Northstar Neuroscience, Inc.

Q: Mar 31 2009

FY: Dec 31 2008

Q: Sep 30 2008

Q: Jun 30 2008

Q: Mar 31 2008

FY: Dec 31 2007

Q: Sep 30 2007

Q: Jun 30 2007

Q: Mar 31 2007

FY: Dec 31 2006

Q: Sep 30 2006

Q: Jun 30 2006

Q: Mar 31 2006

8.01

3.01,5.02,8.01,9.01

5.02,8.01

8.01

5.02,9.01

Termination of a Material Definitive Agreement

2.02

2.05

5.02,9.01

Other Events

5.02,9.01

2.02,9.01

8.01,9.01

5.02,8.01,9.01

2.02,2.05,5.02,8.01,9.01

Regulation FD Disclosure

1.01,5.03,9.01

2.02,9.01

2.02,9.01

7.01,9.01

No description available

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

Notice of Effectiveness

Post Effective Amendment to S-8

Post Effective Amendment to S-8

Post-effective amendment to a registration statement

Post Effective Amendment to S-8

Registration of Securities on Exchange

Registration statement under Securities Act of 1933 to be offered to employees pursuant to certain plans

Notice of Effectiveness

Registration statement under Securities Act of 1933

Registration statement under Securities Act of 1933 to be offered to employees pursuant to certain plans

Registration statement under Securities Act of 1933 to be offered to employees pursuant to certain plans

Prospectus Supplement with Pricing Information

No description available

Amended Initial Registration Statement

Amended Initial Registration Statement

Amended Initial Registration Statement

Free Writing Prospectus

No description available

No description available

No description available

No description available

Additional Information for Proxy Statement/ Votes

Additional proxy soliciting materials filed by a non-management party

No description available

Additional proxy soliciting materials filed by a non-management party

Additional proxy soliciting materials filed by a non-management party

Definitive Proxy Statement

Definitive Proxy Statement

HEDGEHOG CAPITAL LLC

Bowers John S Jr

WINSLOW CAROL D

MCNAMARA ROBERT E

LEVY ALAN J

RA CAPITAL MANAGEMENT, LLC

BARCLAYS PLC

Dow Brian B

Sheffield Deborah L.

ACCIPITER CAPITAL MANAGEMENT, LLC

D. E. Shaw Valence Portfolios, L.L.C.

BARCLAYS PLC

MAYFIELD X LP /DE

Dow Brian B

Dow Brian B

Bowers John S Jr

GANI MATTHEW

Sheffield Deborah L.

DIAMONDBACK CAPITAL MANAGEMENT, LLC

Dow Brian B

Notification of the removal from listing and registration of matured redeemed or retired securities

Correspondence with the SEC

Letter from the SEC

No description available

Letter from the SEC

Letter from the SEC

Letter from the SEC

Correspondence with the SEC

Letter from the SEC

Letter from the SEC

Correspondence with the SEC

Correspondence with the SEC

Letter from the SEC

Letter from the SEC

06

06