Board of Directors

Chris Stibbs
Non-Executive Chairperson
Chris Stibbs has served as a member of our board of directors since may 2019 and as our non- executive chairperson since September 2020.  Mr. Stibbs has over 25 years’ experience as an executive in the media industry, most recently, until August 2019, he was Chief Executive of The Economist Group. Previously, he held a number of roles within the group including head of the Economist Intelligence Unit (the group’s B2B arm) and CFO. He is credited with overseeing the group’s resilience and transition through the unprecedented disruption experienced by the publishing industry over the last 15 years. Prior to this, he held positions with Pearson and Incisive Media. Chris is a fellow of the Associations of Chartered Accountants and Corporate Treasurers, currently has a non-executive role at Oxford University Press and is Chair of Times Higher Education.
Ofer Druker
Chief Executive Officer / Executive Director
Ofer Druker has served as our Chief Executive Officer and as a member of our board of directors since April 2019 following the completion of the merger with RhythmOne. From November 2017 to April 2019, Mr. Druker served as our Executive Chairperson of the Tremor Video division and was instrumental in our successful integration of Tremor Video after its acquisition in August 2017. Mr. Druker was the founder and CEO of Matomy Media Group Ltd until April 2017, having built Matomy from its inception in 2007 into a digital media company with revenues of $276.6 million for the full year ended December 2016. Mr Druker was responsible for leading and integrating Matomy’s most important strategic transactions, including the acquisitions of Team Internet, Media Whiz, Mobfox and Optimatic.
Joanna Parnell
Non-Executive Director
Joanna Parnell has served as a member of our board of directors since 2014. Ms. Parnell is the Co-Founder of strategic marketing consultancy Project50, designing commercial growth strategies for C-suite business leaders in the UK and US. Previously, Joanna was Managing Partner at Wavemaker (formerly MEC), one of the world’s leading media agency networks and owned by WPP plc, where she led the paid digital and data team, overseeing the agency’s focus on data driven campaigns. Prior to moving to MEC in March 2016, Ms. Parnell was Director of Strategy and sat on the management team at Unique Digital (now a WPP company), with responsibility for setting product and business strategy, including leading the multichannel planning strategy (cross-device and cross-platform), managing product heads and driving key initiatives across data buying, attribution modelling and biddable media adaptation. Ms. Parnell has a Masters in German and Business from the University of Edinburgh and studied as a postgraduate student at the London School of Marketing between 2005 and 2006.
Sagi Niri
Chief Financial Officer / Executive Director
Sagi Niri has served as our Chief Financial Officer since March 2020 and as a member of our board of directors since June 2020. Mr. Niri has over 20 years’ experience in finance and leadership roles in the technology and real estate sectors. Sagi previously served as Chief Executive Officer of Labs Ltd, the office-as-a-service company, and Chief Financial Officer of LabTech Investments Ltd, Labs’ parent company, which owns and manages office, retail and residential real estate in London. In addition, Sagi spent over nine years at London Stock Exchange-listed Matomy Media Group Ltd, the data-driven advertising company, initially as Chief Operating Officer/Chief Financial Officer and more recently as Chief Executive Officer. Sagi is a member of the Institute of Certified Public Accountants in Israel and holds an MBA in Finance from Manchester University and a BA in Corporate Finance from the College of Management in Israel.
Yaniv Carmi
Chief Operating Officer / Executive Director

Yaniv Carmi has served as our Chief Operating Officer since March 2020 and as a member of our board of directors since 2014. Mr. Carmi joined the company in 2010, becoming Chief Financial Officer in January 2011, a position he held for nine years. In March 2020, Yaniv was appointed Chief Operating Officer in an expansion of the company’s senior management team. He is currently responsible for the delivery of Tremor’s business plan and driving the company’s international growth ambitions. Yaniv was instrumental in Tremor’s IPO in 2014 and in the subsequent global expansion in operations, including significant M&A activity. He is an experienced finance professional, whose previous roles include tax and audit senior at KPMG, Israel. Yaniv is also a Certified Public Accountant and holds a B.A. degree in Economics and Accounting from Ben-Gurion University and an MBA in Financial Management from Tel Aviv University.

Neil Jones
Senior Non-Executive Director

Neil Jones has served as a member of our board of directors since 2014.  Mr. Jones is currently Chief Operating Officer and a director of Huntsworth plc, the healthcare communications and public relations group, which is listed on the Main Market of the London Stock Exchange. Prior to which, Neil held the position of Chief Financial Officer at Huntsworth between February 2016 to October 2019. He joined Huntsworth from ITE Group plc, the international exhibitions group, where he held the position of Chief Financial Officer from 2008. Between 2003 and 2008, Mr. Jones was Group Finance Director at Tarsus Group plc and prior to that, he spent five years as Finance Director (Europe) at Advanstar Communications. Mr. Jones has a BA degree in Economics from the University of Manchester and completed the ACA in July 1990 with Price Waterhouse.

Rebekah Brooks
Non-Executive Director

Rebekah Brooks has served as a member of our board of directors since June 2020. Ms. Brooks is Chief Executive of British newspaper publisher News UK, part of News Corp, a position she has held since 2015, having first joined News Corp in 1989. Starting as a feature writer for the News of the World, Rebekah became Editor of the Sun in 2003, a position she held until July 2009. From 2009 to 2011, she served as Chief Executive of News International, overseeing a period of significant growth in newspaper operating profit and paid-for digital subscriptions at The Times. Following her appointment as Chief Executive of News UK, Ms. Brooks restructured the Sun’s online strategy, driving significant audience growth. In 2016, she also oversaw the strategic acquisition of Wireless, the owner of national radio brands talkSPORT, talkRADIO and Virgin Radio. Ms. Brooks is a Director of News Group Newspapers and Times Newspapers, and a Non-Executive Director of PA Group, the parent company of the Press Association (PA).

Norm Johnston
Non-Executive Director

Norm Johnston has served as a member of our board of directors since June 2020.Mr. Johnston is a veteran employee of News Corp. Until recently he was the CEO of Unruly Group, the digital advertising business acquired by Tremor in January 2020, a position he has held since April 2018. Mr. Johnston has been involved in digital marketing since its inception, having joined the marketing industry’s first digital agency, Modem Media in 1995. In 1997, Mr. Johnston launched Modem Media UK, one of Britain’s first and most successful digital agencies. After Modem was acquired by Publicis in 2007, Norm joined WPP and GroupM’s Mindshare, where he held a number of senior roles between 2007 and 2018, including Global Chief Digital Officer and Global CEO of its FAST business unit, a team of over 2,000 specialists in 115 cities working for global clients such as Unilever, Nestle, and American Express. Mr. Johnston holds a BA in Economics and Political Science from Northwestern University and an MBA in Marketing from Duke University’s Fuqua School of Business.

Lisa Klinger
Non-Executive Director

Lisa Klinger has served as a member of our board of directors since April 2021. Ms. Klinger has nearly 30 years’ experience in international finance. Most recently, Ms Klinger was Chief Financial Officer at Ideal Image Development Corp, one of the largest cosmetic and aesthetic services providers in the US, between 2018 and 2019, and prior to that she held the role of Chief Financial and Administrative Officer between 2016 and 2017 at Peloton Interactive Inc, the American exercise equipment and media company. Ms Klinger has also held senior finance roles at the Fresh Market Inc, where she was Executive and Vice President, Chief Financial Officer for three years, as well as at Michaels Stores Inc, where she was Senior Vice President, Finance and Treasurer for four years, and Acting Chief Financial Officer. Ms Klinger is currently Corporate Board Member and Audit Committee Chair at Emerald Holding Inc, a leading operator of B2B trade shows in the US, and a Corporate Board Member at PartyCity HoldCo Inc (NYSE:PRTY), a party goods retailer in North America. She holds a B.S.B.A. in Finance from Bowling Green State University.


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