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sellWeak

Gregory R. Chemnitz sold $98k of MTRN

VP General Counsel & Secretary at MATERION Corp. 864 shares at an average of $113.23, traded Nov 4, 2025, filed Nov 6, 2025.

Warning score
10
Value
$98k
864 shares
Holdings after
10,376
-8% from before
From 52-week low
+55%
low $71.69, close $111.13
From 52-week high
-17%
high $133.94, as of Nov 4, 2025

Score components

  • Role
    Officer
    +15
  • Trade size
    $98k at market
    +10
  • Share of holdings sold
    Sold 7.7% of holdings
    0
  • Cluster
    No other insider selling within 14 days
    0
  • Exercise and sell
    Shares came from an option exercise in the same filing
    -15

What happened after comparable sells

Same side and tier, against the S&P 500, at 1, 3 and 6 months. Shown to Pro users; the whole table is on the backtest page.

This signal so far: 1m +8.9%, 3m +26.8%, 6m +66.3%.

Price around the trade, and since

From a quarter before the trade to today. The arrow is the trade, the circle the day the filing reached EDGAR, which is the first day anyone outside could act; the dotted line is the S&P 500 rebased to that day's close.

MTRNOct 12, 2026 · close 270.15
Since filing Nov 6, 2025: +135.4%SPY +17.3% · excess +118.1%

Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value; the dashed line is the close on the filing day, the dotted line SPY rebased to it.Charts by TradingView Lightweight Charts™

Rows in this filing

Every transaction in Form 4 0001519910-25-000008, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
Nov 4, 2025MOption exercise
Common Stock
+1,459$68.82$100k11,835Nov 6, 2025
Nov 4, 2025FTax withholding
Common Stock
-1,053$112.96$119k10,782Nov 6, 2025
Nov 4, 2025MOption exercise
Common Stock
+2,254$80.85$182k13,036Nov 6, 2025
Nov 4, 2025FTax withholding
Common Stock
-1,796$113.13$203k11,240Nov 6, 2025
Nov 4, 2025SOpen-market sale
Common Stock
-864$113.23$98k10,376Nov 6, 2025
Nov 4, 2025MOption exercise
Stock Appreciation Rightsderivative
-1,459$0.00$00Nov 6, 2025
Nov 4, 2025MOption exercise
Stock Appreciation Rightsderivative
-2,254$0.00$00Nov 6, 2025

Related signals

Other insiders at MATERION Corp and this insider’s other filings.

ScoreCompanyInsiderValueHoldingsFiled
41Moderate
MTRNsell 2
MATERION Corp
Emily M Liggett
director
$235k
1,012 shares
-24%
45Moderate
MTRNsell 2
MATERION Corp
Vinod M Khilnani
director
$470k
2,000 shares
-15%
45Moderate
MTRNsell 3
MATERION Corp
Shelly Marie Chadwick
Vice President, Finance & CFO
$500k
1,705 shares
-10%
60Notable
MTRNsell 3
MATERION Corp
Darlene J. S. Solomon
director
$1.1M
3,705 shares
-12%
55Moderate
MTRNsell 3
MATERION Corp
Jugal K. Vijayvargiya
President and CEO
$7.1M
24,336 shares
-17%
47Moderate
MTRNsell
MATERION Corp
Robert J Phillippy
director
$765k
3,500 shares
-49%
46Moderate
MTRNsell 2
MATERION Corp
Vinod M Khilnani
director
$517k
2,500 shares
-16%
28Weak
MTRNsell 2
MATERION Corp
Shelly Marie Chadwick
Vice President, Finance & CFO
$237k
1,192 shares
-7%
23Weak
MTRNsell 510b5-1
MATERION Corp
Shelly Marie Chadwick
Vice President, Finance & CFO
$406k
2,539 shares
-14%
46Moderate
MTRNsell 5
MATERION Corp
Gregory R. Chemnitz
VP General Counsel & Secretary
$711k
4,517 shares
-43%

Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.

Gregory R. Chemnitz sold $98k of MTRN | InsiderTell