Cowen Holdings, Inc.

Notice of Effectiveness

Post-effective amendment to a registration statement

Completion of Acquisition or Disposition of Assets

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)

No description available

No description available

No description available

No description available

5.02

General form for quarterly reports under Section 13 or 15(d)

Results of Operations and Financial Condition

Registration statement under Securities Act of 1933

1.01,5.02

Written communication about a business combination transaction (Rule 425)

1.01,9.01

Written communication about a business combination transaction (Rule 425)

Written communication about a business combination transaction (Rule 425)

8.01,9.01

Written communication about a business combination transaction (Rule 425)

General form for quarterly reports under Section 13 or 15(d)

Results of Operations and Financial Condition

Annual report pursuant to Section 13 or 15(d) (amendment)

Annual report pursuant to Section 13 or 15(d)

2.02,9.01

General form for quarterly reports under Section 13 or 15(d)

Results of Operations and Financial Condition

General form for quarterly reports under Section 13 or 15(d)

Results of Operations and Financial Condition

5.02,9.01

General form for quarterly reports under Section 13 or 15(d)

2.02,9.01

Annual Report Scanned (Paper)

Annual report pursuant to Section 13 or 15(d) (amendment)

Definitive Proxy Statement

Annual report pursuant to Section 13 or 15(d) (amendment)

Annual report pursuant to Section 13 or 15(d)

5.02,9.01

Results of Operations and Financial Condition

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

General form for quarterly reports under Section 13 or 15(d)

Results of Operations and Financial Condition

General form for quarterly reports under Section 13 or 15(d)

Results of Operations and Financial Condition

Annual report pursuant to Section 13 or 15(d) (amendment)

5.02,8.01,9.01

Additional Information for Proxy Statement/ Votes

General form for quarterly reports under Section 13 or 15(d)

2.02,9.01

Definitive Proxy Statement

5.02

Annual report pursuant to Section 13 or 15(d)

General form for quarterly reports under Section 13 or 15(d)

Letter from the SEC

Letter from the SEC

Letter from the SEC

Letter from the SEC

Letter from the SEC

General form for quarterly reports under Section 13 or 15(d)

Correspondence with the SEC

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.