DOUGLAS T DIETRICH

CIK 1408736 · CHAIRMAN AND CEO · last filed 2026-05-28

"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

$15.80M

Companies

2

Total Filings

86

Lifetime Open-Market Net

-$8.98M

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
KMTw Director 841 $0 9 2026-05-28
MTX CHAIRMAN AND CEO 202,276 $78.12 $15.80M -$8.98M 77 2026-05-18

Recent Filings · Page 2 of 9

86 filings
Form 4 transactions across all companies, newest first.
Filed Symbol Action Net Shares Net $ Link
2025-05-29 KMTw Grant (A) $0 EDGAR
2025-05-01 MTX Buy (P) +2,000 $103.1K EDGAR
2025-02-27 KMTw Grant (A) $0 EDGAR
2025-02-03 KMTw Grant (A) $0 EDGAR
2025-01-29 MTX Mixed +4,268 -$402.4K EDGAR
2025-01-28 MTX Mixed +4,972 -$465.6K EDGAR
2025-01-27 MTX Mixed +4,888 -$463.7K EDGAR
2025-01-23 MTX Grant (A) $0 EDGAR
2024-05-30 MTX Mixed -$1.40M EDGAR
2024-01-29 MTX Mixed +8,602 -$705.8K EDGAR
Showing 1120 of 86
Page 2 of 9
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.