William George III - 23 Feb 2026 Form 4 Insider Report for COMFORT SYSTEMS USA INC (FIX)

Reporting relationship: CHIEF FINANCIAL OFFICER
Issuer ticker: FIX
Reported as of: 23 Feb 2026
Net transaction value: -$12,532,248
SEC form: 4
Accepted by SEC: 24 Feb 2026, 10:00:05 UTC
Prior SEC filing: 03 Dec 2025
Next SEC filing: 25 Mar 2026
Source filing: View source filing
Reporting owner signature: /s/ Rachel R. Eslicker, Attorney-in-Fact

Key filing fact

William George III filed Form 4 for COMFORT SYSTEMS USA INC (FIX) on 24 Feb 2026.

Key facts

This page summarizes William George III's Form 4 filing for COMFORT SYSTEMS USA INC (FIX).
3 reported transactions and 1 derivative row are listed below.
Accepted by SEC: 24 Feb 2026, 10:00.

Change

Previous filing in this sequence was filed on 03 Dec 2025.
Current net transaction value: -$12,532,248.

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 0001205073 Primary reporting owner

GEORGE WILLIAM III

Relationship: CHIEF FINANCIAL OFFICER
Address: C/O COMFORT SYSTEMS USA, INC., 9753 KATY FREEWAY, SUITE 700, HOUSTON
Signature: /s/ Rachel R. Eslicker, Attorney-in-Fact
Signature date: 23 Feb 2026

Reported non-derivative transactions

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

FIX transaction

Common Stock

Options Exercise

Transaction value: $382,500
Shares: +9,000
Change %: +24%
Price: $42.50
Shares after: 46,824
Date: 23 Feb 2026
Ownership: Direct

FIX transaction

Common Stock

Sale

Transaction value: $12,914,748
Shares: -9,000
Change %: -19%
Price: $1434.97
Shares after: 37,824
Date: 23 Feb 2026
Ownership: Direct
Footnotes: F1

Reported derivative securities

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

FIX transaction Derivative

Option to Buy

Options Exercise

Transaction value: $0
Shares: -9,000
Change %: -100%
Price: $0.000000
Shares after: 0
Date: 23 Feb 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 9,000
Exercise price: $42.50
Footnotes: 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 the average price of shares sold; full information regarding the number of shares sold and specific prices will be made available upon request to the Company's Office of the General Counsel.

Footnote F2

Stock options were granted on 03/07/2018, vested ratably over a three-year period, and were fully vested on 04/01/2021.