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      <secFileNumber>001-36740</secFileNumber>
      <issuerAddress>
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        <com:city>SAN FRANCISCO</com:city>
        <com:stateOrCountry>CA</com:stateOrCountry>
        <com:zipCode>94158</com:zipCode>
      </issuerAddress>
      <issuerContactPhone>415-978-1200</issuerContactPhone>
      <nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>Eisner Mark</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
      <relationshipsToIssuer>
        <relationshipToIssuer>Officer</relationshipToIssuer>
      </relationshipsToIssuer>
    </issuerInfo>
    <securitiesInformation>
      <securitiesClassTitle>COMMON</securitiesClassTitle>
      <brokerOrMarketmakerDetails>
        <name>ETRADE FINANCIALCORPORATION</name>
        <address>
          <com:street1>3 EDISON DRIVE</com:street1>
          <com:city>ALPHARETTA</com:city>
          <com:stateOrCountry>GA</com:stateOrCountry>
          <com:zipCode>30005</com:zipCode>
        </address>
      </brokerOrMarketmakerDetails>
      <noOfUnitsSold>1090</noOfUnitsSold>
      <aggregateMarketValue>20524.70</aggregateMarketValue>
      <noOfUnitsOutstanding>164904</noOfUnitsOutstanding>
      <approxSaleDate>06/02/2023</approxSaleDate>
      <securitiesExchangeName>NASDAQ</securitiesExchangeName>
    </securitiesInformation>
    <securitiesToBeSold>
      <securitiesClassTitle>COMMON</securitiesClassTitle>
      <acquiredDate>06/02/2023</acquiredDate>
      <natureOfAcquisitionTransaction>RESTRICTED STOCK</natureOfAcquisitionTransaction>
      <nameOfPersonfromWhomAcquired>ISSUER</nameOfPersonfromWhomAcquired>
      <isGiftTransaction>N</isGiftTransaction>
      <amountOfSecuritiesAcquired>1090</amountOfSecuritiesAcquired>
      <paymentDate>06/02/2023</paymentDate>
      <natureOfPayment>COMPENSATION</natureOfPayment>
    </securitiesToBeSold>
    <nothingToReportFlagOnSecuritiesSoldInPast3Months>N</nothingToReportFlagOnSecuritiesSoldInPast3Months>
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      <sellerDetails>
        <name>FBO Mark Eisner</name>
        <address>
          <com:street1>4005 Windward Plaza Drive</com:street1>
          <com:city>Alpharett</com:city>
          <com:stateOrCountry>GA</com:stateOrCountry>
          <com:zipCode>30005</com:zipCode>
        </address>
      </sellerDetails>
      <securitiesClassTitle>RESTRICTED STOCK</securitiesClassTitle>
      <saleDate>03/02/2023</saleDate>
      <amountOfSecuritiesSold>1187</amountOfSecuritiesSold>
      <grossProceeds>25959.57</grossProceeds>
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      <sellerDetails>
        <name>FBO Mark Eisner</name>
        <address>
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          <com:stateOrCountry>GA</com:stateOrCountry>
          <com:zipCode>30005</com:zipCode>
        </address>
      </sellerDetails>
      <securitiesClassTitle>RESTRICTED STOCK</securitiesClassTitle>
      <saleDate>03/08/2023</saleDate>
      <amountOfSecuritiesSold>7363</amountOfSecuritiesSold>
      <grossProceeds>155770.89</grossProceeds>
    </securitiesSoldInPast3Months>
    <securitiesSoldInPast3Months>
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          <com:stateOrCountry>GA</com:stateOrCountry>
          <com:zipCode>30005</com:zipCode>
        </address>
      </sellerDetails>
      <securitiesClassTitle>PSU Milestone Grant</securitiesClassTitle>
      <saleDate>03/10/2023</saleDate>
      <amountOfSecuritiesSold>3885</amountOfSecuritiesSold>
      <grossProceeds>78466.51</grossProceeds>
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    <securitiesSoldInPast3Months>
      <sellerDetails>
        <name>FBO Mark Eisner</name>
        <address>
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          <com:stateOrCountry>GA</com:stateOrCountry>
          <com:zipCode>30005</com:zipCode>
        </address>
      </sellerDetails>
      <securitiesClassTitle>PSU TSR Grant</securitiesClassTitle>
      <saleDate>03/10/2023</saleDate>
      <amountOfSecuritiesSold>6255</amountOfSecuritiesSold>
      <grossProceeds>126334.11</grossProceeds>
    </securitiesSoldInPast3Months>
    <securitiesSoldInPast3Months>
      <sellerDetails>
        <name>FBO Mark Eisner</name>
        <address>
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          <com:city>Alpharetta</com:city>
          <com:stateOrCountry>GA</com:stateOrCountry>
          <com:zipCode>30005</com:zipCode>
        </address>
      </sellerDetails>
      <securitiesClassTitle>RESTRICTED STOCK</securitiesClassTitle>
      <saleDate>04/04/2023</saleDate>
      <amountOfSecuritiesSold>9182</amountOfSecuritiesSold>
      <grossProceeds>172472.85</grossProceeds>
    </securitiesSoldInPast3Months>
    <noticeSignature>
      <noticeDate>06/02/2023</noticeDate>
      <signature>/s/ Mark Eisner</signature>
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144
0001834161
XXXXXXXX
LIVE
0000921299
FIBROGEN INC
001-36740
409 ILLINOIS STREET
SAN FRANCISCO
CA
94158
415-978-1200
Eisner Mark
Officer
COMMON
ETRADE FINANCIALCORPORATION
3 EDISON DRIVE
ALPHARETTA
GA
30005
1090
20524.70
164904
06/02/2023
NASDAQ
COMMON
06/02/2023
RESTRICTED STOCK
ISSUER
N
1090
06/02/2023
COMPENSATION
N
FBO Mark Eisner
4005 Windward Plaza Drive
Alpharett
GA
30005
RESTRICTED STOCK
03/02/2023
1187
25959.57
FBO Mark Eisner
4005 Windward Plaza Drive
Alpharetta
GA
30005
RESTRICTED STOCK
03/08/2023
7363
155770.89
FBO Mark Eisner
4005 Windward Plaza Drive
Alpharetta
GA
30005
PSU Milestone Grant
03/10/2023
3885
78466.51
FBO Mark Eisner
4005 Windward Plaza Drive
Alpharetta
GA
30005
PSU TSR Grant
03/10/2023
6255
126334.11
FBO Mark Eisner
4005 Windward Plaza Drive
Alpharetta
GA
30005
RESTRICTED STOCK
04/04/2023
9182
172472.85
06/02/2023
/s/ Mark Eisner