Claudio A. Mannarino - 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, 19:04:36 UTC
Prior SEC filing: 01 Aug 2025
Source filing: View source filing
Reporting owner signature: /s/ Kiril Kovachev as Attorney-in-Fact for Claudio Mannarino

Key filing fact

Claudio A. Mannarino filed Form 4 for CECO ENVIRONMENTAL CORP (CECO) on 03 Jun 2026.

Key facts

This page summarizes Claudio A. Mannarino's Form 4 filing for CECO ENVIRONMENTAL CORP (CECO).
2 reported transactions and 1 derivative row are listed below.
Accepted by SEC: 03 Jun 2026, 19:04.

Change

Previous filing in this sequence was filed on 01 Aug 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 0001378778 Primary reporting owner

Mannarino Claudio A

Relationship: Director
Address: 5080 SPECTRUM DRIVE, SUITE 800E, ADDISON
Signature: /s/ Kiril Kovachev as Attorney-in-Fact for Claudio Mannarino
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: +1,108
Change %: +1.4%
Price: $0.000000^*
Shares after: 78,697
Date: 01 Jun 2026
Ownership: Direct
Footnotes: F1

Reported derivative securities

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

CECO transaction Derivative

Restricted Stock Units

Award

Transaction value
Shares: +1,107
Change %: +18%
Price: $0.000000^*
Shares after: 7,113
Date: 01 Jun 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 1,107
Exercise price
Footnotes: F2, F3

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

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 3 footnotes

Footnote F1

Shares will vest on May 15, 2027.

Footnote F2

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 and will vest on May 15, 2027.

Footnote F3

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