Robert E. Knowling Jr. - 01 Jun 2026 Form 4 Insider Report for CECO ENVIRONMENTAL CORP (CECO)

Reporting relationship: Director
Issuer ticker: CECO
Reported as of: 01 Jun 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 03 Jun 2026, 19:09:34 UTC
Prior SEC filing: 08 Dec 2025
Source filing: View source filing
Reporting owner signature: /s/ Kiril Kovachev as Attorney-in-Fact for Robert E. Knowling, Jr.

Key filing fact

Robert E. Knowling Jr. filed Form 4 for CECO ENVIRONMENTAL CORP (CECO) on 03 Jun 2026.

Key facts

This page summarizes Robert E. Knowling Jr.'s Form 4 filing for CECO ENVIRONMENTAL CORP (CECO).
1 reported transaction and 1 derivative row are listed below.
Accepted by SEC: 03 Jun 2026, 19:09.

Change

Previous filing in this sequence was filed on 08 Dec 2025.
Current net transaction value: $0.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001207632 Primary reporting owner

KNOWLING ROBERT E JR

Relationship: Director
Address: 5080 SPECTRUM DRIVE, SUITE 800E, ADDISON
Signature: /s/ Kiril Kovachev as Attorney-in-Fact for Robert E. Knowling, Jr.
Signature date: 03 Jun 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

CECO transaction

Common Stock

Award

Transaction value
Shares: +2,215
Change %: +20%
Price: $0.000000^*
Shares after: 13,077
Date: 01 Jun 2026
Ownership: Direct

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

CECO holding Derivative

Restricted Stock Units

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 20,311
Date: 01 Jun 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 20,311
Exercise price
Footnotes: F1, F2

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 2 footnotes

Footnote F1

Represents restricted stock units granted under the CECO Environmental Corp. Deferred Compensation Plan for Non-Employee Directors. Each restricted stock unit represents a contingent right to receive one share of the Company's common stock.

Footnote F2

Conversion of restricted stock units to the Company's common stock and distribution of such stock under the Deferred Compensation Plan is deferred until termination of service as a Company director.

SEC remarks

Exhibit 24: Power of Attorney