Cowen Holdings, Inc.

Q: Jun 30 2009

Q: Mar 31 2009

FY: Dec 31 2008

FY: Dec 31 2008

Q: Sep 30 2008

Q: Jun 30 2008

Q: Mar 31 2008

FY: Dec 31 2007

FY: Dec 31 2007

FY: Dec 31 2007

Q: Sep 30 2007

Q: Jun 30 2007

FY: Dec 31 2006

Q: Mar 31 2007

FY: Dec 31 2006

Q: Sep 30 2006

Q: Jun 30 2006

Completion of Acquisition or Disposition of Assets

5.02

Results of Operations and Financial Condition

1.01,5.02

1.01,9.01

8.01,9.01

Results of Operations and Financial Condition

2.02,9.01

Results of Operations and Financial Condition

Results of Operations and Financial Condition

5.02,9.01

2.02,9.01

5.02,9.01

Results of Operations and Financial Condition

Departure of Directors or Principal Officers; Election of Directors; Appointment of Principal Officers

Results of Operations and Financial Condition

Results of Operations and Financial Condition

5.02,8.01,9.01

2.02,9.01

5.02

Notice of Effectiveness

Post-effective amendment to a registration statement

Post-effective amendment to a registration statement

Post Effective Amendment to S-8

Post Effective Amendment to S-8

Notification of removal from listing and/or registration on a national securities exchange

Certification of termination of registration of a class of securities (Section 12(g))

Written communication about a business combination transaction (Rule 425)

Written communication about a business combination transaction (Rule 425)

Written communication about a business combination transaction (Rule 425)

Written communication about a business combination transaction (Rule 425)

Written communication about a business combination transaction (Rule 425)

Written communication about a business combination transaction (Rule 425)

Written communication about a business combination transaction (Rule 425)

Written communication about a business combination transaction (Rule 425)

Registration statement under Securities Act of 1933

Written communication about a business combination transaction (Rule 425)

Written communication about a business combination transaction (Rule 425)

Written communication about a business combination transaction (Rule 425)

Written communication about a business combination transaction (Rule 425)

No description available

No description available

No description available

No description available

Definitive Proxy Statement

Additional Information for Proxy Statement/ Votes

Definitive Proxy Statement

COWEN AND COMPANY, LLC

COWEN AND COMPANY, LLC

COWEN AND COMPANY, LLC

COWEN AND COMPANY, LLC

COWEN AND COMPANY, LLC

COWEN AND COMPANY, LLC

COWEN AND COMPANY, LLC

COWEN AND COMPANY, LLC

COWEN AND COMPANY, LLC

COWEN AND COMPANY, LLC

COWEN AND COMPANY, LLC

COWEN AND COMPANY, LLC

COWEN AND COMPANY, LLC

COWEN AND COMPANY, LLC

COWEN INC.

Cowen Holdings, Inc.

Cowen Holdings, Inc.

Cowen Holdings, Inc.

Cowen Holdings, Inc.

Cowen Holdings, Inc.

Annual Report Scanned (Paper)

Letter from the SEC

Letter from the SEC

Letter from the SEC

Letter from the SEC

Letter from the SEC

Correspondence with the SEC