Exhibit 31.3
CERTIFICATION OF PRINCIPAL EXECUTIVE OFFICER PURSUANT TO
RULES 13a-14(a) AND 15d-14(a) UNDER THE SECURITIES EXCHANGE ACT OF 1934,
AS ADOPTED PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002
I, Robert W. Ross, M.D., certify that:
| 1. | I have reviewed this Annual Report on Form 10-K/A of Surface Oncology, Inc.; 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: May 1, 2023 |
By: | /s/ Robert W. Ross, M.D. | ||||
| Robert W. Ross M.D. | ||||||
| Chief Executive Officer (Principal Executive Officer) |