Comfort Systems USA
Builds and services mechanical, electrical and plumbing systems for complex US facilities.
$1,521.00
After-hours close+2.63 (+0.17%)
At close$1,518.38(−5.98%)
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Breakdown13F · Form 4
Institutions 386.04%Insiders 1.07%
A 13F quarter can total more than the shares outstanding — sub-advisers file the same block twice, and a filer's own share count can be a quarter stale. No split is drawn from it.
Shares outstanding 35.19M · Float 34.76M · 98.8% free float
Institutions13F, as of Jun 30, 2026
1,391 holders · 135.86M shares · 249 new positions · 748 increased · 481 reduced · 99 closed
| Holder | Shares | % outstanding | Chg q/q | Filed |
|---|---|---|---|---|
| BlackRock, Inc. | 3.40M | 9.65% | −115.2K | Aug 7, 2026 |
| Vanguard Capital Management LLC | 2.30M | 6.53% | +11.6K | Aug 13, 2026 |
| Vanguard Portfolio Management LLC | 1.87M | 5.30% | −15.0K | Aug 13, 2026 |
| FMR LLC | 1.66M | 4.72% | +210.3K | Aug 13, 2026 |
| State Street Corp | 1.54M | 4.37% | +65.3K | Aug 7, 2026 |
| Geode Capital Management, LLC | 1.15M | 3.27% | −87.3K | Aug 12, 2026 |
| AQR Capital Management LLC | 1.06M | 3.01% | −57.2K | Aug 14, 2026 |
| JPMorgan Chase & Co | 838.4K | 2.38% | −51.5K | Aug 12, 2026 |
Beneficial owners13D/G · 5% or more, as filed
| Holder | % of class | Shares | Form | Filed |
|---|---|---|---|---|
| BlackRock, Inc. | 8.30% | 2.92M | 13G | Jan 21, 2026 ↗ |
| Vanguard Capital Management | 7.49% | 2.63M | 13G | Apr 29, 2026 ↗ |
| Vanguard Portfolio Management | 5.37% | 1.89M | 13G | Apr 29, 2026 ↗ |
InsidersForm 4
| Insider | Role | Shares | % outstanding | Filed |
|---|---|---|---|---|
| Brian E. Lane | director, officer: CHIEF EXECUTIVE OFF. | 145.1K | 0.41% | Aug 27, 2026 |
| Franklin Myers | director | 67.1K | 0.19% | Aug 12, 2026 |
| William Iii George | officer: CHIEF FINANCIAL OFFICER | 30.3K | 0.09% | Aug 18, 2026 |
| Herman E. Bulls | director | 29.9K | 0.08% | May 19, 2026 |
| T. McKenna Trent | officer: PRESIDENT/CHIEF OPERATING OFF. | 22.3K | 0.06% | Apr 3, 2026 |
| Darcy Anderson | director | 18.1K | 0.05% | May 19, 2026 |
| Constance Ellen Skidmore | director | 12.7K | 0.04% | May 19, 2026 |
| Julie Shaeff | officer: CHIEF ACCOUNTING OFFICER | 12.6K | 0.04% | May 11, 2026 |
| Laura Finley Howell | officer: SVP & GENERAL COUNSEL | 7.9K | 0.02% | Dec 5, 2025 |
| William J. Sandbrook | director | 7.8K | 0.02% | May 19, 2026 |
11 people have not refiled in the last 18 months (589.3K shares), so they are not in the figure above
Latest trades
| Date | Insider | Type | Shares | Avg price | Owned after |
|---|---|---|---|---|---|
| Aug 26, 2026 | Brian E. Lanedirector, officer: CHIEF EXECUTIVE OFF. | Sale | 16,024 | $1,608.21 | 145,065 |
| Aug 17, 2026 | William Iii Georgeofficer: CHIEF FINANCIAL OFFICER | Sale | 2,554 | $1,859.65 | 30,250 |
| Aug 11, 2026 | Franklin Myersdirector | Sale | 4,000 | $1,693.92 | 8,495 |
| Aug 10, 2026 | Franklin Myersdirector | Sale | 3,500 | $1,690.47 | 58,615 |
| Jun 24, 2026 | Franklin Myersdirector | Sale | 6,700 | $1,954.47 | 62,115 |
| May 27, 2026 | Rhoman J. Hardydirector | Sale | 342 | $1,900.08 | 1,890 |
| May 11, 2026 | William Iii Georgeofficer: CHIEF FINANCIAL OFFICER | Sale | 1,000 | $2,020.97 | 32,804 |
| May 8, 2026 | William Iii Georgeofficer: CHIEF FINANCIAL OFFICER | Sale | 4,000 | $1,948.17 | 33,804 |
| May 11, 2026 | Julie Shaeffofficer: CHIEF ACCOUNTING OFFICER | Sale | 1,123 | $2,000.37 | 12,624 |
| May 7, 2026 | Franklin Myersdirector | Sale | 4,500 | $1,902.57 | 68,983 |
CongressHouse and Senate disclosures
Not reported.