CEO of COMFORT SYSTEMS USA (NYSE: FIX) sells 9,365 company shares

Rhea-AI Filing Summary

COMFORT SYSTEMS USA INC president and CEO Brian E. Lane reported an open-market sale of common stock. On February 25, 2026, he sold 9,365 shares of Common Stock in a transaction coded as a sale, at an average price of $1453.1168 per share. After this transaction, Lane directly owned 171,523 shares of the company’s 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^*

Lane Brian E.

(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)

X	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	PRESIDENT/CHIEF EXECUTIVE OFF.

3. Date of Earliest Transaction (Month/Day/Year)
02/25/2026

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	02/25/2026		S		9,365	D	$1,453.1168(1)	171,523	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

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.

	/s/ Rachel R. Eslicker, Attorney-in-Fact	02/26/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
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FAQ

What insider transaction did COMFORT SYSTEMS USA (FIX) report for Brian E. Lane?

COMFORT SYSTEMS USA reported that Brian E. Lane executed an open-market sale of 9,365 shares of Common Stock. The transaction occurred on February 25, 2026 and was reported on a Form 4 insider filing as a standard sale transaction.

At what price did Brian E. Lane sell COMFORT SYSTEMS USA (FIX) shares?

Brian E. Lane sold COMFORT SYSTEMS USA shares at an average price of $1453.1168 per share. A footnote states this is an average price and that full trade details and exact price breakdowns are available from the company’s Office of the General Counsel upon request.

How many COMFORT SYSTEMS USA (FIX) shares did Brian E. Lane sell?

Brian E. Lane sold 9,365 shares of COMFORT SYSTEMS USA Common Stock in this reported transaction. The Form 4 describes it as a non-derivative open-market sale, coded as a standard sale in either the open market or a private transaction under SEC rules.

How many COMFORT SYSTEMS USA (FIX) shares does Brian E. Lane own after the sale?

After the reported sale, Brian E. Lane directly owned 171,523 shares of COMFORT SYSTEMS USA Common Stock. This post-transaction ownership figure reflects only his direct holdings as disclosed in the Form 4, without detailing any additional indirect or derivative interests.

What does the Form 4 footnote say about Brian E. Lane’s FIX share sale prices?

The footnote explains that the reported $1453.1168 figure represents an average sale price across multiple trades. It notes that detailed information on the exact number of shares sold at each specific price level is available from the company’s Office of the General Counsel upon request.

What is the net effect of Brian E. Lane’s COMFORT SYSTEMS USA (FIX) trades in this filing?

The filing shows only sales, with 9,365 shares sold and no purchases reported. The transaction summary characterizes the activity as a net-sell of 9,365 shares, indicating a reduction in Lane’s directly held Common Stock position by that same share amount.