William J. Sandbrook

Insider Reports History

Location
C/O U.S. Concrete, Inc., 331 N. Main Street, Euless, TX
Signature
/s/ Rachel R. Eslicker, Attorney-in-Fact
All insider transactions
Transactions in reports broken out by “transaction date” reported in original SEC filing, see here for transactions aggregated across transaction date

Holdings reported by William J. Sandbrook:

Stock Role Class Num Shares Value Price $ Report Date Ownership
COMFORT SYSTEMS USA INC Director Common Stock 13.2K $9.08M $689.58 Aug 25, 2025 Direct
Knife River Corp Director Common Stock 5.7K $533K $93.58 May 22, 2025 Direct
Zapata Computing Holdings Inc. 10%+ Owner Common Stock 1.62M Jul 18, 2024 Direct

Insider Reports Filed by William J. Sandbrook

Symbol Company Period Transactions Value $ Form Type Date Filed Role
FIX COMFORT SYSTEMS USA INC Sep 9, 2025 3 -$1.08M 4 Sep 10, 2025 Director
FIX COMFORT SYSTEMS USA INC Aug 25, 2025 1 -$483K 4 Aug 27, 2025 Director
KNF Knife River Corp May 22, 2025 1 $0 4 May 27, 2025 Director
FIX COMFORT SYSTEMS USA INC May 16, 2025 1 $0 4 May 20, 2025 Director
ZPTA Zapata Computing Holdings Inc. Jul 18, 2024 0 $0 3 Jul 25, 2024 10%+ Owner
FIX COMFORT SYSTEMS USA INC May 17, 2024 1 $0 4 May 21, 2024 Director
KNF Knife River Corp May 15, 2024 2 $55.6K 4 May 16, 2024 Director
KNF Knife River Corp Nov 15, 2023 1 $87.4K 4 Nov 16, 2023 Director
FIX COMFORT SYSTEMS USA INC Nov 9, 2023 1 -$926K 4 Nov 13, 2023 Director
FIX COMFORT SYSTEMS USA INC Sep 12, 2023 1 -$1.41M 4 Sep 14, 2023 Director
KNF Knife River Corp May 31, 2023 0 $0 3 Jun 1, 2023 Director
FIX COMFORT SYSTEMS USA INC May 16, 2023 1 $0 4 May 17, 2023 Director
FIX COMFORT SYSTEMS USA INC Jun 2, 2022 3 $0 4 Jun 6, 2022 Director
FIX COMFORT SYSTEMS USA INC May 17, 2022 1 $0 4 May 19, 2022 Director
FIX COMFORT SYSTEMS USA INC May 18, 2021 1 $0 4 May 20, 2021 Director