[Form 4] Comfort Systems USA, Inc. Insider Trading Activity

Rhea-AI Filing Summary

Julie Shaeff, the Chief Accounting Officer of Comfort Systems USA, Inc. (FIX), reported a sale of common stock on 08/12/2025. The Form 4 lists a disposition of 1,369 shares, leaving her with 16,023 shares held directly after the transaction.

The filing shows an average sale price of $704.5 (footnote indicates this is the average price and that full price and share-by-share details are available from the Company’s Office of the General Counsel). The form records the routine insider-sale disclosure but provides no explanation of motive or additional context.

Insights

Financial Analyst

TL;DR: Officer sold 1,369 shares, reducing direct holdings to 16,023; no operational impact or reason disclosed.

The transaction reported is a direct disposition of common stock by the company’s Chief Accounting Officer. The filing quantifies the shares sold and the resulting direct ownership level but does not include an explanation for the sale or link it to company performance. Absent further context—such as size relative to outstanding shares or a scheduled plan—this disclosure is a routine insider sale and provides limited information for valuation impact.

Corporate Governance Expert

TL;DR: Form 4 shows compliance with Section 16 reporting for an officer sale; disclosure includes an average price footnote.

The Form 4 appears to meet Section 16 disclosure requirements by reporting the disposition and post-transaction beneficial ownership. The filing includes a footnote clarifying that the listed price is an average and that detailed sale information may be obtained from the company. The sale reduced the reporting person’s direct holdings from 17,392 shares to 16,023 shares (a reduction of 1,369 shares, or approximately 7.9% of the pre-transaction position), but the filing provides no governance concerns or indications of unusual trading practices.

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

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

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^*

Shaeff Julie

(Last) (First) (Middle)

C/O COMFORT SYSTEMS USA, INC.

675 BERING DR. SUITE 400

(Street)

HOUSTON TX 77057

(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 ACCOUNTING OFFICER

3. Date of Earliest Transaction (Month/Day/Year)
08/12/2025

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	08/12/2025		S		1,369	D	$704.5(1)	16,023	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	08/13/2025
	** 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.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

What insider transaction does the FIX Form 4 report?

The Form 4 reports a disposition of 1,369 common shares by Julie Shaeff, the Chief Accounting Officer.

How many shares does Julie Shaeff own after the reported sale (FIX)?

After the reported transaction, she beneficially owns 16,023 shares directly.

What price is reported for the shares sold on the Form 4 for FIX?

The filing lists an average price of $704.5, with a footnote stating this represents the average price and that full details are available from the Company’s Office of the General Counsel.

When was the transaction reported on the Form 4 for FIX executed?

The transaction date recorded in the filing is 08/12/2025.

What is Julie Shaeff’s role at Comfort Systems USA (FIX)?

She is the company’s Chief Accounting Officer and is identified as the reporting person on the Form 4.

Was the sale reported as part of a Rule 10b5-1 trading plan?

The filing does not indicate that the transaction was made pursuant to a Rule 10b5-1 plan.

Who signed the Form 4 for this insider transaction (FIX)?

The Form 4 was signed by Rachel R. Eslicker, Attorney-in-Fact on behalf of the reporting person.