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JOHN C PLANT

CIK 1136562 · Executive Chairman & CEO · last filed 2026-05-12

JOHN C PLANT is an Executive Chairman & CEO who has filed 106 SEC Form 4 insider transactions across 5 companies since 2007. The most recent filing, for MAS, was dated May 12, 2026. Across all open-market trades the lifetime net is −$293.9M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $874.1M 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

$874.11M

Companies

5

Total Filings

106

Lifetime Open-Market Net

-$293.87M

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
MAS Director 50,574 $81.77 $4.14M -$255.8K 16 2026-05-12
JBL Director 6,500 $304.89 $1.98M -$8.63M 11 2026-04-29
HWM Executive Chairman & CEO 3,022,553 $286.67 $866.48M -$119.59M 39 2026-02-18
GTES Director 57,493 $26.45 $1.52M $0 2 2019-02-26
ZF TRW AUTOMOTIVE HOLDINGS CORP (TRW) Delisted Chairman, President & CEO 0 — — -$165.39M 36 2015-05-15

Recent Filings

106 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
2026-05-12 MAS Grant (A) +2,650 $0 EDGAR
2026-04-29 JBL Grant (A) +600 $0 EDGAR
2026-02-18 HWM Grant (A) +22,333 $0 EDGAR
2025-07-02 HWM Grant (A) +255,363 $0 EDGAR
2025-05-13 MAS Grant (A) +2,900 $0 EDGAR
2025-05-12 HWM Notice (144) −800,000 -$125.93M EDGAR
2025-05-12 HWM Sell (S) −800,000 -$125.57M EDGAR
2025-02-20 HWM Grant (A) +41,268 $0 EDGAR
2025-01-27 JBL Mixed −48,700 -$8.63M EDGAR
2025-01-24 JBL Notice (144) −50,000 -$8.63M EDGAR
Showing 1–10 of 106
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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.