<SEC-DOCUMENT>0001790695-25-000007.txt : 20251112
<SEC-HEADER>0001790695-25-000007.hdr.sgml : 20251112
<ACCEPTANCE-DATETIME>20251112125415
ACCESSION NUMBER:		0001790695-25-000007
CONFORMED SUBMISSION TYPE:	144
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20251112
DATE AS OF CHANGE:		20251112

SUBJECT COMPANY:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			COGENT COMMUNICATIONS HOLDINGS, INC.
		CENTRAL INDEX KEY:			0001158324
		STANDARD INDUSTRIAL CLASSIFICATION:	COMMUNICATION SERVICES, NEC [4899]
		ORGANIZATION NAME:           	06 Technology
		EIN:				522337274
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		144
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	000-51829
		FILM NUMBER:		251471208

	BUSINESS ADDRESS:	
		STREET 1:		2450 N STREET, NW
		CITY:			WASHINGTON
		STATE:			DC
		ZIP:			20037
		BUSINESS PHONE:		2022954200

	MAIL ADDRESS:	
		STREET 1:		2450 N STREET, NW
		CITY:			WASHINGTON
		STATE:			DC
		ZIP:			20037

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	COGENT COMMUNICATIONS GROUP INC
		DATE OF NAME CHANGE:	20010828

REPORTING-OWNER:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Kennedy Sheryl Lynn
		CENTRAL INDEX KEY:			0001790695
		ORGANIZATION NAME:           	

	FILING VALUES:
		FORM TYPE:		144

	MAIL ADDRESS:	
		STREET 1:		C/O COGENT COMMUNICATIONS HOLDINGS, INC.
		STREET 2:		2450 N STREET, N.W.
		CITY:			WASHINGTON
		STATE:			DC
		ZIP:			20037
</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>0001790695</cik>
                    <ccc>XXXXXXXX</ccc>
                </filerCredentials>
            </filer>
        <liveTestFlag>LIVE</liveTestFlag>




                </filerInfo>
    </headerData>

     <formData>
        <issuerInfo>
            <issuerCik>0001158324</issuerCik>
			<issuerName>COGENT COMMUNICATIONS HOLDINGS, INC.</issuerName>


			    <secFileNumber>000-51829</secFileNumber>


			<issuerAddress>
				<com:street1>2450 N ST NW</com:street1>
                				<com:street2>4TH FLOOR</com:street2>
                				<com:city>WASHINGTON</com:city>
				<com:stateOrCountry>DC</com:stateOrCountry>
				<com:zipCode>20037</com:zipCode>
			</issuerAddress>

			<issuerContactPhone>2022954274</issuerContactPhone>
			<nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>Sheryl Lynn Kennedy </nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>

			<relationshipsToIssuer>
                                				    <relationshipToIssuer>Director</relationshipToIssuer>

			</relationshipsToIssuer>
		</issuerInfo>

				          <securitiesInformation>
			<securitiesClassTitle>common stock</securitiesClassTitle>
			<brokerOrMarketmakerDetails>
				<name>RBC DOMINION SECURITIES INC.</name>
				<address>
				<com:street1>181 Bay St</com:street1>
                				<com:street2>Suite 2200</com:street2>
                				<com:city> Toronto</com:city>
				<com:stateOrCountry>A6</com:stateOrCountry>
				<com:zipCode>M5J 2T3</com:zipCode>
				</address>
			</brokerOrMarketmakerDetails>
			<noOfUnitsSold>2400</noOfUnitsSold>
			<aggregateMarketValue>51000</aggregateMarketValue>
			<noOfUnitsOutstanding>49121159</noOfUnitsOutstanding>
			<approxSaleDate>11/11/2025</approxSaleDate>
			<securitiesExchangeName>NASDAQ</securitiesExchangeName>
		</securitiesInformation>

    		       <securitiesToBeSold>
         <securitiesClassTitle>common stock</securitiesClassTitle>
         <acquiredDate>04/01/2024</acquiredDate>
         <natureOfAcquisitionTransaction>Director Compensation</natureOfAcquisitionTransaction>
                  <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
                  <isGiftTransaction>N</isGiftTransaction>
		          <amountOfSecuritiesAcquired>203</amountOfSecuritiesAcquired>
                  <paymentDate>04/01/2024</paymentDate>
                  <natureOfPayment>None</natureOfPayment>
      </securitiesToBeSold>
             <securitiesToBeSold>
         <securitiesClassTitle>common stock</securitiesClassTitle>
         <acquiredDate>07/01/2024</acquiredDate>
         <natureOfAcquisitionTransaction>Director Compensation</natureOfAcquisitionTransaction>
                  <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
                  <isGiftTransaction>N</isGiftTransaction>
		          <amountOfSecuritiesAcquired>1675</amountOfSecuritiesAcquired>
                  <paymentDate>07/01/2024</paymentDate>
                  <natureOfPayment>None</natureOfPayment>
      </securitiesToBeSold>
             <securitiesToBeSold>
         <securitiesClassTitle>common stock</securitiesClassTitle>
         <acquiredDate>10/01/2024</acquiredDate>
         <natureOfAcquisitionTransaction>Director Compensation</natureOfAcquisitionTransaction>
                  <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
                  <isGiftTransaction>N</isGiftTransaction>
		          <amountOfSecuritiesAcquired>522</amountOfSecuritiesAcquired>
                  <paymentDate>10/01/2024</paymentDate>
                  <natureOfPayment>None</natureOfPayment>
      </securitiesToBeSold>

    <nothingToReportFlagOnSecuritiesSoldInPast3Months>N</nothingToReportFlagOnSecuritiesSoldInPast3Months>


     <securitiesSoldInPast3Months>
         <sellerDetails>
            <name>RBC DOMINION SECURITIES INC</name>
            <address>
               <com:street1>181 Bay St</com:street1>
                              <com:street2>Suite 2200</com:street2>
                              <com:city>Toronto</com:city>
               <com:stateOrCountry>A6</com:stateOrCountry>
               <com:zipCode>M5J 2T3</com:zipCode>
            </address>
         </sellerDetails>
         <securitiesClassTitle>common stock</securitiesClassTitle>
         <saleDate>08/21/2025</saleDate>
         <amountOfSecuritiesSold>2000</amountOfSecuritiesSold>
         <grossProceeds>72700</grossProceeds>
      </securitiesSoldInPast3Months>


        <noticeSignature>
            <noticeDate>11/11/2025</noticeDate>
                        <signature>  /s/ Sheryl Lynn Kennedy</signature>
        </noticeSignature>
	</formData>
    </edgarSubmission>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
