Marcus J. George - 01 Jun 2026 Form 4 Insider Report for Thermon Group Holdings, Inc. (THR)

Reporting relationship: Director
Issuer ticker: THR
Reported as of: 01 Jun 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 03 Jun 2026, 11:49:22 UTC
Prior SEC filing: 02 Apr 2026
Source filing: View source filing
Reporting owner signature: /s/ Ryan Tarkington, Attorney-in-Fact

Key filing fact

Marcus J. George filed Form 4 for Thermon Group Holdings, Inc. (THR) on 03 Jun 2026.

Key facts

This page summarizes Marcus J. George's Form 4 filing for Thermon Group Holdings, Inc. (THR).
2 reported transactions and 0 derivative rows are listed below.
Accepted by SEC: 03 Jun 2026, 11:49.

Change

Previous filing in this sequence was filed on 02 Apr 2026.
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 0001519537 Primary reporting owner

GEORGE MARCUS J

Relationship: Director
Address: 7171 SOUTHWEST PARKWAY, BUILDING 300, SUITE 200, AUSTIN
Signature: /s/ Ryan Tarkington, Attorney-in-Fact
Signature date: 03 Jun 2026

Reported non-derivative transactions

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

THR transaction

Common Stock

Disposed to Issuer

Transaction value
Shares: -52,639
Change %: -100%
Price
Shares after: 0
Date: 01 Jun 2026
Ownership: Direct
Footnotes: F1, F2

THR transaction

Common Stock

Disposed to Issuer

Transaction value
Shares: -50
Change %: -100%
Price
Shares after: 0
Date: 01 Jun 2026
Ownership: Shares held by minor children living in the same household as reporting person.
Footnotes: F1, F2, F3

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

Additional SEC filing notes

Filing notes and footnotes

Section 16 status

Marcus J. George is no longer subject to Section 16 filing requirements. Form 4 or Form 5 obligations may still apply in specific circumstances.

Explanation of responses 3 footnotes

Footnote F1

Pursuant to the terms of the Agreement and Plan of Merger dated February 23, 2026 (the "Merger Agreement") by and among the Issuer, CECO Environmental Corp ("CECO"), and two wholly-owned merger subsidiaries of CECO (the "Merger Subs"), the Issuer merged with the two Merger Subs to become a wholly-owned subsidiary of CECO (the "Merger").

Footnote F2

Pursuant to the terms of the Merger Agreement, each share of Issuer common stock (other than excluded and dissenting shares) was converted into the right to receive, at the election of the holder, one of the following forms of merger consideration, subject to proration as described in the Merger Agreement: (i) 0.6840 shares of CECO common stock and $10.00 in cash, without interest (the "mixed consideration"), which is the default election; (ii) $63.89 in cash, without interest (the "cash consideration"); or (iii) 0.8110 shares of CECO common stock (the "stock consideration"). The reporting person elected the mixed consideration for their shares of Issuer common stock.

Footnote F3

Reporting person disclaims beneficial ownership of the securities, except to the extent of a pecuniary interest therein.