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sellNotable cluster of 5

Shelly Marie Chadwick sold $1.3M of MTRN

Vice President, Finance & CFO at MATERION Corp. 8,976 shares at an average of $146.13, traded Feb 23, 2026, filed Feb 25, 2026.

Warning score
72
Value
$1.3M
8,976 shares
Holdings after
16,139
-36% from before
From 52-week low
+104%
low $71.69, close $146.01
From 52-week high
-8%
high $159.34, as of Feb 23, 2026

Score components

  • Role
    CFO
    +22
  • Trade size
    $1.3M at market
    +25
  • Share of holdings sold
    Sold 36% of holdings
    +10
  • Cluster
    5 insiders selling within 14 days
    +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 -12.5%, 3m +37.5%, 6m +46.3%.

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 Feb 25, 2026: +67.5%SPY +13.1% · excess +54.3%

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 0001688289-26-000008, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
Feb 23, 2026SOpen-market sale
Common Stock
-3,975$145.03$576k21,140Feb 25, 2026
Feb 23, 2026SOpen-market sale
Common Stock
-5,001$147.00$735k16,139Feb 25, 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%
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.

Shelly Marie Chadwick sold $1.3M of MTRN | InsiderTell