Sandbrook William J

Knife River Corporation · Director

Sandbrook William J is listed in public filings as director. This Sandbrook William J insider trading page organizes Form 4 disclosures, reported purchases and sales, transaction dates, share amounts, related issuers, and historical insider activity so readers can review the person's public trading record in one place. Companies and tickers connected to this insider trading profile include Knife River Corporation (KNF), and Comfort Systems USA Inc (FIX). Investors use Sandbrook William J's insider trading disclosures to study buying and selling patterns, position changes, company-specific activity, and the source evidence behind each reported transaction.

Latest Actions

CompanyHolding ValueLast TransactionAmountTransaction PriceCurrent Price
Knife River CorporationKNF--7.7k sharesGrant / ExerciseMay 20, 2026Disclosure amount unavailable2k shares----

Insider Trades History

CompanyHolding ValueLast TransactionAmountTransaction PriceCurrent Price
Comfort Systems USA IncFIX--7.8k sharesGrant / ExerciseMay 18, 2026Disclosure amount unavailable105 shares----
Comfort Systems USA IncFIX$13M7.7k sharesSellApr 29, 2026$2.6M1.5k shares$1,732.67--
Comfort Systems USA IncFIX$13M9.2k sharesSellFeb 24, 2026$3.6M2.5k shares$1,443.32--
Comfort Systems USA IncFIX$8.6M11.7k sharesSellSep 10, 2025$586.8K800 shares$733.56--
Comfort Systems USA IncFIX$8.9M12.6k sharesSellSep 9, 2025$425.4K600 shares$708.97--
Comfort Systems USA IncFIX$8.8M12.5k sharesSellSep 9, 2025$70.6K100 shares$706.00--
Comfort Systems USA IncFIX$9.1M13.2k sharesSellAug 25, 2025$482.7K700 shares$689.58--
Knife River CorporationKNF--5.7k sharesGrant / ExerciseMay 22, 2025Disclosure amount unavailable1.6k shares----
Comfort Systems USA IncFIX--13.9k sharesGrant / ExerciseMay 16, 2025Disclosure amount unavailable342 shares----