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

Rhea-AI Filing Summary

Comfort Systems USA (FIX) – Form 4 insider activity:

Chairman & Director Franklin Myers disclosed three transactions dated 5-6 Aug 2025.

• Charitable gifts: On 05-Aug he donated 72 and 25 common shares (code G), recorded at $0 consideration.
• Open-market sale: On 06-Aug he sold 4,500 shares (code S) at a volume-weighted average price of $683.5656, realising c.$3.1 million in proceeds.

After the transactions Myers’ direct holding declined from 104,896 to 100,396 shares, a 4.3 % reduction. He still owns more than 100k shares—roughly $68 million at the disclosed price—maintaining significant equity alignment with shareholders. No derivative positions were reported and the filing does not mention a Rule 10b5-1 trading plan.

The mix of small charitable gifts and a modest sale suggests routine portfolio management rather than a signal of fundamental change. Market impact is expected to be limited.

Positive

• Insider retains 100,396 shares, demonstrating continued significant ownership alignment with shareholders.
• Charitable donation of 97 shares signals community engagement and has no dilutive effect.

Negative

• Sale of 4,500 shares (~$3.1 m) could be interpreted as mild profit-taking by the chairman.
• No Rule 10b5-1 plan disclosed, leaving transactions open to perception of discretionary timing.

Insights

Securities Analyst

TL;DR: ~4.3% share sale; chairman retains large stake—neutral signal.

The 4,500-share sale amounts to roughly $3.1 m yet leaves Myers with 100,396 shares. Given FIX’s recent strong price performance, partial profit-taking is unsurprising. Size relative to his total holding and FIX’s average trading volume is immaterial, so I view the event as neutral for valuation. The charitable gifts do not affect float. Lack of a disclosed 10b5-1 plan introduces marginal headline risk, but the transaction is too small to alter my investment thesis.

Corporate Governance Specialist

TL;DR: Routine compliance filing; no governance red flags.

Myers remains both Chairman and a major shareholder, preserving alignment incentives. The gifts enhance corporate social responsibility optics, while the sale’s scale does not suggest loss of confidence. No derivative dealings or complex structures appear. Governance impact: not impactful.

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^*

MYERS FRANKLIN

(Last) (First) (Middle)

C/O COMFORT SYSTEMS USA, INC.

675 BERING DRIVE, 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)

X	Director		10% Owner
	Officer (give title below)	X	Other (specify below)
			CHAIRMAN OF THE BOARD

3. Date of Earliest Transaction (Month/Day/Year)
08/05/2025

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	08/05/2025		G(1)		72	D	$0	104,921	D
Common Stock	08/05/2025		G(1)		25	D	$0	104,896	D
Common Stock	08/06/2025		S		4,500	D	$683.5656(2)	100,396	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. This transaction represents a charitable donation.

2. 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	08/07/2025
	** 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

How many Comfort Systems USA (FIX) shares did Franklin Myers sell?

4,500 common shares were sold on 06-Aug-2025 at an average price of $683.5656.

What proceeds did the insider sale generate?

At the reported average price, the sale generated about $3.1 million.

How many FIX shares does Myers still own after the sale?

He directly owns 100,396 common shares following the reported transactions.

Were any derivative securities involved in this Form 4?

No, the filing shows no derivative positions acquired or disposed.

What is the nature of the two smaller transactions on 05-Aug-2025?

They are charitable gifts totaling 97 shares, reported under transaction code G.