Sandbrook William J
Knife River Corporation · Director
Sandbrook William J is listed in filings as Director at Knife River Corporation. This profile follows SEC Form 4 activity through May 21, 2026, including sale activity. Recent filings connect the profile to Knife River Corporation (KNF) and Comfort Systems USA Inc (FIX). The current snapshot covers public activity from May 20, 2025 to May 21, 2026. Reported amounts are shown as $2.6M to $586.8K. The page organizes purchases, sales, issuer links, reported share activity, and filing evidence for review as public disclosure data.
History Trades
| Company | Value | Action | Price | Last Price |
|---|---|---|---|---|
| $4M2.5k shares | SellFeb 24, 2026 | $1,443.32 | $1,722.18 | |
| $587k800 shares | SellSep 10, 2025 | $733.56 | $1,722.18 | |
| $425k600 shares | SellSep 9, 2025 | $708.97 | $1,722.18 | |
| $71k100 shares | SellSep 9, 2025 | $706.00 | $1,722.18 | |
| $483k700 shares | SellAug 25, 2025 | $689.58 | $1,722.18 |