Gregory R. Chemnitz is VP General Counsel & Secretary at MATERION Corp (MTRN). Chemnitz has reported 14 insider filings with the SEC since 2024. The most recent filing was in June 2026.
Every role Gregory R. Chemnitz has reported on a Form 4, reconstructed from the filings themselves. Reporting insiders must state their relationship to the issuer (officer title, director seat, or 10% ownership) on every filing.
MATERION Corp (MTRN)1 filingUpdated Aug 30, 2026
Gregory R. Chemnitz is VP General Counsel & Secretary of MATERION Corp (MTRN). 14 SEC Form 4 filings on record going back to 2024, most recently on 16 June 2026. Most recent open-market trade: sold $540K of MTRN on 4 March 2026. Lifetime open-market sales: $2.36M.
Every recent SEC Form 4 transaction Gregory R. Chemnitz has reported, most recent first.
InsiderAlpha's records for Gregory R. Chemnitz go back to 2024: 14 primary Form 4 filings, an average of 4.7 per year. No transaction on record carries a Rule 10b5-1 flag - the filings look discretionary rather than pre-scheduled, which makes their timing more informative as a signal.
Insiders who reported open-market trades in the last 12 months at the companies Gregory R. Chemnitz files at. Multiple unrelated insiders buying the same stock within a short window, cluster buying, has historically been one of the strongest Form 4 signals.
Other corporate insiders with significant SEC Form 4 track records on InsiderAlpha:
Gregory R. Chemnitz is a corporate insider, tracked as VP General Counsel & Secretary of MATERION Corp (MTRN). InsiderAlpha holds 14 primary Form 4 filings for them, the earliest from 2024, updated as new SEC EDGAR filings are processed.
1 primary Form 4 filing in the last 90 days, covering 1 company.
Recorded transactions: 0 open-market purchases and 13 open-market sales ($2.36M) across all tracked filings.
All Form 4 filings, transaction values, and 10b5-1 plan flags are listed on this page and updated in real time as new SEC EDGAR filings are processed.
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$MTRN MATERION Corp3.4K shares @ $157.26$540K