Board of Directors

Dennis Mathew serves as Chairman and Chief Executive Officer of Optimum. A telecommunications industry veteran, Mr. Mathew spent 17 years in senior corporate and operational leadership positions at Comcast, leading the company’s largest regions with a focus on all aspects of the residential and commercial businesses for the entire Comcast portfolio of products and services. He oversaw the organization’s strategic, financial, and operational performance in both the Freedom Region and Western New England Region, positioning these regions to become best-in-class for customer experience and employee engagement.

Prior to joining Comcast, he held positions focused on technology risk assessment with both PricewaterhouseCoopers and Andersen/Protiviti.

In addition, Mr. Mathew is a philanthropist and entrepreneur. He is the co-founder and chairman of Bloom India, a nonprofit organization whose mission is to provide high-quality education to the underprivileged throughout India. He is also the founder of ConnectEd, an organization with the goal of providing digital education to children in India, creating innovative learning tools to support those preparing for the future workforce, and has spent the last decade working with non-profit organizations focused on anti-human trafficking efforts.

Mr. Mathew currently serves on the boards of C-SPAN, The Paley Center for Media and the Partnership for New York City.

Mr. Mathew earned a Bachelor of Science in Economics with concentrations in Finance and Information Management from the Wharton School of Management.

Dexter Goei is a director of Optimum Communications and provides capital structure and operational advisory services to Optimum Communications. He has also served on the board of directors of Teads Holding Co. (f/k/a Outbrain Inc.) (NASDAQ: TEAD) since March 2025. He is also a director of P-180, a private entity and the controlling shareholder of Vince Holding Corp. (NYSE: VNCE), since April 2025. Mr. Goei served as Chief Executive Officer of Optimum Communications from 2016 until October 2022 and as Executive Chairman from October 2022 until March 2023. Mr. Goei was chairman of the boards of Optimum Communications and Altice Europe until June 2018 and a director of Altice Europe until October 2018. Mr. Goei first joined the Altice Group as Chief Executive Officer in 2009, helping to lead its development and growth from a French cable operator to a multinational telecom operator with fixed and mobile assets across six different territories serving both residential and enterprise clients. Prior to joining the Altice Group, Mr. Goei spent 15 years in investment banking first with JPMorgan and then Morgan Stanley in their Media & Communications Group in New York, Los Angeles and London. He was Co Head of Morgan Stanley’s European Media & Communications Group when he left to join Altice. Mr. Goei is a graduate of Georgetown University’s School of Foreign Service with cum laude honors.

Patrick Drahi is a director of Optimum Communications and previously served as its Chairman from 2018 to 2022. Mr. Drahi founded Altice Europe N.V. and its subsidiaries (the “Altice Group”) in 2002. Mr. Drahi is a graduate from the Ecole Polytechnique and Ecole Nationale Supérieure de Télécommunications and began his professional career with the Philips Group in 1988 where he was in charge of international marketing (UK, Ireland, Scandinavia, Asia) in satellite and cable TV (DTH, CATV, MMDS). In 1991, Mr. Drahi joined the US/Scandinavian group Kinnevik Millisat, where he was in charge of the development of private cable networks in Spain and France and was involved in the launch of commercial TV stations in Eastern Europe. In 1993, Mr. Drahi founded CMA, a consulting firm specialized in telecommunications and media, which was awarded a mandate from BCTV for the implementation of Beijing’s full-service cable network. In addition, Mr. Drahi founded two cable companies, Sud Câble Services (1994) and Médiaréseaux (1995), where he was involved in several network deployments and buyouts. When Médiaréseaux was taken over by United Pan-Europe Communications N.V. (“UPC”) at the end of 1999, Mr. Drahi advised UPC on its M&A activities until mid-2001.

Charles Stewart is the Chief Executive Officer of Sotheby's. Mr. Stewart served as Co-President and Chief Financial Officer of Optimum Communications from 2015 to 2019 and has served as a director of Optimum Communications since 2018. Mr. Stewart joined Optimum Communications after 21 years of corporate, finance and investment banking experience in the United States, Latin America and Europe. Mr. Stewart previously served as Chief Executive Officer of Itau BBA International plc from 2013 until 2015, where he oversaw Itau Unibanco’s wholesale banking activities in Europe, the United States and Asia. Prior to that, he spent nineteen years at Morgan Stanley as an investment banker in various roles, including nine years focusing on the U.S. cable, broadcast and publishing industries. Mr. Stewart also acted as Deputy Head of Investment Banking for EMEA and was a member of the global investment banking management committee at Morgan Stanley. Mr. Stewart is a graduate of Yale University.

Dennis Okhuijsen joined Optimum Communications as a director in 2017. Mr. Okhuijsen joined the Altice Group in September 2012 and served as its CFO until October 2018. He currently serves as a senior advisor to the Altice Group. Before joining the Altice Group, he was a Treasurer of Liberty Global plc from 2005 until 2012. From 1993 until 1996, he was a senior accountant at Arthur Andersen. Mr. Okhuijsen joined UPC in 1996 where he was responsible for accounting, treasury and investor relations up to 2005. His experience includes raising and maintaining non-investment grade capital across both the loan markets as well as the bond/equity capital market. In his previous capacities he was also responsible for financial risk management, treasury and operational financing. He holds a Master of Business Economics from the Erasmus University Rotterdam.

Susan Schnabel joined Optimum Communications as a director in 2021. Ms. Schnabel is a co-founder and has served as the Co-Managing Partner of aPriori Capital Partners since 2014. Prior to forming aPriori Capital, Ms. Schnabel worked at Credit Suisse from 2000 to 2014 where she served as Managing Director in the Asset Management Division and Co-Head of DLJ Merchant Banking. Ms. Schnabel currently serves on the boards of directors of Kayne Anderson BDC, Inc. (NYSE: KBDC) and KKR Private Equity Conglomerate LLC, and serves as audit committee chair for both companies. She served on the board of directors of ViewRay, Inc. from 2022 to 2023 and has significant other board experience with private and public companies. Ms. Schnabel also serves on the Cornell University Board of Trustees (Executive and Investment Committee and Co-Chair of the Research & Innovation Committee). Ms. Schnabel received a Bachelor of Science in Chemical Engineering from Cornell University and a Master of Business Administration from Harvard Business School.

Raymond Svider joined Optimum Communications as a director in 2017. Mr. Svider is the Chairman and a Partner of BC Partners and is Chairman of the Management Committee of BC Partners. He joined BC Partners in 1992 and is currently based in New York. Over the years, Mr. Svider has participated and led investments in a number of sectors, including TMT, healthcare, industrials, business services, consumer and retail. He is currently Non-Executive Chairman of PetSmart LLC and Chairman of the Boards of Chewy, Inc (NYSE “CHWY”) and Madison Logic Inc. He also serves on the Boards of Valtech SE and EAB Global, Inc. Mr. Svider previously served as Chairman of the Advisory Board of The Aenova Group, the Board of Keter Group Holding Sarl, a Director of Cyxtera Technologies, Inc., Appgate, Inc., Intelsat S.A. (NYSE “I”), Presidio, Inc., GardaWorld Corporation, GFL Environmental Inc. (NYSE “GFL”) and NAVEX Global Inc. Mr. Svider is also on the Board of the Polsky Center Private Equity Council at the University of Chicago, and is a Council Member on the Council of Chicago Booth and is on the Board of Trustees of the Nightingale-Bambord school. Mr. Svider received a Master of Business Administration from the University of Chicago and a Master of Science in Engineering from both Ecole Polytechnique and Ecole Nationale Superieure des Telecommunications in France.

Mark Mullen joined Optimum Communications as a director in 2017. He has also served as a director of Teads Holding Co. (f/k/a Outbrain Inc.) (NASDAQ: TEAD) since March 2025. Mr. Mullen is co-founder and Managing Director of Bonfire Ventures, founded in 2017. Mr. Mullen also founded Double M Partners in 2012 and has served as Managing Partner since that time. Both Bonfire and Double M are based in Los Angeles and manage venture-stage capital funds with approximately $1 billion under management. Mr. Mullen also founded Mull Capital in 2005, an evergreen fund that invests directly in startups and in other investment funds. All of the funds focus on investing in internet, media and technology with primary emphasis on business-to-business solutions, security and software. Prior to Double M Partners, Mr. Mullen served as COO of the City of Los Angeles (Economic Policy) and Senior Advisor to the then-Mayor Antonio Villaraigosa where he oversaw several of the City of Los Angeles’ assets, including the LA International Airport (LAX), LA Convention Center, the Planning and Building & Safety Departments, as well as the Office of Small Business Services. From 1993 until 2007, Mr. Mullen ran the international M&A and private equity group for Daniels & Associates, an investment bank focused on the cable TV and broadband industries. Mr. Mullen was a senior partner of Daniels when it was acquired by RBC Capital Markets in 2007 where he stayed until 2010 as Managing Director. Mr. Mullen earned his BSBA with cum laude honors from the University of Denver in 1986 and earned his Master of Business Administration in International Business from the Thunderbird School of Global Management in 1992.

David Drahi joined Optimum Communications as a director in 2019. Dr. Drahi is co-chief executive officer in charge of technology and new business of Altice Group activities in Europe and has held that position since April 2022. Dr. Drahi graduated from the University of Oxford with a D.Phil. in Atomic and Laser Physics, obtained his Master in Optics and Photonics from the Imperial College of London, and pursued his Bachelor of Physics at Ecole Polytechnique Fédérale in Lausanne, Switzerland. His research covered the fields of Quantum Optics and Quantum Cryptography. He previously worked at Cabovisao, previously owned by Altice Europe, and Icart, a subcontractor to Altice Europe.

Elizabeth Abrams joined Optimum as a director in October 2026. Ms. Abrams has served as the Founder and Managing Member of Spruce Brook Partners, an independent firm providing corporate governance services, since April 2023. Ms. Abrams served on the board of Cumulus Media from March 2026 until October 2026, served on the board of Luminar Technologies from November 2025 until April 2026, and has served on the board of Getty Images Holdings, Inc. since July 2026. Ms. Abrams also serves as a director and fiduciary for private companies and not-for-profit organizations. Ms. Abrams has spent her career in corporate finance, working with boards, investors, and management teams to develop strategies to navigate transformational change.

Ms. Abrams spent most of her career as an investment banker, most recently as a Senior Managing Director at Guggenheim Securities until 2021, and prior to that with Millstein & Co. and Miller Buckfire. Ms. Abrams also previously served as the chief financial officer of K Health Inc. from 2021 to 2022.

Ms. Abrams received a Bachelor of Science degree and a Bachelor of Applied Science degree from the University of Pennsylvania Management and Technology Program.

Daniel B. Silvers joined Optimum as a director in October 2026. Mr. Silvers is the Founder and has served as the managing member of Matthews Lane Capital Partners LLC, an investment firm, since 2015. Mr. Silvers has served on the Board of Managers of ModivCare Topco, LLC (previously ModivCare, Inc.), a technology-enabled healthcare services company, since April 2025, and previously served as Chairman of the Board.  Additionally, Mr. Silvers has served as Executive Chairman of Winventory, Inc., a tech-enabled event ticketing management partner, since January 2024. In January 2026, Mr. Silvers was appointed to the Board of Managers of UIC Holdings, LP (d/b/a Curia Global), a global CDMO, where he currently serves as an Independent Manager and as a member of the Office of the CEO. In March 2026, Mr. Silvers was appointed to the Board of Directors of Cornerstone Building Brands, Inc., a manufacturer of exterior building products. Mr. Silvers has also served on the Board of Directors of Civeo Corporation (NYSE: CVEO) since November 2025. Mr. Silvers previously served on the boards of directors of MRC Global, Inc. from 2024 to 2025 and Avid Technology, Inc. from 2018 to 2023. Mr. Silvers served as Executive Vice President and Chief Strategy Officer at Inspired Entertainment, Inc. (NASDAQ: INSE), a gaming technology company, from December 2016 to January 2023 and as Chief Executive Officer and a director of Leisure Acquisition Corp., a special purpose acquisition company, from September 2017 to June 2021. Previously, Mr. Silvers was the President of SpringOwl Asset Management LLC, an investment management firm, from 2009 to 2015 (including predecessor entities). Mr. Silvers was the President of Western Liberty Bancorp, an acquisition-oriented holding company, from 2009 to 2010. Mr. Silvers previously held positions at Fortress Investment Group LLC, a leading global alternative asset manager, and Bear, Stearns & Co. Inc., a global financial services firm.

Mr. Silvers holds a Bachelor of Science in Economics and a Master of Business Administration in Finance from The Wharton School of the University of Pennsylvania. Mr. Silvers also received a Corporate Governance certification through the Director Education & Certification Program at the UCLA Anderson School of Management.