Tyson Eliot Marshall is CLO & Secretary at Alphatec Holdings, Inc. (ATEC). They have made 2 open-market trades across 1 company since 2024, most recently 2026-04-07.
CIK 0001666669
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.
0 open-market purchases, against 2 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| ATEC | 638,566 | $6.7M |
Shares reported on the most recent Form 4, priced at the 2026-04-09 close.
Counted per filing, not per execution lot — a purchase filled in several tranches is one decision.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| ATEC | SELL · 10b5-1 | 2026-03-05 | 2026-03-09 | $12.49 | $1.1M | -1.2% | -9.4% | -38.5% |
| ATEC | SELL · 10b5-1 | 2025-12-05 | 2025-12-09 | $21.47 | $983K | -3.4% | +9.5% | -37.9% |
| ATEC | SELL | 2025-11-20 | 2025-11-21 | $19.51 | $1.4M | +4.6% | +1.7% | -33.8% |
| ATEC | SELL · 10b5-1 | 2025-08-01 | 2025-08-05 | $14.14 | $694K | +2.5% | +8.1% | +26.0% |
| ATEC | SELL · 10b5-1 | 2025-07-10 | 2025-07-14 | $12.00 | $18K | -1.8% | +44.8% | +21.4% |
| ATEC | SELL | 2024-06-12 | 2024-06-14 | $10.88 | $1.1M | -1.7% | +8.0% | -48.2% |
| ATEC | SELL · 10b5-1 | 2024-03-06 | 2024-03-08 | $13.16 | $121K | +6.2% | +7.9% | -21.0% |
| ATEC | SELL · 10b5-1 | 2024-03-01 | 2024-03-04 | $13.30 | $315K | -0.4% | +0.7% | -29.1% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.