ATEC (Alphatec Holdings, Inc.)

Insider Trading Activity

Every open-market purchase and sale reported by ATEC officers, directors and 10%+ beneficial owners on SEC Form 4, which must be filed within two business days of the transaction. Sales often reflect scheduled 10b5-1 plans or tax withholding rather than a directional view, so read counts alongside the size and the filer.

Market data may be delayed, incomplete, or inaccurate. Not a recommendation to buy, sell, or hold any security. Verify quotes with your broker before trading. See Terms §17.

Form 4 Filings
50
most recent
Open-Market Buys
1
code P
Sales
29
code S
Reporting Insiders
25
current holders
ATEC — Recent Form 4 Transactions (latest 2026-08-07)
FiledInsiderRole TypeSharesValue
2026-08-07 Tyson Eliot Marshall GENERAL COUNSEL & CORP. SEC. Sell
2026-08-07 Tyson Eliot Marshall GENERAL COUNSEL & CORP. SEC. Sell
2026-06-12 KAREN K MCGINNIS Director MIXED
2026-06-12 David M Demski Director A
2026-06-12 David R Pelizzon Director A
2026-06-12 Keith Valentine Director A
2026-06-12 Quentin S. Blackford Director A
2026-06-12 Mortimer Berkowitz III Director A
2026-05-11 Keith Valentine Director Buy
2026-04-09 Tyson Eliot Marshall GENERAL COUNSEL & CORP. SEC. MIXED
2026-03-17 Scott Lish CHIEF OPERATING OFFICER Sell
2026-03-17 John Todd Koning CHIEF FINANCIAL OFFICER Sell
2026-03-13 David Sponsel EVP, SALES Sell
2026-03-10 Craig E Hunsaker EVP, PEOPLE & CULTURE MIXED
2026-03-09 John Todd Koning CHIEF FINANCIAL OFFICER F
2026-03-09 Patrick Miles CEO F
2026-03-09 Tyson Eliot Marshall GENERAL COUNSEL & CORP. SEC. Sell
2026-02-27 John Todd Koning CHIEF FINANCIAL OFFICER A
2026-02-27 Craig E Hunsaker EVP, PEOPLE & CULTURE A
2026-02-27 Scott Lish CHIEF OPERATING OFFICER A
2026-02-27 Patrick Miles CEO A
2026-02-27 David Sponsel EVP, SALES A
2026-02-27 Tyson Eliot Marshall GENERAL COUNSEL & CORP. SEC. A
2026-02-17 Craig E Hunsaker EVP, PEOPLE & CULTURE MIXED
2026-02-06 David Sponsel EVP, SALES Sell
2026-02-04 Craig E Hunsaker EVP, PEOPLE & CULTURE Sell
2026-01-06 Patrick Miles CEO Sell
2025-12-18 David R Pelizzon Director Sell
2025-12-18 Scott Lish CHIEF OPERATING OFFICER Sell
2025-12-12 Craig E Hunsaker EVP, PEOPLE & CULTURE Sell
2025-12-12 David Sponsel EVP, SALES Sell
2025-12-12 David M Demski Director Sell
2025-12-10 David R Pelizzon Director Sell
2025-12-10 Squadron Capital LLC 10%+ Owner Sell
2025-12-10 Squadron Capital Holdings LLC 10%+ Owner Sell
2025-12-10 Patrick Miles CEO F
2025-12-10 David Sponsel EVP, SALES Sell
2025-12-10 John Todd Koning CHIEF FINANCIAL OFFICER F
2025-12-10 Jennifer N. Pritzker 10%+ Owner Sell
2025-12-09 Scott Lish CHIEF OPERATING OFFICER Sell
2025-12-09 Tyson Eliot Marshall GENERAL COUNSEL & CORP. SEC. Sell
2025-12-03 Patrick Miles CEO Sell
2025-11-26 Squadron Capital Holdings LLC 10%+ Owner Sell
2025-11-26 Jennifer N. Pritzker 10%+ Owner Sell
2025-11-25 Squadron Capital LLC 10%+ Owner Sell
2025-11-25 David R Pelizzon Director Sell
2025-11-21 Scott Lish CHIEF OPERATING OFFICER MIXED
2025-11-21 Tyson Eliot Marshall GENERAL COUNSEL & CORP. SEC. Sell
2025-11-14 Squadron Capital Holdings LLC 10%+ Owner Sell
2025-11-14 David R Pelizzon Director Sell
ATEC — Current Insider Holders
InsiderRole Shares HeldValue
10%+ Owner 11,081,538
Director 11,081,538
Director 10,773,884
10%+ Owner 10,673,879
10%+ Owner 10,673,879
CEO 5,789,451
Director 3,622,109
Director 2,571,196
Director 2,210,602
10%+ Owner 1,750,880
EVP, PEOPLE & CULTURE 1,725,609
Director 1,155,785
Director 899,130
Director 898,098
CHIEF OPERATING OFFICER 815,704
Director 797,893
Director 796,637
President & COO 790,198
EVP & CFO 670,644
EVP, MARKETING 655,382
GENERAL COUNSEL & CORP. SEC. 630,398
CHIEF FINANCIAL OFFICER 600,721
Director 600,381
EVP, CLINICAL STRATEGIES 540,098
EVP, SALES 504,932
How to read Form 4 activity

Form 4 reports a change in beneficial ownership by an officer, director or 10%+ holder, and must be filed within two business days of the transaction — so this is close to real time, unlike the 45-day-lagged 13F institutional data.

Transaction codes matter more than the raw buy/sell count. Code P is an open-market purchase — an insider choosing to buy with their own money, which is the signal most research treats as informative. Code S is a sale, but sales are frequently pre-scheduled under a 10b5-1 plan or cover tax withholding on vesting equity, so a run of sales often says nothing directional. Codes A and M are grants and option exercises rather than open-market decisions.

Full filing history and per-insider positions are on the ATEC quote page; the site-wide leaderboard is on the insider transactions hub.