Comfort Systems Usa FIX Insider Ownership

NYSE FIX

$1,170.00 -109.37 (-8.55%)

As of: Oct 23, 2026 · 2:24 PM EDT

Insider Holdings by Owner

390.90K Shares

Insider Ownership Statistics

as of 30 Sep, 2026

Insider Ownership

1.10%

▼-0.074% pp QoQ

Shares Held by Insiders

387.01K

filed for Sep 2026

▼-6.31% QoQ

Shares Outstanding

35.22Mn

35,221,000 shares

Direct Holdings

366.70K

Indirect: 20.31K

Net Shares Traded (QoQ)

-26.08K

net selling in Sep 2026

Insiders Holding Shares

with Form 4 holdings on file

Shares Owned by Insiders

Shares held % of outstanding

Latest —

Average ownership —

Peak ownership —

Shares Purchased/Sold by Insiders

Bought Sold

Latest quarter —

Net over range —

Buying quarters —

Insider Ownership Summary

Updated Oct 10, 2026

Over the past year, FIX insiders sold $185.18 million of stock (122.46K shares) on the open market and bought none.

Counted by insider, open-market selling of FIX stock in the past 12 months came from 12 insiders, with no insider buying.
Brian E. Lane (Chief Executive Officer) sold the most Comfort Systems USA stock on the open market over the past 12 months, $68.05 million (43.66K shares), most recently on August 26, 2026.
Away from the open market, FIX insiders received 9.58K shares in stock awards, acquired 9K shares through option exercises and conversions, gave up 11.02K shares to cover taxes or exercise prices and gave away 3.85K shares as gifts over the last 12 months.
Business Quant data shows Comfort Systems USA insiders holding 387.01K shares in total in their latest Form 4 filings, down 6.31% from 413.09K shares at the end of Q2 2026 and down 23.29% from 504.54K shares at the end of Q3 2025.
Of the 387.01K shares held by Comfort Systems USA insiders, 366.7K shares (94.75%) are held directly and 20.31K shares (5.25%) indirectly, through trusts, partnerships, family members and other entities.
Business Quant counts 17 insiders with holdings in Comfort Systems USA stock, among the officers, directors and 10% owners who have filed a Form 4 in the past two years.
FIX's largest insider holders by reported holdings are Brian E. Lane (Chief Executive Officer, 145.06K shares), Franklin Myers (Director, 67.11K shares) and William George III (Chief Financial Officer, 30.25K shares).
Brian E. Lane alone accounts for 37.48% of the shares held by Comfort Systems USA insiders.
Institutions held 93.08% of Comfort Systems USA's outstanding shares in their Q2 2026 13F filings, insiders about 1.10% based on their latest Form 4 filings, and other investors, including the public, the remaining 5.82%.
A total of 51 Form 4 filings with transactions in Comfort Systems USA stock were made over the past 12 months, by 16 insiders.
These insider figures for Comfort Systems USA are based on Form 4 filings through August 27, 2026.

Form 4 Holdings

Insiders Holding FIX

Insiders 18

Shares held 390.90K

Of outstanding 1.11%

#	Insider	Position	Direct	Indirect	Total	Share of Insiders	Last Filed
1	Brian E. Lane	Chief Executive Off.	145,065	0	145,065	37.1%	27 Aug, 2026
2	Franklin Myers	Director	58,615	8,495	67,110	17.2%	12 Aug, 2026
3	William Iii George	Chief Financial Officer	30,250	0	30,250	7.7%	18 Aug, 2026
4	Herman E Bulls	Director	29,879	0	29,879	7.6%	19 May, 2026
5	T Mckenna Trent	President/Chief Operating Off.	22,346	0	22,346	5.7%	03 Apr, 2026
6	Darcy Anderson	Director	18,140	0	18,140	4.6%	19 May, 2026
7	Alan Krusi	Director	0	16,828	16,828	4.3%	17 Jun, 2022
8	Constance Ellen Skidmore	Director	12,732	0	12,732	3.3%	19 May, 2026
9	Julie Shaeff	Chief Accounting Officer	12,624	0	12,624	3.2%	11 May, 2026
10	Laura Finley Howell	Svp General Counsel	7,938	0	7,938	2.0%	05 Dec, 2025
11	William J Sandbrook	Director	7,771	0	7,771	2.0%	19 May, 2026
12	Cindy L. Wallis-Lage	Director	0	5,818	5,818	1.5%	19 May, 2026
13	Vance W Tang	Director	0	4,998	4,998	1.3%	02 May, 2025
14	Pablo G. Mercado,	Director	3,105	0	3,105	0.8%	19 May, 2026
15	Terrence Reed	Svp Chro	2,968	0	2,968	0.8%	03 Apr, 2026
16	Rhoman J Hardy	Director	1,890	0	1,890	0.5%	28 May, 2026
17	Gaurav Kapoor	Director	0	832	832	0.2%	19 May, 2026
18	Rachel R. Eslicker	Svp General Counsel	608	0	608	0.2%	03 Apr, 2026

Each row is that insider’s most recently reported position, from Form 4 filings over the last 60 months — which is why this total does not tie to the quarterly series above, where a quarter counts only the insiders who filed in it. Shares held through a fund or institutional portfolio are counted on the institutional ownership page instead.

Form 4 Filings

1,569 Insider Transactions

Source SEC Form 4

Latest quarter Sep 2026

Date	Insider	Position	Transaction	Shares	Price	Value	Shares Held After	Ownership
26 Aug, 2026	Brian E. Lane	Chief Executive Off.	Disposed S	16,024	$1,608.21	$25.77Mn	145,065	Direct
17 Aug, 2026	William Iii George	Chief Financial Officer	Disposed S	2,554	$1,859.65	$4.75Mn	30,250	Direct
10 Aug, 2026	Franklin Myers	Director	Disposed S	3,500	$1,690.47	$5.92Mn	58,615	Direct
11 Aug, 2026	Franklin Myers	Director	Disposed S	4,000	$1,693.92	$6.78Mn	8,495	Indirect
24 Jun, 2026	Franklin Myers	Director	Disposed S	6,700	$1,954.47	$13.09Mn	62,115	Direct
27 May, 2026	Rhoman J Hardy	Director	Disposed S	342	$1,900.08	$649.83K	1,890	Direct
21 May, 2026	Franklin Myers	Director	Disposed G	273	$0.00	$0	68,815	Direct
18 May, 2026	Herman E Bulls	Director	Acquired A	105	$0.00	$0	29,879	Direct
18 May, 2026	Cindy L. Wallis-Lage	Director	Acquired A	105	$0.00	$0	5,818	Indirect
18 May, 2026	Rhoman J Hardy	Director	Acquired A	105	$0.00	$0	2,232	Direct
18 May, 2026	William J Sandbrook	Director	Acquired A	105	$0.00	$0	7,771	Direct
18 May, 2026	Darcy Anderson	Director	Acquired A	105	$0.00	$0	18,140	Direct
18 May, 2026	Pablo G. Mercado,	Director	Acquired A	105	$0.00	$0	3,105	Direct
18 May, 2026	Franklin Myers	Director	Acquired A	105	$0.00	$0	69,088	Direct
18 May, 2026	Constance Ellen Skidmore	Director	Acquired A	105	$0.00	$0	12,732	Direct
18 May, 2026	Gaurav Kapoor	Director	Acquired A	105	$0.00	$0	832	Indirect
08 May, 2026	William Iii George	Chief Financial Officer	Disposed S	4,000	$1,948.17	$7.79Mn	33,804	Direct
11 May, 2026	William Iii George	Chief Financial Officer	Disposed S	1,000	$2,020.97	$2.02Mn	32,804	Direct
11 May, 2026	Julie Shaeff	Chief Accounting Officer	Disposed S	1,123	$2,000.37	$2.25Mn	12,624	Direct
07 May, 2026	Franklin Myers	Director	Disposed G	51	$0.00	$0	73,944	Direct

Showing 1 to 20 of 1,569 transactions