CFO of COMFORT SYSTEMS USA INC (FIX) exercises options and sells 9,000 shares

Rhea-AI Filing Summary

COMFORT SYSTEMS USA INC chief financial officer William George III reported option exercises and share sales in company stock. On February 23, 2026, he exercised options for 9,000 shares of common stock at an exercise price of $42.50 per share.

Those options, originally granted on March 7, 2018 and fully vested by April 1, 2021, converted into 9,000 common shares. On the same date, he sold 9,000 common shares in open-market or private transactions at an average price of $1,434.972 per share, leaving him with 37,824 shares of directly owned common stock.

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

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Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

GEORGE WILLIAM III

(Last) (First) (Middle)

C/O COMFORT SYSTEMS USA, INC.

9753 KATY FREEWAY, SUITE 700

(Street)

HOUSTON TX 77024

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
COMFORT SYSTEMS USA INC [ FIX ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	CHIEF FINANCIAL OFFICER

3. Date of Earliest Transaction (Month/Day/Year)
02/23/2026

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	02/23/2026		M		9,000	A	$42.5	46,824	D
Common Stock	02/23/2026		S		9,000	D	$1,434.972(1)	37,824	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Option to Buy	$42.5	02/23/2026		M			9,000	04/01/2021(2)	03/07/2028	Common Stock	9,000	$0	0	D

Explanation of Responses:

1. 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.

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

	/s/ Rachel R. Eslicker, Attorney-in-Fact	02/23/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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FAQ

What insider transactions did FIX CFO William George III report?

The CFO reported exercising options for 9,000 shares and selling 9,000 common shares of COMFORT SYSTEMS USA INC on February 23, 2026. These moves converted vested options into stock and then reduced his directly held share count.

How many COMFORT SYSTEMS USA (FIX) shares did the CFO sell?

He sold 9,000 shares of COMFORT SYSTEMS USA INC common stock. According to the disclosure, these shares were sold in open-market or private transactions at an average price of $1,434.972 per share, based on detailed trade data available from the company’s General Counsel.

What stock options did the FIX CFO exercise in this Form 4?

He exercised stock options covering 9,000 shares of COMFORT SYSTEMS USA INC common stock at an exercise price of $42.50 per share. These options were granted on March 7, 2018 and vested ratably over three years, becoming fully vested by April 1, 2021.

How many COMFORT SYSTEMS USA (FIX) shares does the CFO own after the transactions?

After exercising options and selling shares, the CFO directly owns 37,824 shares of COMFORT SYSTEMS USA INC common stock. This figure reflects his remaining direct holdings following the 9,000-share sale recorded on February 23, 2026 in the Form 4 filing.

What does transaction code M mean in the FIX Form 4 filing?

Transaction code M in the COMFORT SYSTEMS USA INC Form 4 indicates an exercise or conversion of a derivative security, such as a stock option. Here, it reflects the CFO converting 9,000 stock options granted in 2018 into 9,000 shares of common stock.

Is the reported FIX share sale price an average or specific trade price?

The $1,434.972 per share figure is an average sale price for the 9,000 COMFORT SYSTEMS USA INC shares sold. The filing notes that full details of individual trade prices and share amounts are available upon request from the company’s Office of the General Counsel.