<SEC-DOCUMENT>0002003074-25-000037.txt : 20251201
<SEC-HEADER>0002003074-25-000037.hdr.sgml : 20251201
<ACCEPTANCE-DATETIME>20251201210246
ACCESSION NUMBER:		0002003074-25-000037
CONFORMED SUBMISSION TYPE:	144
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20251201
DATE AS OF CHANGE:		20251201

SUBJECT COMPANY:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			IMPINJ INC
		CENTRAL INDEX KEY:			0001114995
		STANDARD INDUSTRIAL CLASSIFICATION:	ELECTRONIC COMPONENTS, NEC [3679]
		ORGANIZATION NAME:           	04 Manufacturing
		EIN:				912041398
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		144
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	001-37824
		FILM NUMBER:		251541386

	BUSINESS ADDRESS:	
		STREET 1:		400 FAIRVIEW AVENUE NORTH
		STREET 2:		SUITE 1200
		CITY:			SEATTLE
		STATE:			WA
		ZIP:			98109
		BUSINESS PHONE:		206-517-5300

	MAIL ADDRESS:	
		STREET 1:		400 FAIRVIEW AVENUE NORTH
		STREET 2:		SUITE 1200
		CITY:			SEATTLE
		STATE:			WA
		ZIP:			98109

REPORTING-OWNER:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			SYLEBRA CAPITAL LLC
		CENTRAL INDEX KEY:			0002003074
		ORGANIZATION NAME:           	
		EIN:				871719733
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		144

	BUSINESS ADDRESS:	
		STREET 1:		3000 EL CAMINO REAL BUILDING 5 SUITE 450
		CITY:			PALO ALTO
		STATE:			CA
		ZIP:			94306
		BUSINESS PHONE:		(332) 242-8518

	MAIL ADDRESS:	
		STREET 1:		3000 EL CAMINO REAL BUILDING 5 SUITE 450
		CITY:			PALO ALTO
		STATE:			CA
		ZIP:			94306
</SEC-HEADER>
<DOCUMENT>
<TYPE>144
<SEQUENCE>1
<FILENAME>primary_doc.xml
<TEXT>
<XML>
<?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>0002003074</cik>
          <ccc>XXXXXXXX</ccc>
        </filerCredentials>
      </filer>
      <liveTestFlag>LIVE</liveTestFlag>



    </filerInfo>
  </headerData>
  <formData>
    <issuerInfo>
      <issuerCik>0001114995</issuerCik>
      <issuerName>IMPINJ INC</issuerName>
      <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>SYLEBRA CAPITAL LLC</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
      <relationshipsToIssuer>
        <relationshipToIssuer>See Remarks</relationshipToIssuer>
      </relationshipsToIssuer>
    </issuerInfo>
    <securitiesInformation>
      <securitiesClassTitle>COMMON STOCK</securitiesClassTitle>
      <brokerOrMarketmakerDetails>
        <name>Morgan Stanley &amp; Co. LLC </name>
        <address>
          <com:street1>1585 Broadway </com:street1>
          <com:city>New York</com:city>
          <com:stateOrCountry>NY</com:stateOrCountry>
          <com:zipCode>10036</com:zipCode>
        </address>
      </brokerOrMarketmakerDetails>
      <noOfUnitsSold>18427</noOfUnitsSold>
      <aggregateMarketValue>3077250.03</aggregateMarketValue>
      <noOfUnitsOutstanding>1600103</noOfUnitsOutstanding>
      <approxSaleDate>12/01/2025</approxSaleDate>
      <securitiesExchangeName>NASDAQ</securitiesExchangeName>
    </securitiesInformation>
    <securitiesInformation>
      <securitiesClassTitle>COMMON STOCK</securitiesClassTitle>
      <brokerOrMarketmakerDetails>
        <name>J.P. Morgan Securities LLC </name>
        <address>
          <com:street1>383 Madison</com:street1>
          <com:city> New York</com:city>
          <com:stateOrCountry>NY</com:stateOrCountry>
          <com:zipCode>10179</com:zipCode>
        </address>
      </brokerOrMarketmakerDetails>
      <noOfUnitsSold>4301</noOfUnitsSold>
      <aggregateMarketValue>719134.73</aggregateMarketValue>
      <noOfUnitsOutstanding>1595802</noOfUnitsOutstanding>
      <approxSaleDate>12/01/2025</approxSaleDate>
      <securitiesExchangeName>NASDAQ</securitiesExchangeName>
    </securitiesInformation>
    <securitiesInformation>
      <securitiesClassTitle>COMMON STOCK</securitiesClassTitle>
      <brokerOrMarketmakerDetails>
        <name>BOFA SECURITIES, INC </name>
        <address>
          <com:street1>One Bryant Park</com:street1>
          <com:city>New York</com:city>
          <com:stateOrCountry>NY</com:stateOrCountry>
          <com:zipCode>10036</com:zipCode>
        </address>
      </brokerOrMarketmakerDetails>
      <noOfUnitsSold>4252</noOfUnitsSold>
      <aggregateMarketValue>710038.16</aggregateMarketValue>
      <noOfUnitsOutstanding>1591550</noOfUnitsOutstanding>
      <approxSaleDate>12/01/2025</approxSaleDate>
      <securitiesExchangeName>NASDAQ</securitiesExchangeName>
    </securitiesInformation>
    <securitiesInformation>
      <securitiesClassTitle>COMMON STOCK</securitiesClassTitle>
      <brokerOrMarketmakerDetails>
        <name>Goldman Sachs &amp; Co. LLC </name>
        <address>
          <com:street1>200 West Street </com:street1>
          <com:city>New York</com:city>
          <com:stateOrCountry>NY</com:stateOrCountry>
          <com:zipCode>10282</com:zipCode>
        </address>
      </brokerOrMarketmakerDetails>
      <noOfUnitsSold>4078</noOfUnitsSold>
      <aggregateMarketValue>681134.07</aggregateMarketValue>
      <noOfUnitsOutstanding>1587472</noOfUnitsOutstanding>
      <approxSaleDate>12/01/2025</approxSaleDate>
      <securitiesExchangeName>NASDAQ</securitiesExchangeName>
    </securitiesInformation>
    <securitiesToBeSold>
      <securitiesClassTitle>COMMON STOCK</securitiesClassTitle>
      <acquiredDate>03/01/2018</acquiredDate>
      <natureOfAcquisitionTransaction>Open Market Purchases.Please refer to explanatory notes under the section of Remarks.</natureOfAcquisitionTransaction>
      <nameOfPersonfromWhomAcquired>Open Market Purchases.Please refer to explanatory notes under the section of Remarks.</nameOfPersonfromWhomAcquired>
      <isGiftTransaction>N</isGiftTransaction>
      <amountOfSecuritiesAcquired>31058</amountOfSecuritiesAcquired>
      <paymentDate>03/01/2018</paymentDate>
      <natureOfPayment>DVP - Cash. Please refer to explanatory notes under the section of Remarks.</natureOfPayment>
    </securitiesToBeSold>
    <nothingToReportFlagOnSecuritiesSoldInPast3Months>N</nothingToReportFlagOnSecuritiesSoldInPast3Months>
    <securitiesSoldInPast3Months>
      <sellerDetails>
        <name>Please see attached Appendixfor complete details</name>
        <address>
          <com:street1>See Appendix</com:street1>
          <com:city>See Appendix</com:city>
          <com:stateOrCountry>NY</com:stateOrCountry>
          <com:zipCode>10036</com:zipCode>
        </address>
      </sellerDetails>
      <securitiesClassTitle>See Appendix</securitiesClassTitle>
      <saleDate>09/10/2025</saleDate>
      <amountOfSecuritiesSold>300000</amountOfSecuritiesSold>
      <grossProceeds>58873670.10</grossProceeds>
    </securitiesSoldInPast3Months>
    <remarks>Please see attached Appendix for complete details ofsecurities of the Issuer sold during the past three months.Please note that the securities to be sold were acquired from Mar 2018 to Nov 2023 and the date of payment ranged from Mar 2018 to Nov 2023. The reporting person hereby undertakes to provide upon request to the SEC staff or the Issuer full information regarding the number of shares and prices at which the transactions were effected.These securities are held by other advisory clients of the Reporting Person. Daniel Gibson (Mr Gibson) is the sole member and the CIO of the Reporting Person and is a member of the board of directors of the Issuer. Reporting Person and Mr Gibson disclaim beneficial ownership ofthese securities,and this report shall not be deemed ana dmission that Reporting Person and Mr Gibson are the beneficial owners of such securities, except to the extent oftheir pecuniary interest, if any, therein.</remarks>
    <noticeSignature>
      <noticeDate>12/01/2025</noticeDate>
      <signature>Matthew Whitehead</signature>
    </noticeSignature>
  </formData>

</edgarSubmission>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
