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BASIC AND DILUTED NET LOSS PER SHARE | 3 Months Ended
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Mar. 31, 2021
Earnings Per Share [Abstract] |
BASIC AND DILUTED NET LOSS PER SHARE | BASIC AND DILUTED NET LOSS PER SHARE Basic net loss per share attributable to Sangamo Therapeutics, Inc. stockholders has been computed by dividing net loss attributable to Sangamo Therapeutics, Inc. stockholders by the weighted-average number of shares of common stock outstanding during the period. Diluted net loss per share attributable to Sangamo Therapeutics, Inc. stockholders is calculated by dividing net loss attributable to Sangamo Therapeutics, Inc. stockholders by the weighted-average number of shares of common stock and potential dilutive securities outstanding during the period. The total number of shares subject to stock options and restricted stock units (“RSUs”) outstanding and the employee stock purchase plan (“ESPP”) shares reserved for issuance, which are all anti-dilutive, were excluded from consideration in the calculation of diluted net loss per share attributable to Sangamo Therapeutics, Inc. stockholders. Stock options and RSUs outstanding and ESPP shares reserved for issuance as of March 31, 2021 and 2020 totaled 17,614,376 and 14,849,728, respectively.

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