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      <liveTestFlag>LIVE</liveTestFlag>



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      <secFileNumber>001-37824</secFileNumber>
      <issuerAddress>
        <com:street1>400 FAIRVIEW AVENUE NORTH</com:street1>
        <com:street2>SUITE 1200</com:street2>
        <com:city>SEATTLE</com:city>
        <com:stateOrCountry>WA</com:stateOrCountry>
        <com:zipCode>98109</com:zipCode>
      </issuerAddress>
      <issuerContactPhone>206-517-5300</issuerContactPhone>
      <nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>Baker Cary</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
      <relationshipsToIssuer>
        <relationshipToIssuer>Officer</relationshipToIssuer>
      </relationshipsToIssuer>
    </issuerInfo>
    <securitiesInformation>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <brokerOrMarketmakerDetails>
        <name>Charles Schwab &amp; Co., Inc.</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>305</noOfUnitsSold>
      <aggregateMarketValue>16838.00</aggregateMarketValue>
      <noOfUnitsOutstanding>26859563</noOfUnitsOutstanding>
      <approxSaleDate>09/25/2023</approxSaleDate>
      <securitiesExchangeName>NASDAQ</securitiesExchangeName>
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      <securitiesClassTitle>Common</securitiesClassTitle>
      <acquiredDate>09/25/2023</acquiredDate>
      <natureOfAcquisitionTransaction>Restricted Stock Lapse - See Remarks</natureOfAcquisitionTransaction>
      <nameOfPersonfromWhomAcquired>IMPINJ, INC.</nameOfPersonfromWhomAcquired>
      <isGiftTransaction>N</isGiftTransaction>
      <amountOfSecuritiesAcquired>305</amountOfSecuritiesAcquired>
      <paymentDate>09/25/2023</paymentDate>
      <natureOfPayment>Equity Compensation</natureOfPayment>
    </securitiesToBeSold>
    <nothingToReportFlagOnSecuritiesSoldInPast3Months>N</nothingToReportFlagOnSecuritiesSoldInPast3Months>
    <securitiesSoldInPast3Months>
      <sellerDetails>
        <name>CARY BAKER</name>
        <address>
          <com:street1>400 Fairview Avenue North, Suite 1200</com:street1>
          <com:city>Seattle</com:city>
          <com:stateOrCountry>WA</com:stateOrCountry>
          <com:zipCode>98109</com:zipCode>
        </address>
      </sellerDetails>
      <securitiesClassTitle>IMPINJ, INC.</securitiesClassTitle>
      <saleDate>06/26/2023</saleDate>
      <amountOfSecuritiesSold>312</amountOfSecuritiesSold>
      <grossProceeds>26763.00</grossProceeds>
    </securitiesSoldInPast3Months>
    <securitiesSoldInPast3Months>
      <sellerDetails>
        <name>CARY BAKER</name>
        <address>
          <com:street1>400 Fairview Avenue North, Suite 1200</com:street1>
          <com:city>Seattle</com:city>
          <com:stateOrCountry>WA</com:stateOrCountry>
          <com:zipCode>98109</com:zipCode>
        </address>
      </sellerDetails>
      <securitiesClassTitle>IMPINJ, INC.</securitiesClassTitle>
      <saleDate>07/13/2023</saleDate>
      <amountOfSecuritiesSold>361</amountOfSecuritiesSold>
      <grossProceeds>32441.00</grossProceeds>
    </securitiesSoldInPast3Months>
    <securitiesSoldInPast3Months>
      <sellerDetails>
        <name>CARY BAKER</name>
        <address>
          <com:street1>400 Fairview Avenue North, Suite 1200</com:street1>
          <com:city>Seattle,</com:city>
          <com:stateOrCountry>WA</com:stateOrCountry>
          <com:zipCode>98109</com:zipCode>
        </address>
      </sellerDetails>
      <securitiesClassTitle>IMPINJ, INC.</securitiesClassTitle>
      <saleDate>08/25/2023</saleDate>
      <amountOfSecuritiesSold>1485</amountOfSecuritiesSold>
      <grossProceeds>89408.00</grossProceeds>
    </securitiesSoldInPast3Months>
    <securitiesSoldInPast3Months>
      <sellerDetails>
        <name>CARY BAKER</name>
        <address>
          <com:street1>400 Fairview Avenue North, Suite 1200</com:street1>
          <com:city>Seattle</com:city>
          <com:stateOrCountry>WA</com:stateOrCountry>
          <com:zipCode>98109</com:zipCode>
        </address>
      </sellerDetails>
      <securitiesClassTitle>IMPINJ, INC.</securitiesClassTitle>
      <saleDate>09/18/2023</saleDate>
      <amountOfSecuritiesSold>311</amountOfSecuritiesSold>
      <grossProceeds>19674.00</grossProceeds>
    </securitiesSoldInPast3Months>
    <remarks>Shares sold to cover tax obligation from settlement of vested Restricted Stock Units.</remarks>
    <noticeSignature>
      <noticeDate>09/25/2023</noticeDate>
      <signature>CARY BAKER</signature>
    </noticeSignature>
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144
0001705407
XXXXXXXX
LIVE
0001114995
IMPINJ INC
001-37824
400 FAIRVIEW AVENUE NORTH
SUITE 1200
SEATTLE
WA
98109
206-517-5300
Baker Cary
Officer
Common
Charles Schwab & Co., Inc.
3000 Schwab Way
Westlake
TX
76262
305
16838.00
26859563
09/25/2023
NASDAQ
Common
09/25/2023
Restricted Stock Lapse - See Remarks
IMPINJ, INC.
N
305
09/25/2023
Equity Compensation
N
CARY BAKER
400 Fairview Avenue North, Suite 1200
Seattle
WA
98109
IMPINJ, INC.
06/26/2023
312
26763.00
CARY BAKER
400 Fairview Avenue North, Suite 1200
Seattle
WA
98109
IMPINJ, INC.
07/13/2023
361
32441.00
CARY BAKER
400 Fairview Avenue North, Suite 1200
Seattle,
WA
98109
IMPINJ, INC.
08/25/2023
1485
89408.00
CARY BAKER
400 Fairview Avenue North, Suite 1200
Seattle
WA
98109
IMPINJ, INC.
09/18/2023
311
19674.00
Shares sold to cover tax obligation from settlement of vested Restricted Stock Units.
09/25/2023
CARY BAKER