ATEC insider buying
3 cluster buysAlphatec Holdings, Inc.
When two or more insiders at Alphatec Holdings, Inc. buy ATEC in a qualifying detection window, the grouped purchases provide a starting point for further research. Below is every cluster we've detected in ATEC plus the full record of qualifying open-market buys, each parsed directly from Form 4 filings and linked back to the source on SEC EDGAR.
Detected clusters
- Sep 10 – Oct 30, 2026Detected Nov 2, 2026Executive buyer2 insidersTotal bought$1.4MMarket capUnknown
- Aug 21 – Aug 23, 2024Detected Aug 23, 20243 insidersTotal bought$585.1KMarket cap$1.4B
- Aug 2 – Aug 2, 2024Detected Aug 2, 20242 insidersTotal bought$517.9KMarket cap$1.4B
All notable open-market buys in ATEC
Every open-market Form 4 purchase, newest first. Click an insider to see their full buying record across companies.
| Date | Insider | Shares | Price | Value | Filing |
|---|---|---|---|---|---|
| Oct 30, 2026 | Demski David Mcluster Director | 60,000 | $6.81 | $408.6K | SEC ↗ |
| Sep 10, 2026 | Miles Patrickcluster Director, CEO | 115,000 | $8.81 | $1.0M | SEC ↗ |
| May 11, 2026 | Director | 35,000 | $7.00 | $245.0K | SEC ↗ |
| May 8, 2026 | Director | 43,847 | $7.54 | $330.6K | SEC ↗ |
| May 7, 2026 | Director | 56,153 | $7.49 | $420.6K | SEC ↗ |
| Aug 23, 2024 | Bakst Evancluster Director | 35,000 | $5.76 | $201.6K | SEC ↗ |
| Aug 23, 2024 | Pelizzon David Rcluster Director, 10% Owner | 16,978 | $5.89 | $100.0K | SEC ↗ |
| Aug 21, 2024 | Demski David Mcluster Director | 50,000 | $5.67 | $283.5K | SEC ↗ |
| Aug 2, 2024 | Demski David Mcluster Director | 40,000 | $6.56 | $262.4K | SEC ↗ |
| Aug 2, 2024 | Valentine Keithcluster Director | 39,000 | $6.55 | $255.5K | SEC ↗ |
ATEC insider buying — FAQ
- Are insiders buying ATEC stock?
- Yes — 5 distinct insiders have bought ATEC (Alphatec Holdings, Inc.) on the open market, including 3 cluster buys where two or more insiders bought within a rolling window. The most recent qualifying activity was Nov 2, 2026.
- How much ATEC stock have insiders bought?
- Insiders have bought a combined $3.5M of ATEC across 10 open-market purchases, based on SEC Form 4 filings.
- What is an insider cluster buy in ATEC?
- A cluster buy is two or more distinct Alphatec Holdings, Inc. insiders — officers, directors, or 10% owners — each buying ATEC on the open market within a rolling window. ATEC has 3 detected cluster buys to date.
- Where does this ATEC insider trading data come from?
- Every figure is parsed directly from SEC Form 4 filings on EDGAR, and each purchase on this page links back to its original filing document.
How we track insider buying in ATEC
We continuously poll SEC EDGAR for new Form 4 filings and parse every open-market purchase (transaction code P). A cluster is recorded when two or more distinct insiders — officers, directors, or 10% owners — each buy ATEC within a rolling window. We track clusters at every company size, from micro-caps to mega-caps. Transactions link to official filings; prices and market capitalizations may be cached market data. Read our methodology and data limits before interpreting the figures. What counts as a cluster buy?
This page is informational and reflects public filing data. It is not investment advice or a recommendation regarding ATEC.