Comfort Systems USA (FIX)Director sold ~$71K

~$71K

Approx. value · 100 sh @ $706.00

12K

Holds after · shares reported

Traded

Sep 9, 2025

Filed

Sep 10, 2025

The story around this disclosure

Every dated public record OQRO holds about the company from 60 days before to 120 days after, oldest first. It shows what was going on; none of it is a stated reason for the trade.

1. Jul 31, 2025InsiderOfficer sold ~$3.15M of FIX shares in the open market
2. Aug 6, 2025InsiderDirector sold ~$3.08M of FIX shares in the open market
3. Aug 7, 2025InsiderCEO sold ~$6.92M of FIX shares in the open market
4. Aug 8, 2025InsiderCFO sold ~$5.84M of FIX shares in the open market
5. Aug 12, 2025InsiderOfficer sold ~$964K of FIX shares in the open market
6. Aug 22, 2025InsiderDirector sold ~$750K of FIX shares in the open market
7. Aug 25, 2025InsiderDirector sold ~$483K of FIX shares in the open market
8. Aug 27, 2025InsiderDirector sold ~$2.13M of FIX shares in the open market
9. Sep 9, 2025 · this disclosureInsiderDirector sold ~$71K of FIX shares in the open market

What came next

1. Sep 9, 2025InsiderDirector sold ~$425K of FIX shares in the open market
2. Sep 10, 2025InsiderDirector sold ~$587K of FIX shares in the open market
3. Oct 23, 2025Company filing · Form 8-K · Results, Other newsReported its results, and reported other company news
4. Oct 29, 2025Insider · 3 peopleInsiders: 3 sales (~$9.6M)
5. Oct 31, 2025InsiderDirector sold ~$3.83M of FIX shares in the open market
6. Nov 5, 20255% stakeFMR LLC reported a passive stake (13G) of 5.4%
7. Nov 13, 20255% stakeCapital World Investors reported a passive stake (13G) of 5.1%
8. Nov 24, 2025InsiderCEO sold ~$6.79M of FIX shares in the open market
9. Dec 1, 2025InsiderCFO sold ~$4.19M of FIX shares in the open market
10. Dec 4, 20255% stakeBlackRock, Inc. reported a passive stake (13G) of 10.8%
11. Dec 4, 2025InsiderOfficer sold ~$996K of FIX shares in the open market
12. Dec 4, 2025Congress · 1 personMembers of Congress: 2 purchases
13. Dec 16, 2025Company filing · Form 8-K · Executive change, Reg FDChanged a top executive or board member, and shared information with investors“On December 19, 2025, Comfort Systems USA, Inc. (the “Company”) announced that Trent T. McKenna will transition from his current role as the Company’s Executive Vice President and Chief Operating Officer to the role of Company President and Chief Operating Officer, effective January 1, 2026.”

How to read SEC Form 4

Form 4 is the filing that officers, directors and owners of more than 10% of a US-listed company must send to the SEC within two business days after they buy, sell or otherwise change their holding of the company's stock.

Full guide: What is an SEC Form 4?

What else is on file for Comfort Systems USA

For Comfort Systems USA, OQRO holds 4 insider filings (SEC Form 4 or Form 144), 1 Congress trade report and 37 fund holdings reports (13F) dated in the last 90 days.

These are records OQRO holds, counted by their date, not a measure of how much trading took place. Routine paperwork such as option exercises and tax withholding is left out. Everything for the company is on its FIX page.

Other recent filings by William J Sandbrook, Director

• SEC Form 4 at Comfort Systems USA (FIX)Apr 30, 2026
• SEC Form 4 at Comfort Systems USA (FIX)Feb 26, 2026
• SEC Form 4 at Comfort Systems USA (FIX)Sep 10, 2025
• SEC Form 4 at Comfort Systems USA (FIX)Sep 10, 2025
• SEC Form 4 at Comfort Systems USA (FIX)Aug 27, 2025

The full history of William J Sandbrook, Director is on the profile page.

How this filing works

• SEC Form 4
• Open-market purchase
• Rule 10b5-1 trading plans

Other disclosures at Comfort Systems USA

• SEC Form 4Aug 27, 2026
• SEC Form 4Aug 18, 2026
• SEC Form 13F-HRAug 14, 2026
• SEC Form 13F-HRAug 14, 2026
• SEC Form 13F-HRAug 14, 2026
• SEC Form 13F-HRAug 14, 2026

Everything OQRO holds on this company is on its FIX page.