X0306 4 2018-03-12 0 0000921299 FIBROGEN INC FGEN 0001016835 RIGGS RORY B C/O FIBROGEN, INC. 409 ILLINOIS ST. SAN FRANCISCO CA 94158 1 0 0 0 Common Stock 2018-03-12 4 S 0 19693 54.98 D 391602 D Common Stock 2018-03-13 4 S 0 5402 53.07 D 386200 D Common Stock 2018-03-13 4 S 0 4382 54.90 D 381818 D Common Stock 2018-03-13 4 S 0 2618 55.19 D 379200 D Common Stock 605713 I See footnote The shares were sold at prices ranging from $54.90 to $55.10. The reporting person will provide upon request to the SEC, the issuer or security holder of the issuer, full information regarding the number of shares sold at each separate price. The shares were sold at prices ranging from $53.00 to $53.15. The reporting person will provide upon request to the SEC, the issuer or security holder of the issuer, full information regarding the number of shares sold at each separate price. The shares were sold at prices ranging from $54.80 to $54.95. The reporting person will provide upon request to the SEC, the issuer or security holder of the issuer, full information regarding the number of shares sold at each separate price. The shares were sold at prices ranging from $55.00 to $55.85. The reporting person will provide upon request to the SEC, the issuer or security holder of the issuer, full information regarding the number of shares sold at each separate price Shares were held by New Ventures I, LLC. The reporting person is Managing Member of New Ventures I, LLC and has voting and investment control with respect to the shares held by New Ventures I, LLC. /s/ Dorothy Pacini, Attorney-in-fact 2018-03-14