FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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(Print or Type Responses)

1. Name and Address of Reporting Person * MADERO MIGUEL   2. Issuer Name and Ticker or Trading Symbol FIBROGEN INC [FGEN] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) __X__ Director _____ 10% Owner _____ Officer (give title below) _____ Other (specify below) (Last) (First) (Middle) C/O FIBROGEN, INC., 409 ILLINOIS ST. 3. Date of Earliest Transaction (Month/Day/Year) 12/08/2015 (Street) SAN FRANCISCO, CA 94158 4. If Amendment, Date Original Filed(Month/Day/Year) 6. Individual or Joint/Group Filing(Check Applicable Line) _X_ Form filed by One Reporting Person ___ Form filed by More than One Reporting Person (City) (State) (Zip) Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned

1.Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Common Stock 12/08/2015   M   6,000 A $ 5.95 18,000 D   Common Stock 12/08/2015   M   12,000 A $ 2.35 30,000 D   Common Stock 12/08/2015   M   12,000 A $ 3.6 42,000 D   Common Stock 12/08/2015   M   12,000 A $ 18 54,000 D   Common Stock 12/08/2015   M   12,000 A $ 3.5 66,000 D   Common Stock 12/08/2015   M   12,000 A $ 9.775 78,000 D   Common Stock 12/08/2015   M   6,000 A $ 18.34 84,000 D   Common Stock 12/08/2015   M   12,000 A $ 2.9 96,000 D   Common Stock 12/08/2015   S   40,386 (1) D $ 30.49 (2) 55,614 D   Common Stock               369,632 I See footnote (3)

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)

1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Underlying Securities (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Stock Option (Right to Buy)	$ 5.95	12/08/2015		M			6,000	(4)	06/27/2022	Common Stock	6,000	$ 0	0	D
Stock Option (Right to Buy)	$ 2.35	12/08/2015		M			12,000	(4)	03/12/2018	Common Stock	12,000	$ 0	0	D
Stock Option (Right to Buy)	$ 3.6	12/08/2015		M			12,000	(4)	03/11/2019	Common Stock	12,000	$ 0	0	D
Stock Option (Right to Buy)	$ 18	12/08/2015		M			12,000	(4)	11/13/2014	Common Stock	12,000	$ 0	0	D
Stock Option (Right to Buy)	$ 3.5	12/08/2015		M			12,000	(4)	03/15/2021	Common Stock	12,000	$ 0	0	D
Stock Option (Right to Buy)	$ 9.775	12/08/2015		M			12,000	(4)	04/17/2023	Common Stock	12,000	$ 0	0	D
Stock Option (Right to Buy)	$ 18.34	12/08/2015		M			6,000	(5)	06/03/2025	Common Stock	6,000	$ 0	6,000	D
Stock Option (Right to Buy)	$ 2.9	12/08/2015		M			12,000	(4)	06/09/2020	Common Stock	12,000	$ 0	0	D

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
MADERO MIGUEL C/O FIBROGEN, INC. 409 ILLINOIS ST. SAN FRANCISCO, CA 94158	X

Signatures

/s/ Dorothy Pacini, Attorney-in-fact		12/10/2015
**Signature of Reporting Person		Date

Explanation of Responses:

*	If the form is filed by more than one reporting person, see Instruction 4(b)(v).
**	Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1)	The shares were sold by the reporting person to cover the exercise price and the taxes realized upon the exercise of such options.
(2)	The shares were sold at prices ranging from $30.35 to $30.60. 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.
(3)	The shares are held in accounts for the benefit of family members of the reporting person. The reporting person maintains voting and dispositive power over the shares held in such accounts.
(4)	Fully vested.
(5)	The shares subject to the option vest and become exercisable quarterly over one year measured from June 3, 2015.

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