Reporting owner · CIK 0001519910

Chemnitz Gregory R.

Visual SEC Form 4 history across 1 companies, 9 transactions and 5 filings.

GC, SECYVP General Counsel & SecretaryMATERION Corp
Open-market mix
Latest filingSep 09, 2026, 08:59 PM
Filings5Form 4 records
Buying$00 purchases
Selling$00 sales
Net value$0Buys minus sells
Companies13 securities
Most recentSep 04, 2026grant

Open-market buy performance

90-day forward return on this insider's open-market purchases

90d forward
Forward return is not available yet

We compute this from each buy's stock performance 90 days after the transaction. The price history is still being populated for this insider's their open-market buys, so the average and median will appear here once the daily price refresh has covered the relevant trading days.

Monthly open-market activity

Reported purchase and sale transaction counts

Buys Sells
No open-market purchases or sales in this history.

Net value flow

Buys minus sells

Feb 25
$0
Mar 25
$0
Jan 26
$0
Feb 26
$0
Sep 26
$0

Transaction texture

Ownership and ticket size

Average P/S size—
Median P/S size—
Direct9
Indirect0
Sep 04, 2026grant

Filing-only signals

Deterministic matches in this insider's history

Derivative Transactionfiling-context4Direct Ownershipfiling-context8Large Holdings Increaseholdings2Large Holdings Reductionholdings1

Latest Form 4 facts

Quick context from source filings

Latest transaction

No latest transaction fact is available.

Latest buy

No open-market insider purchase is available.

Latest sale

No open-market insider sale is available.

Associated companies

Visual map of known reporting history

MTRNMATERION Corp9 transactions · latest Sep 09, 2026, 08:59 PM
TickerInsiderRoleTypeSharesValueCodeSignals90d returnFiledTrans date
MTRNChemnitz Gregory R.
GCSECY
grant2$0A
Derivative Transaction Direct Ownership
0.0%09/0909/04
MTRNChemnitz Gregory R.
GCSECY
grant2.19k$0A
Direct Ownership
+32.2%02/1302/12
MTRNChemnitz Gregory R.
GCSECY
grant98$0A
Derivative Transaction Direct Ownership
+34.1%02/0301/31
MTRNChemnitz Gregory R.
GCSECY
grant3.05k$0A
Derivative Transaction Direct Ownership Large Holdings Increase
—03/04/202503/01/2025
MTRNChemnitz Gregory R.
GCSECY
grant2.06k$0A
Derivative Transaction Direct Ownership Large Holdings Increase
—03/04/202503/01/2025
MTRNChemnitz Gregory R.
GCSECY
exercise2.67k$0M
Derivative Transaction Direct Ownership Large Holdings Reduction
—03/04/202503/01/2025
MTRNChemnitz Gregory R.
GCSECY
withholding1.35k-$11.8MF
Direct Ownership
—03/04/202503/03/2025
MTRNChemnitz Gregory R.
GCSECY
exercise2.67k$0M
Direct Ownership
—03/04/202503/01/2025
MTRNChemnitz Gregory R.
GCSECY
grant2.02k$0A
Direct Ownership
—02/18/202502/13/2025

Chemnitz Gregory R. Insider Activity FAQ

SEC Form 4 context

Who is Chemnitz Gregory R.?

Chemnitz Gregory R. is a reporting owner in SEC Form 4 filings with reporting owner CIK 0001519910.

Which companies has Chemnitz Gregory R. reported transactions for?

MATERION Corp

When was Chemnitz Gregory R.'s latest insider buy?

No open-market insider purchase is available for this period.

When was Chemnitz Gregory R.'s latest insider sale?

No open-market insider sale is available for this period.

Where can I see the original SEC filings?

Each transaction row links directly to the source SEC filing so the reported Form 4 details can be reviewed.

Are performance metrics included?

This version does not calculate win rates, forward returns, benchmark-adjusted returns, or high-conviction scores.