| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| GEORGE WILLIAM III | CHIEF FINANCIAL OFFICER | C/O COMFORT SYSTEMS USA, INC., 9753 KATY FREEWAY, SUITE 700, HOUSTON | /s/ Rachel R. Eslicker, Attorney-in-Fact | 03 Dec 2025 | 0001205073 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | FIX | Common Stock | Tax liability | -$3.13M | -3.28K | -6.91% | $955.73 | 44.2K | 01 Dec 2025 | Direct | F1, F2 |
| transaction | FIX | Common Stock | Sale | -$4.19M | -4.37K | -9.89% | $958.88 | 39.8K | 01 Dec 2025 | Direct | F3 |
| transaction | FIX | Common Stock | Gift | $0 | -2K | -5.02% | $0.00 | 37.8K | 01 Dec 2025 | Direct | F4 |
| Id | Content |
|---|---|
| F1 | Reflects forfeited shares related to the second vesting of restricted stock units granted on November 14, 2023. |
| F2 | Price is based on the average of the high and low stock price on December 1, 2025. |
| F3 | 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. |
| F4 | This transaction represents a charitable donation. |