Sponsel David — SEC Form 4 filings
SEC reporting owner CIK 1772837. 20 Form 4 filings on record with FilingPulse; latest filed 2026-03-13.
Transaction summary — filings shown
Covers all 20 filings on record, filed 2024-01-17 to 2026-03-13. Counts and totals are arithmetic on values as filed — descriptive data, not a recommendation.
- Open-market purchases (code P, non-derivative): none reported.
- Open-market sales (code S, non-derivative): 19 legs across 16 filings — 770,668 shares, $10,379,488 total (shares × price as filed).
- Other reported legs (grants, option exercises, tax withholding, gifts, derivative-security transactions, …): 12.
- Largest priced transaction: sale of 137,445 shares @ $15.09 ($2,074,045) in Alphatec Holdings, Inc., filed 2025-09-19.
By issuer — same filings
Open-market purchase/sale legs on non-derivative securities, grouped by issuer. Role is as filed on the newest filing for that issuer. Dollar totals cover priced legs only (shares × price as filed). Ordered by priced transaction value, largest first.
| Issuer | Role (as filed) | Filings | Purchases (P) | Sales (S) | Other legs |
|---|---|---|---|---|---|
| Alphatec Holdings, Inc. (ATEC) | EVP, SALES | 20 | — | 19 legs · 770,668 sh · $10,379,488 | 12 |
Form 4 filings — Sponsel David
| Filed | Form | Issuer | Reported transactions | Source |
|---|---|---|---|---|
| 2026-03-13 | 4 | Alphatec Holdings, Inc. (ATEC) | Sale (S): 163,452 @ $12.52 | EDGAR |
| 2026-02-27 | 4 | Alphatec Holdings, Inc. (ATEC) | Grant/award (A): 205,094 @ $0 · Grant/award (A): 93,410 @ $0 · Grant/award (A): 20,380 · Grant/award (A): 46,705 (derivative) @ $0 · Grant/award (A): 46,705 (derivative) @ $0 | EDGAR |
| 2026-02-06 | 4 | Alphatec Holdings, Inc. (ATEC) | Sale (S): 60,425 @ $13.79 | EDGAR |
| 2025-12-12 | 4 | Alphatec Holdings, Inc. (ATEC) | Sale (S): 21,106 @ $20.79 | EDGAR |
| 2025-12-10 | 4 | Alphatec Holdings, Inc. (ATEC) | Sale (S): 988 @ $21.45 | EDGAR |
| 2025-10-28 | 4 | Alphatec Holdings, Inc. (ATEC) | Sale (S): 70,000 @ $16.18 | EDGAR |
| 2025-09-19 | 4 | Alphatec Holdings, Inc. (ATEC) | Sale (S): 137,445 @ $15.09 · Sale (S): 2,555 @ $15.34 | EDGAR |
| 2025-08-07 | 4 | Alphatec Holdings, Inc. (ATEC) | Tax withholding (F): 982 @ $15.34 | EDGAR |
| 2025-04-03 | 4 | Alphatec Holdings, Inc. (ATEC) | Grant/award (A): 3,866 | EDGAR |
| 2025-03-10 | 4 | Alphatec Holdings, Inc. (ATEC) | Sale (S): 33,732 @ $10.83 | EDGAR |
| 2025-02-26 | 4 | Alphatec Holdings, Inc. (ATEC) | Sale (S): 12,946 @ $10.73 · Sale (S): 19,419 @ $10.41 | EDGAR |
| 2025-02-04 | 4 | Alphatec Holdings, Inc. (ATEC) | Sale (S): 36,256 @ $11.42 | EDGAR |
| 2025-01-31 | 4 | Alphatec Holdings, Inc. (ATEC) | Grant/award (A): 133,591 @ $0 · Grant/award (A): 114,322 @ $0 · Grant/award (A): 21,106 | EDGAR |
| 2025-01-14 | 4 | Alphatec Holdings, Inc. (ATEC) | Sale (S): 238 @ $10 · Sale (S): 58,283 @ $10.71 | EDGAR |
| 2024-12-13 | 4 | Alphatec Holdings, Inc. (ATEC) | Sale (S): 62,018 @ $9.69 | EDGAR |
| 2024-02-29 | 4 | Alphatec Holdings, Inc. (ATEC) | Sale (S): 32,365 @ $15.19 | EDGAR |
| 2024-02-22 | 4 | Alphatec Holdings, Inc. (ATEC) | Grant/award (A): 35,063 @ $0 · Sale (S): 17,820 @ $15.34 | EDGAR |
| 2024-02-15 | 4 | Alphatec Holdings, Inc. (ATEC) | Sale (S): 2,500 @ $16.16 | EDGAR |
| 2024-02-05 | 4 | Alphatec Holdings, Inc. (ATEC) | Grant/award (A): 121,258 @ $0 · Sale (S): 36,620 @ $16.47 | EDGAR |
| 2024-01-17 | 4 | Alphatec Holdings, Inc. (ATEC) | Sale (S): 2,500 @ $15 | EDGAR |
FilingPulse's Form 4 archive currently extends back to 2024-01-11 and is expanding backward through EDGAR history — earlier filings by this insider may not be indexed yet. Names and roles are shown as filed.
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