Mr. Thomas S. Gimbel is an Executive Managing Director at Optima Asset Management LLC and an Independent Director at PrimeEnergy Resources Corp.

He is on the Board of Directors at PrimeEnergy Resources Corp., Lighthouse Guild International, Inc. and The Jewish Guild for the Blind.

He is responsible for portfolio risk management at Optima, as well as new business development for the Middle East region.

Prior to joining Optima, he was with Credit Suisse Asset Management, where he was a Managing Director for Hedge Fund Investments in charge of originating hedge fund investments and structured fund-of-funds offerings. Mr. Gimbel was previously head of the Hedge Fund Department at DLJ and prior to that, he was Managing Director in Investment Banking at PaineWebber and Chairman of PaineWebber Futures Management Corporation. Earlier in his career, he was Vice President and Treasurer of Smith Barney’s real estate acquisition and syndication subsidiary, having begun his career in investment banking in 1978.

Mr. Gimbel has a B.A. in economics from Bowdoin College and an MBA in finance from Columbia Business School.