Tyson Eliot Marshall insider trades: Alphatec Holdings (ATEC) stock sales
Trades on the price chart
Daily close, with an arrow on each day they bought or sold
Companies
Where Tyson reports to the SEC
Open-market buys and sales
9 trades reported on SEC Form 4, newest first
| Date | Stock | Type | Shares | Price | Value | Holding | Reported |
|---|---|---|---|---|---|---|---|
| Aug 5, 2026 | ATEC | ↓ Sell | 8,168 | $9.65 | $79K | Direct | Aug 7, 2026 (2d) |
| Mar 5, 2026 | ATEC | ↓ Sell | 88,835 | $12.49 | $1.1M | Direct | Mar 9, 2026 (4d) |
| Dec 5, 2025 | ATEC | ↓ Sell | 22,889 | $21.47 | $492K | Direct | Dec 9, 2025 (4d) |
| Nov 20, 2025 | ATEC | ↓ Sell | 70,000 | $19.51 | $1.4M | Direct | Nov 21, 2025 (1d) |
| Aug 5, 2025 | ATEC | ↓ Sell | 30,970 | $13.70 | $424K | Direct | Aug 5, 2025 (0d) |
| Jul 10, 2025 | ATEC | ↓ Sell | 1,500 | $12.00 | $18K | Direct | Jul 14, 2025 (4d) |
| Jun 12, 2024 | ATEC | ↓ Sell | 50,232 | $10.88 | $547K | Direct | Jun 14, 2024 (2d) |
| Mar 6, 2024 | ATEC | ↓ Sell | 9,225 | $13.16 | $121K | Direct | Mar 8, 2024 (2d) |
| Mar 1, 2024 | ATEC | ↓ Sell | 11,825 | $13.30 | $157K | Direct | Mar 4, 2024 (3d) |
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 Tyson Eliot Marshall's insider trades
Tyson Eliot Marshall is General Counsel & Corp. Sec. at Alphatec Holdings (ATEC). Since Mar 1, 2024, Tyson has reported no open-market purchases and 9 sales worth $4.3M on SEC Form 4. In the last 12 months: 4 sales ($3.0M).
Their filings also include grants and awards (6 filings), shares withheld for taxes (2 filings), option exercises (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.