CECO ENVIRONMENTAL CORP — Director's Dealing 2025

Aug 1, 2025

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: CECO ENVIRONMENTAL CORP (CECO)
CIK: 0000003197
Period of Report: 2025-07-30

Reporting Person: DEZWIREK JASON (N/A)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2025-07-30	Common Stock	S	43685	$43.0859	Disposed	256315	Indirect
2025-07-30	Common Stock	S	21986	$42.3404	Disposed	234329	Indirect
2025-07-30	Common Stock	S	4329	$41.3614	Disposed	230000	Indirect
2025-07-31	Common Stock	S	19617	$43.7888	Disposed	210383	Indirect
2025-07-31	Common Stock	S	10383	$43.0670	Disposed	200000	Indirect

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	1233865	Direct
Common Stock	2770546	Indirect

Footnotes

F1: Price reflects the weighted average sale price for multiple transactions that ranged from $42.65 to $43.63 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 $41.68 to $42.63 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 $40.69 to $41.61 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: Price reflects the weighted average sale price for multiple transactions that ranged from $43.34 to $44.34 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.

F5: Price reflects the weighted average sale price for multiple transactions that ranged from $42.74 to $43.30 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.

F6: Reporting person is an officer of Icarus Investment Corp. and disclaims beneficial ownership except to the extent of his pecuniary interest therein.