Washington, D.C. 20549



Proxy Statement Pursuant to Section 14(a) of the

Securities Exchange Act of 1934

(Amendment No. )



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Preliminary Proxy Statement

Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2))

Definitive Proxy Statement

Definitive Additional Materials

Soliciting Material under §240.14a-12

FibroGen, Inc.

(Name of Registrant as Specified In Its Charter)

(Name of Person(s) Filing Proxy Statement, if other than the Registrant)

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Fee computed on table in exhibit required by Item 25(b) per Exchange Act Rules 14a-6(i)(1) and 0-11. 

Your Vote Counts! FIBROGEN, INC. 2023 Annual Meeting Vote by June 6, 2023 11:59 PM ET Fibrogen FIBROGEN, INC. 409 ILLINOIS STREET SAN FRANCISCO, CA 94158 V10777-P91487 You invested in FIBROGEN, INC. and it’s time to vote! You have the right to vote on proposals being presented at the Annual Meeting. This is an important notice regarding the availability of proxy material for the stockholder meeting to be held on June 7, 2023. Get informed before you vote View the Notice and Proxy Statement and Annual Report on Form 10-K online OR you can receive a free paper or email copy of the material(s) by requesting prior to May 24, 2023. If you would like to request a copy of the material(s) for this and/or future stockholder meetings, you may (1) visit, (2) call 1-800-579-1639 or (3) send an email to If sending an email, please include your control number (indicated below) in the subject line. Unless requested, you will not otherwise receive a paper or email copy For complete information and to vote, visit Control # Smartphone users Point your camera here and vote without entering a control number Vote Virtually at the Meeting* June 7, 2023 8:00 AM Pacific Daylight Time Virtually at:*Please check the meeting materials for any special requirements for meeting attendance v1.1. 

Vote at www.ProxyVote.comTHIS IS NOT A VOTABLE BALLOT This is an overview of the proposals being presented at the upcoming stockholder meeting. Please follow the instructions on the reverse side to vote these important matters. Voting Items Board Recommends 1. Election of Class III Directors to hold office until the 2026 Annual Meeting of Stockholders Nominees: 1a. Enrique Conterno 1b. Aoife Brennan, M.B., B.Ch. 1c. Gerald Lema 2. To approve, on an advisory basis, the compensation of FibroGen’s named executive officers, as disclosed in the proxy statement. 3. To ratify the selection of PricewaterhouseCoopers LLP by the Audit Committee of the Board of Directors as the independent registered public accounting firm of FibroGen for the year ending December 31, 2023. 4. To conduct any other business properly brought before the meeting. The shares represented by the proxy, when properly executed, will be voted in the manner directed therein by the undersigned stockholder(s). If no direction is made, the proxy will be voted FOR items 1, 2, and 3. If any other matters properly come before the meeting, or if cumulative voting is required, the persons named in the proxy will vote in their discretion. For For For For For Prefer to receive an email instead? While voting on, be sure to click “Delivery Settings” V10778-P91487.