Karen K McGinnis insider trades: Alphatec Holdings (ATEC) stock buys and sales
Trades on the price chart
Daily close, with an arrow on each day they bought or sold
Companies
Where Karen reports to the SEC
and 2 more companies
Open-market buys and sales
16 trades reported on SEC Form 4, newest first
| Date | Stock | Type | Shares | Price | Value | Holding | Reported |
|---|---|---|---|---|---|---|---|
| Jun 11, 2026 | ATEC | ↓ Sell | 6,050 | $8.01 | $48K | Direct | Jun 12, 2026 (1d) |
| Jun 11, 2025 | ATEC | ↓ Sell | 3,963 | $12.11 | $48K | Direct | Jun 13, 2025 (2d) |
| Mar 3, 2025 | ATEC | ↓ Sell | 38,320 | $12.26 | $470K | Direct | Mar 4, 2025 (1d) |
| Jul 26, 2021 | ABSI | ↑ Buy | 15,000 | $16.00 | $240K | Direct | Jul 28, 2021 (2d) |
| Feb 18, 2021 | ILMN | ↓ Sell10b5-1 | 666 | $486.75 | $324K | Direct | Feb 22, 2021 (4d) |
| Feb 2, 2021 | ILMN | ↓ Sell10b5-1 | 72 | $444.84 | $32K | Direct | Feb 3, 2021 (1d) |
| Nov 18, 2020 | ILMN | ↓ Sell10b5-1 | 218 | $300.00 | $65K | Direct | Nov 19, 2020 (1d) |
| Nov 6, 2020 | ILMN | ↓ Sell10b5-1 | 312 | $310.10 | $97K | Direct | Nov 9, 2020 (3d) |
| Aug 10, 2020 | ILMN | ↓ Sell10b5-1 | 1,856 | $357.01 | $663K | Direct | Aug 12, 2020 (2d) |
| Jun 14, 2013 | MCZ | ↑ Buy | 213,000 | $0.47 | $100K | Direct | Jun 18, 2013 (4d) |
| Dec 3, 2010 | CYMI | ↓ Sell | 609 | $41.09 | $25K | Direct | Dec 6, 2010 (3d) |
| Dec 1, 2010 | CYMI | ↓ Sell | 5,000 | $39.02 | $195K | Direct | Dec 1, 2010 (0d) |
| Nov 12, 2008 | NSIT | ↑ Buy | 18,990 | $5.27 | $100K | Direct | Nov 14, 2008 (2d) |
| Aug 17, 2007 | NSIT | ↓ Sell | 6,900 | $24.29 | $168K | Direct | Aug 17, 2007 (0d) |
| Aug 13, 2007 | NSIT | ↓ Sell | 23,105 | $24.05 | $556K | Direct | Aug 14, 2007 (1d) |
| Nov 3, 2005 | NSIT | ↓ Sell | 27,917 | $21.05 | $588K | Direct | Nov 7, 2005 (4d) |
Each row is one filing's trades in one stock, summed. Shares and prices are as filed, before any later stock split.
Other ATEC insiders
Open-market trades in the last 12 months
About Karen K McGinnis's insider trades
Karen K McGinnis is an insider at Alphatec Holdings (ATEC). Since Nov 3, 2005, Karen has reported 3 open-market purchases worth $440K and 13 sales worth $3.3M on SEC Form 4. In the last 12 months: 1 sale ($48K).
5 sales (36% of the value sold) were made under a Rule 10b5-1 trading plan, which is set up months in advance and runs on a schedule, so they say little about how the insider sees the stock today.
Their filings also include grants and awards (39 filings), shares withheld for taxes (14 filings), option exercises (12 filings), shares returned to the company (1 filing). These aren't open-market trades and aren't counted above.
How to read insider trades
Officers, directors and owners of more than 10% of a company must report trades in its stock on SEC Form 4, usually within two business days. Purchases with their own money are the stronger signal: insiders sell for many reasons (taxes, diversification, a house), but buy for one. See every ATEC insider trade, the latest insider trades across the market, or cluster buys, when several insiders buy the same stock within days.