William J. Sandbrook sold Comfort Systems USA Inc. ($FIX) shares on the open market five times in the last 365 days, totaling about $5.2 million. His most recent sale occurred on February 24, 2026. These sales rank 1,886th among 11,678 individual insiders in our database, where the average is $8.6 million across about 6.4 transactions. Sandbrook made no open market purchases during this period.
| Transaction Date | Company | Ticker | Insider Name | Title | Transaction Type | Security | Shares | Price | Shares Owned Following | Total Shares Outstanding | % of Owned | % of Outstanding |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Feb. 24, 2026 | COMFORT SYSTEMS USA INC | $FIX | SANDBROOK WILLIAM J | Not found | S | Common Stock | 2500 | $1443.32 | 9,166.0000 | 35,413,000 | 21.43% | 0.01% |
| Sept. 9, 2025 | COMFORT SYSTEMS USA INC | $FIX | SANDBROOK WILLIAM J | Not found | S | Common Stock | 600 | $708.97 | 12,566.0000 | 35,369,000 | 4.56% | 0.00% |
| Sept. 9, 2025 | COMFORT SYSTEMS USA INC | $FIX | SANDBROOK WILLIAM J | Not found | S | Common Stock | 100 | $706.00 | 12,466.0000 | 35,369,000 | 0.80% | 0.00% |
| Sept. 10, 2025 | COMFORT SYSTEMS USA INC | $FIX | SANDBROOK WILLIAM J | Not found | S | Common Stock | 800 | $733.56 | 11,666.0000 | 35,369,000 | 6.42% | 0.00% |
| Aug. 25, 2025 | COMFORT SYSTEMS USA INC | $FIX | SANDBROOK WILLIAM J | Not found | S | Common Stock | 700 | $689.58 | 13,166.0000 | 35,369,000 | 5.05% | 0.00% |
| May 22, 2025 | Knife River Corp | $KNF | SANDBROOK WILLIAM J | Director | A | Common Stock | 1551 | $0.00 | 5,695.0000 | 57,083,497 | 37.43% | 0.00% |
| May 16, 2025 | COMFORT SYSTEMS USA INC | $FIX | SANDBROOK WILLIAM J | Not found | A | Common Stock | 342 | $0.00 | 13,866.0000 | 35,605,000 | 2.53% | 0.00% |
| May 17, 2024 | COMFORT SYSTEMS USA INC | $FIX | SANDBROOK WILLIAM J | Not found | A | Common Stock | 498 | $0.00 | 13,524.0000 | 35,828,000 | 3.82% | 0.00% |
| May 15, 2024 | Knife River Corp | $KNF | SANDBROOK WILLIAM J | Director | A | Common Stock | 1905 | $0.00 | 3,424.0000 | 57,040,840 | 125.41% | 0.00% |
| May 15, 2024 | Knife River Corp | $KNF | SANDBROOK WILLIAM J | Director | A | Common Stock | 720 | $77.19 | 4,144.0000 | 57,040,840 | 21.03% | 0.00% |