| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| SANDBROOK WILLIAM J | Director | C/O COMFORT SYSTEMS USA, INC., 675 BERING DRIVE, SUITE 400, HOUSTON | /s/ Rachel R. Eslicker, Attorney-in-Fact | 10 Sep 2025 | 0001527678 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | FIX | Common Stock | Sale | $425,382 | -600 | -4.6% | $708.97 | 12,566 | 09 Sep 2025 | Direct | F1, F2 |
| transaction | FIX | Common Stock | Sale | $70,600 | -100 | -0.8% | $706.00 | 12,466 | 09 Sep 2025 | Direct | F1, F2 |
| transaction | FIX | Common Stock | Sale | $586,847 | -800 | -6.4% | $733.56 | 11,666 | 10 Sep 2025 | Direct | F1, F2 |
| Id | Content |
|---|---|
| F1 | 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. |
| F2 | Shares held directly by the Reporting Person, including 170 shares held indirectly by the Reporting Person. |