Board of Directors

John Boynton has been a non-executive director since 2000 and assumed the role of Chairman of the Board in 2016. He was a founding shareholder and has contributed to the Board in various capacities, including Chairman of the Nominating and Governance Committee, Chairman of the Compensation Committee, and Member of the Audit Committee. He is a member of the National Association of Corporate Directors.

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Beyond his involvement with Nebius, Boynton co-founded IT ventures such as CompTek and InfiNet Wireless. His expertise extends across diverse industries, where he has served as a founder, investor, and board member in numerous growth companies spanning technology, healthcare services, and real estate. He is an alumnus of Harvard University, graduating in 1988.

Elena Bunina is a university professor, Israel-based businesswoman and an accomplished mathematician with almost 70 research publications and with a particular focus on algebra and model theory. She currently serves as the Head of Science and Education for the Nebius Group. Dr. Bunina previously served as the Head of Academic and Educational Services across the Yandex Group, and well as the General Director and director of Human Resources at Yandex LLC, stepping down in April 2022. 

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Dr. Bunina holds a Doctor of Science degree, in addition to having a Ph.D in Mathematics, from the faculty of Mechanics and Mathematics at the Moscow State University, where she served as a professor for 12 years until 2022. She currently serves as a professor of Mathematics at Bar Ilan University, in Israel.

Esther Dyson was a non-executive director of Yandex from 2006 until her resignation in March 2022. Dyson is the founder of Wellville, a US-based 10-year non-profit project to demonstrate the value of investing in health, ending December 2024. She is an active investor in a variety of IT, health, logistics and space start-ups, and also sits on the boards of AvanleeCare, ProofPilot, SWVL (NASDAQ), and Pressreader (among others). She also sits on the boards of non-profits including Charity Navigator, ExpandED Schools and the Long Now Foundation. 

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She started her career as a fact-checker for Forbes Magazine, and then spent five years as a securities analyst on Wall Street. At New Court Securities, Dyson comprised the sell-side research department, and worked on the initial public offering of Federal Express, among others. At Oppenheimer & Co., she followed the nascent software and personal computer markets. From 1982 to 2004, as the owner of EDventure Holdings, she edited its newsletter Release 1.0 and ran its annual PC Forum conference. She was an early investor in Flickr and del.icio.us (sold to Yahoo!), Medstory and Powerset (sold to MicrosoftMeetup (sold to WeWork)), Geometric Intelligence and Jump (sold to Uber), and Square/Block and Omada Health, among others. She is the author of “Release 2.0: A design for living in the digital age” (1997). Dyson earned a BA in economics from Harvard University, and a certificate of completion from the Yuri Gagarin Cosmonaut Training Institute.

Ophir Nave was appointed Chief Operating Officer of the Company in May 2024. Previously, Dr. Nave was a Lead Partner in the Corporate and M&A Practice at the Israeli firm Arnon, Tadmor-Levy, where he also served on the firm’s executive committee. His legal career includes positions at the US law firm Wachtell, Lipton, Rosen & Katz, clerking for Justice Theodor Or of the Israeli Supreme Court, and lecturing on corporate finance at Tel Aviv University. 

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Dr. Nave holds a Doctor of Juridical Science from Harvard Law School, an LL.B. from Tel Aviv University, and a B.Sc. in Computer Engineering from the Technion.

Kira Radinsky is the chief executive officer and chairwoman of Diagnostic Robotics, a US-based technology business working in the field of AI to make healthcare better, cheaper and more widely available. As a result of Dr. Radinsky’s technology expertise, she founded Mana Bio, an AI-based drug delivery business, and co-founded San Francisco based SalesPredict in 2012, where she led the research and development aspects of data mining. When SalesPredict was sold to eBay in 2016, Dr. Radinsky became eBay’s director of data science and chief scientist. Dr. Radinsky has also served on the board of directors for Esh Digital Bank (Tel Aviv), Maccabi Health Care Data Science Institute (Tel Aviv) and HSBC Technology Board (London). Aside from her corporate roles, Dr. Radinsky focuses her research on how web dynamics and knowledge can help predict future global events. 

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Dr. Radinsky has a B.Sc. and a Ph.D in Computer Science from Technion, the Israel Institute of Technology.

Rogier Rijnja has served as a non-executive director since 2013. With a background in management consulting and executive coaching, Rijnja brings valuable expertise to the Board. Previously, he held the position of Senior Vice President of Human Resources and was a member of the executive committee at D.E Master Blenders, a Dutch public company listed on the Amsterdam stock exchange.

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Rijnja's extensive experience in human resources includes leadership roles at various international companies. He served as the head of human resources departments at Maxeda (2008 – 2011), Numico N.V. (2004 – 2008), and Amazon (2002 – 2004). Prior to this, he held the position of director of global management development at Reckitt Benckiser PLC (1998 – 2002), and worked as a human resources manager for Nike Europe (1996 – 1998). During the early years of his career, between 1989 and 1996, Rijnja held multiple positions at Apple in the Netherlands and the US. He holds a degree in Law from Leiden University in the Netherlands.

Charles Ryan joined as a non-executive director in 2011. With nearly three decades of experience in global finance, Ryan co-founded United Financial Group (UFG) and served as its Chairman and CEO starting in 1994. During his tenure at UFG, he established the New Technology Group within UFG Asset Management, which facilitated early-stage technology investments in prominent IT ventures in the CIS region. Following Deutsche Bank's acquisition of UFG's investment banking business in 2006, Ryan was appointed chief country officer and CEO of Deutsche Bank Group in Russia and remained in that position until the end of 2008, when he became chairman of UFG Asset Management. From 2008 through the end of 2010, Ryan was a consultant for Deutsche Bank.

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Before co-founding UFG, Ryan held roles as an associate and principal banker at the European Bank for Reconstruction and Development in London (1991– 1994), and as a financial analyst at CS First Boston (1989 – 1991). He is also a founder and general partner of Almaz Capital Partners, an international venture capital firm based in Silicon Valley, which facilitates the global expansion of promising startups. Ryan holds a degree in Government from Harvard University.

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Ryan has been recognized by the Board of Directors as meeting the SEC criteria for an Audit Committee Financial Expert.

Arkady Volozh was the principal founder of Yandex and was an Executive Director and the group’s Chief Executive Officer between 2000 and 2022. A serial entrepreneur, Volozh’s background in computer science led to the inception of several successful IT enterprises, including InfiNet Wireless and CompTek International. Having served as CEO of CompTek International, Volozh moved to become the CEO of Yandex. 

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Volozh has invested in and served on the board of Face.com, an Israeli face-tagging company (sold to Facebook in 2012), and was an early investor in Getir, a Turkish based company and pioneer in the ‘quick commerce’ market, being the first to introduce the 15-minute grocery delivery model. Volozh has also served as a board member for US-based Neurosteer, the company responsible for developing the world’s first wearable, medical-grade brain activity interpretation platform used across a wide range of medical and lifestyle applications. Volozh holds a degree in applied mathematics from Gubkin Institute of Oil and Gas.