Todd R Gleason Form 4/A CECO ENVIRONMENTAL / Todd R Gleason ownership change

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

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Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

1. Name and Address of Reporting Person^*

Gleason Todd R

(Last) (First) (Middle)

5080 SPECTRUM DRIVE

SUITE 800E

(Street)

ADDISON TX 75001

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
CECO ENVIRONMENTAL CORP [ CECO ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director	10% Owner
X	Officer (give title below)	Other (specify below)
Chief Executive Officer

3. Date of Earliest Transaction (Month/Day/Year)
07/06/2021

4. If Amendment, Date of Original Filed (Month/Day/Year)
03/19/2024

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	07/06/2021		F(1)		5,743	D	$7.12	179,222	D
Common Stock	04/01/2022		F(1)		2,726	D	$5.46	176,496	D
Common Stock	07/06/2022		F(1)		5,743	D	$5.97	170,753	D
Common Stock	03/07/2023		F(1)		3,803	D	$14.99	166,950	D
Common Stock	04/01/2023		F(1)		3,617	D	$13.99	163,333	D
Common Stock	07/06/2023		F(1)		9,281	D	$12.83	154,052	D
Common Stock	03/07/2024		F(1)		3,788	D	$20.56	150,264	D
Common Stock	03/15/2024		A		76,337	A	$0	226,601	D
Common Stock	03/15/2024		A(2)		128,678	A	$0	355,279	D
Common Stock	03/15/2024		F(1)		50,635	D	$21.44	304,644	D
Common Stock	03/31/2024		F(1)		2,110	D	$23.02	302,534	D
Common Stock	04/01/2024		F(1)		3,617	D	$23	298,917	D
Common Stock	07/06/2024		F(1)		9,281	D	$28.46	289,636	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. 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.

2. 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.

	/s/ Kiril Kovachev as Attorney-in-Fact for Todd Gleason	12/12/2024
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
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