144 0001373110 XXXXXXXX LIVE 0001661460 POSEIDA THERAPEUTICS INC 001-39376 9390 Towne Centre Drive Suite 200 San Diego CA 92121 8587793100 MARK GERGEN Director Officer Common Morgan Stanley Smith Barney LLC Executive Financial Services

1 New York Plaza 8th Floor New York NY 10004

120000 343200.00 97465024 11/26/2024 NASDAQ Common 11/26/2024 Exercise of Stock Options Issuer N 120000 11/26/2024 Cash Y The securities to be sold were and will be received upon the exercise of stock options over the next three months. The dates of acquisition and payment were and will be the dates of exercise/sale. 11/26/2024 06/21/2024 /s/ Mark Gergen