SEC Form 4 · Updated Daily
ATEC
— ALPHATEC HOLDINGS, INC. OwnershipInsider and institutional ownership derived from SEC Form 4 filings. Click any owner to see their holdings across every company they’ve filed on, and how their position has changed over time.
Current Reporting Owners
| Owner | Role | Shares Owned | As Of | Last Activity |
|---|---|---|---|---|
| Squadron Capital LLC | 10%+ Owner | 10,645,045 | 2025-12-09 | S |
| Squadron Capital Holdings LLC | 10%+ Owner | 10,645,045 | 2025-12-09 | S |
| Pritzker Jennifer N. | 10%+ Owner | 10,645,045 | 2025-12-09 | S |
| Miles Patrick | Director · Officer | 5,893,551 | 2026-09-10 | P |
| Hunsaker Craig E | Officer | 1,725,609 | 2026-03-09 | G |
| Lish Scott | Officer | 815,704 | 2026-03-13 | S |
| Berkowitz Mortimer III | Director | 650,062 | 2026-06-10 | A |
| Marshall Tyson Eliot | Officer | 630,398 | 2026-08-05 | S |
| Koning John Todd | Officer | 600,721 | 2026-03-13 | S |
| Blackford Quentin S. | Director | 600,381 | 2026-06-10 | A |
| Sponsel David | Officer | 504,932 | 2026-03-11 | S |
| Demski David M | Director | 431,635 | 2026-06-10 | A |
| Pelizzon David R | 10%+ Owner · Director | 378,839 | 2026-06-10 | A |
| Valentine Keith | Director | 264,283 | 2026-06-10 | A |
| MCGINNIS KAREN K | Director | 94,671 | 2026-06-11 | S |
Recent Filings
| Date | Owner | Activity | Shares | Price | Owned After |
|---|---|---|---|---|---|
| 2026-09-10 | Miles Patrick | Open-market buy | 115,000 | $8.81 | 5,893,551 |
| 2026-08-05 | Marshall Tyson Eliot | Open-market sale | 8,168 | $9.65 | 630,398 |
| 2026-06-11 | MCGINNIS KAREN K | Open-market sale | 6,050 | $8.01 | 94,671 |
| 2026-06-10 | Berkowitz Mortimer III | Grant / award | 32,012 | $0.00 | 650,062 |
| 2026-06-10 | Demski David M | Grant / award | 32,012 | $0.00 | 431,635 |
| 2026-06-10 | Pelizzon David R | Grant / award | 32,012 | $0.00 | 378,839 |
| 2026-06-10 | Valentine Keith | Grant / award | 32,012 | $0.00 | 264,283 |
| 2026-06-10 | Blackford Quentin S. | Grant / award | 32,012 | $0.00 | 600,381 |
| 2026-06-10 | MCGINNIS KAREN K | Grant / award | 32,012 | $0.00 | 100,721 |
| 2026-05-11 | Valentine Keith | Open-market buy | 35,000 | $7.00 | 232,271 |
| 2026-05-08 | Valentine Keith | Open-market buy | 43,847 | $7.54 | 197,271 |
| 2026-05-07 | Valentine Keith | Open-market buy | 56,153 | $7.49 | 153,424 |
| 2026-04-07 | Marshall Tyson Eliot | Option exercise (derivative) | 15,000 | $0.00 | 0 |
| 2026-04-07 | Marshall Tyson Eliot | Tax withholding | 23,393 | $11.03 | 638,566 |
| 2026-04-07 | Marshall Tyson Eliot | Option exercise | 60,000 | $2.69 | 661,959 |
| 2026-04-07 | Marshall Tyson Eliot | Option exercise | 12,500 | $3.34 | 601,959 |
| 2026-04-07 | Marshall Tyson Eliot | Option exercise | 15,000 | $1.68 | 589,459 |
| 2026-04-07 | Marshall Tyson Eliot | Option exercise | 15,000 | $1.98 | 574,459 |
| 2026-03-13 | Lish Scott | Open-market sale | 260,535 | $12.30 | 815,704 |
| 2026-03-13 | Koning John Todd | Open-market sale | 79,789 | $12.36 | 600,721 |
| 2026-03-11 | Sponsel David | Open-market sale | 163,452 | $12.52 | 504,932 |
| 2026-03-09 | Hunsaker Craig E | Gift | 600 | $0.00 | 1,725,609 |
| 2026-03-09 | Hunsaker Craig E | Open-market sale | 82,765 | $12.45 | 1,726,209 |
| 2026-03-06 | Hunsaker Craig E | Open-market sale | 33,602 | $12.22 | 1,808,974 |
| 2026-03-05 | Marshall Tyson Eliot | Open-market sale | 88,835 | $12.49 | 559,459 |
| 2026-03-05 | Miles Patrick | Tax withholding | 219,749 | $12.57 | 5,778,551 |
| 2026-03-05 | Koning John Todd | Tax withholding | 68,910 | $12.57 | 680,510 |
| 2026-02-25 | Miles Patrick | Grant / award (derivative) | 152,853 | $0.00 | 152,853 |
| 2026-02-25 | Miles Patrick | Grant / award | 48,913 | — | 5,998,300 |
| 2026-02-25 | Miles Patrick | Grant / award | 305,707 | $0.00 | 5,949,387 |
| 2026-02-25 | Miles Patrick | Grant / award | 611,673 | $0.00 | 5,643,680 |
| 2026-02-25 | Hunsaker Craig E | Grant / award (derivative) | 63,689 | $0.00 | 63,689 |
| 2026-02-25 | Hunsaker Craig E | Grant / award | 20,992 | — | 1,842,576 |
| 2026-02-25 | Hunsaker Craig E | Grant / award | 127,378 | $0.00 | 1,821,584 |
| 2026-02-25 | Hunsaker Craig E | Grant / award | 311,110 | $0.00 | 1,694,206 |
| 2026-02-25 | Lish Scott | Grant / award (derivative) | 63,689 | $0.00 | 63,689 |
| 2026-02-25 | Lish Scott | Grant / award | 20,992 | — | 1,076,239 |
| 2026-02-25 | Lish Scott | Grant / award | 127,378 | $0.00 | 1,055,247 |
| 2026-02-25 | Lish Scott | Grant / award | 311,110 | $0.00 | 927,869 |
| 2026-02-25 | Koning John Todd | Grant / award (derivative) | 55,197 | $0.00 | 55,197 |
Source: SEC EDGAR Form 4 filings. For informational purposes only — not investment advice.