Comfort Systems CFO sells 5,000 shares

COMFORT SYSTEMS USA INC Chief Financial Officer William George III reported selling 5,000 shares of Common Stock in open-market transactions.

Rhea-AI Filing Summary

COMFORT SYSTEMS USA INC Chief Financial Officer William George III reported selling 5,000 shares of Common Stock in open-market transactions. He sold 4,000 shares on May 8, 2026 at an average price of 1948.1710 per share and 1,000 shares on May 11, 2026 at an average price of 2020.9650 per share. After these sales, he continues to hold 32,804 shares directly, showing he retains a substantial equity position in the company. A footnote notes the reported prices are averages and that detailed trade breakdowns are available from the company’s Office of the General Counsel.

Insider Trade Summary

Net Seller: 5,000 shares

Net Sell 2 txns

Insider GEORGE WILLIAM III

Role CHIEF FINANCIAL OFFICER

Sold 5,000 shs ($9.81M)

Type	Security	Shares	Price	Value
Sale	Common Stock	1,000	$2,020.965	$2.02M
Sale	Common Stock	4,000	$1,948.171	$7.79M

Holdings After Transaction: Common Stock — 32,804 shares (Direct)

Footnotes (1)

1. F1. 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.

Key Figures

Shares sold May 8, 2026: 4,000 shares Price per share May 8, 2026: 1948.1710 per share Shares sold May 11, 2026: 1,000 shares +3 more

6 metrics

Shares sold May 8, 2026 4,000 shares Open-market sale of Common Stock at average price 1948.1710

Price per share May 8, 2026 1948.1710 per share Average sale price for 4,000 Common Stock shares

Shares sold May 11, 2026 1,000 shares Open-market sale of Common Stock at average price 2020.9650

Price per share May 11, 2026 2020.9650 per share Average sale price for 1,000 Common Stock shares

Shares remaining after sales 32,804 shares Direct Common Stock holdings following the transactions

Total shares sold 5,000 shares Net open-market sales reported in this Form 4

Key Terms

open-market sale, Common Stock, average price, Office of the General Counsel, +1 more

5 terms

open-market sale financial

"transaction_action: "open-market sale""

An open-market sale is when a shareholder sells existing shares directly on a public exchange to any willing buyer, rather than through a private deal. Think of it like putting goods on a busy market stall where price is set by supply and demand; for investors it matters because such sales increase available supply, can put short-term downward pressure on the stock price, and signal changes in liquidity or investor confidence.

Common Stock financial

"security_title: "Common Stock""

Common stock represents ownership shares in a company, giving investors a stake in its success and a say in important decisions through voting rights. It is the most common type of stock traded on markets and can provide income through dividends, as well as potential for value growth. For investors, holding common stock means sharing in the company’s profits and risks.

average price financial

"Represents the average price of shares sold"

Office of the General Counsel regulatory

"available upon request to the Company's Office of the General Counsel"

Form 4 regulatory

"INSIDER FILING DATA (Form 4)"

Form 4 is a official document that company insiders, such as executives or major shareholders, file with regulators whenever they buy or sell company shares. It provides transparency about how those with inside knowledge are trading, helping investors see if insiders are confident in the company's prospects or may be selling for personal reasons. This information can influence investor decisions by revealing insiders' perspectives on the company's value.

FAQ

What insider transaction did COMFORT SYSTEMS USA INC (FIX) report?

COMFORT SYSTEMS USA INC reported that its CFO, William George III, sold 5,000 shares of Common Stock in open-market transactions. These trades occurred over two days in May 2026 and were reported on a Form 4 insider filing.

How many COMFORT SYSTEMS USA INC (FIX) shares did the CFO sell and at what prices?

The CFO sold 4,000 shares at an average price of 1948.1710 per share and 1,000 shares at an average price of 2020.9650 per share. Both transactions were reported as open-market sales of Common Stock.

How many COMFORT SYSTEMS USA INC (FIX) shares does the CFO still hold after the sales?

Following the reported open-market sales totaling 5,000 shares, the CFO’s direct holdings stand at 32,804 COMFORT SYSTEMS USA INC Common Stock shares. This remaining position indicates that he continues to have a significant stake in the company.

Were the COMFORT SYSTEMS USA INC (FIX) insider sales open-market transactions?

Yes. Both transactions are coded as “S” and described as sales in open-market or private transactions. The Form 4 characterizes them as open-market sales of Common Stock by the Chief Financial Officer of COMFORT SYSTEMS USA INC.

What does the footnote in the COMFORT SYSTEMS USA INC (FIX) Form 4 say about pricing?

The footnote explains that the reported prices represent average prices for the shares sold. It adds that full details on the number of shares sold and specific individual trade prices are available from the company’s Office of the General Counsel upon request.

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Accepted by SEC EDGAR 05/12/2026 - 04:30 PM Learn about SEC filing dates

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^*

GEORGE WILLIAM III

(Last) (First) (Middle)

C/O COMFORT SYSTEMS USA, INC.

9753 KATY FREEWAY, SUITE 700

(Street)

HOUSTON TEXAS 77024

(City) (State) (Zip)

UNITED STATES

(Country)

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
05/08/2026

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

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

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

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	05/08/2026		S		4,000	D	$1,948.171(1)	33,804	D
Common Stock	05/11/2026		S		1,000	D	$2,020.965(1)	32,804	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	05/12/2026
	** 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.
* Form 4: SEC 1474 (03-26)