<SEC-DOCUMENT>0000950170-24-135715.txt : 20241212
<SEC-HEADER>0000950170-24-135715.hdr.sgml : 20241212
<ACCEPTANCE-DATETIME>20241212145524
ACCESSION NUMBER:		0000950170-24-135715
CONFORMED SUBMISSION TYPE:	4/A
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20210706
FILED AS OF DATE:		20241212
DATE AS OF CHANGE:		20241212

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Gleason Todd R
		CENTRAL INDEX KEY:			0001571235
		ORGANIZATION NAME:           	

	FILING VALUES:
		FORM TYPE:		4/A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-07099
		FILM NUMBER:		241544421

	MAIL ADDRESS:	
		STREET 1:		5500 WAYZATA BLVD., SUITE 800
		CITY:			GOLDEN VALLEY
		STATE:			MN
		ZIP:			55416

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
		IRS NUMBER:				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/A
<SEQUENCE>1
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<DESCRIPTION>4/A
<TEXT>
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        <issuerName>CECO ENVIRONMENTAL CORP</issuerName>
        <issuerTradingSymbol>CECO</issuerTradingSymbol>
    </issuer>

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            <rptOwnerName>Gleason Todd R</rptOwnerName>
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            <rptOwnerStreet2>SUITE 800E</rptOwnerStreet2>
            <rptOwnerCity>ADDISON</rptOwnerCity>
            <rptOwnerState>TX</rptOwnerState>
            <rptOwnerZipCode>75001</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
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        <reportingOwnerRelationship>
            <isDirector>true</isDirector>
            <isOfficer>true</isOfficer>
            <isTenPercentOwner>false</isTenPercentOwner>
            <isOther>false</isOther>
            <officerTitle>Chief Executive Officer</officerTitle>
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    <footnotes>
        <footnote id="F1">Reflects shares withheld for net settlement to cover the tax liability for the vesting of restricted stock units, which withholding was not previously reported due to an administrative oversight.</footnote>
        <footnote id="F2">Reflects performance-based restricted stock units that were earned and settled in shares but omitted from the Form 4 filed on March 19, 2024 due to an administrative oversight.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ Kiril Kovachev as Attorney-in-Fact for Todd Gleason</signatureName>
        <signatureDate>2024-12-12</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
