| 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 | 2025-08-27 | 0001527678 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | FIX | Common Stock | Sale | -$483K | -700 | -5.05% | $689.58 | 13.2K | Aug 25, 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. |