Sponsel David
CIK 0001772837 Name as filed on the most recent filing
Filed as Sponsel David (28)
31 transaction lines · from 28 filings · filed 2020-03-12 to 2026-03-13 The span is the filing dates this catalog holds, not the entity's full filing history. Absence here is not evidence of absence at the SEC.
A line appears here when the filing that carries it names this CIK as a reporting owner, not only when the parser picked this CIK as the line's primary owner. That is why a joint filing appears on both owners' pages rather than vanishing from the second one. The catalog never merges two CIKs into one person and never splits one CIK into two: identity here is the SEC's own identifier and nothing else.
Issuers this insider has filed against
Ordered by last-seen filing date, newest first. Roles are as filed on the Form 4 and are not normalised.
This container could not be filled from the store. It is showing nothing because a read failed, not because no insider filed: those are different facts and this catalog will not let one stand in for the other. The last ingest the store recorded was 2026-08-20 05:22 UTC.
No issuer is recorded
The catalog holds no filing linking this CIK to an issuer.
Transactions
Every stored Form 4 line naming this reporting owner, newest transaction date first. Each row links to the filing it came from.
31 transactions · Newest transaction date first, id breaking the tie.
This container could not be filled from the store. It is showing nothing because a read failed, not because no insider filed: those are different facts and this catalog will not let one stand in for the other. The last ingest the store recorded was 2026-08-20 05:22 UTC.
| Direction | Date | Issuer | Code | Shares | Price | Value USD | Filing |
|---|---|---|---|---|---|---|---|
| 2026-03-11 |
Alphatec Holdings, Inc. ATEC |
S, Open-market sale | 163,452 disposed | 12.52 | 2,046,419.04 | Form 4, filing 0001772837-26-000007 | |
| 2026-02-05 |
Alphatec Holdings, Inc. ATEC |
S, Open-market sale | 60,425 disposed | 13.79 | 833,260.75 | Form 4, filing 0001772837-26-000003 | |
| 2025-12-10 |
Alphatec Holdings, Inc. ATEC |
S, Open-market sale | 21,106 disposed | 20.79 | 438,793.74 | Form 4, filing 0001772837-25-000010 | |
| 2025-12-08 |
Alphatec Holdings, Inc. ATEC |
S, Open-market sale | 988 disposed | 21.45 | 21,192.60 | Form 4, filing 0001772837-25-000007 | |
| 2025-10-24 |
Alphatec Holdings, Inc. ATEC |
S, Open-market sale | 70,000 disposed | 16.18 | 1,132,600.00 | Form 4, filing 0001772837-25-000005 | |
| 2025-09-19 |
Alphatec Holdings, Inc. ATEC |
S, Open-market sale | 2,555 disposed | 15.34 | 39,193.70 | Form 4, filing 0001772837-25-000003 | |
| 2025-09-18 |
Alphatec Holdings, Inc. ATEC |
S, Open-market sale | 137,445 disposed | 15.09 | 2,074,045.05 | Form 4, filing 0001772837-25-000003 | |
| 2025-03-06 |
Alphatec Holdings, Inc. ATEC |
S, Open-market sale | 33,732 disposed | 10.83 | 365,317.56 | Form 4, filing 0001415889-25-007493 | |
| 2025-02-25 |
Alphatec Holdings, Inc. ATEC |
S, Open-market sale | 19,419 disposed | 10.41 | 202,151.79 | Form 4, filing 0001415889-25-005799 | |
| 2025-02-24 |
Alphatec Holdings, Inc. ATEC |
S, Open-market sale | 12,946 disposed | 10.73 | 138,910.58 | Form 4, filing 0001415889-25-005799 | |
| 2025-02-03 |
Alphatec Holdings, Inc. ATEC |
S, Open-market sale | 36,256 disposed | 11.42 | 414,043.52 | Form 4, filing 0001415889-25-003036 | |
| 2025-01-13 |
Alphatec Holdings, Inc. ATEC |
S, Open-market sale | 58,283 disposed | 10.71 | 624,210.93 | Form 4, filing 0001415889-25-001441 | |
| 2025-01-10 |
Alphatec Holdings, Inc. ATEC |
S, Open-market sale | 238 disposed | 10.00 | 2,380.00 | Form 4, filing 0001415889-25-001441 | |
| 2024-12-11 |
Alphatec Holdings, Inc. ATEC |
S, Open-market sale | 62,018 disposed | 9.69 | 600,954.42 | Form 4, filing 0001415889-24-029319 | |
| 2024-02-27 |
Alphatec Holdings, Inc. ATEC |
S, Open-market sale | 32,365 disposed | 15.19 | 491,624.35 | Form 4, filing 0001415889-24-005992 | |
| 2024-02-21 |
Alphatec Holdings, Inc. ATEC |
S, Open-market sale | 17,820 disposed | 15.34 | 273,358.80 | Form 4, filing 0001415889-24-004923 | |
| 2024-02-14 |
Alphatec Holdings, Inc. ATEC |
S, Open-market sale | 2,500 disposed | 16.16 | 40,400.00 | Form 4, filing 0001415889-24-003973 | |
| 2024-02-02 |
Alphatec Holdings, Inc. ATEC |
S, Open-market sale | 36,620 disposed | 16.47 | 603,131.40 | Form 4, filing 0001415889-24-002693 | |
| 2024-01-16 |
Alphatec Holdings, Inc. ATEC |
S, Open-market sale | 2,500 disposed | 15.00 | 37,500.00 | Form 4, filing 0001415889-24-001297 | |
| 2023-12-21 |
Alphatec Holdings, Inc. ATEC |
S, Open-market sale | 2,500 disposed | 15.00 | 37,500.00 | Form 4, filing 0001415889-23-016946 | |
| 2023-06-15 |
Alphatec Holdings, Inc. ATEC |
S, Open-market sale | 55,577 disposed | 16.17 | 898,680.09 | Form 4, filing 0001415889-23-009981 | |
| 2023-03-06 |
Alphatec Holdings, Inc. ATEC |
S, Open-market sale | 16,823 disposed | 15.82 | 266,139.86 | Form 4, filing 0001415889-23-004539 | |
| 2023-01-09 |
Alphatec Holdings, Inc. ATEC |
S, Open-market sale | 10,000 disposed | 11.99 | 119,900.00 | Form 4, filing 0001415889-23-000716 | |
| 2022-12-05 |
Alphatec Holdings, Inc. ATEC |
S, Open-market sale | 10,000 disposed | 9.88 | 98,800.00 | Form 4, filing 0001415889-22-012080 | |
| 2022-11-07 |
Alphatec Holdings, Inc. ATEC |
S, Open-market sale | 10,000 disposed | 9.25 | 92,500.00 | Form 4, filing 0001415889-22-011220 | |
| 2021-11-12 |
Alphatec Holdings, Inc. ATEC |
S, Open-market sale | 9,847 disposed | 11.56 | 113,831.32 | Form 4, filing 0001179110-21-010141 | |
| 2021-06-16 |
Alphatec Holdings, Inc. ATEC |
S, Open-market sale | 10,000 disposed | 14.78 | 147,800.00 | Form 4, filing 0001179110-21-006875 | |
| 2021-05-03 |
Alphatec Holdings, Inc. ATEC |
S, Open-market sale | 30,000 disposed | 15.97 | 479,100.00 | Form 4, filing 0001179110-21-004879 | |
| 2021-04-26 |
Alphatec Holdings, Inc. ATEC |
S, Open-market sale | 14,572 disposed | 16.63 | 242,332.36 | Form 4, filing 0001179110-21-004643 | |
| 2020-10-12 |
Alphatec Holdings, Inc. ATEC |
S, Open-market sale | 89,999 disposed | 9.47 | 852,290.53 | Form 4, filing 0001179110-20-010442 | |
| 2020-03-11 |
Alphatec Holdings, Inc. ATEC |
P, Open-market purchase | 11,000 acquired | 4.51 | 49,610.00 | Form 4, filing 0001179110-20-003584 |
This column is intentionally blank
No transaction line is stored for this reporting owner, though the catalog holds filings naming them. That happens when the filings report only holdings or only positions the store does not carry, and when a parse failed; each filing page states its own parse status.
- S, Open-market sale
- Open-market sale
- P, Open-market purchase
- Open-market purchase
Every value is as reported on the Form 4. A price the filing did not report is marked Not reported and no value is computed from it. Codes outside the open market, drawn in grey behind a dashed rule, are compensation and administrative machinery rather than a decision to trade at the prevailing price.
What this insider's stored lines contain
Exact counts over every stored line for this entity. This is a statement of composition, not a filter: the only filter this page offers is the open-market one above, because that is the only one an index serves today.
- Open-market purchase 1
- Open-market sale 30
- Option exercise 0
- Grant or award 0
- Tax withholding 0
- Disposition to the issuer 0
- In-the-money option exercise 0
How to cite this page
ebomi catalog. Sponsel David, insider transactions. Retrieved 2026-08-20 from https://ebomi.com/insider/0001772837
Balogh, A. Insider trading. Scientific Data 10, 237 (2023) doi:10.1038/s41597-023-02147-6