant. The Israeli Companies Law, 5759-1999, or the Companies Law, imposes restrictions on our ability to declare and pay dividends. See “Description of Share Capital and Articles of Association” for additional information. Payment of dividends may also be subject to Israeli withholding taxes. See “Taxation” for additional information. As a result, capital appreciation, if any, on our ADSs may be your sole source of gains, and you will suffer a loss on your investment if you are unable to sell your ADSs at or above the offering price. See “Dividend Policy.”

Securities traded on AIM may carry a higher risk than securities traded on other exchanges, which may impact the value of your investment.

Our ordinary shares are currently traded on AIM. Investment in equities traded on AIM is sometimes perceived to carry a higher risk than an investment in equities quoted on exchanges with more stringent listing requirements, such as the main market of the London Stock Exchange, New York Stock Exchange or the Nasdaq Stock Market. This is because AIM is less heavily regulated and imposes less stringent corporate governance and ongoing reporting requirements than those other exchanges. In addition, AIM requires only half-yearly, rather than quarterly (which would apply to us in the U.S., if we are no longer classified as a foreign private issuer), financial reporting. You should be aware that the value of our ordinary shares may be influenced by many factors, some of which may be specific to us and some of which may affect AIM-quoted companies generally, including the depth and liquidity of the market, our performance, a large or small volume of trading in our ordinary shares, legislative changes and general economic, political or regulatory conditions, and that the prices may be volatile and subject to extensive fluctuations. Therefore, the market price of our ordinary shares, our ADSs or the ordinary shares underlying our ADSs, may not reflect the underlying value of our company.

You may not be able to exercise your right to vote the ordinary shares underlying your ADSs.

ADS holders may only exercise voting rights with respect to the ordinary shares underlying their respective ADSs in accordance with the provisions of the deposit agreement, which provides that a holder may vote the ordinary shares underlying any ADSs for any particular matter to be voted on by our shareholders either by withdrawing the ordinary shares underlying the ADSs or, to the extent permitted by applicable law and as permitted by the depositary, by requesting a temporary registration as shareholder and authorizing the depositary

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to act as proxy. However, you may not know about the meeting far enough in advance to withdraw those ordinary shares, and after such a withdrawal you would no longer hold ADSs, but rather you would directly hold the underlying ordinary shares. You also may not know about the meeting far enough in advance to request a temporary registration.

The depositary will try, as far as practical, to vote the ordinary shares underlying the ADSs as instructed by the ADS holders. In such an instance, if we ask for your instructions, the depositary, upon timely notice from us, will notify you of the upcoming vote and arrange to deliver our voting materials to you. We cannot guarantee that you will receive the voting materials in time to ensure that you can instruct the depositary to vote your ordinary shares or to withdraw your ordinary shares so that you can vote them yourself. If the depositary does not receive timely voting instructions from you, it may give a discretionary proxy to a person designated by us to vote the ordinary shares underlying your ADSs; provided, however, that no such discretionary proxy shall be given with respect to any matter to be voted upon as to which we inform the depositary that (i) we do not wish such proxy to be given, (ii) substantial opposition exists, or (iii) the rights of holders of ordinary shares may be adversely affected. Voting instructions may be given only in respect of a number of ADSs representing an integral number of ordinary shares or other deposited securities. In addition, the depositary and its agents are not responsible for failing to carry out voting instructions or for the manner of carrying out voting instructions. This means that you may not be able to exercise any right to vote that you may have with respect to the underlying ordinary shares, and there may be nothing you can do if the ordinary shares underlying your ADSs are not voted as you requested. In addition, the depositary is only required to notify you of any particular vote if it receives notice from us in advance of the scheduled meeting.

You will not be directly holding our ordinary shares. Holders of the ADSs will not be able to exercise the preemptive subscription rights related to the ordinary shares that they represent and may suffer dilution of their equity holding in the event of future issuances of our ordinary shares.

As an AIM-quoted company, our articles of association currently in effect follow English law which generally provides shareholders with preemptive rights when new shares are issued for cash. Shareholders’ preemptive subscription rights, in the event of issuances of ordinary shares against cash payment, may be disapplied by a special resolution of the shareholders at a general meeting of our shareholders. The absence of preemptive rights for existing equity holders may cause dilution to such holders.

Furthermore, the ADS holders would not be entitled, even if such rights accrued to our shareholders in any given instance, to receive such preemptive subscription rights related to the ordinary shares that they represent. Rather, the depositary is required to endeavor to sell any such subscription rights that may accrue to the ordinary shares underlying the ADSs and to remit the net proceeds therefrom to the ADS holders pro rata. In addition, if the depositary is unable to sell rights, the depositary will allow the rights to lapse, in which case you will receive no value for these rights. Further, if we offer holders of our ordinary shares the option to receive dividends in either cash or ordinary shares, under the deposit agreement, ADS holders will not be permitted to elect to receive dividends in ordinary shares or cash, but will receive whichever option we provide as a default to shareholders who fail to make such an election.

Purchasers of ADSs in this offering may not receive distributions on our ordinary shares in the form of ADSs or any value for them if it is illegal or impractical to make them available to holders of ADSs.

The depositary for our ADSs has agreed to pay to purchasers of ADSs in this offering the cash dividends or other distributions it or the custodian receives on our ordinary shares or other deposited securities after deducting its fees and expenses. Purchasers of our ADSs will receive these distributions in proportion to the number of our ordinary shares their ADSs represent. However, in accordance with the limitations set forth in the deposit agreement, it may be unlawful or impractical to make a distribution available to holders of ADSs. We have no obligation to take any other action to permit the distribution of our ADSs, ordinary shares, rights or anything else to holders of our ADSs. This means that purchasers of ADSs in this offering may not receive the distributions we

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make on our ordinary shares or any value from them if it is unlawful or impractical to make them available to them. These restrictions may have a material adverse effect on the value of a purchaser’s ADSs.

ADS holders may not be entitled to a jury trial with respect to claims arising under the deposit agreement, which could result in less favorable outcomes to the plaintiff(s) in any such action.

The deposit agreement governing the ADSs representing our ordinary shares provides that, to the fullest extent permitted by applicable law, holders and beneficial owners of ADSs irrevocably waive the right to a jury trial of any claim that they may have against us or the depositary arising from or relating to our ordinary shares, our ADSs or the deposit agreement, including any claim under the U.S. federal securities laws. The waiver continues to apply to claims that arise during the period when a holder holds the ADSs, even if the ADS holder subsequently withdraws the underlying ordinary shares.

However, you will not be deemed, by agreeing to the terms of the deposit agreement, to have waived our or the depositary’s compliance with U.S. federal securities laws and the rules and regulations promulgated thereunder. In fact, you cannot waive our or the depositary’s compliance with U.S. federal securities laws and the rules and regulations promulgated thereunder. If we or the depositary opposed a demand for jury trial relying on above-mentioned jury trial waiver, it is up to the court to determine whether such waiver was enforceable considering the facts and circumstances of that case in accordance with the applicable state and federal law.

If this jury trial waiver provision is prohibited by applicable law, an action could nevertheless proceed under the terms of the deposit agreement with a jury trial. To our knowledge, the enforceability of a jury trial waiver under the federal securities laws has not been finally adjudicated by a federal court or by the United States Supreme Court. Nonetheless, we believe that a jury trial waiver provision is generally enforceable under the laws of the State of New York, which govern the deposit agreement, by a federal or state court in the City of New York. In determining whether to enforce a jury trial waiver provision, New York courts will consider whether the visibility of the jury trial waiver provision within the agreement is sufficiently prominent such that a party has knowingly waived any right to trial by jury. We believe that this is the case with respect to the deposit agreement and the ADSs. In addition, New York courts will not enforce a jury trial waiver provision in order to bar a viable setoff or counterclaim sounding in fraud or one which is based upon a creditor’s negligence in failing to liquidate collateral upon a guarantor’s demand, or in the case of an intentional tort claim, none of which we believe are applicable in the case of the deposit agreement or the ADSs. If you or any other holders or beneficial owners of ADSs bring a claim against us or the depositary relating to the matters arising under the deposit agreement or our ADSs, including claims under federal securities laws, you or such other holder or beneficial owner may not have the right to a jury trial regarding such claims, which may limit and discourage lawsuits against us or the depositary. If a lawsuit is brought against us or the depositary according to the deposit agreement, it may be heard only by a judge or justice of the applicable trial court, which would be conducted according to different civil procedures and may have different outcomes compared to that of a jury trial, including results that could be less favorable to the plaintiff(s) in any such action.

Moreover, as the jury trial waiver relates to claims arising out of or relating to the ADSs or the deposit agreement, we believe that, as a matter of construction of the clause, the waiver would likely continue to apply to ADS holders who withdraw the ordinary shares from the ADS facility with respect to claims arising before the cancellation of the ADSs and the withdrawal of the ordinary shares, and the waiver would most likely not apply to ADS holders who subsequently withdraw the ordinary shares represented by ADSs from the ADS facility with respect to claims arising after the withdrawal. However, to our knowledge, there has been no case law on the applicability of the jury trial waiver to ADS holders who withdraw the ordinary shares represented by the ADSs from the ADS facility.

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Holders of our ADSs or ordinary shares have limited choice of forum, which could limit your ability to obtain a favorable judicial forum for complaints against us, the depositary or our respective directors, officers or employees.

The deposit agreement governing our ADSs provides that, (i) the deposit agreement and the ADSs will be interpreted in accordance with the laws of the State of New York, and (ii) as an owner of ADSs, you irrevocably agree that any legal action arising out of the deposit agreement and the ADSs involving us or the depositary may only be instituted in a state or federal court in the city of New York. Any person or entity purchasing or otherwise acquiring any our ADSs, whether by transfer, sale, operation of law or otherwise, shall be deemed to have notice of and have irrevocably agreed and consented to these provisions.

This choice of forum provision may increase your cost and limit your ability to bring a claim in a judicial forum that you find favorable for disputes with us, the depositary or our and the depositary’s respective directors, officers or employees, which may discourage such lawsuits against us, the depositary and our and the depositary’s respective directors, officers or employees. However, it is possible that a court could find either choice of forum provision to be inapplicable or unenforceable. The enforceability of similar choice of forum provisions has been challenged in legal proceedings. It is possible that a court could find this type of provisions to be inapplicable or unenforceable.

To the extent that any such claims may be based upon federal law claims, Section 27 of the Exchange Act creates exclusive federal jurisdiction over all suits brought to enforce any duty or liability created by the Exchange Act or the rules and regulations thereunder. Furthermore, Section 22 of the Securities Act creates concurrent jurisdiction for federal and state courts over all suits brought to enforce any duty or liability created by the Securities Act or the rules and regulations thereunder. Accordingly, actions by holders of our ADSs or ordinary shares to enforce any duty or liability created by the Exchange Act, the Securities Act or the respective rules and regulations thereunder must be brought in a federal court in the city of New York. Holders of our ADSs or ordinary shares will not be deemed to have waived our compliance with the federal securities laws and the regulations promulgated thereunder.

Purchasers of ADSs in this offering may be subject to limitations on transfer of their ADSs.

ADSs are transferable on the books of the depositary. However, the depositary may close its transfer books at any time or from time to time when it deems expedient in connection with the performance of its duties. In addition, the depositary may refuse to deliver, transfer or register transfers of ADSs generally when our books or the books of the depositary are closed, or at any time if we or the depositary deems it advisable to do so because of any requirement of law or of any government or governmental body, or under any provision of the deposit agreement, or for any other reason in accordance with the terms of the deposit agreement.

Exposure to foreign currency exchange rate fluctuations could negatively impact our results of operations.

While the majority of the transactions through our platform are denominated in U.S. dollars, we have transacted in foreign currencies, both for inventory and for payments by advertisers or publishers from use of our platform. We also have expenses denominated in currencies other than the U.S. dollar. Given our anticipated international growth, we expect the number of transactions in a variety of foreign currencies to continue to grow in the future. While we generally require a fee from advertisers or publishers that pay in non-U.S. currency, this fee may not always cover foreign currency exchange rate fluctuations. Although we currently have a program to hedge exposure to foreign currency fluctuations, the use of hedging instruments may not be available for all currencies or may not always offset losses resulting from foreign currency exchange rate fluctuations. Moreover, the use of hedging instruments can itself result in losses if we are unable to structure effective hedges with such instruments.

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A small number of significant beneficial owners of our shares acting together have significant influence over matters requiring shareholder approval, which could delay or prevent a change of control.

The three largest beneficial owners of our ordinary shares, entities and individuals affiliated with Mithaq Capital SPC, Toscafund Asset Management LLP and Schroder Investment Management, each of which currently beneficially owns more than 10.0% of our outstanding ordinary shares, and in the aggregate 52.0% of our ordinary shares, are expected to beneficially own in the aggregate            % of our ordinary shares after this offering, or    % if the underwriters exercise in full their option to purchase additional ADSs in this offering. As a result, these shareholders, acting together, could exercise significant influence over our operations and business strategy and will have sufficient voting power to influence the outcome of matters requiring shareholder approval. These matters may include:

This concentration of ownership of our ADSs or ordinary shares could delay or prevent proxy contests, mergers, tender offers, open-market purchase programs or other purchases of our ADSs or ordinary shares that might otherwise give you the opportunity to realize a premium over the then-prevailing market price of our ADSs. This concentration of ownership may also adversely affect our share price.

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SPECIAL NOTE REGARDING FORWARD-LOOKING STATEMENTS

This prospectus contains estimates and forward-looking statements. In some cases, these forward-looking statements can be identified by words or phrases such as “may,” “might,” “will,” “could,” “would,” “should,” “expect,” “plan,” “anticipate,” “intend,” “seek,” “believe,” “estimate,” “predict,” “potential,” “continue,” “contemplate,” “possible” or the negative of these terms or similar expressions. Forward-looking statements contained in this prospectus include, but are not limited to, statements about:

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The forward-looking statements in this prospectus are only predictions. We have based these forward-looking statements largely on our current expectations and projections about future events and financial trends that we believe may affect our business, financial condition and results of operations. Forward-looking statements involve known and unknown risks, uncertainties and other important factors that may cause our actual results, performance or achievements to be materially different from any future results, performance or achievements expressed or implied by the forward-looking statements. We believe that these factors include, but are not limited to the factors set forth under “Risk Factors.” Because forward-looking statements are inherently subject to risks and uncertainties, some of which cannot be predicted or quantified, you should not rely on these forward-looking statements as predictions of future events. The events and circumstances reflected in our forward-looking statements may not be achieved or occur and actual results could differ materially from those projected in the forward-looking statements.

In addition, statements that “we believe” and similar statements reflect our beliefs and opinions on the relevant subject. These statements are based upon information available to us as of the date of this prospectus, and while we believe such information forms a reasonable basis for such statements, such information may be limited or incomplete, and our statements should not be read to indicate that we have conducted an exhaustive inquiry into, or review of, all potentially available relevant information.

These statements are inherently uncertain and investors are cautioned not to unduly rely upon these statements.

You should read this prospectus and the documents that we reference in this prospectus and have filed as exhibits to the registration statement of which this prospectus forms a part with the understanding that our actual future results, levels of activity, performance and achievements may be materially different from what we expect. We qualify all of our forward-looking statements by these cautionary statements.

The estimates and forward-looking statements contained in this prospectus speak only as of the date of this prospectus. Except as required by applicable law, we undertake no obligation to publicly update or revise any estimates or forward-looking statements whether as a result of new information, future events or otherwise, or to reflect the occurrence of unanticipated events.

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USE OF PROCEEDS

We estimate that the net proceeds to us from this offering will be approximately $         million (or approximately $             million if the underwriters exercise their option to purchase additional ADSs from us in full), after deducting underwriting discounts and commissions and estimated offering expenses, based on an assumed initial public offering price of $             per ADS, the U.S. dollar equivalent of the closing price of our ordinary shares on AIM of £         on             , 2021 (based on an assumed exchange rate of £1.00 to $1.            ).

Each $1.00 increase (decrease) in the assumed initial public offering price of $        per ADS would increase (decrease) the net proceeds to us from this offering by approximately $             million, assuming the number of ADSs offered by us, as set forth on the cover page of this prospectus, remains the same and after deducting underwriting discounts and commissions and estimated offering expenses.

Each increase (decrease) of 1,000,000 ADSs in the number of ADSs offered by us would increase (decrease) the net proceeds to us from this offering by approximately $             million, assuming that the assumed initial public offering price remains the same, and after deducting the underwriting discounts and commissions and estimated offering expenses. Expenses of this offering will be paid by us.

The principal purposes of this offering are to create a public market for our ADSs, facilitate greater access to the public equity markets, increase our visibility in the marketplace, as well as to obtain additional capital. We intend to use the net proceeds from this offering for working capital, general corporate purposes and to fund incremental growth, including for possible acquisitions. However, we do not currently have any definitive or preliminary plans with respect to the use of proceeds for such purposes.

We will have broad discretion in the way that we use the net proceeds from this offering. Our use of the net proceeds from this offering will depend on a number of factors, including our future revenue and cash generated by operations and the other factors described in “Risk Factors.”

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DIVIDEND POLICY

Our board of directors has sole discretion whether to pay dividends. If our board of directors decides to pay dividends, the form, frequency and amount will depend upon our future operations and earnings, capital requirements and surplus, general financial condition, contractual restrictions and other factors that our directors may deem relevant. Although we have paid dividends and conducted share buybacks in the past, we do not anticipate paying any dividends in the foreseeable future. We currently intend to retain future earnings, if any, to finance operations and expand our business.

The Companies Law imposes restrictions on our ability to declare and pay dividends. See “Description of Share Capital and Articles of Association—Dividend and Liquidation Rights” for additional information. See also “Risk Factors—Risks Related to Our ADSs and the Offering—Because we may not pay any cash dividends on our ADSs in the future, capital appreciation, if any, may be your sole source of gains and you may never receive a return on your investment.”

Payment of dividends may be subject to Israeli withholding taxes. See “Taxation and Government Programs—Israeli Tax Considerations” for additional information.

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CAPITALIZATION

The following table sets forth our cash and cash equivalents and total capitalization as of March 31, 2021, as follows:

You should read this information in conjunction with our consolidated financial statements and the related notes appearing at the end of this prospectus and the “Management’s Discussion and Analysis of Financial Condition and Results of Operations” section and other financial information contained in this prospectus.

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DILUTION

If you invest in our ADSs, your interest will be diluted to the extent of the difference between the initial public offering price per ADS and the as adjusted net tangible book value per share immediately following the consummation of this offering.

At March 31, 2021, we had a historical net tangible book value of $             million, corresponding to a net tangible book value of $             per ordinary share or $             per ADS based on an ordinary share to ADS ratio of                     . Net tangible book value per share represents the amount of our total assets less our total liabilities, excluding goodwill and other intangible assets, divided by the total number of our ordinary shares outstanding.

After giving effect to the sale by us of                      ADSs (representing an aggregate of                     ordinary shares) in this offering at the assumed initial public offering price of $             per ADS, which reflects the U.S. dollar equivalent of the closing price of our ordinary shares on AIM of £             on                , 2021 (based on an assumed exchange rate of £1.00 to $1.            ), after deducting the estimated underwriting discounts and commissions and estimated offering expenses, our as adjusted net tangible book value at March 31, 2021 would have been approximately $             million, representing $             per ordinary share or $             per ADS. This represents an immediate increase in net tangible book value of $             per ordinary share or $             per ADS to existing shareholders and an immediate dilution in net tangible book value of $             per ordinary share or $             per ADS to new investors purchasing ADSs in this offering at the assumed initial public offering price. Dilution in net tangible book value per ADS to new investors is determined by subtracting as adjusted net tangible book value per ADS after this offering from the assumed initial public offering price per ADS paid by new investors.

The following table illustrates this dilution to new investors purchasing ADSs in the offering.

If the underwriters exercise their option to purchase additional ADSs from us in full, our as adjusted net tangible book value per ADS after this offering would be $             per ADS, representing an immediate increase in as adjusted net tangible book value of $             per ADS to existing shareholders and immediate dilution of $             per ADS in as adjusted net tangible book value per ADS to new investors based on an assumed initial public offering price of $             per ADS, which reflects the U.S. dollar equivalent of the closing price of our ordinary shares on AIM of £            on                , 2021 (based on an assumed exchange rate of £1.00 to $1.            ), after deducting underwriting discounts and commissions and estimated offering expenses.

Each $1.00 increase (decrease) in the assumed initial public offering price of $             per ADS, which reflects the U.S. dollar equivalent of the closing price of our ordinary shares on AIM of £            on                 , 2021 (based on an assumed exchange rate of £1.00 to $1.            ), would increase (decrease) the as adjusted net tangible book value after this offering by $             per ADS and the dilution to new investors in the offering by $             per ADS, assuming the number of ADSs offered by us, as set forth on the cover page of this prospectus, remains the same and after deducting underwriting discounts and commissions and estimated offering expenses.

The as adjusted dilution information discussed above is illustrative only and will change based on the actual initial public offering price and other terms of this offering determined at pricing.

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The following table summarizes, on an as adjusted basis described above as of March 31, 2021, the differences between the number of ordinary shares purchased from us, the total consideration paid to us in cash and the average price per ordinary share paid, in each case by existing shareholders, on the one hand, and new investors in this offering, on the other hand. The calculation below is based on an assumed initial public offering price of $             per ADS, which reflects the U.S. dollar equivalent of the closing price of our ordinary shares on AIM of £            on                 , 2021 (based on an assumed exchange rate of £1.00 to $1.            ), before deducting underwriting discounts and commissions and estimated offering expenses.

To the extent any of our outstanding options is exercised or any our outstanding RSUs is vested, there will be further dilution to new investors.

If the underwriters exercise their option to purchase additional ADSs from us in full:

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MANAGEMENT’S DISCUSSION AND ANALYSIS OF

FINANCIAL CONDITION AND RESULTS OF OPERATIONS

You should read the following discussion together with “Selected Consolidated Financial Data” and the consolidated financial statements and related notes included elsewhere in this prospectus. This discussion contains forward-looking statements regarding industry outlook and our expectations regarding our future performance, liquidity and capital resources, as well as other non-historical statements. These forward-looking statements are subject to numerous risks and uncertainties, including, but not limited to, the risks and uncertainties described in “Risk Factors” and “Special Note Regarding Forward-Looking Statements.” Our actual results may differ materially from those contained in or implied by any forward-looking statements.

Following the acquisition of Unruly in 2020, we changed our Programmatic business, tech stack, features, business models and activity, requiring an analysis of whether we act as a principal or an agent, which led us to determine that we act as an agent, and not as principal. Therefore, effective January 1, 2020, we recognize revenue on a net basis for the Programmatic activity, which had been recognized on a gross basis historically, including for the year ended December 31, 2019. Our results of operations for the years ended December 31, 2020 and 2019 are not directly comparable as a result of recognizing revenue on a net basis for the Programmatic revenue for the year ended December 31, 2020. See “—Critical Accounting Policies, Judgments and Estimates—Revenue Recognition” for information regarding the revenue recognition presentation change.

Overview

We are a global company offering an end-to-end software platform that enables advertisers to reach relevant audiences and publishers to maximize yield on their digital advertising inventory. We use our proprietary technology to deliver impactful brand stories to target audiences through digital ad technology and advanced audience data. Our omni-channel capabilities deliver global advertising campaigns across all formats and channels, with an expertise in Video and CTV.

We believe there is a significant market opportunity within the approximately $455 billion global digital advertising market that is expected to grow at a CAGR of 11.4% through 2025, according to eMarketer. Digital publishers rely on advertising to support their businesses and brands, and advertisers use this medium to capture uniquely targeted and viewable impressions. We believe the digital advertising market remains fragmented and that our full service end-to-end software platform and vast expertise within Video and CTV puts us in a strong position to continue to increase our market share from traditional ad sales channels.

We believe that we are positioned to benefit from several trends in the evolving advertising ecosystem, including the proliferation of digital media consumption, adoption of programmatic advertising, a growing focus on premium formats such as Video and CTV, and the increasing sophistication of the overall digital landscape. We address the broad and evolving digital advertising market through our three core offerings, including a proprietary DSP solution that advertisers leverage to manage digital advertising campaigns, a proprietary SSP solution that publishers leverage to optimally monetize digital inventory and a proprietary DMP solution which is integrated with both our DSP and SSP solutions. Our versatile DMP solution benefits from vast amounts of data and provides optimal campaign recommendations for audience sets by employing advanced machine learning algorithms. The contextualization of the data synthesized by our DMP solution provides our advertisers with a comprehensive, personalized view of audiences, enabling more effective targeting across formats and devices and optimizes the monetization of publisher inventory. By combining these three proprietary solutions as well as integrations with industry leading partners, we provide an end-to-end software platform that is dynamic and flexible to our customers’ needs, which enables us to address more digital ad spend.

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Our customers are both ad buyers, including brands and agencies, and digital publishers. Our platform included a diversified customer base of approximately 900 active customers and 1,450 active publishers as of March 31, 2021 with approximately 800 million unique users for the month ended March 31, 2021, which serves advertisements in over 100 countries.

We generate revenue through platform fees that are tailored to fit the customer’s specific utilization of our solutions and include (i) a percentage of spend, (ii) flat fees and (iii) fixed CPM.

The advertising industry was significantly impacted at the end of first quarter and throughout the second quarter of 2020 by the outbreak of the COVID-19 pandemic and the resulting economic uncertainty in the global economy, including in the United States (where the majority of our revenue is generated). As a result, advertising demand on our platform decreased significantly in the first half of 2020, as economic activity across most markets contracted and marketing budgets were reduced. However, as parts of the economy reopened at the end of the second quarter of 2020, the advertising industry and related spend responded with a robust recovery in the second half of 2020. Although certain industries, such as travel, retail and hospitality, continued to limit advertising spending over this period, other industries drove significant growth in advertising spending, particularly in Video (including CTV).

As a result, our Video revenue grew from $42.1 million in the six months ended June 30, 2020 to $101.3 million in the six months ended December 31, 2020. Our Video revenue growth included the rapid growth of CTV revenue over the same period, which grew from $11.0 million in the six months ended June 30, 2020 to $25.8 million in the six months ended December 31, 2020. This growth of Video (including CTV) revenue contributed to growth in Programmatic revenue of 30% for the year ended December 31, 2020 from the comparable as adjusted (non-IFRS) revenue basis for the year ended December 31, 2019.

Our total comprehensive income for the six months ended December 31, 2020 increased $64.1 million from the equivalent figure for the six months ended June 30, 2020 and represented a 219% year-over-year increase as compared to our total comprehensive income for the six months ended December 31, 2019. We generated $5.0 million and $6.4 million in total comprehensive income in the years ended December 31, 2020 and 2019, respectively. Our Adjusted EBITDA for the six months ended December 31, 2020 increased approximately 33 times from the equivalent figure for the six months ended June 30, 2020 and represented a 51% year-over-year increase as compared to our Adjusted EBITDA for the six months ended December 31, 2019. Additionally, we generated $60.5 million and $60.4 million in Adjusted EBITDA in the years ended December 31, 2020 and 2019, respectively, resulting in a cash position of $97.5 million as of December 31, 2020.

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Our Business Model

Our end-to-end platform is a comprehensive software suite that supports a wide range of media types (e.g., Video, display, etc.) and devices (e.g., mobile, CTVs, streaming devices, desktop, etc.), creating an efficient marketplace where advertisers are able to purchase high quality advertising inventory from publishers at scale. Our solutions offer many advantages, including an advanced real-time bidding auction optimization engine, a quality and global marketplace, and flexibility to enact concurrent campaign strategies that drives strong returns for investments in digital ad real estate.

Our platform handles over 100 billion daily ad requests, approximately 500 terabytes of daily data and approximately 250 million daily ad impressions. Each transaction is processed in a fraction of a second (55ms on average) and powered by our real-time bidding engine, which leverages thousands of private servers and infrastructure in three strategically located data centers located in the United States, Europe and Asia Pacific.

Key Components of our platform include:

Key Factors Affecting Our Results of Operations

We believe our results of operations is influenced by several factors, including the following:

Attract, Retain and Grow our Customer Base: Our recent growth has been driven by expanding the usage of our platform by our existing advertisers and publishers as well as by adding new advertisers and publishers. As a result, our revenue growth depends upon our ability to retain our existing advertisers and publishers and to capture a larger amount of their advertising spend through our platform. For the three months ended March 31, 2021, we achieved gross profit per active customer (calculated as our gross profit for the period divided by our active customers for the period) of $54 thousand, Contribution ex-TAC per active customer (calculated as our Contribution ex-TAC for the period divided by our active customers for the period) of $69 thousand and generated total revenue of $71.0 million. In comparison, for the three months ended March 31, 2020, we achieved gross profit per active customer of $20 thousand, Contribution ex-TAC per active customer of $31 thousand and generated total revenue of $38.6 million.

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For the year ended December 31, 2020, we achieved gross profit per active customer of $149 thousand and Contribution ex-TAC per active customer of $207 thousand. Despite a negative COVID-19 impact on the number of active customers for the year ended December 31, 2020, we generated total revenue of $211.9 million for the year ended December 31, 2020. In particular, in the first half of 2020, our business was negatively impacted by the COVID-19 pandemic, which resulted in a decrease in advertising demand globally. As business promotion activities started to recover, the second half of 2020 saw a significant resurgence of advertising spend, except for certain verticals such as travel, retail and hospitality.

We have demonstrated our ability to retain existing advertisers and publishers, including during 2020, which presented unique challenges due to the COVID-19 pandemic. For the year ended December 31, 2020, 83% of our customers were active customers for a period of more than two years. Meanwhile, 10% of our customers became active customers during the year ended December 31, 2020, with the remaining 7% of our customer base being active customers for between one and two years.

We continue to add functionality to our platform to encourage existing advertisers or publishers to increase their usage of our platform. As a result of this and other similar engagement initiatives, we achieved a Contribution ex-TAC retention rate of 112% for the year ended December 31, 2020.

Investment in Growth: We believe that the advertising market is in the early stages of a secular shift towards digital video advertising. We have been specializing in digital video advertising, which collectively accounts for 89% of our Programmatic revenue for the year ended December 31, 2020 and 91% of our Programmatic revenue for the three months ended March 31, 2021. We plan to invest in long-term growth by focusing on the main drivers of digital advertising growth – Video and CTV. We anticipate that our operating expenses will increase in the foreseeable future as we invest in platform operations and technology and development to enhance our product capabilities including deployment of more self-serve capabilities both to our advertisers and publishers, expediting data relationships and technology, adding more ad formats to our platform (e.g., audio, display, etc.). We believe that these investments will contribute to our long-term growth, although it is uncertain whether they may impact our profitability in the near-term.

Growth of the Digital Advertising Market and Macroeconomics Factors: We expect to continue to benefit from overall adoption of digital video advertising by both advertisers and publishers. Any material change in the growth rate of digital video advertising or the rate of adoption could affect our performance. Recent trends have indicated that advertising spend is closely tied to advertisers’ financial performance and economic conditions, either generally or in one or more of the industries in which our advertisers operate or our publishers focus. An economic downturn could adversely impact the digital advertising market and our operating results. For example, the challenges posed by the COVID-19 pandemic on the global economy increased significantly as the first quarter of 2020 progressed and continued throughout 2020 and into 2021. In response to COVID-19, national and local governments around the world have instituted certain measures, including travel bans, prohibitions on group events and gatherings, shutdowns of certain businesses, curfews, shelter-in-place orders and recommendations to practice social distancing. Certain marketers in industries such as travel and tourism, hospitality and automotive, decreased or paused their advertising spend as a response to the economic uncertainty. In the first half of 2020, our business was negatively impacted by the COVID-19 pandemic.

As the overall economic environment improved during the second half of 2020, our Video revenue and CTV revenue grew from $42.1 million and $11.0 million, respectively, in the six months ended June 30, 2020 to $101.3 million and $25.8 million, respectively, in the six months ended December 31, 2020. This growth of Video (including CTV) contributed to growth in Programmatic revenue of 30% for the year ended December 31, 2020 from the comparable as adjusted (non-IFRS) revenue basis for the year ended December 31, 2019.

In addition, the economic uncertainty caused by the COVID-19 pandemic has made and may continue to make it difficult for us to forecast revenue and operating results and to make decisions regarding operational cost structures and investments. The ultimate impact of COVID-19 on the Company’s results of operations, financial

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condition and cash flows is dependent on future developments, including the duration of the COVID-19 pandemic and its impact on the global economy, which are uncertain and cannot be predicted at this time. For further discussion of the potential impacts of the COVID-19 pandemic on our business, see “Risk Factors—Our revenue and results of operations are highly dependent on the overall demand for advertising. Factors that affect the amount of advertising spending, such as economic downturns and the COVID-19 pandemic, can make it difficult to predict our revenue and could adversely affect our business, results of operations, and financial condition.”

Seasonality: In the advertising industry, companies commonly experience seasonal fluctuations in revenue. For example, many marketers allocate the largest portion of their budgets to the fourth quarter of the calendar year in order to coincide with increased holiday purchasing. Historically, the fourth quarter of the year has reflected our highest level of advertising activity for the year. We generally expect the subsequent first quarter to reflect lower activity levels. In addition, historical seasonality may not be predictive of future results given the potential for changes in advertising buying patterns and consumer activity due to the COVID-19 pandemic. For example, in 2020, advertising activities were less associated with the holiday spending patterns. Instead, as business activities adapt into the new environment amid the COVID-19 pandemic, in the second half of 2020, we saw a significant resurgence in advertising demand on our platform. Nevertheless, as countries recover from the COVID-19 pandemic and return to pre-pandemic business conditions, we expect our revenue to continue to fluctuate based on seasonal factors that affect the advertising industry as a whole.

Critical Accounting Policies, Judgments and Estimates

We prepare our consolidated financial statements in accordance with IFRS as issued by the IASB. In preparing our audited consolidated financial statements, we make assumptions, judgments and estimates that can have a significant impact on amounts reported in our consolidated financial statements. We base our assumptions, judgments and estimates on historical experience and various other factors that we believe to be reasonable under the circumstances. Actual results could differ materially from these estimates under different assumptions or conditions. We regularly re-evaluate our assumptions, judgments and estimates. Our critical accounting estimates and judgments are described in Note 2 to our audited consolidated financial statements included elsewhere in this prospectus.

An accounting policy is deemed to be critical if it requires an accounting estimate to be made on assumptions about matters that are highly uncertain at the time the estimate is made, if different estimates reasonably could have been used, or if changes in the estimate that are reasonably possible could materially impact the financial statements. We consider the following to be our critical accounting policies and estimates.

In this section, we use the following terms:

“Programmatic” means our end-to-end platform of programmatic advertising, which uses software and algorithms to match buyers and sellers of digital advertising in a technology-driven marketplace; transactions in our Programmatic activities are executed in milliseconds and beginning in 2020, human intervention or discretion for execution has significantly decreased.

“Performance” means our non-core performance activities consisting primarily of mobile-based solutions that help brands reach their users; revenue generated in the Performance activities is contingent on the occurrence of performance-based metrics, such as app downloads and installations.

Revenue Recognition

We generate revenue from transactions where we provide access to our platform for the purchase and sale of digital advertising inventory. Our customers are both ad buyers, including brands and agencies, and digital publishers. We generate revenue through platform fees that are tailored to fit our customer’s specific utilization of our solutions and include: (i) a percentage of spend, (ii) flat fees and (iii) fixed CPM.

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We maintain written service agreement with each publisher and buyer, which set out the terms of the relationship, including payment terms and access to our platform.

Publishers provide digital advertising inventory to our platform in the form of advertising requests, or ad requests. When we receive ad requests from a publisher, we send bid requests to buyers, which enable buyers to bid on sellers’ digital advertising inventory according to a predefined set of parameters (e.g., demographics, intent, location, etc.). Winning bids create advertising, or paid impressions, for the publisher to present to the buyers.

We generate revenue from our Programmatic and Performance activities. Programmatic revenue is derived from the end-to-end platform of programmatic advertising, which uses software and algorithms to match buyers and sellers of digital advertising in a technology-driven marketplace. Performance revenue is derived from non-core activities, consisting of mobile-based activities that help brands reach their users.

Prior to the acquisitions of RhythmOne and its integration into us and the acquisition of Unruly in the beginning of 2020 (i.e. for the year ended December 31, 2019), we determined that we operated as a principal with respect to its Programmatic activity and therefore presented revenue on a gross basis mainly as: (i) we operated predominantly through a DSP platform prior to the acquisition and full integration of RhythmOne, (ii) we were highly involved in execution of the process, which required certain manual operations by our employees and (iii) we determined that we had an implicit obligation to provide credits and inducements to customers to encourage use of the platform. That is, we determined, on this basis, that we had an implicit obligation to provide advertising space to customers, even though the contractual terms and conditions (including our Master Service Agreements (“MSAs”) and insertion order do not explicitly state that we are obliged to deliver customers an applicable advertising space or to provide inducements to the customer. Consequently, we concluded that we were primarily responsible for fulfillment of the contract.

Following the full integration with RhythmOne and the acquisition of Unruly in 2020, we positioned our self as a stronger digital advertising platform in the marketplace with an integrated, end-to-end platform connecting the DSP and SSP sides of the business in a unified platform. As a result, we have changed its Programmatic business, tech stack, features, business models and activity as follows:

We further concluded that as a result of such change in its Programmatic activity (i) we do not have manual control over the process, (ii) we are not primarily responsible for fulfillment, (iii) we have no inventory risk and (iv) we obtain only momentary title to the advertising space offered via the end-to-end platform. As a consequence, beginning with the year ended December 31, 2020, we determined that we operate as agent with respect to our Programmatic activity and therefore beginning with the year ended December 31, 2020, we present Programmatic revenue on a net basis.

Our Performance activity has not changed and we are still the primary obligor to provide these services. As such, revenue is presented on a gross basis for our Performance activity. We are strategically focused on driving growth with our Programmatic activity through the end-to-end platform, while our Performance activities are declining over time.

Our results of operations for the years ended December 31, 2020 and 2019 are not directly comparable as a result of presenting revenue on a net basis for the Programmatic revenue for the year ended December 31, 2020. In order to improve comparability and provide a more meaningful basis for comparison of our financial results, we have included certain unaudited, as adjusted (non-IFRS) revenue information solely for the year ended

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December 31, 2019 that give effect to the revenue recognition changes noted above as if such changes were applied on January 1, 2019. This as adjusted (non-IFRS) revenue information will not be provided for any period subsequent to the year ended December 31, 2019. The following table sets forth our results of operations for the years ended December 31, 2020 and 2019 on an as reported basis for 2020 and, to facilitate comparability, on an as reported and a comparable basis for 2019.

Components of Our Results of Operations

Revenue. Our revenue is generated from transactions where we provide a platform for the purchase and sale of digital adverting inventory. Our end-to-end platform is a comprehensive software suite that supports a wide range of media types (e.g., Video, display, etc.) and devices (e.g., mobile, CTVs, streaming devices, desktop, etc.), creating an efficient marketplace where advertisers (buyers) are able to purchase high quality advertising inventory from publishers (sellers) at scale.

We generate revenue through fees that we charge, based on customer type, to utilize our solutions and services and upon usage and delivery. Often, advertisers use our DSP solution to access our DMP for optimizing media buys from our SSP solution.

Effective January 1, 2020, we present revenue on a net basis for the Programmatic activity, which had been recognized on a gross basis historically, including for the year ended December 31, 2019. See “—Critical Accounting Policies, Judgments and Estimates—Revenue Recognition” for information regarding the revenue recognition presentation change. Our Performance revenue is recognized on a gross basis for the years ended December 31, 2020 and 2019.

Cost of revenues (exclusive of depreciation and amortization). Cost of revenues (exclusive of depreciation and amortization) primarily consists of hosting fees and data costs for both Programmatic and Performance activities, as well as media costs for Performance activities that are directly attributable to revenue generated by the Company and based on the revenue share arrangements with audience and content partners. Our cost of revenues (exclusive of depreciation and amortization) for the years ended December 31, 2020 and 2019 are not

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directly comparable as a result of the revenue recognition presentation change. Effective January 1, 2020, we no longer include the costs of acquiring publishers’ advertising space that is purchased by advertisers via our Programmatic end-to-end solution in our cost of revenue, which is consistent with our change in revenue recognition. See “—Critical Accounting Policies, Judgments and Estimates—Revenue Recognition” for information regarding the revenue recognition presentation change.

Research and development expenses. Research and development expenses consist primarily of compensation and related costs for personnel responsible for the research and development of new and existing products and services. Where required, development expenditures are capitalized in accordance with the Company’s standard internal capitalized development policy in accordance with IAS 38. All research costs are expensed when incurred.

Selling and marketing expenses. Selling and marketing expenses primarily consist of compensation and related costs for personnel engaged in customer service, sales and sales support functions, as well as advertising and promotional expenditures.

General and administrative expenses. General and administrative expenses primarily consist of compensation and related costs for personnel and include costs related to the Company’s facilities, finance, human resources, information technology, legal organizations and fees for professional services. Professional services are principally comprised of external legal, information technology consulting and outsourcing services that are not directly related to other operational expenses.

Depreciation and amortization. Depreciation and amortization primarily consist of depreciation of fixed assets and amortization of intangible assets, as well as depreciation and amortization of right of use assets and provision for impairment.

Financing income. Financing income primarily consists of foreign currency gains and interest income.

Financing expense. Financing expense primarily includes exchange rate differences, interest and bank fees and other expenses.

Other income (expense). Other income (expense) includes gain on sale of business unit offset by a settlement agreement.

Taxation. Taxation consists primarily of income taxes related to the jurisdictions in which we conduct business. Our effective tax rate is affected by non-deductible expenses net of tax exempt income, utilization of tax losses from prior years for which deferred taxes is recognized, effect on deferred taxes at a rate different from the primary tax rate, effect of reduced tax rate on preferred income and differences in previous tax assessments. As of December 31, 2020, we do not have tax loss carry forwards for Israeli tax purposes.

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Results of Operations

The following tables set forth our results of operations in U.S. dollars and as a percentage of revenue for the periods indicated:

Three months ended March 31, 2021 compared to three months ended March 31, 2020

Revenue

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