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Gregory R. Chemnitz

CIK 1519910 · VP General Counsel & Secretary · last filed 2026-06-16

Gregory R. Chemnitz is a VP General Counsel & Secretary who has filed 128 SEC Form 4 insider transactions across 1 company since 2011. The most recent filing, for MTRN, was dated Jun 16, 2026. Across all open-market trades the lifetime net is −$6.9M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $2.6M 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

$2.64M

Companies

1

Total Filings

128

Lifetime Open-Market Net

-$6.93M

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
MTRN VP General Counsel & Secretary 11,283 $234.19 $2.64M -$6.93M 115 2026-06-16

Recent Filings

128 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
2026-06-16 MTRN Grant (A) — $0 EDGAR
2026-03-10 MTRN Mixed — -$721 EDGAR
2026-03-03 MTRN Notice (144) −4,517 -$710.6K EDGAR
2026-03-03 MTRN Mixed −2,642 -$978.7K EDGAR
2026-02-19 MTRN Sell (S) −4,000 -$628.4K EDGAR
2026-02-17 MTRN Notice (144) −4,000 -$628.4K EDGAR
2026-02-13 MTRN Grant (A) +2,196 $0 EDGAR
2026-02-03 MTRN Grant (A) — $0 EDGAR
2025-12-09 MTRN Grant (A) — $0 EDGAR
2025-11-06 MTRN Mixed — -$137.3K EDGAR
Showing 1–10 of 128
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.