X0508 4 2026-01-21 0 0001737287 Allogene Therapeutics, Inc. ALLO 0001851044 Roberts Zachary 210 EAST GRAND AVE SOUTH SAN FRANCISCO CA 94080 0 1 0 0 EVP of R&D 0 Common Stock 2026-01-21 4 S 0 26269 1.56 D 616866 D Represents the number of shares sold by the reporting person to cover tax withholding obligations in connection with the vesting of restricted stock units. This sale is mandated by the Issuer's election under its equity incentive plan to require the satisfaction of tax withholding obligations to be funded by a "sell to cover" transaction and does not represent a discretionary trade by the reporting person. /s/Earl Douglas, Attorney-in-Fact 2026-01-23