Jeffrey G. Black is CFO & VP at Alphatec Holdings, Inc. (ATEC). They have made 14 open-market trades across 5 companies since 2010, most recently 2026-09-01.
CIK 0001449439
8 open-market purchases totalling $1.0M since 2010, against 6 sales. Across 6 scored buys the stock is up 28.3% at ninety days, and 24.9 points ahead of the S&P over the same stretch.
6 scored purchases · one row per filing · discretionary only
| Ticker | Shares | Value |
|---|---|---|
| ATEC | 620,770 | $6.5M |
| APEN | 332,650 | $3.3M |
| XGN | 324,910 | $2.5M |
| LAB | 421,608 | $268K |
| VRNM | 200 | — |
| Total | $12.6M |
Shares reported on the most recent Form 4, priced at the 2026-09-02 close. 1 holding could not be priced and is excluded from the total.
| 7d | 30d | 90d | |
|---|---|---|---|
| Accuracy | 67% | 67% | 67% |
| Avg Move | +1.4% | +9.5% | +28.3% |
| Alpha | +0.9% | +7.4% | +24.9% |
| Scored | 6 | 6 | 6 |
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| XGN | SELL | 2026-09-01 | 2026-09-02 | $7.22 | $149K | -2.0% | +6.7% | — |
| XGN | SELL | 2026-02-24 | 2026-02-25 | $3.61 | $6K | -10.6% | -29.1% | +22.0% |
| XGN | SELL | 2025-09-02 | 2025-09-04 | $9.79 | $401K | -7.3% | +10.9% | -25.9% |
| XGN | BUY | 2024-11-15 | 2024-11-19 | $2.98 | $133K | +10.6% | +24.3% | -0.7% |
| LAB | BUY | 2023-05-18 | 2023-05-22 | $2.25 | $388K | -5.2% | -20.8% | +7.6% |
| APEN | BUY | 2022-02-25 | 2022-03-01 | $5.73 | $229K | +0.2% | -3.5% | -30.6% |
| APEN | BUY | 2021-08-11 | 2021-08-11 | $8.75 | $219K | -14.6% | +9.7% | +3.3% |
| ATEC | SELL | 2021-03-09 | 2021-03-10 | $16.69 | $234K | +12.3% | +5.3% | -15.2% |
| ATEC | SELL | 2021-02-16 | 2021-02-18 | $16.28 | $407K | +1.6% | +13.5% | -9.7% |
| ATEC | SELL | 2020-08-11 | 2020-08-13 | $6.42 | $32K | -4.9% | +5.5% | +61.8% |
| ATEC | SELL · 10b5-1 | 2020-08-04 | 2020-08-06 | $5.03 | $45K | -4.8% | -5.6% | +53.6% |
| ATEC | SELL · 10b5-1 | 2020-03-10 | 2020-03-12 | $5.08 | $33K | -29.2% | +2.3% | +34.4% |
| ATEC | SELL · 10b5-1 | 2019-08-02 | 2019-08-02 | $4.75 | $42K | +18.6% | +0.6% | +37.9% |
| ATEC | BUY | 2017-08-17 | 2017-08-17 | $1.80 | $9K | +7.0% | +19.3% | +90.3% |
| ATEC | BUY | 2017-08-16 | 2017-08-16 | $1.75 | $7K | +10.2% | +28.1% | +99.6% |
| VRNM | BUY | 2011-08-15 | 2011-08-16 | $2.00 | $4K | N/A | N/A | N/A |
| VRNM | BUY | 2010-08-16 | 2010-08-18 | $2.78 | $12K | N/A | N/A | N/A |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.
Counted per filing, not per execution lot — a purchase filled in several tranches is one decision.