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sellNotable cluster of 5

Scott Lish sold $3.2M of ATEC

CHIEF OPERATING OFFICER at Alphatec Holdings, Inc.. 260,535 shares at an average of $12.30, traded Mar 13, 2026, filed Mar 17, 2026.

Warning score
65
Value
$3.2M
260,535 shares
Holdings after
815,704
-24% from before
From 52-week low
+32%
low $9.27, close $12.28
From 52-week high
-46%
high $22.68, as of Mar 13, 2026

Score components

  • Role
    COO
    +20
  • Trade size
    $3.2M at market
    +25
  • Share of holdings sold
    Sold 24% of holdings
    +5
  • 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.

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.

ATECOct 9, 2026 · close 10.67
Since filing Mar 17, 2026: -18.2%SPY +17.0% · excess -35.2%

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 0001831608-26-000004, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
Mar 13, 2026SOpen-market sale
Common Stock
-260,535$12.30$3.2M815,704Mar 17, 2026

Related signals

Other insiders at Alphatec Holdings, Inc. and this insider’s other filings.

ScoreCompanyInsiderValueHoldingsFiled
58Moderate
ATECbuy
Alphatec Holdings, Inc.
Patrick Miles
CEO
$1.0M
115,000 shares
+2%
12Weak
ATECsell10b5-1
Alphatec Holdings, Inc.
Karen K McGinnis
director
$48k
6,050 shares
-6%
58Moderate
ATECbuy
Alphatec Holdings, Inc.
Keith Valentine
director
$996k
135,000 shares
+139%
47Moderate
ATECsell 510b5-1
Alphatec Holdings, Inc.
John Todd Koning
CHIEF FINANCIAL OFFICER
$986k
79,789 shares
-12%
40Moderate
ATECsell 510b5-1
Alphatec Holdings, Inc.
David Sponsel
EVP, SALES
$2.0M
163,452 shares
-24%
35Weak
ATECsell 510b5-1
Alphatec Holdings, Inc.
Craig E Hunsaker
EVP, PEOPLE & CULTURE
$1.4M
116,367 shares
-6%
40Moderate
ATECsell 510b5-1
Alphatec Holdings, Inc.
Tyson Eliot Marshall
GENERAL COUNSEL & CORP. SEC.
$1.1M
88,835 shares
-14%
31Weak
ATECsell 210b5-1
Alphatec Holdings, Inc.
David Sponsel
EVP, SALES
$833k
60,425 shares
-15%
22Weak
ATECsell 210b5-1
Alphatec Holdings, Inc.
Craig E Hunsaker
EVP, PEOPLE & CULTURE
$550k
37,358 shares
-3%
30Weak
ATECsell10b5-1
Alphatec Holdings, Inc.
Patrick Miles
CEO
$2.1M
100,000 shares
-2%

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.

Scott Lish sold $3.2M of ATEC | InsiderTell