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sellWeak cluster of 510b5-1 plan

Shelly Marie Chadwick sold $406k of MTRN

Vice President, Finance & CFO at MATERION Corp. 2,539 shares at an average of $160.06, traded Mar 3, 2026, filed Mar 3, 2026.

Warning score
23
Value
$406k
2,539 shares
Holdings after
15,243
-14% from before
From 52-week low
+125%
low $71.69, close $161.06
From 52-week high
-3%
high $166.38, as of Mar 3, 2026

Score components

  • Role
    CFO
    +22
  • Trade size
    $406k at market
    +16
  • Share of holdings sold
    Sold 14% of holdings
    +5
  • Cluster
    5 insiders selling within 14 days
    +15
  • Exercise and sell
    Shares came from an option exercise in the same filing
    -15
  • 10b5-1 plan
    Pre-scheduled under a 10b5-1 plan
    -20

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 -7.5%, 3m +42.7%, 6m +45.4%.

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 Mar 3, 2026: +67.7%SPY +15.3% · excess +52.5%

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 0001688289-26-000010, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
Mar 1, 2026MOption exercise
Common Stock10b5-1
+5,552$0.00$021,691Mar 3, 2026
Mar 2, 2026FTax withholding
Common Stock10b5-1
-3,909$166.59$651k17,782Mar 3, 2026
Mar 3, 2026SOpen-market sale
Common Stock10b5-1
-1,039$157.26$163k16,743Mar 3, 2026
Mar 3, 2026SOpen-market sale
Common Stock10b5-1
-1,500$162.00$243k15,243Mar 3, 2026
Mar 1, 2026MOption exercise
Restricted Stock Unitsderivative10b5-1
-5,552$0.00$08,886Mar 3, 2026
Mar 1, 2026AGrant or award
Restricted Stock Unitsderivative10b5-1
+3,590$0.00$012,476Mar 3, 2026
Mar 1, 2026AGrant or award
Stock Appreciation Rightsderivative10b5-1
+5,498$0.00$05,498Mar 3, 2026

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%
46Moderate
MTRNsell 5
MATERION Corp
Gregory R. Chemnitz
VP General Counsel & Secretary
$711k
4,517 shares
-43%
32Weak
MTRNsell 5
MATERION Corp
Melissa A Fashinpaur
Chief Accounting Officer
$49k
309 shares
-50%

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.

Shelly Marie Chadwick sold $406k of MTRN | InsiderTell