Cowen Group Announces New Hire to Health Care Research Group

Charles Rhyee Named Managing Director and Senior Research Analyst

NEW YORK, Feb 07, 2011 (BUSINESS WIRE) —

Cowen Group, Inc. (“Cowen”) (NASDAQ: COWN) today announced that Charles
Rhyee has joined the firm as Managing Director and Senior Research
Analyst, where he will cover Health Care Information Technology (HCIT)
and Distribution in the Health Care sector of Cowen’s Research group.
Mr. Rhyee will be based in New York and will report to Barry Tarasoff,
Cowen’s Director of Research.

“We are pleased to welcome Charles to the firm,” commented Barry
Tarasoff. “His deep equity research background and extensive experience
in the healthcare distribution and IT sector makes him a great addition
to our team. We look forward to his contributions and the value-added
product we believe he can provide to Cowen clients.”

Mr. Rhyee joins Cowen and Company with over ten years of experience in
healthcare distribution and information technology, most recently
serving as a Senior Research Analyst for Healthcare Distribution &
Information Technology at Oppenheimer & Co. Prior to this, Mr. Rhyee was
an Equity Research Associate at Credit Suisse. He has also held
positions at Jefferies & Co., Schwab Soundview Capital Markets, and
Smith Barney. Mr. Rhyee received a B.A. in Economics from Columbia

About Cowen Group, Inc.

Cowen Group, Inc. is a leading diversified financial services firm
providing alternative investment management, investment banking,
research, and sales and trading services through its business units,
Ramius and Cowen and Company. Its alternative investment management
products include hedge funds, fund of funds, real estate funds,
healthcare royalty funds, cash management and commodity trading funds,
offered primarily under the Ramius name. Cowen and Company offers
industry focused investment banking for growth-oriented companies,
domain knowledge-driven research and a sales and trading platform for
institutional investors. Founded in 1918, the firm is headquartered in
New York and has offices located in major financial centers around the

SOURCE: Cowen Group, Inc.

Cowen Group, Inc.
Emma Simonich, 646-562-1154
Media Relations
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