X0306 4 2021-03-18 0 0001789769 Instil Bio, Inc. TIL 0001851347 Chiruvolu Vijay C/O INSTIL BIO, INC. 3963 MAPLE AVENUE, SUITE 350 DALLAS TX 75219 0 1 0 0 Chief Technical Officer Employee Stock Option (right to buy) 5.95 2021-03-18 4 A 0 240000 0.00 A 2031-02-09 Common Stock 240000 240000 D The option vests in forty-eight (48) equal monthly installments commencing on March 19, 2021, subject to the Reporting Person continuing to provide service through each such date. /s/ Madison Jones, Attorney-in-Fact 2021-03-22