<SEC-DOCUMENT>0001959173-25-000381.txt : 20250121
<SEC-HEADER>0001959173-25-000381.hdr.sgml : 20250121
<ACCEPTANCE-DATETIME>20250121155104
ACCESSION NUMBER:		0001959173-25-000381
CONFORMED SUBMISSION TYPE:	144
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20250121
DATE AS OF CHANGE:		20250121

SUBJECT COMPANY:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			ONTO INNOVATION INC.
		CENTRAL INDEX KEY:			0000704532
		STANDARD INDUSTRIAL CLASSIFICATION:	MEASURING & CONTROLLING DEVICES, NEC [3829]
		ORGANIZATION NAME:           	08 Industrial Applications and Services
		IRS NUMBER:				942276314
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1226

	FILING VALUES:
		FORM TYPE:		144
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	001-39110
		FILM NUMBER:		25542416

	BUSINESS ADDRESS:	
		STREET 1:		16 JONSPIN ROAD
		CITY:			WILMINGTON
		STATE:			MA
		ZIP:			01887
		BUSINESS PHONE:		9782536200

	MAIL ADDRESS:	
		STREET 1:		16 JONSPIN ROAD
		CITY:			WILMINGTON
		STATE:			MA
		ZIP:			01887

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	Onto Innovation Inc.
		DATE OF NAME CHANGE:	20191025

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	NANOMETRICS INC
		DATE OF NAME CHANGE:	19920703

REPORTING-OWNER:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Plisinski Michael P
		CENTRAL INDEX KEY:			0001325550
		ORGANIZATION NAME:           	

	FILING VALUES:
		FORM TYPE:		144

	MAIL ADDRESS:	
		STREET 1:		C/O ONTO INNOVATION, INC.
		STREET 2:		16 JONSPIN ROAD
		CITY:			WILMINGTON
		STATE:			MA
		ZIP:			01887
</SEC-HEADER>
<DOCUMENT>
<TYPE>144
<SEQUENCE>1
<FILENAME>primary_doc.xml
<TEXT>
<XML>
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  <headerData>
    <submissionType>144</submissionType>
    <filerInfo>
      <filer>
        <filerCredentials>
          <cik>0001325550</cik>
          <ccc>XXXXXXXX</ccc>
        </filerCredentials>
      </filer>
      <liveTestFlag>LIVE</liveTestFlag>


    </filerInfo>
  </headerData>
  <formData>
    <issuerInfo>
      <issuerCik>0000704532</issuerCik>
      <issuerName>ONTO INNOVATION INC.</issuerName>
      <secFileNumber>001-39110</secFileNumber>
      <issuerAddress>
        <com:street1>16 JONSPIN ROAD</com:street1>
        <com:city>WILMINGTON</com:city>
        <com:stateOrCountry>MA</com:stateOrCountry>
        <com:zipCode>01887</com:zipCode>
      </issuerAddress>
      <issuerContactPhone>9782536200</issuerContactPhone>
      <nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>Plisinski Michael P</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
      <relationshipsToIssuer>
        <relationshipToIssuer>Officer</relationshipToIssuer>
      </relationshipsToIssuer>
    </issuerInfo>
    <securitiesInformation>
      <securitiesClassTitle>common</securitiesClassTitle>
      <brokerOrMarketmakerDetails>
        <name>Fidelity Brokerage Services LLC</name>
        <address>
          <com:street1>245 Summer Street</com:street1>
          <com:city>Boston</com:city>
          <com:stateOrCountry>MA</com:stateOrCountry>
          <com:zipCode>02110</com:zipCode>
        </address>
      </brokerOrMarketmakerDetails>
      <noOfUnitsSold>35000</noOfUnitsSold>
      <aggregateMarketValue>7671808.07</aggregateMarketValue>
      <noOfUnitsOutstanding>49391299</noOfUnitsOutstanding>
      <approxSaleDate>01/21/2025</approxSaleDate>
      <securitiesExchangeName>NYSE</securitiesExchangeName>
    </securitiesInformation>
    <securitiesToBeSold>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <acquiredDate>11/09/2018</acquiredDate>
      <natureOfAcquisitionTransaction>Compensation</natureOfAcquisitionTransaction>
      <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
      <isGiftTransaction>N</isGiftTransaction>
      <amountOfSecuritiesAcquired>11954</amountOfSecuritiesAcquired>
      <paymentDate>11/09/2018</paymentDate>
      <natureOfPayment>N/A</natureOfPayment>
    </securitiesToBeSold>
    <securitiesToBeSold>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <acquiredDate>10/01/2016</acquiredDate>
      <natureOfAcquisitionTransaction>Compensation</natureOfAcquisitionTransaction>
      <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
      <isGiftTransaction>N</isGiftTransaction>
      <amountOfSecuritiesAcquired>773</amountOfSecuritiesAcquired>
      <paymentDate>10/01/2016</paymentDate>
      <natureOfPayment>N/A</natureOfPayment>
    </securitiesToBeSold>
    <securitiesToBeSold>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <acquiredDate>02/22/2016</acquiredDate>
      <natureOfAcquisitionTransaction>Compensation</natureOfAcquisitionTransaction>
      <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
      <isGiftTransaction>N</isGiftTransaction>
      <amountOfSecuritiesAcquired>1220</amountOfSecuritiesAcquired>
      <paymentDate>02/22/2016</paymentDate>
      <natureOfPayment>N/A</natureOfPayment>
    </securitiesToBeSold>
    <securitiesToBeSold>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <acquiredDate>02/19/2016</acquiredDate>
      <natureOfAcquisitionTransaction>Compensation</natureOfAcquisitionTransaction>
      <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
      <isGiftTransaction>N</isGiftTransaction>
      <amountOfSecuritiesAcquired>2640</amountOfSecuritiesAcquired>
      <paymentDate>02/19/2016</paymentDate>
      <natureOfPayment>N/A</natureOfPayment>
    </securitiesToBeSold>
    <securitiesToBeSold>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <acquiredDate>01/31/2016</acquiredDate>
      <natureOfAcquisitionTransaction>Compensation</natureOfAcquisitionTransaction>
      <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
      <isGiftTransaction>N</isGiftTransaction>
      <amountOfSecuritiesAcquired>1547</amountOfSecuritiesAcquired>
      <paymentDate>01/31/2016</paymentDate>
      <natureOfPayment>N/A</natureOfPayment>
    </securitiesToBeSold>
    <securitiesToBeSold>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <acquiredDate>01/28/2016</acquiredDate>
      <natureOfAcquisitionTransaction>Compensation</natureOfAcquisitionTransaction>
      <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
      <isGiftTransaction>N</isGiftTransaction>
      <amountOfSecuritiesAcquired>2168</amountOfSecuritiesAcquired>
      <paymentDate>01/28/2016</paymentDate>
      <natureOfPayment>N/A</natureOfPayment>
    </securitiesToBeSold>
    <securitiesToBeSold>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <acquiredDate>01/26/2016</acquiredDate>
      <natureOfAcquisitionTransaction>Compensation</natureOfAcquisitionTransaction>
      <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
      <isGiftTransaction>N</isGiftTransaction>
      <amountOfSecuritiesAcquired>1394</amountOfSecuritiesAcquired>
      <paymentDate>01/26/2016</paymentDate>
      <natureOfPayment>N/A</natureOfPayment>
    </securitiesToBeSold>
    <securitiesToBeSold>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <acquiredDate>01/25/2016</acquiredDate>
      <natureOfAcquisitionTransaction>Compensation</natureOfAcquisitionTransaction>
      <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
      <isGiftTransaction>N</isGiftTransaction>
      <amountOfSecuritiesAcquired>1650</amountOfSecuritiesAcquired>
      <paymentDate>01/25/2016</paymentDate>
      <natureOfPayment>N/A</natureOfPayment>
    </securitiesToBeSold>
    <securitiesToBeSold>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <acquiredDate>10/01/2015</acquiredDate>
      <natureOfAcquisitionTransaction>Compensation</natureOfAcquisitionTransaction>
      <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
      <isGiftTransaction>N</isGiftTransaction>
      <amountOfSecuritiesAcquired>773</amountOfSecuritiesAcquired>
      <paymentDate>10/01/2015</paymentDate>
      <natureOfPayment>N/A</natureOfPayment>
    </securitiesToBeSold>
    <securitiesToBeSold>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <acquiredDate>02/22/2015</acquiredDate>
      <natureOfAcquisitionTransaction>Compensation</natureOfAcquisitionTransaction>
      <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
      <isGiftTransaction>N</isGiftTransaction>
      <amountOfSecuritiesAcquired>1205</amountOfSecuritiesAcquired>
      <paymentDate>02/22/2015</paymentDate>
      <natureOfPayment>N/A</natureOfPayment>
    </securitiesToBeSold>
    <securitiesToBeSold>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <acquiredDate>02/20/2015</acquiredDate>
      <natureOfAcquisitionTransaction>Compensation</natureOfAcquisitionTransaction>
      <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
      <isGiftTransaction>N</isGiftTransaction>
      <amountOfSecuritiesAcquired>722</amountOfSecuritiesAcquired>
      <paymentDate>02/20/2015</paymentDate>
      <natureOfPayment>N/A</natureOfPayment>
    </securitiesToBeSold>
    <securitiesToBeSold>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <acquiredDate>01/31/2015</acquiredDate>
      <natureOfAcquisitionTransaction>Compensation</natureOfAcquisitionTransaction>
      <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
      <isGiftTransaction>N</isGiftTransaction>
      <amountOfSecuritiesAcquired>750</amountOfSecuritiesAcquired>
      <paymentDate>01/31/2015</paymentDate>
      <natureOfPayment>N/A</natureOfPayment>
    </securitiesToBeSold>
    <securitiesToBeSold>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <acquiredDate>01/26/2015</acquiredDate>
      <natureOfAcquisitionTransaction>Compensation</natureOfAcquisitionTransaction>
      <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
      <isGiftTransaction>N</isGiftTransaction>
      <amountOfSecuritiesAcquired>1393</amountOfSecuritiesAcquired>
      <paymentDate>01/26/2015</paymentDate>
      <natureOfPayment>N/A</natureOfPayment>
    </securitiesToBeSold>
    <securitiesToBeSold>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <acquiredDate>01/25/2015</acquiredDate>
      <natureOfAcquisitionTransaction>Compensation</natureOfAcquisitionTransaction>
      <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
      <isGiftTransaction>N</isGiftTransaction>
      <amountOfSecuritiesAcquired>1648</amountOfSecuritiesAcquired>
      <paymentDate>01/25/2015</paymentDate>
      <natureOfPayment>N/A</natureOfPayment>
    </securitiesToBeSold>
    <securitiesToBeSold>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <acquiredDate>02/22/2014</acquiredDate>
      <natureOfAcquisitionTransaction>Compensation</natureOfAcquisitionTransaction>
      <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
      <isGiftTransaction>N</isGiftTransaction>
      <amountOfSecuritiesAcquired>1005</amountOfSecuritiesAcquired>
      <paymentDate>02/22/2014</paymentDate>
      <natureOfPayment>N/A</natureOfPayment>
    </securitiesToBeSold>
    <securitiesToBeSold>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <acquiredDate>02/10/2014</acquiredDate>
      <natureOfAcquisitionTransaction>Compensation</natureOfAcquisitionTransaction>
      <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
      <isGiftTransaction>N</isGiftTransaction>
      <amountOfSecuritiesAcquired>4158</amountOfSecuritiesAcquired>
      <paymentDate>02/10/2014</paymentDate>
      <natureOfPayment>N/A</natureOfPayment>
    </securitiesToBeSold>
    <nothingToReportFlagOnSecuritiesSoldInPast3Months>N</nothingToReportFlagOnSecuritiesSoldInPast3Months>
    <securitiesSoldInPast3Months>
      <sellerDetails>
        <name>Michael Plisinski c/o ONTO INNOVATION INC.</name>
        <address>
          <com:street1>16 JONSPIN ROAD</com:street1>
          <com:city>WILMINGTON</com:city>
          <com:stateOrCountry>MA</com:stateOrCountry>
          <com:zipCode>01887</com:zipCode>
        </address>
      </sellerDetails>
      <securitiesClassTitle>Common Stock</securitiesClassTitle>
      <saleDate>01/14/2025</saleDate>
      <amountOfSecuritiesSold>20000</amountOfSecuritiesSold>
      <grossProceeds>4003917.08</grossProceeds>
    </securitiesSoldInPast3Months>
    <securitiesSoldInPast3Months>
      <sellerDetails>
        <name>Michael Plisinski c/o ONTO INNOVATION INC.</name>
        <address>
          <com:street1>16 JONSPIN ROAD,</com:street1>
          <com:city>WILMINGTON</com:city>
          <com:stateOrCountry>MA</com:stateOrCountry>
          <com:zipCode>01887</com:zipCode>
        </address>
      </sellerDetails>
      <securitiesClassTitle>Common Stock</securitiesClassTitle>
      <saleDate>01/16/2025</saleDate>
      <amountOfSecuritiesSold>30000</amountOfSecuritiesSold>
      <grossProceeds>6337183.73</grossProceeds>
    </securitiesSoldInPast3Months>
    <noticeSignature>
      <noticeDate>01/21/2025</noticeDate>
      <planAdoptionDates>
        <planAdoptionDate>08/26/2024</planAdoptionDate>
      </planAdoptionDates>
      <signature>/s/ Audrey Skillern as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for Michael Plisinski</signature>
    </noticeSignature>
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</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
