Sponsel David (CIK 1772837) reported 19 SEC Form 4 insider transactions across 1 companies over the past 18 months (most recent 2026-03-13). Recent activity: Sell ATEC (163,452 shares), Buy ATEC (93,410 shares), Buy ATEC (20,380 shares), Buy ATEC (205,094 shares), Sell ATEC (60,425 shares). Source: SEC Form 4.
| Date | Company | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-03-13 | Alphatec Holdings, Inc. (ATEC) | EVP, SALES | Sell | 163,452 | $2.0M |
| 2026-02-27 | Alphatec Holdings, Inc. (ATEC) | EVP, SALES | Buy | 93,410 | $0 |
| 2026-02-27 | Alphatec Holdings, Inc. (ATEC) | EVP, SALES | Buy | 20,380 | $0 |
| 2026-02-27 | Alphatec Holdings, Inc. (ATEC) | EVP, SALES | Buy | 205,094 | $0 |
| 2026-02-06 | Alphatec Holdings, Inc. (ATEC) | EVP, SALES | Sell | 60,425 | $833,261 |
| 2025-12-12 | Alphatec Holdings, Inc. (ATEC) | EVP, SALES | Sell | 21,106 | $438,794 |
| 2025-12-10 | Alphatec Holdings, Inc. (ATEC) | EVP, SALES | Sell | 988 | $21,193 |
| 2025-10-28 | Alphatec Holdings, Inc. (ATEC) | EVP, SALES | Sell | 70,000 | $1.1M |
| 2025-09-19 | Alphatec Holdings, Inc. (ATEC) | EVP, SALES | Sell | 137,445 | $2.1M |
| 2025-09-19 | Alphatec Holdings, Inc. (ATEC) | EVP, SALES | Sell | 2,555 | $39,194 |
| 2025-08-07 | Alphatec Holdings, Inc. (ATEC) | EVP, SALES | Sell | 982 | $15,064 |
| 2025-04-03 | Alphatec Holdings, Inc. (ATEC) | EVP, SALES | Buy | 3,866 | $0 |
| 2025-03-10 | Alphatec Holdings, Inc. (ATEC) | EVP, SALES | Sell | 33,732 | $365,318 |
| 2025-02-26 | Alphatec Holdings, Inc. (ATEC) | EVP, SALES | Sell | 12,946 | $138,911 |
| 2025-02-26 | Alphatec Holdings, Inc. (ATEC) | EVP, SALES | Sell | 19,419 | $202,152 |
| 2025-02-04 | Alphatec Holdings, Inc. (ATEC) | EVP, SALES | Sell | 36,256 | $414,044 |
| 2025-01-31 | Alphatec Holdings, Inc. (ATEC) | EVP, SALES | Buy | 21,106 | $0 |
| 2025-01-31 | Alphatec Holdings, Inc. (ATEC) | EVP, SALES | Buy | 133,591 | $0 |
| 2025-01-31 | Alphatec Holdings, Inc. (ATEC) | EVP, SALES | Buy | 114,322 | $0 |
Source: SEC Form 4 filings · as of 2026-03-13