Form 4 Filing for Candace Harris-Peterson

Candace Harris-Peterson, Chief Human Resources Officer of CECO ENVIRONMENTAL CORP, acquired 3,105 shares of Common Stock on June 8, 2026, with a transaction price of $0.0. This acquisition includes restricted stock units that vest in three equal annual installments starting June 8, 2027. Following this transaction, Ms. Harris-Peterson now owns 21,991 shares of the company's stock. The filing, designated as Form 4, was signed on June 10, 2026, by an attorney-in-fact for Ms. Harris-Peterson.