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Thermo Fisher Scientific stock timeline
A year of the price with every insider trade, planned sale, earnings report and material 8-K marked
252 sessions+23.1% to $694.76
Thermo Fisher Scientific (TMO) stock rose 23% over the last 252 sessions, to $694.76. On the way it reported 0 quarters, its insiders filed 1 open-market trade and 14 Form 144 notices of planned sales, and the company filed 4 material 8-Ks. Each is marked on the price and listed with what the stock did next.
Each mark, and what followed
| Date | Kind | What | Next session | 5 sessions | 21 sessions |
|---|---|---|---|---|---|
| Oct 30, 2026 | 8-K | Directors and officers: departures, appointments, pay | −2.1% (−1.6% vs SPY) | −0.3% (+2.4% vs SPY) | — |
| Oct 28, 2026 | Form 144 | Form 144: Lisa Britt plans to sell $2.0M | +1.6% (+1.3% vs SPY) | +0.8% (+2.8% vs SPY) | — |
| Oct 28, 2026 | Insider sale | Britt Lisa P. sold $2.0M | +1.6% (+1.3% vs SPY) | +0.8% (+2.8% vs SPY) | — |
| Aug 31, 2026 | Form 144 | Form 144: Gianluca Pettiti plans to sell $2.5M | −0.8% (−0.5% vs SPY) | −1.4% (−1.5% vs SPY) | +8.9% (+9.3% vs SPY) |
| Aug 24, 2026 | Form 144 | Form 144: Marc N. Casper plans to sell $172K | −0.1% (+0.2% vs SPY) | −1.1% (−1.6% vs SPY) | +4.6% (+3.4% vs SPY) |
| Aug 21, 2026 | Form 144 | Form 144: Marc N. Casper plans to sell $6.3M | +0.3% (−0.1% vs SPY) | +0.5% (−0.6% vs SPY) | +4.9% (+3.2% vs SPY) |
| Aug 20, 2026 | Form 144 | Form 144: Marc N. Casper plans to sell $6.3M | +2.3% (+3.1% vs SPY) | +3.2% (+3.6% vs SPY) | +6.0% (+6.8% vs SPY) |
| Aug 19, 2026 | Form 144 | Form 144: Lisa Britt plans to sell $7.0M | +4.1% (+3.9% vs SPY) | +6.4% (+6.6% vs SPY) | +11.2% (+11.8% vs SPY) |
| Aug 11, 2026 | Form 144 | Form 144: Michael D Shafer plans to sell $15.3M | +0.9% (+1.2% vs SPY) | −2.4% (−2.4% vs SPY) | +1.0% (+2.4% vs SPY) |
| Aug 7, 2026 | Form 144 | Form 144: Marc N. Casper plans to sell $2.8M | +2.4% (+1.8% vs SPY) | +2.7% (+1.5% vs SPY) | +5.7% (+5.4% vs SPY) |
| Aug 7, 2026 | Form 144 | Form 144: Joseph R. Holmes plans to sell $246K | +2.4% (+1.8% vs SPY) | +2.7% (+1.5% vs SPY) | +5.7% (+5.4% vs SPY) |
| Aug 6, 2026 | Form 144 | Form 144: Marc N. Casper plans to sell $8.7M | +0.4% (+0.5% vs SPY) | +4.3% (+3.9% vs SPY) | +6.8% (+6.3% vs SPY) |
| Aug 6, 2026 | Form 144 | Form 144: Lisa P. Britt plans to sell $3.4M | +0.4% (+0.5% vs SPY) | +4.3% (+3.9% vs SPY) | +6.8% (+6.3% vs SPY) |
| Aug 5, 2026 | Form 144 | Form 144: Marc N Casper plans to sell $8.5M | +2.3% (+2.5% vs SPY) | +6.9% (+7.0% vs SPY) | +7.5% (+8.3% vs SPY) |
| Jul 27, 2026 | Form 144 | Form 144: Gianluca Pettiti plans to sell $226K | −1.6% (−1.6% vs SPY) | +1.0% (0.0% vs SPY) | +10.1% (+6.8% vs SPY) |
| Jul 27, 2026 | Form 144 | Form 144: Gianluca Pettiti plans to sell $226K | −1.6% (−1.6% vs SPY) | +1.0% (0.0% vs SPY) | +10.1% (+6.8% vs SPY) |
| Feb 12, 2026 | 8-K | Material definitive agreement | −1.0% (−1.1% vs SPY) | +0.2% (−1.0% vs SPY) | −8.0% (−6.2% vs SPY) |
| Jan 12, 2026 | 8-K | Directors and officers: departures, appointments, pay | −0.5% (−0.7% vs SPY) | 0.0% (+0.3% vs SPY) | −13.7% (−13.4% vs SPY) |
| Dec 1, 2025 | 8-K | Material definitive agreement | −0.8% (−1.0% vs SPY) | −2.9% (−3.4% vs SPY) | −0.9% (−1.5% vs SPY) |
Insiders’ record here
In the year on the chart, Thermo Fisher Scientific's insiders reported 0 open-market buys ($0) and 1 sale ($2.0M).
Across the whole universe (19,782 scored trades), insider buys beat the market 46% of the time and sales were followed by a lagging stock 61% of the time; buys of $1M or more 39%. Every pattern →
What this kind of 8-K usually did
| Item | 8-Ks | Next session, median | Up next session | 21 sessions, median | Typical size |
|---|---|---|---|---|---|
| 1.01 Material definitive agreement | 23,525 | 0.0% | 51% | +1.0% | ±1.4% |
| 5.02 Directors and officers: departures, appointments, pay | 39,174 | −0.1% | 48% | +0.7% | ±1.4% |
Across every company in the move-odds universe, measured from the close before the filing. Every 8-K item ranked →
Thermo Fisher Scientific: every quarter → Live insider trades →
Prices are daily closes; filings and trades are as filed with the SEC (Form 4 within two business days of the trade, 8-K within four of the event). Moves after a mark are the stock's close-to-close change and the same for SPY; they describe the record, not what the next one will do. Not investment advice.