| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| Macrae Sandy | PRESIDENT, CEO AND DIRECTOR, Director | C/O SANGAMO THERAPEUTICS, INC., 501 CANAL BLVD., RICHMOND | /s/ Scott Willoughby, Attorney-in-Fact | 26 Feb 2026 | 0001675687 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | SGMO | Common Stock | Tax liability | $2,500 | -5,291 | -0.27% | $0.4725 | 1,941,293 | 24 Feb 2026 | Direct | F1, F2 |
| transaction | SGMO | Common Stock | Tax liability | $15,809 | -33,637 | -1.7% | $0.4700 | 1,907,656 | 25 Feb 2026 | Direct | F3, F4 |
| Id | Content |
|---|---|
| F1 | Represents shares underlying the portion of a restricted stock unit ("RSU") grant that vested on February 24, 2026, which were surrendered by the Reporting Person solely for mandatory tax withholding purposes using the Issuer's closing stock price on February 24, 2026 of $0.4725/share, pursuant to the terms of the Issuer's Amended and Restated 2018 Equity Incentive Plan, as amended (the "2018 EIP"). This required tax withholding transaction is deemed to constitute a disposition of these shares to the Issuer for reporting purposes and does not represent a discretionary trade by the Reporting Person in the open market or otherwise. |
| F2 | Includes: (a) 9,456 shares from the February 24, 2026 vesting installment of the Reporting Person's February 24, 2023 RSU grant and (b) 375,000 shares subject to Reporting Person's February 25, 2025 RSU grant that will vest as to one-fourth (1/4) of the shares on February 25, 2026, and the remainder of the shares will vest in 8 successive equal quarterly installments thereafter. The vesting of all such RSU grants is subject to the Reporting Person's Continuous Service (as defined in the 2018 EIP) through each such date and subject to acceleration as provided in the 2018 EIP. |
| F3 | Represents shares underlying the portion of an RSU grant that vested on February 25, 2026, which were surrendered by the Reporting Person solely for mandatory tax withholding purposes using the Issuer's closing stock price on February 25, 2026 of $0.47/share, pursuant to the terms of the 2018 EIP. This required tax withholding transaction is deemed to constitute a disposition of these shares to the Issuer for reporting purposes and does not represent a discretionary trade by the Reporting Person in the open market or otherwise. |
| F4 | Includes: 60,113 shares from the February 25, 2026 vesting installment of the Reporting Person's February 25, 2025 RSU grant and the remaining 281,250 shares will vest in 8 successive equal quarterly installments thereafter. The vesting of all such RSU grants is subject to the Reporting Person's Continuous Service (as defined in the 2018 EIP) through each such date and subject to acceleration as provided in the 2018 EIP. |