Cowen Group, Inc.’s Chief Operating Officer and Head of Investment Bankingto Present at the Sandler O’Neill 2011 Global Exchange & Brokerage Conference

NEW YORK, Jun 02, 2011 (BUSINESS WIRE) —

Cowen Group, Inc. (“Cowen”) (NASDAQ: COWN) announced today that Jeffrey
Solomon, Chief Operating Officer and Head of Investment Banking, is
scheduled to present at the Sandler O’Neill 2011 Global Exchange and
Brokerage Conference at the St. Regis New York Hotel in New York City on
Thursday, June 9, 2011 at 11:00 a.m. Eastern Time.

A link to a webcast of the presentation and a downloadable slideshow
will be available shortly before the presentation begins on Cowen’s web
site at www.cowen.com.
In addition, a replay of the event will be available on Cowen’s web site
through July 8, 2011.

About Cowen Group, Inc.

Cowen Group, Inc. is a diversified financial services firm and, together
with its consolidated subsidiaries, provides alternative investment
management, investment banking, research, and sales and trading services
through its two business segments: Ramius and its affiliates makes up
the Company’s alternative investment management segment, while Cowen and
Company is its broker-dealer segment. Its alternative investment
management products, solutions and services include hedge funds,
replication products, managed futures funds, fund of funds, real estate,
health care royalty funds and cash management services. 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 world.

SOURCE: Cowen Group, Inc.

Cowen Group, Inc.
Peter Poillon, 646-562-1983
Head of Investor Relations/Corporate Communications