EX-32.1 10 dna-ex32_1.htm CERTIFICATIONS OF CHIEF EXECUTIVE OFFICER AND CHIEF FINANCIAL OFFICER PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 Certifications of Chief Executive Officer and Chief Financial Officer pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002

EXHIBIT 32.1


CERTIFICATIONS OF
CHIEF EXECUTIVE OFFICER AND CHIEF FINANCIAL OFFICER
PURSUANT TO 18 U.S.C. SECTION 1350,
AS ADOPTED PURSUANT TO
SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

I, Arthur D. Levinson, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that the Annual Report of Genentech, Inc. on Form 10-K for the year ended December 31, 2006 fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934 and that information contained in such Annual Report of Genentech, Inc. on Form 10-K fairly presents in all material respects the financial condition and results of operations of Genentech, Inc.


 
By:
/s/ ARTHUR D. LEVINSON
  
 
Name:
Title:
Date:
Arthur D. Levinson, Ph.D.
Chief Executive Officer
February 23, 2007
  


I, David A. Ebersman, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that the Annual Report of Genentech, Inc. on Form 10-K for the year ended December 31, 2006 fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934 and that information contained in such Annual Report of Genentech, Inc. on Form 10-K fairly presents in all material respects the financial condition and results of operations of Genentech, Inc.


 
By:
/s/ DAVID A. EBERSMAN
  
 
Name:
Title:
 
Date:
David A. Ebersman
Executive Vice President and
   Chief Financial Officer
February 23, 2007