# EDGAR Filing Document

**Accession Number:** 0001571235
**File Stem:** 0001193125-26-098095
**Filing Date:** 2026-3
**Character Count:** 12204
**Document Hash:** 9515e9ce93f74d0edf3e25a2d6956a7a
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001193125-26-098095.hdr.sgml**: 20260309

**ACCESSION NUMBER**: 0001193125-26-098095

**CONFORMED SUBMISSION TYPE**: 4

**PUBLIC DOCUMENT COUNT**: 2

**CONFORMED PERIOD OF REPORT**: 20260307

**FILED AS OF DATE**: 20260309

**DATE AS OF CHANGE**: 20260309

**REPORTING-OWNER**: 

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

**ORGANIZATION NAME:**

**FILING VALUES:**
- **FORM TYPE:** 4
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 000-07099
- **FILM NUMBER:** 26734071

**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
- **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

## Exhibit 24.1

**CECO ENVIRONMENTAL CORP.**

**LIMITED POWER OF ATTORNEY FOR SECTION 16 REPORTING OBLIGATIONS**

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:

(1) execute for and on behalf of the undersigned, in the undersigned's capacity as an officer and director of CECO Environmental Corp., a Delaware corporation (the "Company"), 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 "Exchange Act"), and the rules thereunder;

(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 "SEC") and any securities exchange or similar authority;

(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

(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.

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.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;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.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;This Limited Power of Attorney shall be governed by and construed in accordance with the laws of the State of Delaware.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;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.

------

This Limited Power of Attorney may be executed by electronic signature, which shall be deemed an original.

Date: January 6, 2026

Signature: _<u>/s/ Todd Gleason</u>___________________

Name: _<u>Todd Gleason</u>_________________________

Title: Chief Executive Officer

------

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

## FORM 4

### STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

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

[ ] Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

---

| | | |
|:---|:---|:---|
| **1. Name and Address of Reporting Person**<sup>*</sup><br>Gleason Todd R<br><sub>(Last) (First) (Middle)</sub><br>5080 SPECTRUM DRIVE<br>SUITE 800E<br><sub>(Street)</sub><br>ADDISON, TX 75001<br><sub>(City) (State) (Zip)</sub> | **3. Date of Earliest Transaction (Month/Day/Year)**<br>2026-03-07 | **5. Relationship of Reporting Person(s) to Issuer**<br>(Check all applicable)<br>[X] Director [ ] 10% Owner<br>[X] Officer (give title below) [ ] Other (specify below)<br>_Chief Executive Officer_ |
| **2. Issuer Name and Ticker or Trading Symbol**<br>CECO ENVIRONMENTAL CORP [ CECO ] | **4. If Amendment, Date of Original Filed (Month/Day/Year)**<br>  | **6. Individual or Joint/Group Filing (Check Applicable Line)**<br>[X] Form filed by One Reporting Person<br>[ ] Form filed by More than One Reporting Person |

---

## Table I - Non-Derivative Securities

---

|  |  |  |  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1. Title of Security | 2. Transaction Date | 2A. Deemed Execution Date | 3. Transaction Code (V) | 3. Transaction Code (V) | 4. Securities Acquired (A) or Disposed of (D) | 4. Securities Acquired (A) or Disposed of (D) | 4. Securities Acquired (A) or Disposed of (D) | 5. Amount of Securities Beneficially Owned | 6. Ownership Form | 7. Nature of Indirect Beneficial Ownership |
| 1. Title of Security | 2. Transaction Date | 2A. Deemed Execution Date | Code | V | Amount | (A) or (D) | Price | 5. Amount of Securities Beneficially Owned | 6. Ownership Form | 7. Nature of Indirect Beneficial Ownership |
| Common Stock | 2026-03-07 |  | F<sup>(1)</sup> |  | 3557 | D | $52.53 | 407278 | D |  |
| Common Stock |  |  |  |  |  |  |  | 444 | I | By first son |
| Common Stock |  |  |  |  |  |  |  | 444 | I | By second son |
| Common Stock |  |  |  |  |  |  |  | 444 | I | By third son |
| Common Stock |  |  |  |  |  |  |  | 444 | I | By daughter |

---

## Table II - Derivative Securities

---

|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1. Title of Derivative Security | 2. Conversion or Exercise Price | 3. Transaction Date | 3A. Deemed Execution Date | 4. Transaction Code (V) | 4. Transaction Code (V) | 5. Number of Derivative Securities Acquired (A) or Disposed of (D) | 5. Number of Derivative Securities Acquired (A) or Disposed of (D) | 6. Date Exercisable and Expiration Date | 6. Date Exercisable and Expiration Date | 7. Title and Amount of Underlying Securities | 7. Title and Amount of Underlying Securities | 8. Price of Derivative Security | 9. Number of Derivative Securities Beneficially Owned | 10. Ownership Form | 11. Nature of Indirect Beneficial Ownership |
| 1. Title of Derivative Security | 2. Conversion or Exercise Price | 3. Transaction Date | 3A. Deemed Execution Date | Code | V | (A) | (D) | Date Exercisable | Expiration Date | Title | Amount or Number of Shares | 8. Price of Derivative Security | 9. Number of Derivative Securities Beneficially Owned | 10. Ownership Form | 11. Nature of Indirect Beneficial Ownership |
| Stock Option (right to buy) | $6.36 |  |  |  |  |  |  | <sup>(2)</sup> | <sup>(2)</sup> | Common Stock | 316902 |  | 316902 | D |  |
| Stock Option (right to buy) | $12.72 |  |  |  |  |  |  | <sup>(2)</sup> | <sup>(2)</sup> | Common Stock | 598204 |  | 598204 | D |  |
| Stock Option (right to buy) | $21.31 |  |  |  |  |  |  | <sup>(3)</sup> | <sup>(3)</sup> | Common Stock | 25446 |  | 25446 | D |  |
| Stock Option (right to buy) | $23.5 |  |  |  |  |  |  | <sup>(4)</sup> | <sup>(4)</sup> | Common Stock | 67347 |  | 67347 | D |  |
| Restricted Stock Units | <sup>(5)</sup> |  |  |  |  |  |  | <sup>(6)</sup> | <sup>(6)</sup> | Common Stock | 225000 |  | 225000 | D |  |
| Restricted Stock Units | <sup>(5)</sup> |  |  |  |  |  |  | <sup>(7)</sup> | <sup>(7)</sup> | Common Stock | 150000 |  | 150000 | D |  |

---

### Footnotes:

(1) Reflects shares withheld for net settlement to cover the tax liability for the vesting of restricted stock units.

(2) The stock option vested in four installments beginning on June 6, 2021, and expires on June 6, 2027.

(3) The stock option vests in three equal annual installments beginning on March 15, 2025, and expires on March 15, 2034.

(4) The stock option vests in three equal annual installments beginning on March 17, 2026, and expires on March 17, 2035.

(5) Represents performance-based restricted stock units. Each restricted stock unit represents a contingent right to receive one share of the Company's stock.

(6) Conversion of restricted stock units to the Company's common stock will occur on July 5, 2027 assuming the reporting person is still employed by the Company and if the shares of the Company's common stock have achieved certain stock price targets over the course of the performance period.

(7) Conversion of restricted stock units to the Company's common stock will occur on June 4, 2029 assuming the reporting person is still employed by the Company and if the shares of the Company's common stock have achieved certain stock price targets over the course of the performance period.

**Remarks:**
Exhibit 24: Power of Attorney

**Signature:** /s/ Kiril Kovachev as Attorney-in-Fact for Todd Gleason  
**Date:** 2026-03-09

### Remarks:

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.

**Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.**