Comfort Systems (FIX) CAO sells 2,287 shares in open-market trade

Rhea-AI Filing Summary

COMFORT SYSTEMS USA INC chief accounting officer Julie Shaeff reported an open-market sale of 2,287 shares of common stock on March 3, 2026. The shares were sold at an average price of $1,382.1487 per share, and she now directly holds 13,736 shares. The price represents an average across multiple trades, with detailed trade breakdowns available from the company’s Office of the General Counsel.

Insider Trade Summary

Net Seller: 2,287 shares ($3,160,974)

Net Sell 1 txn

Insider Shaeff Julie

Role CHIEF ACCOUNTING OFFICER

Sold 2,287 shs ($3.16M)

Type	Security	Shares	Price	Value
Sale	Common Stock	2,287	$1,382.1487	$3.16M

Holdings After Transaction: Common Stock — 13,736 shares (Direct)

Footnotes (1)

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Form 4 Insider Transactions: What Each Field Means →

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.

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 ACCOUNTING OFFICER

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		2,287	D	$1,382.1487(1)	13,736	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	03/04/2026
	** 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.
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 did COMFORT SYSTEMS USA (FIX) report for Julie Shaeff?

COMFORT SYSTEMS USA reported that chief accounting officer Julie Shaeff executed an open-market sale of 2,287 shares of common stock on March 3, 2026. This was a non-derivative transaction classified as a sale in the open market.

At what price did Julie Shaeff sell COMFORT SYSTEMS USA (FIX) shares?

Julie Shaeff sold the shares at an average price of $1,382.1487 per share. A filing footnote explains this is an average across multiple trades, with the exact share amounts and specific prices available from the company’s Office of the General Counsel upon request.

How many COMFORT SYSTEMS USA (FIX) shares does Julie Shaeff hold after the sale?

After the reported sale, Julie Shaeff directly holds 13,736 shares of COMFORT SYSTEMS USA common stock. The Form 4 notes this figure as the total shares beneficially owned following the transaction, reflecting her remaining direct ownership position.

What type of transaction did Julie Shaeff execute in COMFORT SYSTEMS USA (FIX) stock?

The filing classifies the activity as an open-market sale of common stock, coded as “S” for a sale in the open market or a private transaction. It involved non-derivative securities and is designated as a direct ownership transaction.

Does the COMFORT SYSTEMS USA (FIX) Form 4 explain the pricing details of the sale?

Yes. A footnote states the reported $1,382.1487 per-share figure is an average price for the shares sold. It adds that full information on share amounts and individual prices is available from the company’s Office of the General Counsel on request.