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Thomas W. Hill

CIK 1440948 · President & CEO · last filed 2026-05-21

Thomas W. Hill is a President & CEO who has filed 82 SEC Form 4 insider transactions across 3 companies since 2008. The most recent filing, for KNF, was dated May 21, 2026. Across all open-market trades the lifetime net is −$41.3M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $428.9K across reported positions.

"Disclosed insider exposure" sums this person's most-recently-reported share counts across each company they're an insider in, multiplied by the current underlying price. It is not net worth — it misses retail holdings, private investments, real estate, index funds, and any company where the person isn't an SEC-reporting insider. For informational purposes only.

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Disclosed Exposure

$428.9K

Companies

3

Total Filings

82

Lifetime Open-Market Net

-$41.30M

Holdings By Company

Latest on-record share count from this person's most recent non-derivative Form 4 transaction in each company. Disclosed exposure = shares × current underlying price.
Symbol Role Shares Price Disclosed Exposure Lifetime OM Net Filings Latest Filed
KNF Director 5,496 $67.52 $371.1K $0 3 2026-05-21
Summit Materials, Inc. (SUM) Delisted President & CEO 255,339 $52.49 $13.40M -$41.30M 74 2020-07-22
ASTE Director 1,344 $43.04 $57.8K $0 5 2009-07-27

Recent Filings

82 filings
Insider activity across all companies, newest first. Form 4 rows are post-trade confirmations (buys, sells, grants, exercises). Notice (144) rows are pre-trade notices of intent to sell restricted or control stock under Rule 144 — they may not all execute. Compare adjacent dates to see which notices became actual sales.
Filed Symbol Action Net Shares Net $ Link
2026-05-21 KNF Grant (A) +2,040 $0 EDGAR
2025-05-27 KNF Grant (A) +1,551 $0 EDGAR
2024-05-16 KNF Grant (A) +1,905 $0 EDGAR
2020-07-22 Summit Materials, Inc. (SUM) Delisted Mixed — $0 EDGAR
2020-03-03 Summit Materials, Inc. (SUM) Delisted Mixed +63,198 -$396.9K EDGAR
2019-03-04 Summit Materials, Inc. (SUM) Delisted Mixed +20,806 -$113.9K EDGAR
2019-02-26 Summit Materials, Inc. (SUM) Delisted Mixed +10,736 -$64.0K EDGAR
2019-02-19 Summit Materials, Inc. (SUM) Delisted Buy (P) +31,250 $507.8K EDGAR
2018-07-20 Summit Materials, Inc. (SUM) Delisted Sell (S) −12,500 -$326.2K EDGAR
2018-07-05 Summit Materials, Inc. (SUM) Delisted Sell (S) −12,500 -$328.4K EDGAR
Showing 1–10 of 82
Page 1 of 9
Form 4 codes: P = open-market purchase · S = open-market sale · A = grant/award · M = option exercise · F = tax withholding at vest · G = bona-fide gift · D = disposition to issuer · J = other (see filing footnote). Only P / S codes carry directional signal.
Notice (144 / 144/A): Form 144 is a notice of intent to sell restricted/control stock under Rule 144, filed before the sale; 144/A is an amendment. Many notices are pre-scheduled under Rule 10b5-1 plans. A Form 4 with code S typically follows within a few days when the planned sale executes; missing follow-up Form 4s suggest the notice was cancelled or modified.