Sotera Digital Security was founded in 2017 with a team of industry leading mobility security experts. Currently, Sotera is focused on the design and development of its secure phone, now being utilized by a range of organizations across a number of sectors. As Sotera grows and enhances its competencies, it will be driven by the pursuit of excellence, continuous innovation, ethics and integrity, and a commitment to our customers.


Vice Chairman, IBM
Co-Chairman, Cohn Robbins Holding Corp
Former Director, US Economic Council
Former President/COO Goldman Sachs
Member of the Board of Directors

Gary Cohn served as Director of the U.S. National Economic Council and chief economic advisor to the President from 2017-2018. He managed the administration’s global and domestic economic policy agenda, leading the successful effort to grow the U.S. economy through historic tax and regulatory reform. Prior to his White House service, Cohn was President and Chief Operating Officer of Goldman Sachs, where he worked for more than 25 years.


Founder, Shield Street Capital LLC
Member of the Board of Directors

Joshua Berkowitz has over 30 years of Global Macro investing experience. He is currently Founder and President of Shield Street Capital, a family office focused on Global Macro and alternative investments, and CEO of PlaySqor, a sports gaming company. Previously, Joshua founded Woodbine Capital Advisors, a Global Macro Hedge Fund that managed $3.5B, and served as the Chief Executive and Investment Officer. Joshua has held Global Macro Portfolio Manager positions at several prominent Hedge Funds and Investment Banks including Soros Fund Management, SAC Capital Advisors, Goldman Sachs and Caxton Associates.

Joshua graduated from George Washington University with a Bachelor of Science degree. He also holds an MBA from New York University Stern School of Business. Joshua is a Member of the Kennedy Center International Committee and is serving a six-year term on the Trilateral Commission. He is also a Board Member of the South African Institute for Race Relations and a member of the National Eagle Scout association.


Venture Capital Investor, Former Capital Markets Senior Managing Director and Proprietary Trader At Barclays, Nomura Securities and Bankers Trust, Member of the Board of Directors

Bill has over 30 years of experience in global capital markets and derivatives. With a background in sales and trading, he has also been actively involved in risk and controls, regulatory management, infrastructure, data management, IT and operations. Most recently, he ran FX Trading, Markets Structuring and Front Office Risk and Controls at Barclays. Prior to that, he co-ran Equity Proprietary Trading at Nomura Securities New York. Bill began his career at Bankers Trust, ultimately running Global Derivatives Sales and Trading for the bank across all asset classes and regions.

David Kay

CEO, Sotera Digital Security, Member of the Board of Directors

David Kay has 20 years of experience working with both Boards of Directors and management teams to manage strategic processes and drive growth for both public and private companies. Prior to Sotera, David was a founding partner at Tenor Capital Management Company leading private equity and serving in leadership roles for 40 companies in more than 17 countries.  He has held several Chairman and Board level positions.  

David graduated from University of Pennsylvania with a Bachelor of Arts in International Relations. He also graduated Cum Laude from Fordham University School of Law where he was selected for the Dean’s List and Urban Law Journal.

Manuel Varela

Vice President and General Counsel, Member of the Board of Directors

Manuel Varela is a lawyer with twenty-five years of experience focusing on international civil and criminal matters, typically involving legal actions in multiple countries. He regularly coordinated and directed multi-jurisdictional matters and investigations, supervising counsel in multiple jurisdictions by blending expertise in law, politics and media in order to guide companies as well as individuals through crises and scandals. Manuel’s clients were well-known individuals and multi-national companies in Latin America, Spain, England and Switzerland.