William J. Sandbrook
William J. Sandbrook: Director at Comfort Systems USA. What William J. Sandbrook holds in an AI or semiconductor company tracked on Silicon Floor, from their SEC filings, broken down: the shares held and how, then any restricted shares, options or other rights declared.
Comfort Systems USA (FIX)
William J. Sandbrook holds 7,771 Comfort Systems USA shares (0.02% of the company), worth about $13.1M at the last price, according to the Form 4 of May 18, 2026.
- Shares held: 7,771 (0.02%), $13.1M — Held in their own name.
Declarations
- Comfort Systems USA (FIX) — Form 4 of May 18, 2026: grant or award of 105; 7,771 shares after 0001527678-26-000006
- Comfort Systems USA (FIX) — Form 4 of Apr 29, 2026: open-market sale of 1,500 at $1,732.67; 7,666 shares after 0001527678-26-000004
- Comfort Systems USA (FIX) — Form 4 of Feb 24, 2026: open-market sale of 2,500 at $1,443.32; 9,166 shares after 0001527678-26-000002
- Comfort Systems USA (FIX) — Form 4 of Sep 10, 2025: open-market sale of 600 at $708.97; open-market sale of 100 at $706.00; 11,666 shares after 0001415889-25-024105
- Comfort Systems USA (FIX) — Form 4 of Aug 25, 2025: open-market sale of 700 at $689.58; 13,166 shares after 0001415889-25-023112
- Comfort Systems USA (FIX) — Form 4 of May 16, 2025: grant or award of 342; 13,866 shares after 0001415889-25-013756
Sources: SEC Schedules 13D and 13G (stakes above 5%, which count everything a person votes or can acquire within 60 days) and Forms 3, 4 and 5 (the shares a director, officer or 10% owner holds, filed within two business days of each trade). Values at the last price.
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