Alphatec Holdings's top three insider shareholders as of September 29, 2026 are Healthcare Partners, Llc L-5 (TenPercentOwner, 11.08Mn shares), Capital Holdings Llc Squadron (TenPercentOwner, 10.65Mn shares), Jennifer N. Pritzker (TenPercentOwner, 10.65Mn shares).
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | Healthcare Partners, Llc L-5 | TenPercentOwner, Other | 11,081,538 | 0 | 11,081,538 | 18.9% | 12 May, 2023 |
| 2 | Capital Llc Squadron | TenPercentOwner | 10,645,045 | 0 | 10,645,045 | 18.2% | 09 Dec, 2025 |
| 3 | Capital Holdings Llc Squadron | TenPercentOwner | 0 | 10,645,045 | 10,645,045 | 18.2% | 10 Dec, 2025 |
| 4 | Jennifer N. Pritzker | TenPercentOwner | 0 | 10,645,045 | 10,645,045 | 18.2% | 10 Dec, 2025 |
| 5 | Patrick Miles | Ceo | 5,893,551 | 0 | 5,893,551 | 10.1% | 10 Sep, 2026 |
| 6 | Craig E Hunsaker | Evp, People Culture | 1,725,609 | 0 | 1,725,609 | 3.0% | 10 Mar, 2026 |
| 7 | Scott Lish | Chief Operating Officer | 815,704 | 0 | 815,704 | 1.4% | 17 Mar, 2026 |
| 8 | James L L Tullis | Director | 171,962 | 563,831 | 735,793 | 1.3% | 12 Sep, 2023 |
| 9 | Brian Snider | Evp, Marketing | 655,382 | 0 | 655,382 | 1.1% | 08 Aug, 2022 |
| 10 | Tyson Eliot Marshall | General Counsel Corp. Sec. | 630,398 | 0 | 630,398 | 1.1% | 07 Aug, 2026 |
| 11 | Mortimer Iii Berkowitz | Chairman | 618,050 | 0 | 618,050 | 1.1% | 11 Sep, 2025 |
| 12 | John Todd Koning | Chief Financial Officer | 600,721 | 0 | 600,721 | 1.0% | 17 Mar, 2026 |
| 13 | Quentin S. Blackford | Director | 600,381 | 0 | 600,381 | 1.0% | 12 Jun, 2026 |
| 14 | Kelli Mari Howell | Evp, Clinical Strategies | 540,098 | 0 | 540,098 | 0.9% | 09 Aug, 2022 |
| 15 | David Sponsel | Evp, Sales | 504,932 | 0 | 504,932 | 0.9% | 12 Mar, 2026 |
| 16 | David M Demski | Director | 431,635 | 0 | 431,635 | 0.7% | 12 Jun, 2026 |
| 17 | Jeffrey P Rydin | Director | 385,441 | 0 | 385,441 | 0.7% | 05 Nov, 2025 |
| 18 | David R Pelizzon | Director | 378,839 | 0 | 378,839 | 0.6% | 12 Jun, 2026 |
| 19 | Keith Valentine | Director | 264,283 | 0 | 264,283 | 0.5% | 12 Jun, 2026 |
| 20 | Ward W Jr Woods | Director | 154,291 | 0 | 154,291 | 0.3% | 13 Jun, 2025 |
| 21 | Paul Segal | Director | 100,000 | 0 | 100,000 | 0.2% | 14 Jun, 2023 |
| 22 | Karen K Mcginnis | Director | 94,671 | 0 | 94,671 | 0.2% | 12 Jun, 2026 |
| 23 | David H Mowry | Director | 92,381 | 0 | 92,381 | 0.2% | 12 Sep, 2023 |
| 24 | Jason Hochberg | Director | 84,375 | 0 | 84,375 | 0.1% | 16 Dec, 2021 |
| 25 | Marie Meynadier | Director | 59,126 | 0 | 59,126 | 0.1% | 21 Jun, 2023 |
| 26 | Evan Bakst | Director | 0 | 50,000 | 50,000 | 0.1% | 26 Aug, 2024 |
| 27 | Elizabeth Ann Altman | Director | 41,066 | 0 | 41,066 | 0.1% | 21 Jun, 2023 |
| 28 | Andy Barnett | Director | 18,546 | 0 | 18,546 | 0.0% | 16 Jun, 2022 |
Each row is that insider’s most recently reported position, from Form 4 filings over the last 60 months — which is why this total does not tie to the quarterly series above, where a quarter counts only the insiders who filed in it. Shares held through a fund or institutional portfolio are counted on the institutional ownership page instead.
| Date | Insider | Position | Transaction | Shares | Price | Value | Shares Held After | Ownership |
|---|---|---|---|---|---|---|---|---|
| 10 Sep, 2026 | Patrick Miles | Ceo | Acquired P | 115,000 | $8.81 | $1.01Mn | 5,893,551 | Direct |
| 05 Aug, 2026 | Tyson Eliot Marshall | General Counsel Corp. Sec. | Disposed S | 8,168 | $9.65 | $78.82K | 630,398 | Direct |
| 10 Jun, 2026 | Quentin S. Blackford | Director | Acquired A | 32,012 | $0.00 | $0 | 600,381 | Direct |
| 10 Jun, 2026 | David M Demski | Director | Acquired A | 32,012 | $0.00 | $0 | 431,635 | Direct |
| 10 Jun, 2026 | Karen K Mcginnis | Director | Acquired A | 32,012 | $0.00 | $0 | 100,721 | Direct |
| 10 Jun, 2026 | David R Pelizzon | Director | Acquired A | 32,012 | $0.00 | $0 | 378,839 | Direct |
| 10 Jun, 2026 | Keith Valentine | Director | Acquired A | 32,012 | $0.00 | $0 | 264,283 | Direct |
| 11 Jun, 2026 | Karen K Mcginnis | Director | Disposed S | 6,050 | $8.01 | $48.46K | 94,671 | Direct |
| 07 May, 2026 | Keith Valentine | Director | Acquired P | 56,153 | $7.49 | $420.59K | 153,424 | Direct |
| 08 May, 2026 | Keith Valentine | Director | Acquired P | 43,847 | $7.54 | $330.61K | 197,271 | Direct |
| 11 May, 2026 | Keith Valentine | Director | Acquired P | 35,000 | $7.00 | $245.00K | 232,271 | Direct |
| 07 Apr, 2026 | Tyson Eliot Marshall | General Counsel Corp. Sec. | Acquired M | 15,000 | $1.98 | $29.70K | 574,459 | Direct |
| 07 Apr, 2026 | Tyson Eliot Marshall | General Counsel Corp. Sec. | Acquired M | 15,000 | $1.68 | $25.20K | 589,459 | Direct |
| 07 Apr, 2026 | Tyson Eliot Marshall | General Counsel Corp. Sec. | Acquired M | 12,500 | $3.34 | $41.75K | 601,959 | Direct |
| 07 Apr, 2026 | Tyson Eliot Marshall | General Counsel Corp. Sec. | Acquired M | 60,000 | $2.69 | $161.40K | 661,959 | Direct |
| 07 Apr, 2026 | Tyson Eliot Marshall | General Counsel Corp. Sec. | Disposed F | 23,393 | $11.03 | $258.02K | 638,566 | Direct |
| 07 Apr, 2026 | Tyson Eliot Marshall | General Counsel Corp. Sec. | Disposed M | 15,000 | $0.00 | $0 | 0 | Direct |
| 07 Apr, 2026 | Tyson Eliot Marshall | General Counsel Corp. Sec. | Disposed M | 15,000 | $0.00 | $0 | 0 | Direct |
| 07 Apr, 2026 | Tyson Eliot Marshall | General Counsel Corp. Sec. | Disposed M | 12,500 | $0.00 | $0 | 0 | Direct |
| 07 Apr, 2026 | Tyson Eliot Marshall | General Counsel Corp. Sec. | Disposed M | 60,000 | $0.00 | $0 | 0 | Direct |