<SEC-DOCUMENT>0001950047-25-007914.txt : 20251014
<SEC-HEADER>0001950047-25-007914.hdr.sgml : 20251014
<ACCEPTANCE-DATETIME>20251014074147
ACCESSION NUMBER:		0001950047-25-007914
CONFORMED SUBMISSION TYPE:	144
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20251014
DATE AS OF CHANGE:		20251014

SUBJECT COMPANY:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Ameresco, Inc.
		CENTRAL INDEX KEY:			0001488139
		STANDARD INDUSTRIAL CLASSIFICATION:	CONSTRUCTION SPECIAL TRADE CONTRACTORS [1700]
		ORGANIZATION NAME:           	05 Real Estate & Construction
		EIN:				043512838
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		144
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	001-34811
		FILM NUMBER:		251389665

	BUSINESS ADDRESS:	
		STREET 1:		111 SPEEN STREET
		CITY:			FRAMINGHAM
		STATE:			MA
		ZIP:			01701
		BUSINESS PHONE:		508-661-2200

	MAIL ADDRESS:	
		STREET 1:		111 SPEEN STREET
		CITY:			FRAMINGHAM
		STATE:			MA
		ZIP:			01701

REPORTING-OWNER:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Chiplock Mark
		CENTRAL INDEX KEY:			0001755243
		ORGANIZATION NAME:           	

	FILING VALUES:
		FORM TYPE:		144

	MAIL ADDRESS:	
		STREET 1:		C/O AMERESCO, INC.
		STREET 2:		111 SPEEN STREET, SUITE 410
		CITY:			FRAMINGHAM
		STATE:			MA
		ZIP:			01701
</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:ns2="http://www.sec.gov/edgar/common">
    <headerData>
        <submissionType>144</submissionType>
        <filerInfo>
            <filer>
                <filerCredentials>
                    <cik>0001755243</cik>
                    <ccc>XXXXXXXX</ccc>
                </filerCredentials>
            </filer>
            <liveTestFlag>LIVE</liveTestFlag>



        </filerInfo>
    </headerData>
    <formData>
        <issuerInfo>
            <issuerCik>0001488139</issuerCik>
            <issuerName>AMERESCO INC</issuerName>
            <secFileNumber>001-34811</secFileNumber>
            <issuerAddress>
                <ns2:street1>111 Speen Street, Suite 410</ns2:street1>
                <ns2:city>Framingham</ns2:city>
                <ns2:stateOrCountry>MA</ns2:stateOrCountry>
                <ns2:zipCode>01701</ns2:zipCode>
            </issuerAddress>
            <issuerContactPhone>5086612200</issuerContactPhone>
            <nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>MARK CHIPLOCK </nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
            <relationshipsToIssuer>
                <relationshipToIssuer>Officer</relationshipToIssuer>
            </relationshipsToIssuer>
        </issuerInfo>
        <securitiesInformation>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <brokerOrMarketmakerDetails>
                <name>Morgan Stanley Smith Barney LLC Executive Financial Services</name>
                <address>
                    <ns2:street1>1 New York Plaza</ns2:street1>
                    <ns2:street2>8th Floor</ns2:street2>
                    <ns2:city>New York</ns2:city>
                    <ns2:stateOrCountry>NY</ns2:stateOrCountry>
                    <ns2:zipCode>10004</ns2:zipCode>
                </address>
            </brokerOrMarketmakerDetails>
            <noOfUnitsSold>16799</noOfUnitsSold>
            <aggregateMarketValue>641385.82</aggregateMarketValue>
            <noOfUnitsOutstanding>34703659</noOfUnitsOutstanding>
            <approxSaleDate>10/13/2025</approxSaleDate>
            <securitiesExchangeName>NYSE</securitiesExchangeName>
        </securitiesInformation>
        <securitiesToBeSold>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <acquiredDate>10/13/2025</acquiredDate>
            <natureOfAcquisitionTransaction>Exercise of Stock Options</natureOfAcquisitionTransaction>
            <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
            <isGiftTransaction>N</isGiftTransaction>
            <amountOfSecuritiesAcquired>16799</amountOfSecuritiesAcquired>
            <paymentDate>10/13/2025</paymentDate>
            <natureOfPayment>Cash</natureOfPayment>
        </securitiesToBeSold>
        <nothingToReportFlagOnSecuritiesSoldInPast3Months>N</nothingToReportFlagOnSecuritiesSoldInPast3Months>
        <securitiesSoldInPast3Months>
            <sellerDetails>
                <name>10b5-1 Sales for MARK CHIPLOCK </name>
                <address>
                    <ns2:street1>111 Speen Street, Suite 410</ns2:street1>
                    <ns2:city>Framingham</ns2:city>
                    <ns2:stateOrCountry>MA</ns2:stateOrCountry>
                    <ns2:zipCode>01701</ns2:zipCode>
                </address>
            </sellerDetails>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <saleDate>10/09/2025</saleDate>
            <amountOfSecuritiesSold>7100</amountOfSecuritiesSold>
            <grossProceeds>283783.26</grossProceeds>
        </securitiesSoldInPast3Months>
        <securitiesSoldInPast3Months>
            <sellerDetails>
                <name>10b5-1 Sales for MARK CHIPLOCK </name>
                <address>
                    <ns2:street1>111 Speen Street, Suite 410</ns2:street1>
                    <ns2:city>Framingham</ns2:city>
                    <ns2:stateOrCountry>MA</ns2:stateOrCountry>
                    <ns2:zipCode>01701</ns2:zipCode>
                </address>
            </sellerDetails>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <saleDate>10/08/2025</saleDate>
            <amountOfSecuritiesSold>3800</amountOfSecuritiesSold>
            <grossProceeds>151051.90</grossProceeds>
        </securitiesSoldInPast3Months>
        <securitiesSoldInPast3Months>
            <sellerDetails>
                <name>10b5-1 Sales for MARK CHIPLOCK </name>
                <address>
                    <ns2:street1>111 Speen Street, Suite 410</ns2:street1>
                    <ns2:city>Framingham</ns2:city>
                    <ns2:stateOrCountry>MA</ns2:stateOrCountry>
                    <ns2:zipCode>01701</ns2:zipCode>
                </address>
            </sellerDetails>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <saleDate>10/07/2025</saleDate>
            <amountOfSecuritiesSold>5900</amountOfSecuritiesSold>
            <grossProceeds>233134.37</grossProceeds>
        </securitiesSoldInPast3Months>
        <securitiesSoldInPast3Months>
            <sellerDetails>
                <name>10b5-1 Sales for MARK CHIPLOCK </name>
                <address>
                    <ns2:street1>111 Speen Street, Suite 410</ns2:street1>
                    <ns2:city>Framingham</ns2:city>
                    <ns2:stateOrCountry>MA</ns2:stateOrCountry>
                    <ns2:zipCode>01701</ns2:zipCode>
                </address>
            </sellerDetails>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <saleDate>10/06/2025</saleDate>
            <amountOfSecuritiesSold>5900</amountOfSecuritiesSold>
            <grossProceeds>229628.00</grossProceeds>
        </securitiesSoldInPast3Months>
        <securitiesSoldInPast3Months>
            <sellerDetails>
                <name>10b5-1 Sales for MARK CHIPLOCK </name>
                <address>
                    <ns2:street1>111 Speen Street, Suite 410</ns2:street1>
                    <ns2:city>Framingham</ns2:city>
                    <ns2:stateOrCountry>MA</ns2:stateOrCountry>
                    <ns2:zipCode>01701</ns2:zipCode>
                </address>
            </sellerDetails>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <saleDate>10/01/2025</saleDate>
            <amountOfSecuritiesSold>5602</amountOfSecuritiesSold>
            <grossProceeds>212595.90</grossProceeds>
        </securitiesSoldInPast3Months>
        <securitiesSoldInPast3Months>
            <sellerDetails>
                <name>MARK CHIPLOCK</name>
                <address>
                    <ns2:street1>111 Speen Street, Suite 410</ns2:street1>
                    <ns2:city>Framingham</ns2:city>
                    <ns2:stateOrCountry>MA</ns2:stateOrCountry>
                    <ns2:zipCode>01701</ns2:zipCode>
                </address>
            </sellerDetails>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <saleDate>09/15/2025</saleDate>
            <amountOfSecuritiesSold>269</amountOfSecuritiesSold>
            <grossProceeds>7532.00</grossProceeds>
        </securitiesSoldInPast3Months>
        <remarks>Sales that were executed on October 13, 2025 are being reported on this Form 144 filed on October 14, 2025 given the EDGAR system was not accepting filings on October 13, 2025 in observance of the federal holiday.</remarks>
        <noticeSignature>
            <noticeDate>10/13/2025</noticeDate>
            <planAdoptionDates>
                <planAdoptionDate>06/05/2025</planAdoptionDate>
            </planAdoptionDates>
            <signature>/s/ Mark Chiplock</signature>
        </noticeSignature>
    </formData>
</edgarSubmission>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
