Demski David M — SEC Form 4 filings
SEC reporting owner CIK 1555392. 10 Form 4 filings on record with FilingPulse; latest filed 2026-06-12.
Transaction summary — filings shown
Covers all 10 filings on record, filed 2024-06-14 to 2026-06-12. Counts and totals are arithmetic on values as filed — descriptive data, not a recommendation.
- Open-market purchases (code P, non-derivative): 2 legs across 2 filings — 90,000 shares, $545,900 total (shares × price as filed).
- Open-market sales (code S, non-derivative): 1 leg across 1 filing — 30,000 shares, $636,000 total (shares × price as filed).
- Other reported legs (grants, option exercises, tax withholding, gifts, derivative-security transactions, …): 8.
- Largest priced transaction: sale of 30,000 shares @ $21.20 ($636,000) in Alphatec Holdings, Inc., filed 2025-12-12.
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) | Director | 7 | 2 legs · 90,000 sh · $545,900 | 1 leg · 30,000 sh · $636,000 | 4 |
| Axonics, Inc. (AXNX) | Director | 1 | — | — | 2 |
| Paragon 28, Inc. (FNA) | Director | 2 | — | — | 2 |
Form 4 filings — Demski David M
| Filed | Form | Issuer | Reported transactions | Source |
|---|---|---|---|---|
| 2026-06-12 | 4 | Alphatec Holdings, Inc. (ATEC) | Grant/award (A): 32,012 @ $0 | EDGAR |
| 2025-12-12 | 4 | Alphatec Holdings, Inc. (ATEC) | Sale (S): 30,000 @ $21.20 | EDGAR |
| 2025-06-13 | 4 | Alphatec Holdings, Inc. (ATEC) | Grant/award (A): 15,131 @ $0 | EDGAR |
| 2025-04-21 | 4 | Paragon 28, Inc. (FNA) | Disposition to issuer (D): 74,307 | EDGAR |
| 2024-12-18 | 4 | Alphatec Holdings, Inc. (ATEC) | Grant/award (A): 126,051 | EDGAR |
| 2024-12-12 | 4 | Paragon 28, Inc. (FNA) | Grant/award (A): 34,207 @ $0 | EDGAR |
| 2024-11-15 | 4 | Axonics, Inc. (AXNX) | Disposition to issuer (D): 9,542 @ $71 · Disposition to issuer (D): 10,000 (derivative) @ $19.30 | EDGAR |
| 2024-08-21 | 4 | Alphatec Holdings, Inc. (ATEC) | Purchase (P): 50,000 @ $5.67 | EDGAR |
| 2024-08-05 | 4 | Alphatec Holdings, Inc. (ATEC) | Purchase (P): 40,000 @ $6.56 | EDGAR |
| 2024-06-14 | 4 | Alphatec Holdings, Inc. (ATEC) | Grant/award (A): 16,747 @ $0 | 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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