CECO: Leadership change · Company disclosure

Item 5.02 Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers. The information set forth under Item 5.07 of this Current Report on Form 8-K is incorporated by reference into this Item 5.02 to the extent applicable. As discussed below, the stockholders approved the CECO Equity Plan Proposal at the Annual Meeting, which is effective as of May 27, 2026. The 2026 Plan succeeds the existing CECO Environmental Corp. 2021 Equity and Incentive Compensation Plan (the “2021 Plan”). The 2026 Plan provides for the grant of up to (i) 3,350,000 shares of Company Common Stock, plus (ii) the shares remaining available for future grant under the 2021 Plan as of May 27, 2026. The foregoing description of the 2026 Plan and the summary contained in the Joint Proxy Statement/Prospectus do not purport to be complete and are qualified in their entirety by reference to the full text of the 2026 Plan, which is attached hereto as Exhibit 10.1. Item 5.07 Submission of Matters to a Vote of Security Holders On May 27, 2026, the Company held its 2026 annual meeting of stockholders (the “Annual Meeting”). At the Annual Meeting, the Company’s stockholders considered the proposals described in detail in the joint proxy statement/prospectus, dated April 23, 2026, included in the registration statement on Form S-4 filed by the Company with the Securities and Exchange Commission (File No. 333-294924), which was declared effective by the Securities and Exchange Commission on April 22, 2026 (the “Joint Proxy Statement/Prospectus”) including the proposals set forth below relating to the Merger Agreement. The final voting results for each matter submitted to a vote of the Company’s stockholders at the Annual Meeting