John Todd Koning sold $986k of ATEC
CHIEF FINANCIAL OFFICER at Alphatec Holdings, Inc.. 79,789 shares at an average of $12.36, traded Mar 13, 2026, filed Mar 17, 2026.
Score components
- +22RoleCFO
- +25Trade size$986k at market
- +5Share of holdings soldSold 12% of holdings
- +15Cluster5 insiders selling within 14 days
- -2010b5-1 planPre-scheduled under a 10b5-1 plan
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 -17.1%, 3m -35.3%, 6m -18.3%.
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.
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 0001830843-26-000006, as filed. Open on EDGAR
| Date | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|
| Mar 13, 2026 | SOpen-market sale Common Stock10b5-1 | -79,789 | $12.36 | $986k | 600,721 | Mar 17, 2026 |
Related signals
Other insiders at Alphatec Holdings, Inc. and this insider’s other filings.
| Score | Company | Insider | Value | Holdings | Filed |
|---|---|---|---|---|---|
| 58Moderate | ATECbuy Alphatec Holdings, Inc. | Patrick Miles CEO | $1.0M 115,000 shares | +2% | |
| 4Weak | Alphatec Holdings, Inc. | Tyson Eliot Marshall GENERAL COUNSEL & CORP. SEC. | $79k 8,168 shares | -1% | |
| 12Weak | 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% | |
| 65Notable | Alphatec Holdings, Inc. | Scott Lish CHIEF OPERATING OFFICER | $3.2M 260,535 shares | -24% | |
| 40Moderate | Alphatec Holdings, Inc. | David Sponsel EVP, SALES | $2.0M 163,452 shares | -24% | |
| 35Weak | Alphatec Holdings, Inc. | Craig E Hunsaker EVP, PEOPLE & CULTURE | $1.4M 116,367 shares | -6% | |
| 40Moderate | Alphatec Holdings, Inc. | Tyson Eliot Marshall GENERAL COUNSEL & CORP. SEC. | $1.1M 88,835 shares | -14% | |
| 31Weak | Alphatec Holdings, Inc. | David Sponsel EVP, SALES | $833k 60,425 shares | -15% | |
| 22Weak | Alphatec Holdings, Inc. | Craig E Hunsaker EVP, PEOPLE & CULTURE | $550k 37,358 shares | -3% |
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.