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 40 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 ·

202610 of 16 preview events

Date	Insider	Activity	Trade value (USD)	% of prior holding
Oct 30, 2026	Demski David M Director	Purchase10b5-1 footnote	$408.60K 60,000 shares bought	13.90% added Direct holding	▾
Sep 10, 2026	Miles Patrick CEO · Director	Purchase	$1.01M 115,000 shares bought	1.99% added Direct holding	▾
Aug 5, 2026	Marshall Tyson Eliot GENERAL COUNSEL & CORP. SEC.	Sale10b5-1 footnote	$78.82K 8,168 shares sold	1.28% sold Direct holding	▾
Jun 11, 2026	MCGINNIS KAREN K Director	Sale10b5-1 footnote	$48.46K 6,050 shares sold	6.01% sold Direct holding	▾
May 11, 2026	Valentine Keith Director	Purchase	$245.00K 35,000 shares bought	17.74% added Direct holding	▾
May 8, 2026	Valentine Keith Director	Purchase	$330.61K 43,847 shares bought	28.58% added Direct holding	▾
May 7, 2026	Valentine Keith Director	Purchase	$420.59K 56,153 shares bought	57.73% added Direct holding	▾
Mar 13, 2026	Lish Scott CHIEF OPERATING OFFICER	Sale	$3.20M 260,535 shares sold	24.21% sold Direct holding	▾
Mar 13, 2026	Koning John Todd CHIEF FINANCIAL OFFICER	Sale10b5-1 footnote	$986.19K 79,789 shares sold	11.72% sold Direct holding	▾
Mar 11, 2026	Sponsel David EVP, SALES	Sale10b5-1 footnote	$2.05M 163,452 shares sold	24.45% sold Direct holding	▾

Showing 16 / 16 record groups in 2026. The complete set is available through the API.

Alphatec Holdings, Inc. · ATEC

Follow the people behind the trades.

Log in to look up the full history beyond 3 years, use advanced screening & filtering, download CSV, and reach other datasets through the Akkru API.

Download CSV
Earlier filings
Advanced screening & filtering
API & AI access

Already have an account?

＋ New accounts get free API credits to explore data beyond ownership filings.

For AI agents & developers

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 16 of 16 purchase / sale groups and 30 of 40 other groups; the totals and the monthly series cover the whole window.

Without an account: the last 3 years, with the row caps stated on the page. A free account opens all history on file on these pages and the CSV of what a page shows. Rows beyond the caps and bulk retrieval go through the authenticated API / MCP / CLI.

MCP  https://api.akkrudata.ai/mcp

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

Connect to MCP with OAuth and follow the returned pagination. Credits and usage limits depend on the account.

MCP endpoint: https://api.akkrudata.ai/mcp
API / MCP / CLI documentation: /documents
llms.txt: /llms.txt

Sources, coverage & how to read this data

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.