Keith Valentine 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 Keith reports to the SEC
Open-market buys and sales
82 trades reported on SEC Form 4, newest first
| Date | Stock | Type | Shares | Price | Value | Holding | Reported |
|---|---|---|---|---|---|---|---|
| May 11, 2026 | ATEC | ↑ Buy | 135,000 | $7.38 | $996K | Direct | May 11, 2026 (0d) |
| Aug 2, 2024 | ATEC | ↑ Buy | 39,000 | $6.55 | $255K | Direct | Aug 5, 2024 (3d) |
| Dec 13, 2019 | SPNE | ↑ Buy | 20,000 | $11.12 | $222K | Direct | Dec 13, 2019 (0d) |
| Nov 18, 2016 | SPNE | ↑ Buy | 25,000 | $7.00 | $175K | Direct | Nov 21, 2016 (3d) |
| May 23, 2016 | SPNE | ↑ Buy | 10,000 | $10.15 | $102K | Direct | May 24, 2016 (1d) |
| Aug 20, 2015 | SPNE | ↑ Buy | 65,100 | $15.33 | $998K | Direct | Aug 20, 2015 (0d) |
| Jan 28, 2015 | NUVA | ↓ Sell10b5-1 | 6,970 | $46.96 | $327K | Direct | Jan 29, 2015 (1d) |
| Dec 19, 2014 | NUVA | ↓ Sell10b5-1 | 5,893 | $47.78 | $282K | Direct | Dec 22, 2014 (3d) |
| Dec 1, 2014 | NUVA | ↓ Sell10b5-1 | 2,500 | $43.66 | $109K | Direct | Dec 2, 2014 (1d) |
| Nov 19, 2014 | NUVA | ↓ Sell10b5-1 | 5,582 | $43.32 | $242K | Direct | Nov 20, 2014 (1d) |
| Nov 3, 2014 | NUVA | ↓ Sell10b5-1 | 2,500 | $40.61 | $102K | Direct | Nov 4, 2014 (1d) |
| Oct 20, 2014 | NUVA | ↓ Sell | 883 | $34.96 | $31K | Direct | Oct 21, 2014 (1d) |
| Oct 2, 2014 | NUVA | ↓ Sell10b5-1 | 2,500 | $35.00 | $88K | Direct | Oct 6, 2014 (4d) |
| Sep 2, 2014 | NUVA | ↓ Sell10b5-1 | 2,500 | $35.14 | $88K | Direct | Sep 3, 2014 (1d) |
| Aug 1, 2014 | NUVA | ↓ Sell10b5-1 | 2,500 | $37.11 | $93K | Direct | Aug 5, 2014 (4d) |
| Jul 1, 2014 | NUVA | ↓ Sell10b5-1 | 2,500 | $35.65 | $89K | Direct | Jul 2, 2014 (1d) |
| Jun 20, 2014 | NUVA | ↓ Sell10b5-1 | 5,000 | $35.00 | $175K | Direct | Jun 24, 2014 (4d) |
| Apr 1, 2014 | NUVA | ↓ Sell10b5-1 | 2,500 | $38.41 | $96K | Direct | Apr 3, 2014 (2d) |
| Jan 16, 2014 | NUVA | ↓ Sell10b5-1 | 20,000 | $37.96 | $759K | Direct | Jan 17, 2014 (1d) |
| Jul 1, 2013 | NUVA | ↓ Sell10b5-1 | 1,698 | $25.00 | $42K | Direct | Jul 3, 2013 (2d) |
| Jan 21, 2011 | NUVA | ↓ Sell | 2,015 | $29.00 | $58K | Direct | Jan 25, 2011 (4d) |
| Jun 18, 2010 | NUVA | ↓ Sell | 5,000 | $40.34 | $202K | Direct | Jun 22, 2010 (4d) |
| May 21, 2010 | NUVA | ↓ Sell | 5,000 | $40.49 | $202K | Direct | May 25, 2010 (4d) |
| Apr 21, 2010 | NUVA | ↓ Sell | 5,000 | $42.08 | $210K | Direct | Apr 22, 2010 (1d) |
| Mar 18, 2010 | NUVA | ↓ Sell | 8,000 | $45.06 | $361K | Direct | Mar 22, 2010 (4d) |
| Jan 22, 2010 | NUVA | ↓ Sell | 5,000 | $31.74 | $159K | Direct | Jan 26, 2010 (4d) |
| Dec 18, 2009 | NUVA | ↓ Sell | 5,000 | $30.00 | $150K | Direct | Dec 22, 2009 (4d) |
| Nov 19, 2009 | NUVA | ↓ Sell | 3,807 | $37.83 | $144K | Direct | Nov 20, 2009 (1d) |
| Oct 20, 2009 | NUVA | ↓ Sell | 6,265 | $43.44 | $272K | Direct | Oct 21, 2009 (1d) |
| Sep 21, 2009 | NUVA | ↓ Sell | 6,152 | $40.96 | $252K | Direct | Sep 22, 2009 (1d) |
| Sep 14, 2009 | NUVA | ↓ Sell | 8,639 | $41.96 | $362K | Direct | Sep 15, 2009 (1d) |
| Aug 20, 2009 | NUVA | ↓ Sell | 6,126 | $40.52 | $248K | Direct | Aug 21, 2009 (1d) |
| Jul 21, 2009 | NUVA | ↓ Sell | 8,000 | $40.71 | $326K | Direct | Jul 23, 2009 (2d) |
| Jun 18, 2009 | NUVA | ↓ Sell | 8,000 | $43.30 | $346K | Direct | Jun 22, 2009 (4d) |
| May 20, 2009 | NUVA | ↓ Sell | 5,000 | $35.14 | $176K | Direct | May 21, 2009 (1d) |
| Apr 22, 2009 | NUVA | ↓ Sell | 5,000 | $30.00 | $150K | Direct | Apr 24, 2009 (2d) |
| Feb 20, 2009 | NUVA | ↓ Sell | 5,000 | $37.45 | $187K | Direct | Feb 24, 2009 (4d) |
| Jan 22, 2009 | NUVA | ↓ Sell | 5,000 | $38.39 | $192K | Direct | Jan 26, 2009 (4d) |
| Dec 18, 2008 | NUVA | ↓ Sell | 5,000 | $36.54 | $183K | Direct | Dec 22, 2008 (4d) |
| Nov 20, 2008 | NUVA | ↓ Sell | 6,000 | $31.72 | $190K | Direct | Nov 21, 2008 (1d) |
| Oct 20, 2008 | NUVA | ↓ Sell | 10,000 | $45.78 | $458K | Direct | Oct 21, 2008 (1d) |
| Sep 19, 2008 | NUVA | ↓ Sell | 10,000 | $53.34 | $533K | Direct | Sep 22, 2008 (3d) |
| Aug 20, 2008 | NUVA | ↓ Sell | 10,000 | $51.71 | $517K | Direct | Aug 21, 2008 (1d) |
| Jul 21, 2008 | NUVA | ↓ Sell | 10,000 | $46.20 | $462K | Direct | Jul 23, 2008 (2d) |
| Jun 19, 2008 | NUVA | ↓ Sell | 10,000 | $44.99 | $450K | Direct | Jun 23, 2008 (4d) |
| May 20, 2008 | NUVA | ↓ Sell | 8,000 | $40.31 | $322K | Direct | May 21, 2008 (1d) |
| Apr 18, 2008 | NUVA | ↓ Sell | 8,000 | $37.35 | $299K | Direct | Apr 18, 2008 (0d) |
| Mar 20, 2008 | NUVA | ↓ Sell | 6,000 | $31.87 | $191K | Direct | Mar 25, 2008 (5d) |
| Feb 21, 2008 | NUVA | ↓ Sell | 10,000 | $39.53 | $395K | Direct | Feb 22, 2008 (1d) |
| Jan 22, 2008 | NUVA | ↓ Sell | 10,000 | $40.58 | $406K | Direct | Jan 24, 2008 (2d) |
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 Keith Valentine's insider trades
Keith Valentine is an insider at Alphatec Holdings (ATEC). Since May 20, 2005, Keith has reported 6 open-market purchases worth $2.7M and 76 sales worth $16.3M on SEC Form 4. In the last 12 months: 1 buy ($996K).
13 sales (15% 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 option exercises (42 filings), grants and awards (36 filings), shares withheld for taxes (22 filings), other transactions (10 filings). 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.