Marc N Casper 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 Marc reports to the SEC
Open-market buys and sales
113 trades reported on SEC Form 4, newest first
| Date | Stock | Type | Shares | Price | Value | Holding | Reported |
|---|---|---|---|---|---|---|---|
| Aug 24, 2026 | TMO | ↓ Sell | 275 | $627.05 | $172K | Direct | Aug 26, 2026 (2d) |
| Aug 21, 2026 | TMO | ↓ Sell | 20,000 | $628.09 | $12.6M | Direct | Aug 24, 2026 (3d) |
| Aug 7, 2026 | TMO | ↓ Sell | 4,608 | $586.12 | $2.7M | By Floral Park Associates, Inc. | Aug 10, 2026 (3d) |
| Aug 7, 2026 | TMO | ↓ Sell | 275 | $586.10 | $161K | Direct | Aug 10, 2026 (3d) |
| Aug 6, 2026 | TMO | ↓ Sell | 10,000 | $574.47 | $5.7M | Direct | Aug 7, 2026 (1d) |
| Aug 6, 2026 | TMO | ↓ Sell | 5,000 | $574.45 | $2.9M | By Floral Park Associates, Inc. | Aug 7, 2026 (1d) |
| Aug 5, 2026 | TMO | ↓ Sell | 10,000 | $575.23 | $5.8M | Direct | Aug 7, 2026 (2d) |
| Aug 5, 2026 | TMO | ↓ Sell | 5,000 | $575.23 | $2.9M | By Floral Park Associates, Inc. | Aug 7, 2026 (2d) |
| Mar 5, 2026 | TMO | ↓ Sell | 4,000 | $514.82 | $2.1M | Direct | Mar 9, 2026 (4d) |
| Mar 4, 2026 | TMO | ↓ Sell | 10,000 | $507.75 | $5.1M | Direct | Mar 5, 2026 (1d) |
| Oct 27, 2025 | TMO | ↓ Sell | 24,354 | $571.33 | $13.9M | Direct | Oct 28, 2025 (1d) |
| Sep 5, 2025 | TMO | ↓ Sell | 400 | $500.50 | $200K | Direct | Sep 9, 2025 (4d) |
| Aug 22, 2025 | TMO | ↓ Sell | 10,000 | $500.96 | $5.0M | Direct | Aug 26, 2025 (4d) |
| Aug 20, 2025 | TMO | ↓ Sell | 496 | $500.09 | $248K | Direct | Aug 21, 2025 (1d) |
| Aug 7, 2025 | TMO | ↓ Sell | 18,000 | $452.99 | $8.2M | Direct | Aug 7, 2025 (0d) |
| Mar 5, 2025 | TMO | ↓ Sell | 18,000 | $518.16 | $9.3M | Direct | Mar 6, 2025 (1d) |
| Dec 3, 2024 | TMO | ↓ Sell | 20,000 | $531.23 | $10.6M | Direct | Dec 4, 2024 (1d) |
| Nov 8, 2024 | TMO | ↓ Sell | 9,000 | $552.86 | $5.0M | By Floral Park Associates, Inc. | Nov 12, 2024 (4d) |
| Nov 7, 2024 | TMO | ↓ Sell | 20,000 | $557.94 | $11.2M | By Floral Park Associates, Inc. | Nov 8, 2024 (1d) |
| Nov 1, 2024 | TMO | ↓ Sell | 5,850 | $557.89 | $3.3M | Direct | Nov 4, 2024 (3d) |
| Oct 31, 2024 | TMO | ↓ Sell | 20,000 | $550.51 | $11.0M | Direct | Nov 1, 2024 (1d) |
| Oct 29, 2024 | TMO | ↓ Sell | 20,000 | $552.46 | $11.0M | Direct | Oct 30, 2024 (1d) |
| Sep 4, 2024 | TMO | ↓ Sell | 20,000 | $608.45 | $12.2M | Direct | Sep 5, 2024 (1d) |
| Jul 31, 2024 | TMO | ↓ Sell | 10,000 | $617.21 | $6.2M | Direct | Aug 1, 2024 (1d) |
| Jul 30, 2024 | TMO | ↓ Sell | 16,300 | $606.12 | $9.9M | Direct | Jul 31, 2024 (1d) |
| Jun 4, 2024 | TMO | ↓ Sell | 20,000 | $568.72 | $11.4M | Direct | Jun 5, 2024 (1d) |
| May 1, 2024 | TMO | ↓ Sell | 10,000 | $573.74 | $5.7M | Direct | May 2, 2024 (1d) |
| Apr 30, 2024 | TMO | ↓ Sell | 20,000 | $574.18 | $11.5M | Direct | May 1, 2024 (1d) |
| Mar 25, 2024 | SNPS | ↑ Buy | 750 | $585.45 | $439K | Direct | Mar 27, 2024 (2d) |
| Mar 13, 2024 | TMO | ↓ Sell | 10,000 | $594.58 | $5.9M | Direct | Mar 14, 2024 (1d) |
| Mar 12, 2024 | TMO | ↓ Sell | 20,000 | $596.67 | $11.9M | Direct | Mar 13, 2024 (1d) |
| Feb 29, 2024 | TMO | ↓ Sell | 10,000 | $571.08 | $5.7M | Direct | Mar 4, 2024 (4d) |
| Feb 28, 2024 | TMO | ↓ Sell | 20,000 | $567.45 | $11.3M | Direct | Feb 29, 2024 (1d) |
| Feb 15, 2024 | TMO | ↓ Sell | 5,547 | $550.62 | $3.1M | By Floral Park Associates, Inc. | Feb 20, 2024 (5d) |
| Feb 7, 2024 | TMO | ↓ Sell | 10,000 | $555.63 | $5.6M | By Floral Park Associates, Inc. | Feb 8, 2024 (1d) |
| Nov 7, 2023 | TMO | ↓ Sell | 11,600 | $455.21 | $5.3M | Direct | Nov 8, 2023 (1d) |
| Nov 3, 2023 | TMO | ↓ Sell | 20,000 | $450.82 | $9.0M | Direct | Nov 6, 2023 (3d) |
| Aug 8, 2023 | TMO | ↓ Sell | 11,600 | $551.75 | $6.4M | Direct | Aug 9, 2023 (1d) |
| Aug 4, 2023 | TMO | ↓ Sell | 20,000 | $549.67 | $11.0M | Direct | Aug 7, 2023 (3d) |
| May 9, 2023 | TMO | ↓ Sell | 11,600 | $543.08 | $6.3M | Direct | May 10, 2023 (1d) |
| May 5, 2023 | TMO | ↓ Sell | 20,000 | $546.10 | $10.9M | Direct | May 8, 2023 (3d) |
| Mar 14, 2023 | TMO | ↓ Sell | 15,000 | $549.14 | $8.2M | By Floral Park Associates, Inc. | Mar 15, 2023 (1d) |
| Feb 14, 2023 | TMO | ↓ Sell | 11,600 | $574.14 | $6.7M | Direct | Feb 15, 2023 (1d) |
| Feb 10, 2023 | TMO | ↓ Sell | 40,000 | $572.31 | $22.9M | Direct | Feb 13, 2023 (3d) |
| Nov 17, 2022 | TMO | ↓ Sell | 15,000 | $531.46 | $8.0M | By Floral Park Associates, Inc. | Nov 18, 2022 (1d) |
| Nov 11, 2022 | TMO | ↓ Sell | 20,000 | $526.57 | $10.5M | Direct | Nov 14, 2022 (3d) |
| Nov 7, 2022 | TMO | ↓ Sell | 18,100 | $490.83 | $8.9M | Direct | Nov 8, 2022 (1d) |
| Nov 3, 2022 | TMO | ↓ Sell | 11,800 | $500.06 | $5.9M | Direct | Nov 4, 2022 (1d) |
| Nov 3, 2022 | TMO | ↓ Sell | 8,200 | $487.45 | $4.0M | Direct | Nov 4, 2022 (1d) |
| Nov 1, 2022 | TMO | ↓ Sell | 20,000 | $514.39 | $10.3M | Direct | Nov 2, 2022 (1d) |
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 Marc N Casper's insider trades
Marc N Casper is Chairman & CEO at Thermo Fisher Scientific (TMO). Since Oct 2, 2006, Marc has reported 2 open-market purchases worth $665K and 111 sales worth $800.9M on SEC Form 4. In the last 12 months: 10 sales ($40.0M).
Their filings also include option exercises (86 filings), shares withheld for taxes (73 filings), grants and awards (65 filings), gifts (25 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.