Director at Comfort Systems USA (NYSE: FIX) sells 4,500 shares

Rhea-AI Filing Summary

Comfort Systems USA, Inc. director Darcy Anderson reported an open-market sale of the company’s common stock. On March 3, 2026, Anderson sold 4,500 shares at an average price of $1369.7418 per share, as noted in a footnote stating this is an average price and that full pricing details are available from the company’s Office of the General Counsel. Following this transaction, Anderson directly holds 18,035 shares of Comfort Systems USA 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

OMB APPROVAL

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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^*

ANDERSON DARCY

(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
	Officer (give title below)		Other (specify below)

3. Date of Earliest Transaction (Month/Day/Year)
03/03/2026

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	03/03/2026		S		4,500	D	$1,369.7418(1)	18,035	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	03/05/2026
	** 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 FIX director Darcy Anderson report?

Darcy Anderson reported an open-market sale of Comfort Systems USA common stock. On March 3, 2026, Anderson sold 4,500 shares at an average price of $1369.7418 per share and now directly holds 18,035 shares after the transaction.

How many Comfort Systems USA (FIX) shares did Darcy Anderson sell?

Darcy Anderson sold 4,500 shares of Comfort Systems USA common stock. The transaction occurred on March 3, 2026, as an open-market sale and left Anderson with a remaining direct holding of 18,035 shares in the company.

At what price were the FIX shares sold in Darcy Anderson’s Form 4?

The reported average sale price was $1369.7418 per share for the 4,500 Comfort Systems USA shares. A footnote explains this is an average price, and detailed trade prices and share amounts are available from the company’s Office of the General Counsel.

What is Darcy Anderson’s remaining FIX share ownership after the sale?

After selling 4,500 shares, Darcy Anderson directly holds 18,035 shares of Comfort Systems USA common stock. This remaining ownership reflects Anderson’s direct holdings as reported in the Form 4 insider trading disclosure filed with the SEC.

What type of insider transaction did Comfort Systems USA (FIX) disclose?

Comfort Systems USA disclosed an open-market sale by director Darcy Anderson. The Form 4 shows a sale of 4,500 common shares at an average price of $1369.7418, with Anderson retaining direct ownership of 18,035 shares following the transaction.

What does the pricing footnote in Darcy Anderson’s FIX Form 4 indicate?

The footnote states the reported $1369.7418 per share is an average sale price for the shares. It also explains that full details on the exact number of shares sold at each specific price are available from the company’s Office of the General Counsel upon request.