8-K

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

Current Report

Pursuant to Section 13 or 15(d) of the

Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): March 11, 2013

COWEN GROUP, INC.

(Exact Name of Registrant as Specified in Charter)

Delaware	001-34516	27-0423711
(State or Other Jurisdiction of Incorporation)	(Commission File Number)	(I.R.S. Employer Identification No.)

599 Lexington Avenue

New York, NY 10022

(Address of Principal Executive Offices and Zip Code)

Registrant’s telephone number, including area code: (212) 845-7900

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

oWritten communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

oSoliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

oPre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

oPre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Item 8.01.             Other Events.

On March 11, 2013, Cowen Group, Inc. (the “Company”) issued a press release announcing that the Company completed its previously announced acquisition of Dahlman Rose & Company, LLC, a privately-held investment bank specializing in the energy, metals and mining, transportation, chemicals and agriculture sectors.  Financial terms of the all-stock transaction were not disclosed.  A copy of the press release is attached hereto as Exhibit 99.1.

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Item 9.01. Financial Statements and Exhibits.

(d)Exhibit

99.1Press Release issued by the Company dated March 11, 2013

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SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

COWEN GROUP, INC.
Dated:  March 11, 2013	By:	/s/ Owen S. Littman
	Name:	Owen S. Littman
	Title:	General Counsel

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EX-99.1

Exhibit 99.1

Press Release

Cowen Group, Inc. Completes Acquisition of Dahlman Rose & Company, LLC

New York, March 11, 2013 - Cowen Group, Inc. (NASDAQ: COWN) (“Cowen” or “the Company”) today announced that it completed its previously announced acquisition of Dahlman Rose & Company, LLC (“Dahlman Rose”), a privately-held investment bank specializing in the energy, metals and mining, transportation, chemicals and agriculture sectors.  Financial terms of the all-stock transaction were not disclosed.

About Cowen Group, Inc.

Cowen Group, Inc. is a diversified financial services firm and, together with its consolidated subsidiaries, provides alternative investment, investment banking, research, and sales and trading services through its two business segments:  Ramius and its affiliates make up the Company’s alternative investment segment, while Cowen and Company and its affiliates make up the Company’s broker-dealer segment.  Its alternative investment products, solutions and services include hedge funds, replication products, managed futures funds, fund of funds, real estate and health care royalty funds.  Cowen and Company and its affiliates offer 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.
INVESTOR CONTACT:	Stephen Lasota
	Cowen Group, Inc.
	(212) 845-7919
MEDIA CONTACT:	Dan Gagnier/Carissa Ramirez
	Sard Verbinnen & Co
	(212) 687-8080

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