Derek B. Wittenberg

Mr. Wittenberg is a Managing Director and Co-Founder of Ion Partners LLC. He focuses on a variety of sectors of technology and telecom, particularly software, telecom services, and telecom equipment. Mr. Wittenberg is actively involved in both developing new business for the firm as well as executing transactions.

Mr. Wittenberg is experienced in IPOs, mergers & acquisitions, private placements, and restructuring advisory. Mr. Wittenberg’s expertise includes enterprise software, system software, voice and data service providers, and telecom infrastructure. He has completed transactions for emerging companies such as ReserveAmerica, Printcafe Software, Metro Xmit, Indigo, and Fiber Network Solutions as well as Fortune 500 clients such as Alltel, Computer Associates, US West (acquired by Qwest) and Air Touch Wireless (formerly PacTel Wireless, now part of Verizon Wireless).

Prior to co-founding Ion Partners, Mr. Wittenberg was a Senior Vice President in the Technology & Telecom Investment Banking Group of KeyBanc/McDonald Investments where he focused on software, IT services and telecom. Prior to joining KeyBanc/McDonald in 2000, he was a Principal at Technology Partners LLC, an investment bank providing investment banking services to e-commerce and software companies. Mr. Wittenberg began his investment banking career at Lehman Brothers in 1992, where he was an Associate in the telecom and technology groups.

Mr. Wittenberg earned his B.A. in Economics from Amherst College. Mr. Wittenberg graduated from the Yale School of Management with a Masters in Public and Private Management (M.P.P.M.), focusing on Finance and Strategy. He is an active member of the Evaluation Committee for the Yale SOM/Goldman Sachs Foundation Partnership for Non-Profit Ventures.


Darrow Associates is an award-winning investor relations and financial communications consultancy with team members located nationwide.


Darrow Associates is an award-winning investor relations and financial communications consultancy with team members located nationwide.