X0508 4 2023-09-29 0 0000003197 CECO ENVIRONMENTAL CORP CECO 0001941417 Johansson Peter K. 14651 NORTH DALLAS PARKWAY DALLAS TX 75254 0 1 0 0 See Remarks 0 Common Stock 40338 D Restricted Stock Units 2023-09-29 4 A 0 47247 15.97 A Common Stock 47247 47247 D Represents performance-based restricted stock units. Each restricted stock unit represents a contingent right to receive one share of the Company's stock. 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. Title: Senior Vice President, Chief Financial and Strategy Officer Exhibit 24: Power of Attorney /s/ Kiril Kovachev as Attorney-in-Fact for Peter K. Johansson 2023-10-03