Comfort Systems USA director receives stock grant

SANDBROOK WILLIAM J reported acquisition or exercise transactions in this Form 4 filing.

Rhea-AI Filing Summary

SANDBROOK WILLIAM J reported acquisition or exercise transactions in this Form 4 filing.

Comfort Systems USA director William J. Sandbrook received a stock grant of 105 shares of Common Stock as compensation. The award was issued at no cash cost to him under the 2017 Omnibus Incentive Plan and is based on an annual grant value of $200,000 determined using the stock price on the day of the annual stockholders' meeting. Following this grant, he holds 7,771 shares of Common Stock, including 170 shares held indirectly.

Insider Trade Summary

Grant/Award: 105 shares

Grant/Award 1 txn

Insider SANDBROOK WILLIAM J

Role Director

Type	Security	Shares	Price	Value
Grant/Award	Common Stock	105	$0.00	$0.00

Holdings After Transaction: Common Stock — 7,771 shares (Direct)

Footnotes (2)

1. F1. Shares granted pursuant to the 2017 Omnibus Incentive Plan as approved by stockholders on May 23, 2017. Non-employee directors are given an annual grant of Comfort Systems USA Common Stock following election or reelection at the Company's annual stockholders' meeting. This year's grant is equal to $200,000, as rounded up to the nearest whole share, based on the average of the high and low price of the Company's Common Stock on the day of the annual stockholders' meeting.
2. F2. Shares held directly by the Reporting Person, including 170 shares held indirectly by the Reporting Person.

Key Figures

Stock grant: 105 shares Post-grant holdings: 7,771 shares Annual director grant value: $200,000 +1 more

4 metrics

Stock grant 105 shares Common Stock awarded to director as compensation

Post-grant holdings 7,771 shares Total Common Stock held after transaction, including indirect

Annual director grant value $200,000 Grant value based on average of high and low price on meeting day

Indirect holdings 170 shares Portion of total shares held indirectly by the reporting person

Key Terms

2017 Omnibus Incentive Plan, non-employee directors, annual stockholders' meeting, grant

4 terms

2017 Omnibus Incentive Plan financial

"Shares granted pursuant to the 2017 Omnibus Incentive Plan as approved by stockholders on May 23, 2017."

non-employee directors financial

"Non-employee directors are given an annual grant of Comfort Systems USA Common Stock following election or reelection at the Company's annual stockholders' meeting."

Non-employee directors are board members who do not work for the company as salaried employees and usually do not hold day-to-day management roles. They act like outside referees or independent coaches, providing oversight, asking tough questions, and protecting shareholders’ interests; investors care because these directors help ensure management is accountable, reduce conflicts of interest, and influence decisions that affect company strategy and long-term value.

annual stockholders' meeting financial

"based on the average of the high and low price of the Company's Common Stock on the day of the annual stockholders' meeting."

grant financial

"This year's grant is equal to $200,000, as rounded up to the nearest whole share, based on the average of the high and low price of the Company's Common Stock on the day of the annual stockholders' meeting."

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What did FIX director William J. Sandbrook report in this Form 4?

William J. Sandbrook reported receiving 105 shares of Comfort Systems USA Common Stock as a stock grant. The award was granted at no cash cost to him as director compensation under the company’s 2017 Omnibus Incentive Plan.

How many COMFORT SYSTEMS USA (FIX) shares does Sandbrook hold after this grant?

After the grant, Sandbrook holds 7,771 shares of Comfort Systems USA Common Stock. This total includes 170 shares held indirectly, with the remainder held directly in his name according to the Form 4 filing.

Was Sandbrook’s FIX stock transaction an open-market purchase or sale?

The transaction was not an open-market trade; it was a grant of 105 shares classified as an acquisition under code A. The shares were awarded as director compensation rather than bought or sold on the open market.

What plan governs the FIX stock grant to director Sandbrook?

The stock grant was made under Comfort Systems USA’s 2017 Omnibus Incentive Plan. This plan, approved by stockholders on May 23, 2017, provides annual Common Stock awards to non-employee directors following their election or reelection.

What is the stated value of the 2026 annual stock grant for FIX non-employee directors?

The 2026 annual stock grant for non-employee directors is set at $200,000 in Comfort Systems USA Common Stock. The number of shares is rounded up to the nearest whole share based on the average of the day’s high and low trading prices.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 05/19/2026 - 04:30 PM EDT 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^*

SANDBROOK WILLIAM J

(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)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
05/18/2026

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	05/18/2026		A		105	A	$0(1)	7,771(2)	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. Shares granted pursuant to the 2017 Omnibus Incentive Plan as approved by stockholders on May 23, 2017. Non-employee directors are given an annual grant of Comfort Systems USA Common Stock following election or reelection at the Company's annual stockholders' meeting. This year's grant is equal to $200,000, as rounded up to the nearest whole share, based on the average of the high and low price of the Company's Common Stock on the day of the annual stockholders' meeting.

2. Shares held directly by the Reporting Person, including 170 shares held indirectly by the Reporting Person.

	/s/ Rachel R. Eslicker, Attorney-in-Fact	05/19/2026
	** 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)