ATEC insider buying and SEC filings, explained
Alphatec Holdings, Inc. · CIK 1350653
Tracked: Forms 3/4/5, 8-K, NT · All filings on sec.gov
Insider activity in the last 12 months
Bought
$2.0M
Insiders who bought
2
Sold (not marked 10b5-1)
$77.5M
Planned sales (10b5-1)
$14.6M
Insider purchases and sales, last 12 months
| Traded | Type | What was filed | Source |
|---|---|---|---|
| Oct 30, 2026 | Purchase (code P) | David M Demski (Director) bought 60,000 shares at $6.81 ($409K), reported as a purchase (code P). Holdings up 14% to 491,635 shares. | SEC filing Filed Nov 2, 2026, 12:23 PM ET |
| Sep 10, 2026 | Purchase (code P) | Patrick Miles (CEO and Director) bought 115,000 shares at about $8.81 ($1.0M), reported as a purchase (code P). Holdings up 2% to 5,893,551 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Sep 10, 2026 |
| Aug 5, 2026 | Planned (10b5-1) | Tyson Eliot Marshall (General Counsel & Corp. Sec.) sold 8,168 shares at about $9.65 ($79K), marked as a 10b5-1 plan trade. Holdings down 1% to 630,398 shares. | SEC filing Filed Aug 7, 2026 |
| Jun 11, 2026 | Planned (10b5-1) | Karen K. Mcginnis (Director) sold 6,050 shares at $8.01 ($48K), marked as a 10b5-1 plan trade. Holdings down 6% to 94,671 shares. | SEC filing Filed Jun 12, 2026 |
| May 7–11, 2026 | Purchase (code P) | Keith Valentine (Director) bought 135,000 shares between May 7 and May 11 at about $7.38 ($996K), reported as a purchase (code P). Holdings up 139% to 232,271 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed May 11, 2026 |
| Mar 13, 2026 | Sale | Scott Lish (President / COO) sold 260,535 shares at about $12.30 ($3.2M). Holdings down 24% to 815,704 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Mar 17, 2026 |
| Mar 13, 2026 | Planned (10b5-1) | John Todd Koning (CFO) sold 79,789 shares at about $12.36 ($986K), marked as a 10b5-1 plan trade. Holdings down 12% to 600,721 shares. | SEC filing Filed Mar 17, 2026 |
| Mar 11, 2026 | Planned (10b5-1) | David Sponsel (EVP, Sales) sold 163,452 shares at about $12.52 ($2.0M), marked as a 10b5-1 plan trade. Holdings down 24% to 504,932 shares. | SEC filing Filed Mar 13, 2026 |
| Mar 6–9, 2026 | Planned (10b5-1) | Craig E Hunsaker (EVP, People & Culture) sold 116,367 shares between Mar 6 and Mar 9 at about $12.38 ($1.4M), marked as a 10b5-1 plan trade. Holdings down 6% to 1,726,209 shares. | SEC filing Filed Mar 10, 2026 |
| Mar 5, 2026 | Planned (10b5-1) | Tyson Eliot Marshall (General Counsel & Corp. Sec.) sold 88,835 shares at about $12.49 ($1.1M), marked as a 10b5-1 plan trade. Holdings down 14% to 559,459 shares. | SEC filing Filed Mar 9, 2026 |
| Feb 5, 2026 | Planned (10b5-1) | David Sponsel (EVP, Sales) sold 60,425 shares at about $13.79 ($833K), marked as a 10b5-1 plan trade. Holdings down 15% to 349,500 shares. | SEC filing Filed Feb 6, 2026 |
| Feb 3, 2026 | Planned (10b5-1) | Craig E Hunsaker (EVP, People & Culture) sold 37,358 shares at about $14.71 ($550K), marked as a 10b5-1 plan trade. Holdings down 3% to 1,173,025 shares. | SEC filing Filed Feb 4, 2026 |
| Jan 5, 2026 | Planned (10b5-1) | Patrick Miles (CEO and Director) sold 100,000 shares at about $21.01 ($2.1M), marked as a 10b5-1 plan trade. Holdings down 2% to 5,135,398 shares. | SEC filing Filed Jan 6, 2026 |
| Dec 16, 2025 | Planned (10b5-1) | Scott Lish (President / COO) sold 19,900 shares at about $19.64 ($391K), marked as a 10b5-1 plan trade. Holdings down 3% to 641,432 shares. | SEC filing Filed Dec 18, 2025 |
| Dec 16, 2025 | Sale | David R Pelizzon (Director) sold 250,000 shares indirectly (by entity) at about $19.66 ($4.9M). Holdings by entity down 2% to 10,395,045 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Dec 18, 2025 |
| Dec 11, 2025 | Sale | David M Demski (Director) sold 30,000 shares at $21.20 ($636K). Holdings down 7% to 399,623 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Dec 12, 2025 |
| Dec 10, 2025 | Planned (10b5-1) | David Sponsel (EVP, Sales) sold 21,106 shares at about $20.79 ($439K), marked as a 10b5-1 plan trade. Holdings down 5% to 439,767 shares. | SEC filing Filed Dec 12, 2025 |
| Dec 10, 2025 | Sale | Craig E Hunsaker (EVP, People & Culture) sold 32,584 shares at $20.84 ($679K). Holdings down 3% to 1,256,558 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Dec 12, 2025 |
| Dec 8, 2025 | Sale | David Sponsel (EVP, Sales) sold 988 shares at $21.45 ($21K). Holdings down <1% to 460,873 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Dec 10, 2025 |
| Dec 8–9, 2025 | Sale | Squadron Capital LLC (10% owner) sold 250,000 shares between Dec 8, 2025 and Dec 9, 2025 at about $21.18 ($5.3M). Holdings down 2% to 10,645,045 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Dec 10, 2025 |
| Dec 8–9, 2025 | Sale | David R Pelizzon (Director and 10% owner) sold 250,000 shares indirectly (by entity) between Dec 8, 2025 and Dec 9, 2025 at about $21.18 ($5.3M). Holdings by entity down 2% to 10,645,045 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Dec 10, 2025 |
| Dec 8–9, 2025 | Sale | Squadron Capital Holdings LLC (10% owner) sold 250,000 shares indirectly between Dec 8, 2025 and Dec 9, 2025 at about $21.18 ($5.3M). Indirect holdings down 2% to 10,645,045 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Dec 10, 2025 |
| Dec 8–9, 2025 | Sale | Jennifer N. Pritzker (10% owner) sold 250,000 shares indirectly between Dec 8, 2025 and Dec 9, 2025 at about $21.18 ($5.3M). Indirect holdings down 2% to 10,645,045 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Dec 10, 2025 |
| Dec 5, 2025 | Sale | Scott Lish (President / COO) sold 10,875 shares at about $21.47 ($233K). Holdings down 2% to 661,332 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Dec 9, 2025 |
| Dec 5, 2025 | Planned (10b5-1) | Tyson Eliot Marshall (General Counsel & Corp. Sec.) sold 22,889 shares at about $21.47 ($492K), marked as a 10b5-1 plan trade. Holdings down 6% to 345,442 shares. | SEC filing Filed Dec 9, 2025 |
| Dec 1, 2025 | Planned (10b5-1) | Patrick Miles (CEO and Director) sold 100,000 shares at about $22.11 ($2.2M), marked as a 10b5-1 plan trade. Holdings down 2% to 5,264,078 shares. | SEC filing Filed Dec 3, 2025 |
| Nov 24, 2025 | Sale | Jennifer N. Pritzker (10% owner) sold 250,000 shares indirectly at about $20.62 ($5.2M). Indirect holdings down 2% to 10,895,045 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Nov 26, 2025 |
| Nov 24, 2025 | Sale | Squadron Capital Holdings LLC (10% owner) sold 250,000 shares indirectly at about $20.62 ($5.2M). Indirect holdings down 2% to 10,895,045 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Nov 26, 2025 |
| Nov 24, 2025 | Sale | Squadron Capital LLC (10% owner) sold 250,000 shares at about $20.62 ($5.2M). Holdings down 2% to 10,895,045 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Nov 25, 2025 |
| Nov 24, 2025 | Sale | David R Pelizzon (Director and 10% owner) sold 250,000 shares indirectly (by entity) at about $20.62 ($5.2M). Holdings by entity down 2% to 10,895,045 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Nov 25, 2025 |
| Nov 20, 2025 | Sale | Tyson Eliot Marshall (General Counsel & Corp. Sec.) sold 70,000 shares at about $19.51 ($1.4M). Holdings down 16% to 368,331 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Nov 21, 2025 |
| Nov 12, 2025 | Sale | Squadron Capital LLC (10% owner) sold 250,000 shares at about $20.80 ($5.2M). Holdings down 2% to 11,145,045 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Nov 14, 2025 |
| Nov 12, 2025 | Sale | David R Pelizzon (Director and 10% owner) sold 250,000 shares indirectly (by entity) at about $20.80 ($5.2M). Holdings by entity down 2% to 11,145,045 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Nov 14, 2025 |
| Nov 12, 2025 | Sale | Squadron Capital Holdings LLC (10% owner) sold 250,000 shares indirectly at about $20.80 ($5.2M). Indirect holdings down 2% to 11,145,045 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Nov 14, 2025 |
| Nov 12, 2025 | Sale | Jennifer N. Pritzker (10% owner) sold 250,000 shares indirectly at about $20.80 ($5.2M). Indirect holdings down 2% to 11,145,045 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Nov 14, 2025 |
| Nov 3, 2025 | Sale | Jeffrey P Rydin (Director) sold 200,000 shares at $19.32 ($3.9M). Holdings down 34% to 385,441 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Nov 5, 2025 |
| Nov 3, 2025 | Planned (10b5-1) | Patrick Miles (CEO and Director) sold 100,000 shares at about $18.96 ($1.9M), marked as a 10b5-1 plan trade. Holdings down 2% to 5,364,078 shares. | SEC filing Filed Nov 5, 2025 |
22 routine transactions (such as grants, option exercises or tax withholding) are not listed.
Cluster buys
No cluster buys in the last 12 months.
Red flags
No red flags in the last 12 months.
Key events
No key events in the last 12 months.
8-K filings, last 12 months
No 8-K filings in the last 12 months.
Red flags are objective triggers only: the item or form filed, never an opinion.
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