DEF 14A

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 14A

Proxy Statement Pursuant to Section 14(a) of the

Securities Exchange Act of 1934

(Amendment No. )

Filed by the Registrant ☑

Filed by a Party other than the Registrant ☐

Check the appropriate box:

☐ 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)

Payment of Filing Fee (Check the appropriate box):

☑ No fee required.

☐ Fee paid previously with preliminary materials.

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

FIBROGEN, INC.

350 Bay Street

Suite 100 #6009

San Francisco, CA 94133

NOTICE OF ANNUAL MEETING OF STOCKHOLDERS

To Be Held On June 4, 2025

Dear Stockholder:

You are cordially invited to attend the 2025 Annual Meeting of Stockholders (the “Annual Meeting”) of FibroGen, Inc., a Delaware corporation (also referred to as “we,” “us,” “FibroGen,” and the “Company”). The Annual Meeting will be held via live audio webcast on the internet. You will be able to attend the Annual Meeting online, vote your shares electronically, and submit your questions during the meeting by visiting www.virtualshareholdermeeting.com/FGEN2025.

The Annual Meeting will be held on Wednesday, June 4, 2025 at 8:00 a.m. Pacific Time for the following purposes:

To elect our Class II director nominee, Jeffrey L. Edwards, to our board of directors to hold office until the 2028 annual meeting of stockholders.

To approve a reverse stock split of the Company’s common stock, including granting our board of directors discretion to determine the final ratio and timing of the reverse stock split.

To approve, on an advisory basis, the compensation of the Company’s named executive officers.

To ratify the selection, by the Audit Committee of our board of directors, of PricewaterhouseCoopers LLP as the independent registered public accounting firm of the Company for the year ending December 31, 2025.

To conduct any other business properly brought before the meeting.

These items of business are more fully described in the proxy statement accompanying this notice.

The record date for the Annual Meeting is April 11, 2025 (the “Record Date”). Only stockholders of record at the close of business on that date may vote by proxy or at the Annual Meeting (live audio webcast) or any adjournment thereof. Please see the attached proxy statement for information on how to vote by proxy and how to attend and vote at the Annual Meeting.

A list of our record stockholders entitled to vote as of the close of business on the Record Date will be available for review for ten days prior to the Annual Meeting at the offices of our corporate counsel Cooley LLP, 3175 Hanover Street, Palo Alto, CA 94304, for any legally valid purpose related to the Annual Meeting, and will be available during the entire time of the Annual Meeting at www.virtualshareholdermeeting.com/FGEN2025.

Important Notice Regarding the Availability of Proxy Materials for the Annual Stockholders’ Meeting

The proxy statement and Annual Report on Form 10-K

are available at www.proxyvote.com.

By Order of the Board of Directors

     /s/ John Alden

    

     John Alden

    

     Corporate Secretary and General Counsel

    

San Francisco, California

April 25, 2025

Your vote is very important. Whether or not you expect to attend the Annual Meeting, please vote online or by telephone prior to the Annual Meeting as instructed in these materials, or if you requested and received a proxy by mail, please complete, date, sign, and return the proxy as promptly as possible in order to ensure your representation at the Annual Meeting. Even if you have voted by proxy, you may still vote online if you attend the Annual Meeting. Please review the section below “How do I vote?” for specific instructions on voting your shares before and during the Annual Meeting.

Table of Contents


Information Concerning Solicitation and Voting	1
Special Note Regarding Forward-Looking Statements	8
Proposal 1 – Election of Directors	9
Directors and Corporate Governance	11
Report of the Audit Committee of the Board of Directors	16
Proposal 2 – Reverse Stock Split	23
Proposal 3 – Advisory Vote on Named Executive Officer Compensation	30
Proposal 4 – Ratification of Selection of Independent Registered Public Accounting Firm	31
Executive Officers	32
Executive Compensation	33
Summary Compensation	34
Pay Versus Performance	45
Equity Compensation Plan Information	50
Security Ownership of Certain Beneficial Owners And Management	51
Delinquent Section 16(a) Reports	53
Transactions with Related Persons	54
Householding of Proxy Materials	55
Other Matters	56
Appendix A Form of Certificate of Amendment of the Amended and Restated Certificate of Incorporation of FibroGen, Inc.	57
Proxy Card

FIBROGEN, INC.

350 Bay Street

Suite 100 #6009

San Francisco, CA 94133

PROXY STATEMENT

FOR THE 2025 ANNUAL MEETING OF STOCKHOLDERS

June 4, 2025

INFORMATION CONCERNING SOLICITATION AND VOTING

The board of directors (the “Board”) of FibroGen is soliciting your proxy to vote at the Annual Meeting, including at any adjournments or postponements of the Annual Meeting. You are invited to attend the online Annual Meeting to vote on the proposals described in this proxy statement. However, you do not need to attend the Annual Meeting to vote your shares. Instead, please vote online or by telephone as instructed in these materials, or if you requested and received a proxy by mail, please complete, date, sign, and return the proxy as promptly as possible in order to ensure your representation at the Annual Meeting.

The proxy materials, including this proxy statement, proxy card or voting instruction card, and our Annual Report on Form 10-K for the fiscal year ended December 31, 2024, filed on March 17, 2025 (“Annual Report”), are being distributed and made available on or about April 25, 2025. This proxy statement contains important information for you to consider when deciding how to vote on the matters brought before the Annual Meeting. Please read it carefully.

In accordance with rules and regulations adopted by the United States (“U.S.”) Securities and Exchange Commission (the “SEC”), we have elected to provide our stockholders access to our proxy materials online. Accordingly, we intend to mail a Notice of Internet Availability of Proxy Materials (the “Notice”) on or about April 25, 2025 to stockholders of record entitled to vote at the Annual Meeting. Stockholders will have the ability to access the proxy materials at www.proxyvote.com, on the website referred to in the Notice, or request a printed set of the proxy materials be sent to them by following the instructions in the Notice.

The Notice will also provide instructions on how you can elect to receive future proxy materials electronically or in printed form by mail. If you choose to receive future proxy materials electronically, you will receive an email next year with instructions containing a link to the proxy materials and a link to the proxy-voting site. Your election to receive proxy materials electronically or in printed form by mail will remain in effect until you change such election.

Choosing to receive future proxy materials electronically will allow us to more rapidly provide you with the information you need, will conserve natural resources, and will reduce the costs of printing and mailing documents to you.

QUESTIONS AND ANSWERS ABOUT THESE PROXY MATERIALS AND VOTING

Why did I receive the Notice of Internet Availability of Proxy Materials instead of a full set of proxy materials?

Notices are sent to stockholders who have not yet made an election to receive proxy materials by mail or electronically. Instructions on how to access the full set of proxy materials online or to request a paper copy may be found in the Notice. In addition, you may request to receive future proxy materials in printed form by mail or electronically. Your election to receive future proxy materials by mail or electronically will remain in effect until you change such election.

Why did I receive a full set of proxy materials instead of a Notice of Internet Availability of Proxy Materials?

We are providing paper copies of the proxy materials to stockholders who have previously requested to receive them. If you would like to reduce the environmental impact of and the costs incurred by us in mailing proxy materials, you may elect to receive all future proxy materials electronically via email or access them online. To sign up for electronic delivery, please follow the instructions provided with your proxy materials and on your proxy card or voting instruction card and, when prompted, indicate that you agree to receive or access future stockholder communications electronically. Alternatively, you can go to www.proxyvote.com where you can access the proxy materials and enroll for online delivery of the proxy materials.

How do I attend the Annual Meeting?

You must be a stockholder of record or a beneficial holder of FibroGen shares of common stock at the close of business on April 11, 2025 to attend and vote at the Annual Meeting. The Annual Meeting will be held on Wednesday, June 4, 2025 at 8:00 a.m. Pacific Time via live audio webcast that can be accessed at www.virtualshareholdermeeting.com/FGEN2025.

You will not be able to attend the Annual Meeting in person. If you wish to attend and vote at the Annual Meeting online, you must have the 16-digit control number included on your Notice, your proxy card (that you may request or that was delivered to you) or the instructions that accompanied your proxy materials. Beneficial holders of FibroGen shares of common stock who do not receive a 16-digit control number from their bank or brokerage firm and who wish to attend the Annual Meeting should follow the instructions from their bank or brokerage firm, including any requirement to obtain a legal proxy. Most banks or brokerage firms allow a stockholder to obtain a legal proxy either online or by mail.

Online check-in will begin at 7:45 a.m. Pacific Time on June 4, 2025. We recommend allowing ample time for the online check-in process. Additional information on who can vote and how to vote at the Annual Meeting is discussed below.

How do I ask questions during the Annual Meeting?

Our Annual Meeting will be conducted online in a “virtual format” only (live audio webcast) and has been designed to allow stockholders to submit questions and comments pertaining to the meeting’s business before and during the Annual Meeting. You may submit questions when online check-in begins at 7:45 a.m. Pacific Time on June 4, 2025 and during the Annual Meeting at www.virtualshareholdermeeting.com/FGEN2025. Company directors and key executive officers are expected to be available to answer questions. We will attempt to respond to as many inquiries pertaining to business properly brought before the Annual Meeting as time allows.

What if during the check-in time or during the Annual Meeting I have technical difficulties or trouble accessing the online meeting website?

Technicians will be available to assist you with any technical difficulties you may have accessing the virtual website platform. If you encounter any difficulties accessing the virtual meeting platform during the check-in or meeting time, please call the number posted on www.virtualshareholdermeeting.com/FGEN2025.

If I cannot attend the Annual Meeting online, can I vote or listen to it later?

You may vote your shares electronically before the meeting by internet, by proxy or by telephone as described below. You do not need to access the Annual Meeting webcast to vote if you submitted your vote via proxy, by internet or by telephone in advance of the Annual Meeting. A recording of the Annual Meeting, including the questions answered during the meeting, will be available on our investor relations website at https://investor.fibrogen.com for 30-days following the Annual Meeting.

Will a list of record stockholders as of the Record Date be available?

A list of our record stockholders entitled to vote as of the close of business on the Record Date will be available for review for ten days prior to the Annual Meeting at the offices of our corporate counsel Cooley LLP, 3175 Hanover Street, Palo Alto, CA 94304, for any legally valid purpose related to the Annual Meeting, and will available during the entire time of the Annual Meeting, at www.virtualshareholdermeeting.com/FGEN2025.

Who can vote at the Annual Meeting?

Only stockholders of record at the close of business on April 11, 2025 will be entitled to vote at the Annual Meeting. On the Record Date, there were 101,043,970 shares of common stock outstanding and entitled to vote.

Stockholder of Record: Shares Registered in Your Name

If on April 11, 2025 your shares were registered directly in your name with FibroGen’s transfer agent, Equiniti Trust Company, LLC, then you are a stockholder of record. As a stockholder of record, you may vote before or during the Annual Meeting or vote by proxy. You will need your 16-digit control number included on your Notice, your proxy card (that you may request or that was delivered to you) or the instructions that accompanied your proxy materials in order to be able to vote during the Annual Meeting. Whether or not you plan to attend the Annual Meeting online, we urge you to fill out and return your proxy card or vote by proxy online or by telephone as instructed below to ensure your vote is counted.

Beneficial Owner: Shares Registered in the Name of a Broker or Bank

If on April 11, 2025 your shares were held, not in your name, but rather in an account at a brokerage firm, bank, dealer or other similar organization, then you are the beneficial owner of shares held in “street name” and these proxy materials are being forwarded to you by that organization. The organization holding your account is considered to be the stockholder of record for purposes of voting at the Annual Meeting. As a beneficial owner, you have the right to direct your broker or other agent regarding how to vote the shares in your account. You will receive instructions from the stockholder of record that you must follow for your shares to be voted. You are also invited to attend the Annual Meeting. You will need your 16-digit control number included on your voting instruction form in order to be able to vote during the Annual Meeting. Beneficial holders of FibroGen shares who do not receive a 16-digit control number from their bank or brokerage firm and who wish to vote at the Annual Meeting should follow the instructions from their bank or brokerage firm, including any requirement to obtain a legal proxy. Most banks or brokerage firms allow a stockholder to obtain a legal proxy either online or by mail.

What am I voting on?

There are four matters scheduled for a vote:

To elect our Class II director nominee, Jeffrey L. Edwards, to the Board to hold office until the 2028 annual meeting of stockholders.

To approve a proposed amendment to our Amended and Restated Certificate of Incorporation, as amended, to effect a reverse split of our outstanding common stock in the range of 1-for-10 to 1-for-25 to enable the company to comply with the Nasdaq stock market’s continued listing requirements.

To approve, on an advisory basis, the compensation of the Company’s named executive officers.

To ratify the selection, by the Audit Committee of the Board, of PricewaterhouseCoopers LLP as the independent registered public accounting firm of the Company for the year ending December 31, 2025.

What if another matter is properly brought before the Annual Meeting?

The Board knows of no other matters that will be presented for consideration at the Annual Meeting. If any other matters are properly brought before the Annual Meeting, it is the intention of the persons named in the accompanying proxy to vote on those matters in accordance with their best judgment.

How do I vote?

For Proposal No. 1, you may either vote “For” our Class II director nominee to the Board or you may “Withhold” your vote.

For Proposal No. 2, you may vote “For” or “Against,” or abstain from voting.

For Proposal No. 3, you may vote “For” or “Against,” or abstain from voting.

For Proposal No. 4, you may vote “For” or “Against,” or abstain from voting.

The procedures for voting are fairly simple:

Stockholder of Record: Shares Registered in Your Name

If you are a stockholder of record, you may vote online at the Annual Meeting, vote by proxy over the telephone, vote by proxy through the internet, or vote by proxy using a proxy card that you may request or that was delivered to you. Whether or not you plan to attend the Annual Meeting, we urge you to vote by proxy to ensure your vote is counted. You may still attend the Annual Meeting and vote online even if you have already voted by proxy.

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To vote online during the Annual Meeting, please visit www.virtualshareholdermeeting.com/FGEN2025. You will be asked to provide the 16-digit control number included on your Notice, your proxy card (that you may request or that was delivered to you) or the instructions that accompanied your proxy materials. Once you have logged into the Annual Meeting, please follow the instructions to vote your shares. If you do not have your 16-digit control number, you will be able to access and listen to the Annual Meeting but you will not be able to vote your shares or submit questions.

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To vote by telephone before the Annual Meeting, dial toll-free 1-800-690-6903 using a touch-tone phone and follow the recorded instructions. You will be asked to provide the 16-digit control number included on your Notice, your proxy card (that you may request or that was delivered you) or the instructions that accompanied your proxy materials. Your vote must be received by 11:59 p.m. Eastern Time on June 3, 2025 to be counted.

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To vote using a proxy card before the Annual Meeting, simply complete, sign, and date the proxy card that you may request or that was delivered to you and return it promptly in the envelope provided. If you return your signed proxy card to us before the Annual Meeting, we will vote your shares as you direct.

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To vote through the internet before the Annual Meeting, visit www.proxyvote.com to complete an electronic proxy card. You will be asked to provide the 16-digit control number included on your Notice, your proxy card (that you may request or that was delivered you) or the instructions that accompanied your proxy materials. Your vote must be received by 11:59 p.m. Eastern Time on June 3, 2025 to be counted.

Beneficial Owner: Shares Registered in the Name of a Broker or Bank

If you are a beneficial owner of shares registered in the name of your broker, bank or other nominee, you should have received a Notice containing voting instructions from that organization rather than from us. Simply follow the instructions in the Notice to ensure that your vote is counted. Please also note that since you are not the stockholder of record, you may only vote your shares during the Annual Meeting if you request and obtain a valid 16-digit control number from your broker, bank or other nominee. Beneficial owners who attend the Annual Meeting should follow the instructions at www.virtualshareholdermeeting.com/FGEN2025 to vote during the meeting.

     Internet proxy voting is provided to allow you to vote your shares online, with procedures designed to ensure the authenticity and correctness of your proxy vote instructions. However, please be aware that you must bear any costs associated with your internet access, such as usage charges from internet access providers and telephone companies.

    

What does it mean if I receive more than one set of proxy materials?

You should receive more than one set of proxy materials if your shares are registered under different names or held in different accounts as of the Record Date (for example, if you are both a stockholder of record and beneficial owner). Please follow the voting instructions and vote separately for each set of proxy card/materials you receive to ensure that all of your shares are voted. All of your shares may be voted at www.proxyvote.com regardless of which account they are registered or held in.

How many votes do I have?

On each matter to be voted upon, you have one vote for each share of common stock you own as of April 11, 2025.

Who is paying for this proxy solicitation?

We will pay for the entire cost of soliciting proxies. In addition to these proxy materials, our directors and employees may also solicit proxies in person, by telephone or by other means of communication. Directors and employees will not be paid any additional compensation for soliciting proxies.

Can I vote my shares by filling out and returning the Notice?

No. The Notice will, however, provide instructions on how to vote online, by telephone, by mail (by requesting a paper proxy card or voting instruction card), and at the Annual Meeting.

Can I change my vote after submitting my proxy?

Stockholder of Record: Shares Registered in Your Name

Yes. You can revoke your proxy at any time before the final vote at the Annual Meeting. If you are the record holder of your shares, you may revoke your proxy in any one of the following ways:

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You may submit another properly completed proxy card with a later date;

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You may submit a subsequent proxy by telephone or through the internet (only your last telephone or internet proxy will be counted) before 11:59 p.m. Eastern Time on June 3, 2025;

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You may send a timely written notice that you are revoking your proxy to our Secretary at 350 Bay Street, Suite 100 # 6009, San Francisco, CA 94133; or

•

You may attend and vote at the Annual Meeting by following the instructions at www.virtualshareholdermeeting.com/FGEN2025. Simply attending the Annual Meeting will not, by itself, revoke your proxy.

Your most current vote (prior to the deadline) by internet, telephone or proxy card is the one that is counted.

Beneficial Owner: Shares Registered in the Name of a Broker or Bank

If you are a beneficial owner of shares registered in the name of your broker, bank or other nominee, you must contact the organization holding your shares and follow their instructions for revoking or changing your vote.

When are stockholder proposals due for next year’s annual meeting of stockholders?

Any stockholder who meets the requirements of the proxy rules under the Securities Exchange Act of 1934, as amended (the “Exchange Act”), may submit proposals to the Board to be presented at the 2026 annual meeting of stockholders. Such proposals must comply with the requirements of Rule 14a-8 under the Exchange Act. To be considered for inclusion in next year’s proxy materials, your proposal must be submitted in writing by December 21, 2025, to our Secretary at 350 Bay Street, Suite 100 #6009, San Francisco, CA 94133; provided, however, that if our 2026 annual meeting of stockholders is held before May 5, 2026 or after July 4, 2026, then the deadline is a reasonable amount of time prior to the date we begin to print and mail our proxy statement for the 2026 annual meeting of stockholders.

Our amended and restated bylaws also provide for separate notice procedures to recommend a person for nomination as a director or to propose business to be considered by stockholders at a meeting, provided that such proposal or nominee would not be included in next year’s proxy materials. Such proposals must comply with the requirements, including without limitation, the separate notice procedures, of our amended and restated bylaws. If you wish to submit such a proposal or nominate a director, written notice must be received by our Secretary no later than the close of business on March 6, 2026 nor earlier than the close of business on February 4, 2026; provided, however, that if our 2026 annual meeting of stockholders is held before May 5, 2026 or after July 4, 2026, then the proposal must be received no earlier than the close of business on the 120th day prior to such annual meeting and no later than the close of business on the later of the 90th day prior to such annual meeting or the 10th day following the day on which public announcement of the date of such annual meeting is first made.

How are votes counted?

Votes will be counted separately for each proposal by the inspector of election appointed for the Annual Meeting. For the proposal to elect directors, only “For” votes and “Withhold” votes will be counted. With respect to Proposal No. 2, only “For” votes and “Against” votes will be counted. Abstentions will not be counted and will have no effect on the vote for Proposal No. 2. With respect to Proposals No. 3 and No. 4, votes “For” and “Against” and abstentions will be counted, with abstentions having the same effect as “Against” votes.

What if I return a proxy card or otherwise vote but do not make specific choices?

Stockholder of Record: Shares Registered in Your Name. If you are a stockholder of record and return a signed and dated proxy card or otherwise vote without marking a voting selection, your shares will be voted as follows:

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“For” the election of each of the three Class I director nominees named in this proxy statement to serve on the Board (Proposal No. 1);

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“For” the approval a reverse split of our outstanding common stock in the range of 1-for-10 to 1-for-25 to enable the company to comply with the Nasdaq stock market’s continued listing requirements (Proposal No. 2);

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“For” the approval, on an advisory basis, of the compensation of our named executive officers (Proposal No. 3);

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“For” the ratification of the appointment of PricewaterhouseCoopers LLP as our independent registered public accounting firm for the fiscal year ending December 31, 2025 (Proposal No. 4); and

If any other matter is properly presented at the Annual Meeting, your proxy holder (one of the individuals named on the proxy card) will vote your shares as recommended by the Board or, if no recommendation is given, will vote your shares using his or her best judgment.

Beneficial Owner: Shares Registered in the Name of a Broker or Bank. If you are a beneficial owner of shares registered in the name of your broker, bank, or other nominee, and you do not provide the broker or other nominee that holds your shares with voting instructions, the broker or other nominee may vote your shares if they have discretionary authority to vote on the particular matter.

What are “broker non-votes”?

Broker non-votes occur when a beneficial owner of shares held in “street name” does not give instructions to the broker or nominee holding the shares as to how to vote on matters deemed “non-routine.” Generally, if shares are held in street name, the beneficial owner of the shares is entitled to give voting instructions to the broker or nominee holding the shares. If the beneficial owner does not provide voting instructions, the broker or nominee can still vote the shares with respect to matters that are considered to be “routine,” but not with respect to “non-routine” matters. Under the rules and interpretations of The New York Stock Exchange, “non -routine” matters are matters that may substantially affect the rights or privileges of stockholders, such as mergers, stockholder proposals, elections of directors (even if not contested), approval of a new equity incentive plan, and executive compensation, including the advisory stockholder votes on executive compensation and on the frequency of stockholder votes on executive compensation.

How many votes are needed to approve each proposal?

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For Proposal No. 1, the election of directors, the Class II director nominee to serve until the 2028 annual meeting of stockholders receiving the most “For” votes from the holders of shares present online at the Annual Meeting or represented by proxy and entitled to vote generally on the election of directors will be elected. Only “For” votes will affect the outcome. Broker non-votes will have no effect.

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For Proposal No. 2, the vote to approve a reverse split of our outstanding common stock in the range of 1-for-10 to 1-for-25 will be considered to be approved if it receives “For” votes from the majority of votes cast either online or by proxy at the Annual Meeting and that are entitled to vote generally on the subject matter. This is a routine proposal, we do not expect any broker non-votes.

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For Proposal No. 3, the advisory vote to approve the compensation of the Company’s named executive officers will be considered to be approved if it receives “For” votes from the holders of a majority of shares present online at the Annual Meeting or represented by proxy and entitled to vote generally on the subject matter. If you “Abstain” from voting, it will have the same effect as an “Against” vote. Broker non-votes will have no effect.

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To be approved, Proposal No. 4, ratification of the selection of PricewaterhouseCoopers LLP as the Company’s independent registered public accounting firm for its year ending December 31, 2025, must receive “For” votes from the holders of a majority of shares present online at the Annual Meeting or represented by proxy and entitled to vote generally on the subject matter. If you “Abstain” from voting, it will have the same effect as an “Against” vote. This is a routine proposal, we do not expect any broker non-votes.

What is the quorum requirement?

A quorum of stockholders is necessary to hold a valid Annual Meeting. A quorum will be present if stockholders holding at least one-third of the issued and outstanding shares entitled to vote are present online at the Annual Meeting or represented by proxy. On the Record Date, there were 101,043,970 shares of common stock outstanding and entitled to vote. Thus, the holders of 33,344,511 shares must be present online or represented by proxy at the Annual Meeting to have a quorum.

Your shares will be counted towards the quorum only if you submit a valid proxy (or one is submitted on your behalf by your broker, bank, or other nominee) or if you vote at the Annual Meeting. Abstentions and broker non-votes will be counted towards the quorum requirement. If there is no quorum, the holders of a majority of shares present at the Annual Meeting online or represented by proxy may adjourn the Annual Meeting to another date.

How can I find out the results of the voting at the Annual Meeting?

Preliminary voting results will be announced at the Annual Meeting. In addition, final voting results will be published in a current report on Form 8-K that we expect to file within four business days after the Annual Meeting. If final voting results are not available to us in time to file a current report on Form 8-K within four business days after the Annual Meeting, we intend to file a Form 8-K to publish preliminary results and, within four business days after the final results are known to us, file an amended report on Form 8-K to publish the final results.

Which proxy materials are available online?

The proxy statement and Annual Report on Form 10-K are available at www.proxyvote.com.

SPECIAL NOTE REGARDING FORWARD-LOOKING STATEMENTS

This proxy statement contains forward-looking statements. These statements relate to future events or our future financial performance and involve known and unknown risks, uncertainties and other factors that could cause our actual results, levels of activity, performance, or achievement to differ materially from those expressed or implied by these forward-looking statements.

Forward-looking statements include all statements that are not historical facts. In some cases, you can identify forward-looking statements by terms such as “may,” “will,” “should,” “could,” “would,” “expects,” “plans,” “anticipates,” “seeks,” “intends,” “strives,” “believes,” “estimates,” “projects,” “predicts,” “potential,” or the negative of those terms, and similar expressions and comparable terminology intended to identify forward-looking statements. These statements reflect our current views with respect to future events and are based on assumptions and subject to risks and uncertainties, including those outlined in our Annual Report. Given these uncertainties, you should not place undue reliance on these forward-looking statements. These forward-looking statements represent our estimates and assumptions only as of the date of this proxy statement and, except as required by law, we undertake no obligation to update or revise publicly any forward-looking statements, whether as a result of new information, future events, or otherwise after the date of this proxy statement.

PROPOSAL 1

ELECTION OF DIRECTORS

The Board is divided into three classes: Class I, Class II, and Class III, with each class having a three-year term. Vacancies on the Board, unless the Board determines by resolution that any such vacancies shall be filled by stockholders, may be filled only by persons elected by a majority of the remaining directors. A director elected by the Board to fill a vacancy in a class, including vacancies created by an increase in the number of directors, shall serve for the remainder of the full term of that class and until the director’s successor is duly elected and qualified.

The Board presently has 5 members. There is one director in Class II whose term of office expires in 2025. The nominee for election this year to Class II, Jeffrey L. Edwards, is currently a director of the Company and was previously elected by our stockholders and appointed by the Board. If re-elected at the Annual Meeting, the Class II director nominee would serve until the 2028 annual meeting of stockholders and until his successor has been duly elected and qualified, or if sooner, until his death, resignation, or removal. It is the Company’s policy to encourage directors and nominees for director to attend the Annual Meeting. Eight directors then-elected and serving as directors attended the 2024 annual meeting of stockholders.

Directors are elected by a plurality of the votes of the holders of shares present online at the Annual Meeting, by remote communication, if applicable, or represented by proxy and entitled to vote generally on the election of directors. The Class II director nominee receiving the highest number of affirmative votes will be elected. Stockholders may not vote, or submit a proxy, for a greater number of Class II director nominees than the number of Class II director nominees named in this proxy statement. Shares represented by executed proxies will be voted, if authority to do so is not withheld, for the election of the Class II director nominees named below. If the Class II director nominee becomes unavailable for election as a result of an unexpected occurrence, shares that would have been voted for that Class II director nominee will instead be voted for the election of a substitute nominee proposed by the Company. Each person nominated for election has agreed to serve if elected. The Company’s management has no reason to believe that the Class II director nominee will be unable to serve.

DIRECTORS CONTINUING IN OFFICE UNTIL THE 2027 ANNUAL MEETING — CLASS I

Thane Wettig, age 60, has served as our Chief Executive Officer beginning October 6, 2023, and was formerly Chief Commercial Officer between June 2020 and July 22, 2023. On July 23, 2023, Mr. Wettig was appointed as interim Chief Executive Officer. Mr. Wettig has more than 30 years of global biopharmaceutical leadership and commercial experience. Mr. Wettig previously served as Chief Commercial Officer and Metabolic Franchise Head at Intarcia Therapeutics. Prior to joining Intarcia in 2018, Mr. Wettig served as Chief Marketing Officer (Vice President of Global Marketing, Strategy and Alliance Management) for Lilly Diabetes, leading the development and launch of multiple blockbuster diabetes medicines during a period of unprecedented growth of Lilly’s diabetes business. Mr. Wettig began his career at Lilly in 1990. He was promoted to Vice President of Global Marketing for Diabetes Brands in 2004, and assumed the role as Chief Marketing Officer for Lilly Diabetes when it was formed in 2009. Mr. Wettig also played an integral role in the design and management of Lilly’s highly successful diabetes alliance between Lilly and Boehringer-Ingelheim. He is recognized throughout the industry as a seasoned executive with extensive brand building and launch experience. Mr. Wettig received his M.B.A. and B.A. in biology from Washington University in St. Louis.

James A. Schoeneck, age 67, was appointed Chairperson of our Board of Directors in January 2020 and has served on our board of directors since April 2010. Following the unexpected passing of Thomas B. Neff, FibroGen’s Founder and Chief Executive Officer, Mr. Schoeneck served as Interim Chief Executive Officer from August 2019 until January 2020. Mr. Schoeneck was Chief Executive Officer of Depomed, Inc., a commercial specialty pharmaceutical company, from 2011 until 2017, and joined the Board of Depomed in 2007. In addition, from 2015 to 2018, Mr. Schoeneck served on the board of directors of AnaptysBio, Inc. From 2005 until 2011, he was Chief Executive Officer of BrainCells, Inc., a privately-held biopharmaceutical company. Prior to joining BrainCells, Inc., he served as Chief Executive Officer of ActivX BioSciences, Inc., a development-stage biotechnology company. Mr. Schoeneck’s pharmaceutical experience also includes three years as President and Chief Executive Officer of Prometheus Laboratories Inc., a pharmaceutical and diagnostics products company. Prior to joining Prometheus, Mr. Schoeneck spent three years as Vice President and General Manager, Immunology, at Centocor Inc. (now Janssen Biotech, Inc.), a biotechnology company, where he led the development of Centocor’s commercial capabilities. His group launched Remicade®, which became one of the world’s largest pharmaceutical brands. Earlier in his career, he spent 13 years at Rhone-Poulenc Rorer Inc. (now Sanofi), a pharmaceutical company, serving in various sales and marketing positions of increasing responsibility. Since July 2020, Mr. Schoeneck has served on the board of Calidi Biotherapeutics, a cancer therapeutics company focused on oncolytic viruses and stem cells. Mr. Schoeneck holds a B.S. in Education from Jacksonville State University. We believe that Mr. Schoeneck is qualified to serve on the Board because of his extensive management experience in biotechnology.

Maykin Ho, Ph.D., age 72, joined our board of directors in December 2018. Dr. Ho has more than 30 years of experience in the healthcare and finance industries. She serves on the boards of directors for Agios Pharmaceuticals, BioMarin Pharmaceutical Inc., Neumora Therapeutics, Parexel International Corporation, the Aaron Diamond AIDS Research Center, and the Institute for Protein Innovation. Dr. Ho is also a venture partner of Qiming Venture Partners, which she joined in July 2015, and a member of the Biotech Advisory Panel of the Stock Exchange of Hong Kong. In February 2015, Dr. Ho retired as a partner of the Goldman Sachs Group where she served as senior biotechnology analyst, co-head of healthcare for global investment research and advisory director for healthcare investment banking. Prior to Goldman Sachs, which she joined in 1992, Dr. Ho held various managerial positions in licensing, strategic planning, marketing and research at DuPont-Merck Pharmaceuticals and DuPont de Nemours & Company. She was a postdoctoral fellow at Harvard Medical School and a graduate of the Advanced Management Program at The Fuqua School of Business, Duke University. Dr. Ho received a Ph.D. in Microbiology and Immunology and a B.S. from the State University of New York, Downstate Medical Center. We believe Dr. Ho is qualified to serve on the Board because of her substantial experience in the healthcare and finance industries and her expertise in analysis of science and biotechnology.

NOMINEE FOR ELECTION FOR A THREE-YEAR TERM EXPIRING AT THE 2028 ANNUAL MEETING — CLASS II

Jeffrey L. Edwards, age 64, was appointed to our board of directors in 2015 after Mr. Edwards retired Allergan Inc., which he joined in 1993 and where he served as Executive Vice President, Finance and Business Development, Chief Financial Officer from September 2005 to August 2014. From 2003 to 2005, Mr. Edwards served as Allergan’s Corporate Vice President, Corporate and Business Development, and previously served as Senior Vice President, Treasury, Tax, and Investor Relations. Prior to joining Allergan, Mr. Edwards was with Banque Paribas and Security Pacific National Bank, where he held various senior-level positions in the credit and business development functions. In addition to serving on the board of directors of FibroGen, Inc., Mr. Edwards currently serves on the Compliance Committee, Audit Committee and as Compensation Committee Chairman of Bio-Rad Laboratories, Inc., a publicly traded, life sciences research and clinical diagnostic products company. Mr. Edwards serves on the board of directors, Audit Committee and Nominating and Corporate Governance Committee of Clearside Biomedical Inc., a publicly traded, clinical stage pharmaceutical company. Mr. Edwards received a B.A. in Sociology from Muhlenberg College and completed the Advanced Management Program at the Harvard Business School. We believe that Mr. Edwards is qualified to serve on the Board due to his pharmaceutical industry experience and public financial expertise.

DIRECTORS CONTINUING IN OFFICE UNTIL THE 2026 ANNUAL MEETING — CLASS III

Aoife Brennan, M.B., B.Ch., age 49, was appointed to our board of directors in August 2020. Dr. Brennan is President and Chief Executive Officer of Climb Bio since June 2024. Previously she served as CEO of Synlogic Inc from October 2018 to March 2024. Prior to joining Synlogic, Dr. Brennan served as Vice President and Head of the Rare Disease Innovation Unit at Biogen where her responsibilities included the global marketing approvals of ALPROLIX®, ELOCTATE® and SPINRAZA® as well as the advancement of several early-phase programs and external collaborations. She served as a Director of Ra Pharmaceuticals from September 2018 through their acquisition in April 2020 and has served as a Director of Cerevance since January 2020 and as a Director of Xilio since June 2024. Dr. Brennan holds a medical degree from Trinity College, Dublin, Ireland and completed residency and fellowship training in general internal medicine and endocrinology. She has completed post-doctoral training in clinical research and metabolism at the Beth Israel Deaconess Medical Center in Boston and is a graduate of the Harvard Medical School Scholars in Clinical Science Program. We believe Dr. Brennan is qualified to serve on the Board due to her broad clinical development background and management experience in biotechnology.

THE BOARD OF DIRECTORS RECOMMENDS

A VOTE “FOR” THE NAMED CLASS II DIRECTOR NOMINEE.

DIRECTORS AND CORPORATE GOVERNANCE

INDEPENDENCE OF THE BOARD OF DIRECTORS

Under the listing requirements and rules of Nasdaq, independent directors must comprise a majority of the Board. In addition, the rules of Nasdaq require that, subject to specified exceptions, each member of a listed company’s audit, compensation, and Nominating and Corporate Governance Committees must be independent. Audit committee members must also satisfy the independence criteria set forth in Rule 10A-3 under the Exchange Act. Under the rules of Nasdaq, a director will only qualify as an “independent director” if, in the opinion of that company’s board of directors, that person does not have a relationship that would interfere with the exercise of independent judgment in carrying out the responsibilities of a director.

In order to be considered to be independent for purposes of Rule 10A-3 of the Exchange Act, a member of an audit committee of a listed company may not, other than in his or her capacity as a member of the audit committee, the board of directors, or any other board committee: (1) accept, directly or indirectly, any consulting, advisory, or other compensatory fee from the listed company or any of its subsidiaries; or (2) be an affiliated person of the listed company or any of its subsidiaries.

The Board has undertaken a review of its composition, the composition of its committees and the independence of each director. Based upon information requested from and provided by each director concerning his or her background, employment, and affiliations, including family relationships, the Board has determined that James A. Schoeneck, Aoife Brennan, M.B., B.Ch., Jeffrey L. Edwards, and Maykin Ho, Ph.D., currently representing a majority of our directors, do not have any relationships that would interfere with the exercise of independent judgment in carrying out the responsibilities of a director and that each of these directors is “independent” as that term is defined under the applicable rules and regulations of the SEC and the listing requirements of Nasdaq. Thane Wettig, the Company’s Chief Executive Officer, is not an independent director by virtue of his employment with the Company.

The Board also determined that Messrs. Edwards and Schoeneck and Dr. Brennan, who comprise our Audit Committee, Mr. Schoeneck and Dr. Brennan,who comprise our Compensation Committee, and Messrs. Schoeneck and Edwards, who comprise our Nominating and Corporate Governance Committee, satisfy the independence standards for those committees established by applicable rules and regulations of the SEC and the listing requirements of Nasdaq.

In making these determinations, the Board considered the current and prior business and personal activities and relationships that each non-employee director has, or has had, with our Company and all other facts and circumstances the Board deemed relevant in determining their independence, including the beneficial ownership of our capital stock by each non-employee director.

BOARD LEADERSHIP STRUCTURE

The Board believes that the composition, strength, and experience of the current members of the Board, with 4 of the 5 current members qualifying as independent directors, including our Chairperson of the Board, will ensure that the Board continues to perform its duties independently as it concentrates on the most important areas of concern to the Company and evaluates the performance of the Company’s executive officers, including our Chief Executive Officer.

The Board has been led by Mr. Schoeneck, an independent, non-executive Chairperson of the Board since January 2020. Our Board believes that it is in the best interest of the Company and its stockholders for Mr. Schoeneck to continue to serve as Chairperson of the Board. Mr. Schoeneck possesses significant knowledge and experience in our industry and a deep understanding of our strategic objectives, all of which will continue to benefit the Company during the year ahead. The Company believes that separation of the positions of the Chairperson and Chief Executive Officer reinforces the independence of the Board in its oversight of the business and affairs of the Company. In addition, the Company believes that having an independent Chairperson creates an environment that is more conducive to the Board’s objective evaluation and oversight of management’s performance, increasing management accountability, and improving the ability of the Board to monitor whether management’s actions are in the best interests of the Company and its stockholders, including with respect to evaluating whether steps management is taking to manage risks are appropriate for the Company. The responsibilities of our Chairperson of the Board include: establishing the agenda for regular Board meetings and serving as Chairperson of such meetings; establishing the agenda for meetings of the independent directors; coordinating with the committee Chairs regarding meeting agendas and informational requirements; presiding over meetings of the independent directors; presiding over any portions of meetings of the Board at which the evaluation or compensation of the Chief Executive Officer is

presented or discussed; presiding over any portions of meetings of the Board at which the performance of the Board is presented or discussed; and presiding at all meetings of the stockholders. As a result, we believe that such separation can enhance the effectiveness of our Board as a whole. We believe that the leadership structure of our Board is appropriate and enhances its ability to effectively carry out its roles and responsibilities on behalf of our stockholders.

ROLE OF THE BOARD IN RISK OVERSIGHT

One of the Board’s key functions is informed oversight of the Company’s risk management process. The Board is responsible for monitoring and assessing fundamental financial and business strategies and major corporate actions, assessing major risks facing FibroGen and considering ways to address those risks, selecting and overseeing management and determining its composition, and overseeing the establishment and maintenance of processes and conditions to maintain the integrity of FibroGen.

Throughout the year, our Board of Directors and its Committees engage with management to discuss and mitigate a wide range of enterprise risks, including cybersecurity and the Company's overall enterprise risk management ("ERM").

Our Audit Committee of the Board of Directors has the responsibility to review and discuss with management the Company’s guidelines, policies, and governance with respect to financial risk exposures and enterprise risk management (including with respect to cybersecurity) and to regularly report to the full Board. Our Audit Committee also oversees our internal audit department and management’s internal controls over financial reporting, including with respect to cybersecurity. Our Audit Committee receives regular presentations and reports on cybersecurity risks, progress on continued updates to the Company’s cybersecurity procedures, as well as is made aware, on a timely basis, of any cybersecurity incidents deemed significant enough to be raised to their attention by management, as well as ongoing updates regarding any such incident until it has been remediated.

Our Audit Committee also monitors legal matters and compliance with legal and regulatory requirements regarding the Company’s financial statements and accounting and other policies. Our Audit Committee also has overall responsibility for our Environmental Social and Governance plan and reporting.

Our Nominating and Corporate Governance Committee monitors the effectiveness of our corporate governance guidelines and policies as well as diversity matters with respect to the composition of the Board.

Our Compensation Committee assesses and monitors whether any of our compensation and human capital policies and programs have the potential to encourage excessive risk-taking, as well as employee diversity and pay-equity matters.

It is the responsibility of the committee Chairs to report findings to the Board. In addition, the Board meets with certain members of our executive team, including the head of our legal and compliance functions, who discuss the risks and exposures involved in their respective areas of responsibility, as well as any developments that could impact our risk profile or other aspects of our business.

CORPORATE RESPONSIBILITY

At FibroGen, we have embraced a corporate vision statement across our enterprise: At FibroGen, our purpose is to develop novel therapies at the frontiers of cancer biology and anemia. Our vision is to be oncology innovators making a meaningful impact on the lives of patients in urgent need of transformative therapies. To reach this goal, our mission is to apply pioneering oncology expertise to deliver breakthrough therapies to patients.

Further, to enable our vision of excellence, we established a set of company-wide core values: empowerment, integrity and respect.

Empowerment – We lead, inspire, trust and encourage each other to share ideas and assume new challenges to excel. We are accountable to each other and our commitment to our patients.

Integrity – We intend to hold ourselves to the highest ethical standards in all we do: our work to bring therapies to market, the science we perform and our commitment to each other.

Respect for People – We strive to foster individual growth and promote an environment that supports continued learning. We stand together as a community to build and sustain a culture of diversity, equity & inclusion; and value each other’s opinion and work collaboratively to achieve optimal outcomes while treating each other with high regard and dignity. We also believe it is critical to conserve our world’s resources and strive to create a safe and healthy environment for our employees and patients.

These values are an integral part of our culture, our rewards, and recognition and performance management systems.

In 2023, we performed an environmental, social, and governance (“ESG”) assessment of our operations, finding that we accomplished most of our ESG goals, including adopting a policy to increase patient diversity in clinical trials. In 2024, we adopted a cybersecurity incidence response policy and committee charter and approved the 2024 Equity Incentive Plan.

Environment, Health and Safety

For pharmaceutical companies, the product life cycle and supply chain require the use of valuable resources. FibroGen is committed to continuously reducing its environmental footprint. We adhere to California environmental, health and safety standards and city ordinances. Reports from city inspections are shared with the management and appropriate corrective actions are executed across the Company. We have implemented programs to recycle or donate electronic equipment when possible, provide organic compost services in the workplace, use environmentally preferred office and janitorial supplies, reduced paper waste, and have worked with our collaboration partners to reduce the amount of our product packaging and to implement good shipping practices to consolidate waste. In addition to adhering to environmental regulations, we offer a subsidized public transit commuter program, onsite electric vehicle charging stations, a flexible work from home policy, global access to video conferencing and meetings, and online medical monitoring to reduce travel.

Ensuring that we have numerous programs in place to increase safety is critical to our success and fosters an experience of excellence at FibroGen. We continue to invest in lab and employee safety as well as employee health. We are also continuing to make investments in product safety and quality, and patient safety through our support of patient advocacy groups, patient support groups, expanded drug access programs, and clinical trial extensions.

Social, Diversity, Equity, and Inclusion

The biotechnology industry is an extremely competitive labor market and recruiting and retaining employees is critical to the continued success of our business. We are highly committed to building a diverse, dedicated, and impassioned team to deliver innovative therapies to patients facing serious unmet medical needs. Our core values of empowerment, integrity and respect for people are fundamental to how we attract, grow, engage, and retain our people. We focus on recruiting, retaining, and developing employees from a diverse range of backgrounds to conduct our research, development, commercialization, and administrative activities.

Our offerings include competitive, innovative and equitable pay practices, comprehensive health and wellness benefits, retirement and life insurance offerings, learning and giving programs, and flexible work arrangements. We also sponsor an annual promotions nomination and approval process.

On our Board of Directors, 2 of 5 members (40%) are female and 1 of 5 members (20%) identify as Asian.

As of March 2025, our U.S. workforce is 54% female. Our U.S. employees that self-report ethnicity are 62% Asian, Hispanic or Black.

Governance and Risk Management

To enhance our corporate governance efforts, we maintain an internal audit function, made substantial improvements to our Sarbanes-Oxley compliance program and strengthened our internal controls over financial reporting. Throughout the year, the Board and its Committees engage with management to discuss a wide range of enterprise risks, such as risks related to FibroGen’s businesses, cybersecurity, and enterprise risk management, and they confirm the alignment of risk assessment and mitigation with business strategy.

We implemented an ERM program in 2022 and since then, we have performed enterprise risk assessments to help us identify and manage risks and seize opportunities that may arise as we seek to accomplish our corporate goals. ERM affects all areas of our business, including how we approach new or emerging challenges and opportunities and allocate resources. One of the organic benefits of a formal ERM process is that it builds and strengthens the risk awareness across the organization (enterprise-level, functional, and project-level risks) with a patient-first mindset. As we pursue our mission of delivering therapies in areas of significant unmet need, ERM facilitates and supports the delivery of our corporate objectives. This will be achieved through understanding and identifying risks and opportunities while putting the appropriate plans in place to capitalize on the ERM.

With respect to cybersecurity risks, our Board of Directors recognizes that cybersecurity represents an important component of the Company's overall enterprise risk management. Throughout the year, our Board of Directors and its Committees engage with management to discuss and mitigate a wide range of enterprise risks, including cybersecurity. We seek to mitigate cybersecurity risks through a cross-functional approach, including our Cybersecurity Committee, focused on preserving the confidentiality, security, and availability of the information that the Company collects and stores by identifying, preventing and mitigating cybersecurity threats and effectively responding to and remediating cybersecurity incidents as and if they occur.

We continually invest in information and cybersecurity services and technologies. Technical safeguards are designed to protect the Company's information systems from cybersecurity threats, including firewalls, continuous intrusion detection and response system(s), data leak prevention strategies, enhanced email protection software, antimalware functionality and access controls. These safeguards are evaluated and improved through periodic assessme