Comfort Systems USA, Inc.
US ˙ NYSE ˙ US1999081045

SecurityFIX / Comfort Systems USA, Inc.
InsiderWilliam J Sandbrook
This page shows the track record and history of SANDBROOK WILLIAM J insider trades in Comfort Systems USA, Inc.. The SEC defines Insiders as officers, directors, or significant investors (greater than 10% ownership) in a company. It is illegal for insiders to make trades in their companies based on material, non-public information ("MNPI"). This does not mean it is illegal for them to make any trades in their own companies. However, they must report all trades to the SEC via a Form 4.
Insider Purchases - Short Term Profit Analysis

In this section, we analyze the profitability of every unplanned, open-market insider purchase made by William J Sandbrook in FIX / Comfort Systems USA, Inc.. This analysis helps to understand if the insider consistently generates abnormal returns, and is worth following. This analysis is for one-year following each trade, and the results are theoretical.

The following table shows the most recent open market purchases that were not part of an automatic trading plan.

Trade Date Reported
Shares		 Reported
Price		 Adjusted
Shares		 Adjusted
Price		 Cost Basis Days to
Max		 Price at
Max		 Max
Profit ($)		 Max Return (%)
2018-05-29 5,734 46.4200 5,734 46.4200 266,172 163 59.2000 73,281 27.53
2018-05-25 4,266 45.8700 4,266 45.8700 195,681

Adjusted Price is the split-adjusted price. Adjusted Shares is the split-adjusted shares.

FIX / Comfort Systems USA, Inc. Insider Trades
Insider Sales - Short Term Loss Analysis

In this section, we analyze the short-term loss avoidance of every unplanned, open-market insider sale made by William J Sandbrook in FIX / Comfort Systems USA, Inc.. A consistent pattern of loss avoidance may suggest that future sale transactions may predict declines in price. This analysis is for one-year following each trade, and the results are theoretical.

The following table shows the most recent open market purchases that were not part of an automatic trading plan.

Trade Date Reported
Shares		 Reported
Price		 Adjusted
Shares		 Adjusted
Price		 Cost Basis Days to
Min		 Price at
Min		 Max Loss
Avoided ($)		 Max Loss
Avoided (%)
2026-04-29 1,500 1,732.6667 1,500 1,732.6667 2,599,000 0 1724.1400 -12,790 -0.49
2026-02-24 2,500 1,443.3177 2,500 1,443.3177 3,608,294
2025-09-10 800 733.5583 800 733.5583 586,847
2025-09-09 600 708.9700 600 708.9700 425,382
2025-09-09 100 706.0000 100 706.0000 70,600
2025-08-25 700 689.5750 700 689.5750 482,702
2023-11-09 5,000 185.1855 5,000 185.1855 925,928
2023-09-12 7,500 187.5152 7,500 187.5152 1,406,364

Adjusted Price is the split-adjusted price. Adjusted Shares is the split-adjusted shares.

FIX / Comfort Systems USA, Inc. Insider Trades
Insider Transaction History
File
Date		 Trade
Date		 Form Insider Ticker Security Title Code 10b5-1 Direct Exercise
Price		 Unit
Price		 Units
Changed		 Value
Changed (1K)		 Remaining
Options		 Remaining
Shares
2026-05-19 2026-05-18 4 SANDBROOK WILLIAM J FIX Common Stock A - Award D 105 7,771
2026-04-30 2026-04-29 4 SANDBROOK WILLIAM J FIX Common Stock S - Sale D 1,732.6667 -1,500 -2,599 7,666
2026-02-26 2026-02-24 4 SANDBROOK WILLIAM J FIX Common Stock S - Sale D 1,443.3177 -2,500 -3,608 9,166
2025-09-10 2025-09-10 4 SANDBROOK WILLIAM J FIX Common Stock S - Sale D 733.5583 -800 -587 11,666
2025-09-10 2025-09-09 4 SANDBROOK WILLIAM J FIX Common Stock S - Sale D 706.0000 -100 -71 12,466
2025-09-10 2025-09-09 4 SANDBROOK WILLIAM J FIX Common Stock S - Sale D 708.9700 -600 -425 12,566
2025-08-27 2025-08-25 4 SANDBROOK WILLIAM J FIX Common Stock S - Sale D 689.5750 -700 -483 13,166
2025-05-20 2025-05-16 4 SANDBROOK WILLIAM J FIX Common Stock A - Award D 342 13,866
2024-05-21 2024-05-17 4 SANDBROOK WILLIAM J FIX Common Stock A - Award D 498 13,524
2023-11-13 2023-11-09 4 SANDBROOK WILLIAM J FIX Common Stock S - Sale D 185.1855 -5,000 -926 13,026
2023-09-14 2023-09-12 4 SANDBROOK WILLIAM J FIX Common Stock S - Sale D 187.5152 -7,500 -1,406 18,026
2023-05-17 2023-05-16 4 SANDBROOK WILLIAM J FIX Common Stock A - Award D 1,065 25,526
2022-06-06 2022-06-02 4 SANDBROOK WILLIAM J By Member of Household FIX Common Stock G - Gift I 170 170
2022-06-06 2022-06-02 4 SANDBROOK WILLIAM J FIX Common Stock G - Gift D -170 24,291
2022-06-06 2022-06-02 4 SANDBROOK WILLIAM J FIX Common Stock G - Gift D -850 24,461
2022-05-19 2022-05-17 4 SANDBROOK WILLIAM J FIX Common Stock A - Award D 1,869 25,311
2021-05-20 2021-05-18 4 SANDBROOK WILLIAM J FIX Common Stock A - Award D 1,939 23,442
2020-05-21 2020-05-19 4 SANDBROOK WILLIAM J FIX Common Stock A - Award D 4,788 21,503
2019-05-23 2019-05-21 4 SANDBROOK WILLIAM J FIX Common Stock A - Award D 3,262 16,715
2018-05-29 2018-05-29 4 SANDBROOK WILLIAM J FIX Common Stock P - Purchase D 46.4200 5,734 266 13,453
2018-05-29 2018-05-25 4 SANDBROOK WILLIAM J FIX Common Stock P - Purchase D 45.8700 4,266 196 7,719
2018-05-23 2018-05-22 4 SANDBROOK WILLIAM J FIX Common Stock A - Award D 3,453 3,453
2018-04-12 3 SANDBROOK WILLIAM J FIX Common Stock D 0
P
Compra de mercado aberto ou privada de ativo não-derivativo ou derivativo
S
Venda de mercado aberto ou privada de ativo não-derivativo ou derivativo
A
Concessão, premiação, ou outra aquisição de ativos da empresa (como uma opção)
C
Conversão de derivativo
D
Venda ou transferência de ativos de volta para a empresa
F
Pagamento do preço de exercício ou responsabilidade fiscal utilizando parte dos ativos recebidos da empresa
G
Doação de ativos pelo ou para o insider
K
Swaps de capital e transações de hedge similares
M
Exercício ou conversão de ativo derivativo recebido da empresa (como uma opção)
V
Uma transação voluntariamente reportada no Formulário 4
J
Outro (acompanhado de uma nota explicativa descrevendo a transação)