Nelson Chai insider trades: Thermo Fisher Scientific (TMO) stock buys and sales
Trades on the price chart
Daily close, with an arrow on each day they bought or sold
Companies
Where Nelson reports to the SEC
and 1 more company
Open-market buys and sales
23 trades reported on SEC Form 4, newest first
| Date | Stock | Type | Shares | Price | Value | Holding | Reported |
|---|---|---|---|---|---|---|---|
| Feb 19, 2025 | TMO | ↓ Sell | 16 | $528.09 | $8K | Direct | Feb 21, 2025 (2d) |
| Dec 9, 2024 | TMO | ↑ Buy | 20 | $551.90 | $11K | Direct | Feb 21, 2025 (74d) |
| Aug 21, 2023 | UBER | ↓ Sell | 100,000 | $45.05 | $4.5M | Direct | Aug 22, 2023 (1d) |
| Jul 29, 2008 | MER | ↑ Buy | 22,700 | $22.50 | $511K | Direct | Jul 31, 2008 (2d) |
| Apr 17, 2007 | NYX | ↓ Sell | 9,500 | $92.96 | $883K | Direct | Apr 19, 2007 (2d) |
| Apr 17, 2007 | NYX | ↓ Sell | 500 | $92.93 | $46K | Direct | Apr 19, 2007 (2d) |
| Apr 3, 2007 | NYX | ↓ Sell | 9,800 | $95.85 | $939K | Direct | Apr 5, 2007 (2d) |
| Apr 3, 2007 | NYX | ↓ Sell | 200 | $95.64 | $19K | Direct | Apr 5, 2007 (2d) |
| Mar 20, 2007 | NYX | ↓ Sell | 7,800 | $83.38 | $650K | Direct | Mar 22, 2007 (2d) |
| Mar 20, 2007 | NYX | ↓ Sell | 2,200 | $83.31 | $183K | Direct | Mar 22, 2007 (2d) |
| Mar 6, 2007 | NYX | ↓ Sell | 3,300 | $81.48 | $269K | Direct | Mar 9, 2007 (3d) |
| Mar 6, 2007 | NYX | ↓ Sell | 6,700 | $81.57 | $547K | Direct | Mar 8, 2007 (2d) |
| Mar 6, 2007 | NYX | ↓ Sell | 6,700 | $81.57 | $547K | Direct | Mar 8, 2007 (2d) |
| Feb 20, 2007 | NYX | ↓ Sell | 6,600 | $88.78 | $586K | Direct | Feb 22, 2007 (2d) |
| Feb 20, 2007 | NYX | ↓ Sell | 3,400 | $88.87 | $302K | Direct | Feb 22, 2007 (2d) |
| Feb 6, 2007 | NYX | ↓ Sell | 5,260 | $98.31 | $517K | Direct | Feb 8, 2007 (2d) |
| Feb 6, 2007 | NYX | ↓ Sell | 4,740 | $98.78 | $468K | Direct | Feb 8, 2007 (2d) |
| Jan 23, 2007 | NYX | ↓ Sell | 7,400 | $97.19 | $719K | Direct | Jan 25, 2007 (2d) |
| Jan 23, 2007 | NYX | ↓ Sell | 2,600 | $97.38 | $253K | Direct | Jan 25, 2007 (2d) |
| Jan 9, 2007 | NYX | ↓ Sell | 4,300 | $105.07 | $452K | Direct | Jan 11, 2007 (2d) |
| Jan 9, 2007 | NYX | ↓ Sell | 3,100 | $105.57 | $327K | Direct | Jan 11, 2007 (2d) |
| Jan 9, 2007 | NYX | ↓ Sell | 2,600 | $104.66 | $272K | Direct | Jan 11, 2007 (2d) |
| May 10, 2006 | NYX | ↓ Sell | 46,113 | $61.50 | $2.8M | Direct | May 12, 2006 (2d) |
Each row is one filing's trades in one stock, summed. Shares and prices are as filed, before any later stock split.
Other TMO insiders
Open-market trades in the last 12 months
About Nelson Chai's insider trades
Nelson Chai is a director at Thermo Fisher Scientific (TMO). Since May 10, 2006, Nelson has reported 2 open-market purchases worth $522K and 21 sales worth $15.3M on SEC Form 4. There have been no open-market trades in the last 12 months.
Their filings also include shares withheld for taxes (70 filings), grants and awards (41 filings), option exercises (32 filings), shares returned to the company (2 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 TMO insider trade, the latest insider trades across the market, or cluster buys, when several insiders buy the same stock within days.