SEC Filing Summary: DEZWIREK JASON - Common Stock Transactions

Jason DeZwirek, a director at CECO ENVIRONMENTAL CORP, reported the sale of 68,000 shares of Common Stock through transactions occurring on June 24 and June 25, 2026. The sales were conducted indirectly through 0to100 Inc. The weighted average sale price for the June 24 transaction was $96.609 per share, and for the June 25 transaction, it was $97.2792 per share. Following these transactions, DeZwirek directly owns 1,236,080 shares and indirectly owns 2,770,546 shares through Icarus Investment Corp. Footnotes indicate that the prices reported are weighted averages for multiple transactions, and full details will be provided upon request. DeZwirek disclaims beneficial ownership of shares held by Icarus Investment Corp. except to the extent of his pecuniary interest.