content: <?xml version="1.0" encoding="UTF-8"?><edgarSubmission xmlns="http://www.sec.gov/edgar/ownership" xmlns:com="http://www.sec.gov/edgar/common">
    <headerData>
      <submissionType>144</submissionType>
      <filerInfo>
        <filer>
          <filerCredentials>
            <cik>0001707000</cik>
            <ccc>XXXXXXXX</ccc>
          </filerCredentials>
        </filer>
        <liveTestFlag>LIVE</liveTestFlag>
  
  
  
      </filerInfo>
    </headerData>
    <formData>
      <issuerInfo>
        <issuerCik>0001492422</issuerCik>
        <issuerName>Apellis Pharmaceuticals, Inc.</issuerName>
        <secFileNumber>001-38276</secFileNumber>
        <issuerAddress>
          <com:street1>100 FIFTH AVENUE</com:street1>
          <com:city>WALTHAM</com:city>
          <com:stateOrCountry>MA</com:stateOrCountry>
          <com:zipCode>02451</com:zipCode>
        </issuerAddress>
        <issuerContactPhone>617-977-5700</issuerContactPhone>
        <nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>Sullivan Timothy Eugene</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
        <relationshipsToIssuer>
          <relationshipToIssuer>Officer</relationshipToIssuer>
        </relationshipsToIssuer>
      </issuerInfo>
      <securitiesInformation>
        <securitiesClassTitle>Common</securitiesClassTitle>
        <brokerOrMarketmakerDetails>
          <name>Fidelity Brokerage Services LLC</name>
          <address>
            <com:street1>900 Salem Street</com:street1>
            <com:city>Smithfield</com:city>
            <com:stateOrCountry>RI</com:stateOrCountry>
            <com:zipCode>02917</com:zipCode>
          </address>
        </brokerOrMarketmakerDetails>
        <noOfUnitsSold>906</noOfUnitsSold>
        <aggregateMarketValue>58109.21</aggregateMarketValue>
        <noOfUnitsOutstanding>118499945</noOfUnitsOutstanding>
        <approxSaleDate>01/29/2024</approxSaleDate>
        <securitiesExchangeName>NASDAQ</securitiesExchangeName>
      </securitiesInformation>
      <securitiesToBeSold>
        <securitiesClassTitle>Common</securitiesClassTitle>
        <acquiredDate>01/26/2024</acquiredDate>
        <natureOfAcquisitionTransaction>Restricted Stock Vesting</natureOfAcquisitionTransaction>
        <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
        <isGiftTransaction>N</isGiftTransaction>
        <amountOfSecuritiesAcquired>906</amountOfSecuritiesAcquired>
        <paymentDate>01/26/2024</paymentDate>
        <natureOfPayment>Compensation</natureOfPayment>
      </securitiesToBeSold>
      <nothingToReportFlagOnSecuritiesSoldInPast3Months>N</nothingToReportFlagOnSecuritiesSoldInPast3Months>
      <securitiesSoldInPast3Months>
        <sellerDetails>
          <name>Timothy Sullivan</name>
          <address>
            <com:street1>100 Fifth Avenue</com:street1>
            <com:city>Waltham</com:city>
            <com:stateOrCountry>MA</com:stateOrCountry>
            <com:zipCode>02451</com:zipCode>
          </address>
        </sellerDetails>
        <securitiesClassTitle>Common</securitiesClassTitle>
        <saleDate>11/30/2023</saleDate>
        <amountOfSecuritiesSold>14158</amountOfSecuritiesSold>
        <grossProceeds>774884.35</grossProceeds>
      </securitiesSoldInPast3Months>
      <securitiesSoldInPast3Months>
        <sellerDetails>
          <name>Timothy Sullivan</name>
          <address>
            <com:street1>100 Fifth Avenue</com:street1>
            <com:city>Waltham</com:city>
            <com:stateOrCountry>MA</com:stateOrCountry>
            <com:zipCode>02451</com:zipCode>
          </address>
        </sellerDetails>
        <securitiesClassTitle>Common</securitiesClassTitle>
        <saleDate>01/16/2024</saleDate>
        <amountOfSecuritiesSold>2235</amountOfSecuritiesSold>
        <grossProceeds>149317.22</grossProceeds>
      </securitiesSoldInPast3Months>
      <securitiesSoldInPast3Months>
        <sellerDetails>
          <name>Timothy Sullivan</name>
          <address>
            <com:street1>100 Fifth Avenue</com:street1>
            <com:city>Waltham</com:city>
            <com:stateOrCountry>MA</com:stateOrCountry>
            <com:zipCode>02451</com:zipCode>
          </address>
        </sellerDetails>
        <securitiesClassTitle>Common</securitiesClassTitle>
        <saleDate>01/22/2024</saleDate>
        <amountOfSecuritiesSold>3551</amountOfSecuritiesSold>
        <grossProceeds>230800.80</grossProceeds>
      </securitiesSoldInPast3Months>
      <noticeSignature>
        <noticeDate>01/29/2024</noticeDate>
        <signature>/s/ Jared Cook, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for Timothy E. Sullivan</signature>
      </noticeSignature>
    </formData>
  </edgarSubmission>
metadata_documents: [{"type": "144", "sequence": "1", "filename": "primary_doc.xml", "secsgml_size_bytes": 4593}]
text: 144
  0001707000
  XXXXXXXX
  LIVE
  0001492422
  Apellis Pharmaceuticals, Inc.
  001-38276
  100 FIFTH AVENUE
  WALTHAM
  MA
  02451
  617-977-5700
  Sullivan Timothy Eugene
  Officer
  Common
  Fidelity Brokerage Services LLC
  900 Salem Street
  Smithfield
  RI
  02917
  906
  58109.21
  118499945
  01/29/2024
  NASDAQ
  Common
  01/26/2024
  Restricted Stock Vesting
  Issuer
  N
  906
  01/26/2024
  Compensation
  N
  Timothy Sullivan
  100 Fifth Avenue
  Waltham
  MA
  02451
  Common
  11/30/2023
  14158
  774884.35
  Timothy Sullivan
  100 Fifth Avenue
  Waltham
  MA
  02451
  Common
  01/16/2024
  2235
  149317.22
  Timothy Sullivan
  100 Fifth Avenue
  Waltham
  MA
  02451
  Common
  01/22/2024
  3551
  230800.80
  01/29/2024
  /s/ Jared Cook, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for Timothy E. Sullivan