<SEC-DOCUMENT>0001193125-26-203739.txt : 20260504
<SEC-HEADER>0001193125-26-203739.hdr.sgml : 20260504
<ACCEPTANCE-DATETIME>20260504150419
ACCESSION NUMBER:		0001193125-26-203739
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		2
CONFORMED PERIOD OF REPORT:	20260501
FILED AS OF DATE:		20260504
DATE AS OF CHANGE:		20260504

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Nanda Munish
		CENTRAL INDEX KEY:			0001532274
		ORGANIZATION NAME:           	

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-07099
		FILM NUMBER:		26936926

	MAIL ADDRESS:	
		STREET 1:		1133 WESTCHESTER AVENUE
		STREET 2:		C/O ITT CORPORATION
		CITY:			WHITE PLAINS
		STATE:			NY
		ZIP:			10604

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			CECO ENVIRONMENTAL CORP
		CENTRAL INDEX KEY:			0000003197
		STANDARD INDUSTRIAL CLASSIFICATION:	INDUSTRIAL & COMMERCIAL FANS & BLOWERS & AIR PURIFYING EQUIP [3564]
		ORGANIZATION NAME:           	06 Technology
		EIN:				132566064
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		5080 SPECTRUM DRIVE
		STREET 2:		SUITE 800E
		CITY:			ADDISON
		STATE:			TX
		ZIP:			75001
		BUSINESS PHONE:		(513) 458-2600

	MAIL ADDRESS:	
		STREET 1:		5080 SPECTRUM DRIVE
		STREET 2:		SUITE 800E
		CITY:			ADDISON
		STATE:			TX
		ZIP:			75001

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	API ENTERPRISES INC
		DATE OF NAME CHANGE:	19920703

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	ALARM PRODUCTS INTERNATIONAL INC
		DATE OF NAME CHANGE:	19851210
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>ownership.xml
<DESCRIPTION>4
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0609</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2026-05-01</periodOfReport>

    <notSubjectToSection16>false</notSubjectToSection16>

    <issuer>
        <issuerCik>0000003197</issuerCik>
        <issuerName>CECO ENVIRONMENTAL CORP</issuerName>
        <issuerTradingSymbol>CECO</issuerTradingSymbol>
        <issuerForeignTradingSymbol></issuerForeignTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001532274</rptOwnerCik>
            <rptOwnerName>Nanda Munish</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerNonUSAddressFlag>false</rptOwnerNonUSAddressFlag>
            <rptOwnerStreet1>5080 SPECTRUM DRIVE</rptOwnerStreet1>
            <rptOwnerStreet2>SUITE 800E</rptOwnerStreet2>
            <rptOwnerCity>ADDISON</rptOwnerCity>
            <rptOwnerState>TX</rptOwnerState>
            <rptOwnerZipCode>75001</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>true</isDirector>
            <isOfficer>false</isOfficer>
            <isTenPercentOwner>false</isTenPercentOwner>
            <isOther>false</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <aff10b5One>false</aff10b5One>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2026-05-01</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>false</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>11218</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>74.0012</value>
                    <footnoteId id="F1"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>62031</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">Price reflects the weighted average sale price for multiple transactions that ranged from $74.00 to $74.02 per share.  The Reporting Person undertakes to provide, upon request by the Commission Staff, the Issuer or a security holder of the Issuer, full information regarding the number of shares purchased at each separate price.</footnote>
    </footnotes>

    <remarks>Exhibit 24: Power of Attorney</remarks>

    <ownerSignature>
        <signatureName>/s/ Kiril Kovachev as Attorney-in-Fact for Munish Nanda</signatureName>
        <signatureDate>2026-05-04</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-24.1
<SEQUENCE>2
<FILENAME>ceco-ex24_1.htm
<DESCRIPTION>EX-24.1
<TEXT>
<!-- DFIN ActiveDisclosure (SM) HTML Document - http://www.dfinsolutions.com/ --><!-- Creation Date :2026-05-03T20:58:43.6277+00:00 --><!-- Copyright (c) 2026 Donnelley Financial Solutions, Inc. All Rights Reserved. -->
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  <title>EX-24.1</title>
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 <body style="padding:8px;margin:auto!important;z-index:0;-webkit-text-size-adjust:100%;position:relative;">
  <div style="z-index:2;min-height:1in;position:relative;"></div>
  <div class="main-content-container" style="z-index:5;position:relative;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:center;"><font style="text-transform:uppercase;color:#000000;white-space:pre-wrap;font-weight:bold;font-size:11pt;font-family:'Calibri',sans-serif;font-kerning:none;min-width:fit-content;">CECO Environmental Corp.</font></p><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:8pt;text-align:center;"><font style="color:#000000;white-space:pre-wrap;font-weight:bold;font-size:11pt;font-family:'Calibri',sans-serif;font-kerning:none;min-width:fit-content;">LIMITED POWER OF ATTORNEY FOR SECTION 16 REPORTING OBLIGATIONS</font></p><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:8pt;text-align:left;"><font style="color:#000000;white-space:pre-wrap;font-size:11pt;font-family:'Calibri',sans-serif;font-kerning:none;min-width:fit-content;">	Know all by these presents, that the undersigned hereby constitutes and appoints each of Kiril Kovachev, Alyson Gregory Richter, and Peter Johansson, or any one of them acting singly and with full power of substitution, the undersigned's true and lawful attorney-in-fact to:</font></p><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:8pt;text-align:left;"><font style="color:#000000;white-space:pre-wrap;font-size:11pt;font-family:'Calibri',sans-serif;font-kerning:none;min-width:fit-content;">(1)	execute for and on behalf of the undersigned, in the undersigned's capacity as a director of CECO Environmental Corp., a Delaware corporation (the &#34;Company&#34;), Forms 3, 4 and 5 (and any amendments thereto) in accordance with Section 16(a) of the Securities Exchange Act of 1934, as amended (the &#34;Exchange Act&#34;), and the rules thereunder;</font></p><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:8pt;text-align:left;"><font style="color:#000000;white-space:pre-wrap;font-size:11pt;font-family:'Calibri',sans-serif;font-kerning:none;min-width:fit-content;">(2)	do and perform any and all acts for and on behalf of the undersigned which may be necessary or desirable to complete and execute any such Form 3, 4 or 5, complete and execute any amendments thereto, and timely file such form with the U.S. Securities and Exchange Commission (the &#34;SEC&#34;) and any securities exchange or similar authority;</font></p><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:8pt;text-align:left;"><font style="color:#000000;white-space:pre-wrap;font-size:11pt;font-family:'Calibri',sans-serif;font-kerning:none;min-width:fit-content;">(3)	execute for and on behalf of the undersigned any and all notices pursuant to Rule 144 under the Securities Act of 1933 with respect to sales of shares of common stock, par value $0.01 per share, or other securities, of the Company, including, without limitation, all notices of proposed sale on Form 144; and</font></p><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:8pt;text-align:left;"><font style="color:#000000;white-space:pre-wrap;font-size:11pt;font-family:'Calibri',sans-serif;font-kerning:none;min-width:fit-content;">(4)     take any other action in connection with the foregoing which, in the opinion of such attorney-in-fact, may be of benefit to, in the best interest of, or legally required by or for, the undersigned, it being understood that the documents executed by such attorney-in-fact on behalf of the undersigned pursuant to this Limited Power of Attorney shall be in such form and shall contain such information and disclosure as such attorney-in-fact may approve in such attorney-in- fact's discretion.</font></p><p style="text-indent:6.667%;font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:8pt;text-align:left;"><font style="color:#000000;white-space:pre-wrap;font-size:11pt;font-family:'Calibri',sans-serif;font-kerning:none;min-width:fit-content;">The undersigned hereby grants to each such attorney-in-fact full power and authority to do and perform any and every act and thing whatsoever required, necessary or  proper to be done in the exercise of any of the rights and powers herein granted, as fully to all intents and purposes as the undersigned might or could do if personally present, with full power of substitution or revocation, hereby ratifying and confirming all that such attorney-in-fact, or such attorney-in-fact's substitute or substitutes, shall lawfully do or cause to be done by virtue of this Limited Power of Attorney and the rights and powers herein granted.</font></p><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:8pt;text-align:left;"><font style="color:#000000;white-space:pre-wrap;font-size:11pt;font-family:'Calibri',sans-serif;font-kerning:none;min-width:fit-content;">            The undersigned acknowledges that the foregoing attorneys-in-fact, in serving in such capacity at the request and on the behalf of the undersigned, are not assuming, nor is the Company assuming, any of the undersigned's responsibilities to comply with, or any liability for the failure to comply with, any provision of Section 16 of the Exchange Act.</font></p><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:8pt;text-align:left;"><font style="color:#000000;white-space:pre-wrap;font-size:11pt;font-family:'Calibri',sans-serif;font-kerning:none;min-width:fit-content;">            This Limited Power of Attorney shall be governed by and construed in accordance with the laws of the State of Delaware.</font><font style="color:#000000;white-space:pre-wrap;font-size:11pt;font-family:'Calibri',sans-serif;font-kerning:none;min-width:fit-content;">  </font></p><p style="text-indent:6.667%;font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:8pt;text-align:left;"><font style="color:#000000;white-space:pre-wrap;font-size:11pt;font-family:'Calibri',sans-serif;font-kerning:none;min-width:fit-content;">This Limited Power of Attorney shall remain in full force and effect until the undersigned is no longer required to file Forms 3, 4 or 5 with respect to the undersigned's holdings of and transactions in securities issued by the Company, unless earlier revoked by the undersigned in a signed writing delivered to each of the foregoing attorneys-in-fact.</font></p></div>
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</SEC-DOCUMENT>
