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Katherine Elizabeth Dietze

CIK 1082841 · last filed 2026-03-13

Katherine Elizabeth Dietze is a corporate insider who has filed 51 SEC Form 4 insider transactions across 6 companies since 2008. The most recent filing, for MATW, was dated Mar 13, 2026. Current disclosed insider exposure totals $1.4M 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

$1.42M

Companies

6

Total Filings

51

Lifetime Open-Market Net

$0

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
MATW Director 49,103 $28.85 $1.42M $0 21 2026-03-13
COWEN INC. (COWNL) Delisted Director 0 $25.22 $0 $0 4 2023-03-01
COWEN INC. (COWNZ) Delisted Director 75,996 $25.19 $1.91M $0 3 2020-07-28
COWEN INC. (COWN.L) Delisted Director 186,693 — — $0 2 2016-06-29
COWEN INC. (COWN) Delisted Director 30,558 $38.99 $1.19M $0 3 2013-05-06
LAB Director 0 $0.79 $0 $0 4 2011-06-30

Recent Filings

51 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
2026-03-13 MATW Grant (A) — $0 EDGAR
2026-03-10 MATW Exer (M) +4,668 $0 EDGAR
2025-03-14 MATW Grant (A) — $0 EDGAR
2025-03-11 MATW Exer (M) +3,777 $0 EDGAR
2024-03-11 MATW Mixed +4,263 $0 EDGAR
2023-03-13 MATW Mixed +2,988 $0 EDGAR
2023-03-01 COWEN INC. (COWNL) Delisted Disp (D) −85,519 -$3.34M EDGAR
2022-09-01 COWEN INC. (COWNL) Delisted Grant (A) +5,831 $0 EDGAR
2022-03-14 MATW Mixed +5,639 $0 EDGAR
2021-10-29 COWEN INC. (COWNL) Delisted Grant (A) +3,587 $0 EDGAR
Showing 1–10 of 51
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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.