Updated Jul 16, 2026
Marshall Tyson Eliot is a corporate insider tracked by InsiderAlpha. No SEC Form 4 filings recorded in the last 90 days. Lifetime open-market sales: $1.55M.
Tyson Eliot Marshall serves as General Counsel and Corporate Secretary at Alphatec Holdings, Inc., a medical technology company specializing in spinal disorder treatments. He has filed three SEC documents related to his role at the company.
| Role | Insider |
|---|---|
| Notability | 20/100 |
| Date | Ticker | Company | Code | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 2026-04-09 | ATEC | Alphatec Holdings, Inc. | F — Tax withholding / forfeiture | 23.4K | $11.03 | $258K |
| 2026-04-09 | ATEC | Alphatec Holdings, Inc. | M — Option exercise | 60.0K | $2.69 | $161K |
| 2026-04-09 | ATEC | Alphatec Holdings, Inc. | M — Option exercise | 12.5K | $3.34 | $42K |
| 2026-04-09 | ATEC | Alphatec Holdings, Inc. | M — Option exercise | 15.0K | $1.68 | $25K |
| 2026-04-09 | ATEC | Alphatec Holdings, Inc. | M — Option exercise | 15.0K | $1.98 | $30K |
| 2026-03-09 | ATEC | Alphatec Holdings, Inc. | S — Open-market sale [10b5-1] | 88.8K | $12.49 | $1.11M |
| 2026-02-28 | ATEC | Alphatec Holdings, Inc. | A — Grant or award | 12.8K | — | |
| 2026-02-28 | ATEC | Alphatec Holdings, Inc. | A — Grant or award | 84.9K | $0.00 | |
| 2026-02-28 | ATEC | Alphatec Holdings, Inc. | A — Grant or award | 205.1K | $0.00 | |
| 2025-08-01 | ATEC | Alphatec Holdings, Inc. | S — Open-market sale | 8.2K | $14.96 | $122K |
| 2025-08-01 | ATEC | Alphatec Holdings, Inc. | S — Open-market sale | 9.9K | $14.86 | $147K |
| 2025-08-01 | ATEC | Alphatec Holdings, Inc. | S — Open-market sale | 12.9K | $12.00 | $155K |
| 2025-07-10 | ATEC | Alphatec Holdings, Inc. | S — Open-market sale | 1.5K | $12.00 | $18K |
Tyson Eliot Marshall serves as General Counsel and Corporate Secretary at Alphatec Holdings, Inc., a medical technology company specializing in spinal disorder treatments. He has filed three SEC documents related to his role at the company.…
Recorded transactions: 0 open-market purchases () and 5 open-market sales ($1.55M) across all tracked filings.
All Form 4 filings, transaction values, and 10b5-1 plan flags are listed on this page and updated in real time as new SEC EDGAR filings are processed.
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