<?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>0001833593</cik>
          <ccc>XXXXXXXX</ccc>
        </filerCredentials>
      </filer>
      <liveTestFlag>LIVE</liveTestFlag>



    </filerInfo>
  </headerData>
  <formData>
    <issuerInfo>
      <issuerCik>0000920371</issuerCik>
      <issuerName>Simpson Manufacturing Co., Inc.</issuerName>
      <secFileNumber>001-13429</secFileNumber>
      <issuerAddress>
        <com:street1>5956 W LAS POSITAS BLVD</com:street1>
        <com:city>PLEASANTON</com:city>
        <com:stateOrCountry>CA</com:stateOrCountry>
        <com:zipCode>94588</com:zipCode>
      </issuerAddress>
      <issuerContactPhone>9255609000</issuerContactPhone>
      <nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>Olosky Michael</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
      <relationshipsToIssuer>
        <relationshipToIssuer>Officer</relationshipToIssuer>
      </relationshipsToIssuer>
    </issuerInfo>
    <securitiesInformation>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <brokerOrMarketmakerDetails>
        <name>Charles Schwab Corp.</name>
        <address>
          <com:street1>3000 Schwab Way</com:street1>
          <com:city>Westlake</com:city>
          <com:stateOrCountry>TX</com:stateOrCountry>
          <com:zipCode>76262</com:zipCode>
        </address>
      </brokerOrMarketmakerDetails>
      <noOfUnitsSold>910</noOfUnitsSold>
      <aggregateMarketValue>171552.06</aggregateMarketValue>
      <noOfUnitsOutstanding>42162738</noOfUnitsOutstanding>
      <approxSaleDate>08/26/2024</approxSaleDate>
      <securitiesExchangeName>NYSE</securitiesExchangeName>
    </securitiesInformation>
    <securitiesToBeSold>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <acquiredDate>03/01/2021</acquiredDate>
      <natureOfAcquisitionTransaction>Open market purchase</natureOfAcquisitionTransaction>
      <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
      <isGiftTransaction>N</isGiftTransaction>
      <amountOfSecuritiesAcquired>500</amountOfSecuritiesAcquired>
      <paymentDate>03/01/2021</paymentDate>
      <natureOfPayment>Cash</natureOfPayment>
    </securitiesToBeSold>
    <securitiesToBeSold>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <acquiredDate>05/07/2021</acquiredDate>
      <natureOfAcquisitionTransaction>Open market purchase</natureOfAcquisitionTransaction>
      <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
      <isGiftTransaction>N</isGiftTransaction>
      <amountOfSecuritiesAcquired>400</amountOfSecuritiesAcquired>
      <paymentDate>05/07/2021</paymentDate>
      <natureOfPayment>Cash</natureOfPayment>
    </securitiesToBeSold>
    <securitiesToBeSold>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <acquiredDate>04/23/2021</acquiredDate>
      <natureOfAcquisitionTransaction>Dividend reinvestment</natureOfAcquisitionTransaction>
      <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
      <isGiftTransaction>N</isGiftTransaction>
      <amountOfSecuritiesAcquired>2</amountOfSecuritiesAcquired>
      <paymentDate>04/23/2021</paymentDate>
      <natureOfPayment>N/A</natureOfPayment>
    </securitiesToBeSold>
    <securitiesToBeSold>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <acquiredDate>07/23/2021</acquiredDate>
      <natureOfAcquisitionTransaction>Dividend Reinvestment</natureOfAcquisitionTransaction>
      <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
      <isGiftTransaction>N</isGiftTransaction>
      <amountOfSecuritiesAcquired>2</amountOfSecuritiesAcquired>
      <paymentDate>07/23/2021</paymentDate>
      <natureOfPayment>N/A</natureOfPayment>
    </securitiesToBeSold>
    <securitiesToBeSold>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <acquiredDate>10/29/2021</acquiredDate>
      <natureOfAcquisitionTransaction>Dividend Reinvestment</natureOfAcquisitionTransaction>
      <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
      <isGiftTransaction>N</isGiftTransaction>
      <amountOfSecuritiesAcquired>2</amountOfSecuritiesAcquired>
      <paymentDate>10/29/2021</paymentDate>
      <natureOfPayment>N/A</natureOfPayment>
    </securitiesToBeSold>
    <securitiesToBeSold>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <acquiredDate>01/28/2022</acquiredDate>
      <natureOfAcquisitionTransaction>Dividend Reinvestment</natureOfAcquisitionTransaction>
      <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
      <isGiftTransaction>N</isGiftTransaction>
      <amountOfSecuritiesAcquired>2</amountOfSecuritiesAcquired>
      <paymentDate>01/28/2022</paymentDate>
      <natureOfPayment>N/A</natureOfPayment>
    </securitiesToBeSold>
    <securitiesToBeSold>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <acquiredDate>04/29/2022</acquiredDate>
      <natureOfAcquisitionTransaction>Dividend Reinvestment</natureOfAcquisitionTransaction>
      <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
      <isGiftTransaction>N</isGiftTransaction>
      <amountOfSecuritiesAcquired>2</amountOfSecuritiesAcquired>
      <paymentDate>04/29/2022</paymentDate>
      <natureOfPayment>N/A</natureOfPayment>
    </securitiesToBeSold>
    <nothingToReportFlagOnSecuritiesSoldInPast3Months>Y</nothingToReportFlagOnSecuritiesSoldInPast3Months>
    <remarks>Mr. Olosky obtained a total of 9.4633 additional shares of SSD through dividend reinvestment. The SEC website would not allow me to include the fractional shares in the filing so this has been rounded up to 910 shares. </remarks>
    <noticeSignature>
      <noticeDate>08/26/2024</noticeDate>
      <signature>Michael Olosky</signature>
    </noticeSignature>
  </formData>
</edgarSubmission>
[{"type": "144", "sequence": "1", "filename": "primary_doc.xml", "secsgml_size_bytes": 6085}]
144
0001833593
XXXXXXXX
LIVE
0000920371
Simpson Manufacturing Co., Inc.
001-13429
5956 W LAS POSITAS BLVD
PLEASANTON
CA
94588
9255609000
Olosky Michael
Officer
Common
Charles Schwab Corp.
3000 Schwab Way
Westlake
TX
76262
910
171552.06
42162738
08/26/2024
NYSE
Common
03/01/2021
Open market purchase
Issuer
N
500
03/01/2021
Cash
Common
05/07/2021
Open market purchase
Issuer
N
400
05/07/2021
Cash
Common
04/23/2021
Dividend reinvestment
Issuer
N
2
04/23/2021
N/A
Common
07/23/2021
Dividend Reinvestment
Issuer
N
2
07/23/2021
N/A
Common
10/29/2021
Dividend Reinvestment
Issuer
N
2
10/29/2021
N/A
Common
01/28/2022
Dividend Reinvestment
Issuer
N
2
01/28/2022
N/A
Common
04/29/2022
Dividend Reinvestment
Issuer
N
2
04/29/2022
N/A
Y
Mr. Olosky obtained a total of 9.4633 additional shares of SSD through dividend reinvestment. The SEC website would not allow me to include the fractional shares in the filing so this has been rounded up to 910 shares.
08/26/2024
Michael Olosky