Attached files

file filename
10-Q/A - FORM 10-Q/A - LIGAND PHARMACEUTICALS INCd10qa.htm
EX-31.3 - CERTIFICATION BY PRINCIPAL EXECUTIVE OFFICER - LIGAND PHARMACEUTICALS INCdex313.htm
EX-10.23 - LICENSE AGREEMENT - LIGAND PHARMACEUTICALS INCdex1023.htm

Exhibit 31.4

CERTIFICATION OF PRINCIPAL FINANCIAL OFFICER

PURSUANT TO EXCHANGE ACT RULE 13a-14(a)/15d-14(a)

AS ADOPTED PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

I, John P. Sharp, certify that:

1. I have reviewed this Amendment No. 1 on Form 10-Q/A of Ligand Pharmaceuticals Incorporated; and

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report.

Date: August 23, 2011

 

/s/ John P. Sharp

   
John P. Sharp    
Vice President, Finance and Chief Financial Officer    
(Principal Financial Officer)