Updated: May 19, 2026

William J Sandbrook

FIXCOMFORT SYSTEMS USA INCSEC CIK: 0001527678
Estimated Net Worth
$49.4 Million
Last Updated: May 19, 2026 11:39 PM EST

Transaction Summary

Total Transactions102
Buy-Sell Ratio0.43
Buy Transactions28
Sell Transactions65

Transaction Volume

Total Volume$37.32M
Net Volume-$32.78M
Buy Volume$2.27M
Sell Volume$35.05M

Trade Analysis

AVG Trade Size$365.88K
Largest Trade$3.61M
Most Active MonthMar
Most Active Year2017

Trading Sentiment

OverallBearish
Recent TradeSelling
Last 90 Days0 Trades
ConvictionNone

Net Worth & Trading Activity Over Time

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Monthly Trading Pattern

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Past Insider Trading and Trends

William J Sandbrook has an estimated net worth of $49.4 Million. This is based on reported shares across multiple companies, which include Zapata Computing Holdings Inc., Knife River Corp, COMFORT SYSTEMS USA INC, U.S. CONCRETE, INC., and Andretti Acquisition Corp. II.



2011 was William J Sandbrook's most active year for acquiring shares with 8 total transactions. William J Sandbrook's most active month to acquire stocks was the month of April. 2016 was William J Sandbrook's most active year for disposing of shares, totalling 40 transactions. William J Sandbrook's most active month to dispose stocks was the month of February. 2020 saw William J Sandbrook paying a total of $419,400.00 for 59,103 shares, this is the most they've acquired in one year. In 2026 William J Sandbrook cashed out on 4,000 shares for a total of $6,207,294.30, their largest year based on trade value.

Holdings & Transactions

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