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Dirk A Kempthorne

CIK 1463021 · last filed 2026-04-17

Dirk A Kempthorne is a corporate insider who has filed 126 SEC Form 4 insider transactions across 3 companies since 2009. The most recent filing, for FMC, was dated Apr 17, 2026. Across all open-market trades the lifetime net is −$1.1M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $1.1M 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

$1.05M

Companies

3

Total Filings

126

Lifetime Open-Market Net

-$1.08M

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
FMC Director 56,912 $10.69 $608.1K $103.9K 89 2026-04-17
OLYMPIC STEEL INC (ZEUS) Delisted Director 0 $47.86 $0 -$39.4K 17 2026-02-17
RHI Director 11,712 $37.95 $444.4K -$1.15M 14 2025-10-30

Recent Filings

126 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
2026-04-17 FMC Grant (A) +202 $0 EDGAR
2026-03-30 RYZ Notice (144) −10,225 -$225.9K EDGAR
2026-02-17 OLYMPIC STEEL INC (ZEUS) Delisted Disp (D) −5,231 $0 EDGAR
2026-01-16 FMC Grant (A) +250 $0 EDGAR
2026-01-05 FMC Tax (F) −73 -$1.0K EDGAR
2025-10-30 RHI Sell (S) −6,505 -$187.8K EDGAR
2025-10-27 RHI Notice (144) −6,505 -$190.4K EDGAR
2025-10-20 FMC Grant (A) +773 $0 EDGAR
2025-07-21 FMC Grant (A) +614 $0 EDGAR
2025-05-15 RHI Grant (A) +5,907 $0 EDGAR
Showing 1–10 of 126
Page 1 of 13
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.