Company Atlasby KadoaStar on GitHub

Comfort Systems USA FIX

Comfort Systems USA is the 270th largest S&P 500 company by market cap, worth $40.6 billion. It joined the S&P 500 in the week of 26 Dec 2025. 10 directors have filed with the SEC in the last 12 months (who counts), 1 of them an executive. 5 other officers are on file. At 30 Jun 2026, Vanguard was its largest institutional holder, with 12.9% of the company.

Sector
Industrials
Sub-industry
Construction & Engineering
Headquarters
Houston, Texas
Founded
1997
More
Wikipedia
Market cap
$40.6B
270th largest, 23 Oct 2026 close
Revenue
$9.1B
Fiscal year 2025
Price to sales
4.5
Market cap over revenue
Employees
22,700
10-K, 31 Dec 2025
Market cap per employee
$1.8M
Market cap over employees
Connections
2
S&P 500 companies sharing a director or officer

Largest institutional holders

Each fund group's share of Comfort Systems USA. Where a company has several share classes, the share is of its total value.

13F filings for the quarter to 30 Jun 2026

These five hold 34.9% of Comfort Systems USA.

Source: SEC Form 13F data sets, SEC XBRL shares outstanding 路 All holders

Board and officers

2 people here also hold roles at other S&P 500 companies.

Roles filed up to 30 Sep 2026

NameTitle
Directors (10)
Darcy AndersonDirectorDirector
Herman E. BullsDirectorAlso at Host Hotels & ResortsDirector
Rhoman J. HardyDirectorDirector
Gaurav KapoorDirectorDirector
Brian E. LaneChief Executive OffChief Executive Off
Pablo G. MercadoDirectorDirector
Franklin MyersDirectorDirector
William J. SandbrookDirectorDirector
Constance Ellen SkidmoreDirectorDirector
Cindy L. Wallis-LageDirectorAlso at VeraltoDirector
Officers (5)
William George IIIChief Financial OfficerLast filed 18 Aug 2026Chief Financial Officer
Rachel R. EslickerSVP & General CounselLast filed 3 Apr 2026SVP & General Counsel
Terrence ReedSVP & CHROLast filed 3 Apr 2026SVP & CHRO
Craig SasserChief Operating OfficerLast filed 9 Jul 2026Chief Operating Officer
Julie ShaeffChief Accounting OfficerLast filed 11 May 2026Chief Accounting Officer

Source: SEC insider filings (Forms 3, 4 and 5), Comfort Systems USA's Form 4 filings 路 All directors and officers

Companies that share people with Comfort Systems USA

Each person's title here, then at the other company.

Source: SEC insider filings 路 See the whole network

Comfort Systems USA's market cap since December 2008

Weekly, up to 23 Oct 2026

Show equal percentage changes as equal steps.
201020122014201620182020202220242026$40.6B

Source: Yahoo Finance closing prices, SEC XBRL shares outstanding

Workforce

Headcount at 31 Dec 2025

Employees
22,700
Human Capital ResourcesEmployees鈥擜s of December 31, 2025, we had approximately 22,700 employees as compared to approximately 18,300 employees as of December 31, 2024.
Comfort Systems USA Form 10-K

Source: Comfort Systems USA Form 10-K

Insider trades

Open-market buys and sales by directors and officers. Grants, option exercises and shares withheld for tax are left out.

Trades from 30 Sep 2025 to 30 Sep 2026

Directors and officers sold $185 million of stock in 30 sales and made no open-market purchases in the 12 months to 30 Sep 2026.

DatePersonTitleTypeSharesValue
26 Aug 2026SaleBrian E. LaneChief Executive OffChief Executive OffSale16,024$26M
17 Aug 2026SaleWilliam George IIIChief Financial OfficerChief Financial OfficerSale2,554$4.7M
11 Aug 2026SaleFranklin MyersDirectorDirectorSale4,000$6.8M
10 Aug 2026SaleFranklin MyersDirectorDirectorSale3,500$5.9M
24 Jun 2026SaleFranklin MyersDirectorDirectorSale6,700$13M
27 May 2026SaleRhoman J. HardyDirectorDirectorSale342$650K
11 May 2026SaleJulie ShaeffChief Accounting OfficerChief Accounting OfficerSale1,123$2.2M
11 May 2026SaleWilliam George IIIChief Financial OfficerChief Financial OfficerSale1,000$2.0M
8 May 2026SaleWilliam George IIIChief Financial OfficerChief Financial OfficerSale4,000$7.8M
7 May 2026SaleFranklin MyersDirectorDirectorSale4,500$8.6M

Showing 10 of 30 trades

Source: SEC insider transactions data sets, Comfort Systems USA's Form 4 filings

Trades by members of Congress and officials

Trades members of Congress and senior executive branch officials disclosed, including their families'. Amounts are filed as ranges.

Trades from 20 Oct 2023 to 20 Oct 2026

4 people disclosed 5 purchases and 1 sale of Comfort Systems USA stock since October 2023.

DateMember or officialTypeAmount
27 Mar 2026Alan Armstrong (Senate, R-OK)Senate, R-OK 路 BoughtPurchase$1,001 to $15,000$1K to $15K
23 Mar 2026Donald J Trump (President)President 路 BoughtPurchase$1,001 to $15,000$1K to $15K
6 Jan 2026Donald J Trump (President)President 路 BoughtPurchase$100,001 to $250,000$100K to $250K
4 Dec 2025Byron Donalds (House, R-FL)House, R-FL 路 BoughtPurchase$1,001 to $15,000$1K to $15K
4 Dec 2025Byron Donalds (House, R-FL)House, R-FL 路 BoughtPurchase$1,001 to $15,000$1K to $15K
13 Jan 2025Rob Bresnahan (House, R-PA)House, R-PA 路 SoldSale$1,001 to $15,000$1K to $15K

Source: House, Senate and OGE disclosures via the Congress trading monitor

Not on file: no WARN layoff notices under its own name since October 2023.