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Team
Senior Bankers

Derek B. Wittenberg
Brooks A. Olbrys
Gardner F. MacDonald
Thomas C. Armstrong

Derek B. Wittenberg, Managing Director
(212) 286-5033
click here for email to derek@ion-partners.com
Mr. Wittenberg is a Managing Director and Co-Founder of Ion Partners. He advises growth companies, primarily in the technology and telecom industries. Mr. Wittenberg is actively involved in both developing new business for the firm as well as executing transactions.

Mr. Wittenberg is experienced in mergers & acquisitions, private placements, IPOs, and restructuring advisory. Mr. Wittenberg’s expertise includes software, telecom, and Internet/digital media. He has completed transactions for emerging companies such as ReserveAmerica, Aramova, Printcafe Software, Metro Xmit, Indigo, and BookFinder.com as well as Fortune 500 clients such as Alltel, Computer Associates, US West (acquired by Qwest), and Pacific Telesis.

Prior to co-founding Ion Partners, Mr. Wittenberg was a Senior Vice President in the Technology & Telecom Investment Banking Group of KeyBanc Capital Markets. Prior to joining KeyBanc Capital Markets in 2000, he was a Principal at Mediatech Capital Partners LLC, an investment bank providing investment banking services to digital media 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 has served on the Evaluation Committee for the Yale SOM/Goldman Sachs Foundation Partnership for Non-Profit Ventures.
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Brooks A. Olbrys, Managing Director
(212) 286-5037
click here for email to brooks@ion-partners.com
Mr. Olbrys is a Managing Director of Ion Partners with extensive mergers & acquisitions and corporate finance experience. He has advised numerous public and private clients on the financial, strategic, and legal aspects of mergers, acquisitions, joint-ventures, and divestitures. Mr. Olbrys has worked on transactions in a wide range of industries with a focus on technology and communications companies, and his clients have included Jones Intercable, Metapath Software International (MSI), BookFinder.com, Vishay Intertechnology, EDI, Windward Capital, Charterhouse Group, Xerox, and Verizon. In addition, Mr. Olbrys has worked on public offerings and M&A transactions in Europe and Asia.

Prior to joining Ion Partners, Mr. Olbrys worked as an investment banker at Credit Suisse and at Donaldson, Lufkin & Jenrette (DLJ). Before joining DLJ, Mr. Olbrys was a corporate attorney in the M&A Group at Skadden, Arps, Slate, Meagher and Flom where he represented both public and private clients. Prior to graduate school, Mr. Olbrys worked as a business strategy consultant to Fortune 500 companies at Monitor Company.

Mr. Olbrys earned a B.A. in Economics with Distinction and an M.A. in International Policy Studies from Stanford University where he was a member of Phi Beta Kappa. In addition, Mr. Olbrys received an M.A. in Law and Diplomacy from the Fletcher School at Tufts University, where he was a Ford Foundation Fellow, as well as a J.D. from the Boalt Hall School of Law at the University of California, Berkeley where he was a member of the California Law Review.
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Gardner F. MacDonald, Managing Director
(917) 847-1730
click here for email to gardner@ion-partners.com
Mr. MacDonald is a Managing Director of Ion Partners. Mr. MacDonald has extensive experience in mergers & acquisitions and corporate finance including specialized structured financing transactions. He has advised numerous public and private clients on a wide range of financial matters representing over $7 billion in transaction value. His clients have included Cathay Pacific, Ford Motor Corporation, General Electric, Southern California Edison, Texaco, and Union Pacific. Mr. MacDonald is actively involved in both developing new business for the firm as well as executing transactions.

Prior to joining Ion Partners, Mr. MacDonald spent five years operating his own independent advisory firm where he specialized in mergers & acquisitions. Prior to that, he was a Senior Vice President at KeyBanc Capital Markets, where he focused on mergers and acquisitions. Mr. MacDonald was previously a banker at McManus & Miles, a boutique investment bank focused on the utility and transportation industries, as well as The Transportation Group (Paine Webber affiliate). He began his investment banking career in the mergers & acquisitions group at Morgan Stanley.

Mr. MacDonald earned a B.A. in Economics from Vassar College and an M.B.A. from the Darden School at the University of Virginia, where he was a Darden Scholar and Class of ’67 scholar.
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Thomas C. Armstrong, Managing Director
click here for email to tom@ion-partners.com
Mr. Armstrong is a Managing Director of Ion Partners and a corporate attorney at the law firm of Berliner Cohen www.berliner.com. Mr. Armstrong has been in practice for over 28 years with an emphasis on representing companies and investors in venture capital financings, private placements, mergers and acquisitions, joint ventures, strategic alliances, and general corporate matters. His practice includes representation of companies and investors in various industries including software, information services, cleantech, telecom, Internet, medical devices, consumer goods and entertainment.

Mr. Armstrong has spoken extensively on representation and financing of growing technology companies.

Mr. Armstrong earned a BA from Pomona College and a JD from the University of California, Hastings College of the Law.
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