Thane Wettig - 06 Jun 2025 Form 4 Insider Report for FIBROGEN INC (FGEN)

Role: CEO, Director
Signature: /s/ Michael Hom, Attorney-in-Fact
Issuer symbol: FGEN
Transactions as of: 06 Jun 2025
Net transactions value: -$4,928
Form type: 4
Filing time: 09 Sep 2025, 19:25:14 UTC
Previous filing: 25 Mar 2025
Next filing: 17 Nov 2025
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Wettig Thane	CEO, Director	C/O FIBROGEN, INC., 350 BAY STREET, SUITE 100, #6009, SAN FRANCISCO	/s/ Michael Hom, Attorney-in-Fact	09 Sep 2025	0001815638

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	FGEN	Common Stock	Tax liability	$1,927	-246	-1.1%	$7.83	21,487	06 Jun 2025	Direct	F1
transaction	FGEN	Common Stock	Tax liability	$3,001	-248	-1.2%	$12.10	21,239	06 Sep 2025	Direct	F1
holding	FGEN	Common Stock						40	06 Jun 2025	By spouse

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	Represents shares withheld by the issuer to satisfy a tax obligation realized by the reporting person upon the vesting of restricted stock units.

Remarks:

Share amount and share prices reflect a 1-for-25 reverse stock split effective on June 16, 2025.