Exhibit 31.3
CERTIFICATION OF CHIEF EXECUTIVE OFFICER
UNDER
SECTION 302 OF THE SARBANES-OXLEY ACT
I, Raymond E. Dellerba, certify that:
| 1. | I have reviewed this Amendment No. 1 to the Annual Report on Form 10-K of Pacific Mercantile Bancorp for the fiscal year ended December 31, 2011; and |
| 2. | Based on my knowledge, this amendment 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 amendment. |
Date: August 8, 2012
| /S/ RAYMOND E. DELLERBA |
Raymond E. Dellerba President and Chief Executive Officer |
