Company · Ownership research

Alphatec Holdings, Inc. ATEC

CIK 0001350653

Form 4 transactions dated Nov 1, 2023 to Nov 8, 2026, as reported to the SEC.

Insider trading Initial holdings Institutional holders

This page lists 30 of 71 rows; the complete set is available through the API.

Insider filings on file run through Nov 2, 2026.

Insider purchases & sales

Purchased: $4.35M
Sold: $128.06M

Nov 1, 2023 – Nov 2, 2026
Available records · partial months are marked ·

202510 of 30 preview events · 71 available in 2025

Date	Insider	Activity	Trade value (USD)	% of prior holding
Dec 16, 2025	Lish Scott CHIEF OPERATING OFFICER	Sale10b5-1 footnote	$390.84K 19,900 shares sold	3.01% sold Direct holding	▾
Dec 16, 2025	Pelizzon David R Director	Sale	$4.92M 250,000 shares sold	2.35% sold LLC holding	▾
Dec 11, 2025	Demski David M Director	Sale	$636.00K 30,000 shares sold	6.98% sold Direct holding	▾
Dec 10, 2025	Sponsel David EVP, SALES	Sale10b5-1 footnote	$438.79K 21,106 shares sold	4.58% sold Direct holding	▾
Dec 10, 2025	Hunsaker Craig E EVP, PEOPLE & CULTURE	Sale	$679.05K 32,584 shares sold	2.53% sold Direct holding	▾
Dec 9, 2025	Squadron Capital LLC 10% owner	Sale	$606.38K 28,834 shares sold	0.27% sold Direct holding	▾
Dec 9, 2025	Pelizzon David R Director · 10% owner	Sale	$606.38K 28,834 shares sold	0.27% sold LLC holding	▾
Dec 9, 2025	Squadron Capital Holdings LLC 10% owner	Sale	$606.38K 28,834 shares sold	0.27% sold Indirect holding	▾
Dec 9, 2025	Pritzker Jennifer N. 10% owner	Sale	$606.38K 28,834 shares sold	0.27% sold Indirect holding	▾
Dec 8, 2025	Sponsel David EVP, SALES	Sale	$21.19K 988 shares sold	0.21% sold Direct holding	▾

Showing 30 / 71 record groups in 2025. The complete set is available through the API.

Alphatec Holdings, Inc. · ATEC

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The initial HTML of this page carries its exact data as script#research-data (JSON): values, units, scope, preview limits and SEC sources. Read it directly, no script or API key needed; script#research-access says what needs an account. For the year shown, this page lists 30 of 71 purchase / sale groups and 30 of 33 other groups; the totals and the monthly series cover the whole window.

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{"action":"list","ticker":"ATEC","transaction_code":["P","S"],"transaction_form_type":"4","page_size":20}

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Figures are as reported to the SEC and merged with later amendments where Akkru could match them. Preview limits apply to what is listed, not to the totals, which come from the complete reported data. Nothing is zero-filled: a missing quarter or month is shown as missing.

Non-cancelled, non-derivative purchase (P) and sale (S) rows dated inside the public window, as reported. Share totals are on today's split-adjusted basis. Includes open-market and private transactions. Data after the latest filing is not asserted complete and is not zero-filled. A grouped event shares filing, transaction date, security, code, direction, ownership bucket and source. Derivative groups also match underlying security, exercise price, exercise/expiration dates and footnote references. Reported rows are retained; P/S price lots can be grouped. Post-transaction balances are never summed.