SANDBROOK WILLIAM J
SEC Form 4 insider trading activity
SANDBROOK WILLIAM J has filed 5 SEC Form 4 filings (7 transaction rows) across 2 companies, including KNF, FIX, with disclosures dating back to 2025. 4 of those filings fall inside the rolling window. Most recent filing: May 21, 2026.
On the most recent filing, SANDBROOK WILLIAM J is listed as Director at COMFORT SYSTEMS USA INC. Inside the rolling window, SANDBROOK WILLIAM J reported no open-market purchases and 2 open-market sales totaling $6.2M in FIX. The largest disclosed transaction in the window is a sale of 2,500 FIX shares on Feb 24, 2026, worth $3.6M.
Companies traded
Other insiders at KNF
Insider Buying
$0
reported purchases (SEC code P)
Insider Selling
$6.2M
reported sales (SEC code S)
Companies
2
in the rolling window
Earlier trades
Open-market purchases and sales filed before the rolling 365-day window, kept from the original Form 4 filings.
Frequently asked questions
How many SEC Form 4 filings has SANDBROOK WILLIAM J made?
SANDBROOK WILLIAM J has filed 5 SEC Form 4 filings (7 transaction rows) across 2 companies, including KNF, FIX since 2025.
Which companies does SANDBROOK WILLIAM J trade?
SANDBROOK WILLIAM J has filed SEC Form 4 disclosures for 2 companies, including KNF, FIX.
When was SANDBROOK WILLIAM J's most recent SEC Form 4 filing?
SANDBROOK WILLIAM J's most recent SEC Form 4 filing on Tracefour is dated May 21, 2026.
What is SANDBROOK WILLIAM J's total buy and sell value in the current window?
Inside the rolling retention window, SANDBROOK WILLIAM J bought $0 and sold $6.2M based on SEC Form 4 filings.
What was SANDBROOK WILLIAM J's largest disclosed transaction?
The largest disclosed transaction in the current window is a sale of 2,500 FIX shares on 2026-02-24, worth $3.6M, per SEC Form 4 filings.