| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| Mannarino Claudio A | Director | 5080 SPECTRUM DRIVE, SUITE 800E, ADDISON | /s/ Kiril Kovachev as Attorney-in-Fact for Claudio Mannarino | 01 Aug 2025 | 0001378778 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | CECO | Common Stock | Sale | $325,711 | -7,759 | -8% | $41.98 | 89,830 | 30 Jul 2025 | Direct | F1 |
| transaction | CECO | Common Stock | Sale | $486,755 | -11,801 | -13% | $41.25 | 78,029 | 30 Jul 2025 | Direct | F2 |
| transaction | CECO | Common Stock | Sale | $17,781 | -440 | -0.56% | $40.41 | 77,589 | 30 Jul 2025 | Direct | F3 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Underlying Class | Amount | Exercise Price | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| holding | CECO | Restricted Stock Units | 6,006 | 30 Jul 2025 | Common Stock | 6,006 | Direct | F4, F5 |
| Id | Content |
|---|---|
| F1 | Price reflects the weighted average sale price for multiple transactions that ranged from $41.54 to $42.54 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 sold at each separate price. |
| F2 | Price reflects the weighted average sale price for multiple transactions that ranged from $40.56 to $41.53 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 sold at each separate price. |
| F3 | Price reflects the weighted average sale price for multiple transactions that ranged from $40.41 to $41.42 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 sold at each separate price. |
| F4 | Represents restricted stock units granted under the CECO Environmental Corp. Deferred Compensation Plan for Non-Employee Directors. Each restricted stock unit represents a contingent right to receive one share of the Company's common stock. |
| F5 | Conversion of restricted stock units to the Company's common stock and distribution of such stock under the Deferred Compensation Plan is deferred until termination of service as a Company director. |