X0306 4 2020-06-04 0 0000921299 FIBROGEN INC FGEN 0001778430 Blaug Suzanne C/O FIBROGEN, INC. 409 ILLINOIS ST. SAN FRANCISCO CA 94158 1 0 0 0 Common Stock 2020-06-04 4 A 0 4700 0.00 A 9348 D Stock Option (Right to Buy) 32.69 2020-06-04 4 A 0 7800 0.00 A 2030-06-03 Common Stock 7800 7800 D Represents the grant of restricted stock units that vest on the earlier of June 4, 2021 or the date of the next annual meeting of stockholders, subject to the reporting person's continuous service on the applicable vesting date. Options vest on the earlier of June 4, 2021 or the date of the next annual meeting of stockholders, subject to the reporting person's continuous service on the applicable vesting date. /s/ Dorothy Pacini, Attorney-in-fact 2020-06-08