Exhibit 31.4
PRINCIPAL FINANCIAL OFFICER CERTIFICATE
I, Kathy Y. Yi, certify that:
| 1. | I have reviewed this amendment no. 1 to the annual report on Form10-K of Sangamo Therapeutics, Inc. (the “registrant”); 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: April 24, 2018 |
| /s/ Kathy Y. Yi |
| Kathy Y. Yi |
| Executive Vice President and Chief Financial Officer |
| (Principal Financial and Accounting Officer) |
