Comfort Systems USA Ownership & Insider Activity

Comfort Systems USA (FIX) institutional and insider ownership, recent insider transactions and ownership breakdown.

Insiders own 2.4% of shares outstanding. Institutional investors hold 73.0%. Over the past 90 days, insiders made 3 sales worth $43.2M.

Shares Outstanding

35.194M

Shares Float

30.487M

Insider Shares Owned

840.739K

Insider % Owned

2.4%

Institutional Shares Held

25.707M

Institutional % Held

73.0%

Ownership Breakdown

Net Insider Activity by Month

Purchases (90d)

Sales (90d)

$43.2M total

Net Activity

Net Selling

Net Value (90d)

-$43.2M

Comfort Systems USA Insider Transactions (Last 6 Months)

Date	Insider	Title	Type	Shares	Price	Value
Aug 26, 2026	Brian Lane	CHIEF EXECUTIVE OFF.	SELL	16.024K	$1608.21	$25.8M
Aug 17, 2026	WILLIAM GEORGE III	CHIEF FINANCIAL OFFICER	SELL	2.554K	$1859.65	$4.7M
Aug 10, 2026	FRANKLIN MYERS	—	SELL	7.500K	$1692.31	$12.7M
Jun 24, 2026	FRANKLIN MYERS	—	SELL	6.700K	$1954.47	$13.1M
May 27, 2026	Rhoman Hardy	—	SELL	342.000	$1900.08	$650K
May 11, 2026	Julie Shaeff	CHIEF ACCOUNTING OFFICER	SELL	1.123K	$2000.37	$2.2M
May 8, 2026	WILLIAM GEORGE III	CHIEF FINANCIAL OFFICER	SELL	5.000K	$1962.73	$9.8M
May 7, 2026	FRANKLIN MYERS	—	SELL	5.012K	$1902.57	$8.6M
May 5, 2026	Brian Lane	CHIEF EXECUTIVE OFF.	SELL	11.113K	$1969.84	$21.9M
Apr 30, 2026	Pablo Mercado	—	SELL	500.000	$1779.78	$890K
Apr 29, 2026	WILLIAM SANDBROOK	—	SELL	1.500K	$1732.67	$2.6M

Date	Member	Party	Chamber	Action	Amount
Mar 27, 2026	Alan Armstrong	R	Senate	Purchase	$1,001 - $15,000
Dec 4, 2025	Byron Donalds	R	House	Purchase	$1,001 - $15,000
Dec 4, 2025	Byron Donalds	R	House	Purchase	$1,001 - $15,000
Jan 13, 2025	Robert Bresnahan	R	House	Sale	$1,001 - $15,000