X0306 4 2022-06-16 0 0001661460 Poseida Therapeutics, Inc. PSTX 0001405692 Collins Cynthia C/O POSEIDA THERAPEUTICS, INC. 9390 TOWNE CENTRE DRIVE, SUITE 200 SAN DIEGO CA 92121 1 0 0 0 Common Stock 2022-06-16 4 A 0 19650 0.00 A 19650 D Stock Option (Right to Buy) 2.01 2022-06-16 4 A 0 28500 0.00 A 2032-06-15 Common Stock 28500 28500 D Represents restricted stock units granted pursuant to the Issuer's Equity Incentive Plan. The RSUs are scheduled to vest on the earlier to occur of (i) the one year anniversary of the date of grant and (ii) the day preceding the date of the next annual meeting of the Issuer's stockholders. The stock option will vest and become fully exercisable on the earlier to occur of (i) the one year anniversary of the date of grant and (ii) the day preceding the date of the next annual meeting of the Issuer's stockholders. /s/ Harry J. Leonhardt, Attorney-in-Fact 2022-06-16