John Todd Koning is CFO at Alphatec Holdings, Inc. (ATEC). They have made 3 open-market trades across 1 company since 2021, most recently 2026-03-13.
CIK 0001830843
Unrated. We grade insiders only on stock they chose to buy on the open market. Grants, option exercises and vesting say nothing about timing, so they don't count — which is why someone can file often and still have no grade. It isn't a bad sign: unrated buys beat every graded tier below A.
1 open-market purchase totalling $56K since 2021, against 2 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| ATEC | 600,721 | $6.3M |
Shares reported on the most recent Form 4, priced at the 2026-03-17 close.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| ATEC | SELL · 10b5-1 | 2026-03-13 | 2026-03-17 | $12.36 | $986K | -15.9% | -16.8% | -36.2% |
| ATEC | SELL · 10b5-1 | 2025-04-22 | 2025-04-23 | $10.71 | $803K | +6.9% | +11.1% | -4.2% |
| ATEC | SELL · 10b5-1 | 2025-03-10 | 2025-03-12 | $9.72 | $3.2M | +10.0% | +2.2% | +28.0% |
| ATEC | SELL · 10b5-1 | 2024-04-24 | 2024-04-26 | $12.82 | $481K | -15.2% | -17.8% | -13.0% |
| ATEC | SELL · 10b5-1 | 2024-03-01 | 2024-03-04 | $13.30 | $3.2M | -0.4% | +0.7% | -29.1% |
| ATEC | SELL · 10b5-1 | 2023-04-20 | 2023-04-24 | $16.42 | $271K | -5.0% | -2.7% | +12.7% |
| ATEC | SELL | 2023-02-27 | 2023-03-01 | $14.76 | $332K | +1.0% | +4.6% | -0.5% |
| ATEC | SELL | 2023-02-22 | 2023-02-23 | $14.20 | $371K | +11.2% | +11.0% | +4.7% |
| ATEC | BUY | 2021-12-16 | 2021-12-20 | $11.17 | $56K | -0.3% | -1.8% | -5.8% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.