As of the latest Form 4 filed Apr 29, 2026.
What Thermo Fisher Scientific Inc insiders — officers, directors and 10% owners — have bought and sold in their own stock, straight from their SEC Form 4 filings. Values are shares × the reported transaction price where both are disclosed.
Buys plotted up, sells down; bar height is the disclosed dollar value (shares × reported price). Our Form 4 history is only complete from mid-2026, so early months are sparse — the series fills in as more filings land. Open-market purchases and sales only.
Newest filing first — the 109 most recent filings for TMO.
| Filed | Trade date | Insider | Transaction | Shares | Price | Value | 10b5-1 | Filing |
|---|---|---|---|---|---|---|---|---|
| 2026-04-29 | 2026-04-27 | Pettiti Gianluca President & COO | SSale | −400.00 | $462.66 | $185K | Yes (planned) | Form 4 ↗ |
| 2025-12-11 | 2025-12-10 | SPERLING SCOTT M Director | GGift | −4.39K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2025-12-05 | 2025-12-04 | Lagarde Michel Executive Vice President & COO | SSale | −22.0K | $563.56 | $12.4M | No | Form 4 ↗ |
| 2025-12-05 | 2025-12-04 | Lagarde Michel, Executive Vice President & COO | MExercise | +22.0K | $132.66 | $2.92M | No | Form 4 ↗ |
| 2025-12-05 | 2025-12-04 | Lagarde Michel, Executive Vice President & COO | MExercise | +18.6K | $105.17 | $1.96M | No | Form 4 ↗ |
| 2025-12-04 | 2025-12-03 | Lagarde Michel Executive Vice President & COO | SSale | −2.52K | $584.11 | $1.47M | No | Form 4 ↗ |
| 2025-12-04 | 2025-12-03 | Lagarde Michel, Executive Vice President & COO | SSale | −29.5K | $583.33 | $17.2M | No | Form 4 ↗ |
| 2025-12-04 | 2025-12-03 | Lagarde Michel, Executive Vice President & COO | MExercise | +68.0K | $105.17 | $7.15M | No | Form 4 ↗ |
| 2025-12-04 | 2025-12-02 | Lagarde Michel, Executive Vice President & COO | SSale | −30.0K | $581.92 | $17.5M | No | Form 4 ↗ |
| 2025-12-04 | 2025-12-02 | Lagarde Michel, Executive Vice President & COO | MExercise | +36.0K | $105.17 | $3.79M | No | Form 4 ↗ |
| 2025-11-26 | 2025-11-25 | Shafer Michael D Executive Vice President | SSale | −2.25K | $600.00 | $1.35M | Yes (planned) | Form 4 ↗ |
| 2025-11-26 | 2025-11-25 | Shafer Michael D, Executive Vice President | MExercise | +2.25K | $294.02 | $662K | Yes (planned) | Form 4 ↗ |
| 2025-11-26 | 2025-11-25 | Shafer Michael D, Executive Vice President | SSale | −8.47K | $600.00 | $5.08M | Yes (planned) | Form 4 ↗ |
| 2025-11-26 | 2025-11-25 | Shafer Michael D, Executive Vice President | MExercise | +8.47K | $253.99 | $2.15M | Yes (planned) | Form 4 ↗ |
| 2025-11-17 | 2025-11-14 | Williamson Stephen Sr. VP and CFO | GGift | −433.00 | $0.00 | $0.00 | No | Form 4 ↗ |
| 2025-11-14 | 2025-11-13 | Lagarde Michel Executive Vice President & COO | SSale | −4.64K | $594.42 | $2.76M | No | Form 4 ↗ |
| 2025-11-14 | 2025-11-13 | Lagarde Michel, Executive Vice President & COO | MExercise | +4.64K | $253.99 | $1.18M | No | Form 4 ↗ |
| 2025-11-14 | 2025-11-12 | Britt Lisa P. Sr. VP and Chief HR Officer | SSale | −1.06K | $588.27 | $622K | No | Form 4 ↗ |
| 2025-11-10 | 2025-11-07 | Britt Lisa P. Sr. VP and Chief HR Officer | SSale | −8.47K | $571.67 | $4.84M | No | Form 4 ↗ |
| 2025-11-10 | 2025-11-07 | Britt Lisa P., Sr. VP and Chief HR Officer | MExercise | +8.47K | $253.99 | $2.15M | No | Form 4 ↗ |
| 2025-11-10 | 2025-11-07 | Britt Lisa P., Sr. VP and Chief HR Officer | SSale | −1.75K | $571.40 | $1000K | No | Form 4 ↗ |
| 2025-10-28 | 2025-10-27 | CASPER MARC N Chairman & CEO | SSale | −348.00 | $571.99 | $199K | Yes (planned) | Form 4 ↗ |
| 2025-10-28 | 2025-10-27 | CASPER MARC N, Chairman & CEO | SSale | −728.00 | $570.91 | $416K | Yes (planned) | Form 4 ↗ |
| 2025-10-28 | 2025-10-27 | CASPER MARC N, Chairman & CEO | SSale | −670.00 | $569.93 | $382K | Yes (planned) | Form 4 ↗ |
| 2025-10-28 | 2025-10-27 | CASPER MARC N, Chairman & CEO | SSale | −189.00 | $568.98 | $108K | Yes (planned) | Form 4 ↗ |
| 2025-10-28 | 2025-10-27 | CASPER MARC N, Chairman & CEO | SSale | −141.00 | $567.57 | $80.0K | Yes (planned) | Form 4 ↗ |
| 2025-10-28 | 2025-10-27 | CASPER MARC N, Chairman & CEO | SSale | −181.00 | $566.47 | $103K | Yes (planned) | Form 4 ↗ |
| 2025-10-28 | 2025-10-27 | CASPER MARC N, Chairman & CEO | SSale | −937.00 | $565.47 | $530K | Yes (planned) | Form 4 ↗ |
| 2025-10-28 | 2025-10-27 | CASPER MARC N, Chairman & CEO | SSale | −2.51K | $564.44 | $1.42M | Yes (planned) | Form 4 ↗ |
| 2025-10-28 | 2025-10-27 | CASPER MARC N, Chairman & CEO | SSale | −1.19K | $563.72 | $673K | Yes (planned) | Form 4 ↗ |
| 2025-10-28 | 2025-10-27 | CASPER MARC N, Chairman & CEO | SSale | −241.00 | $562.63 | $136K | Yes (planned) | Form 4 ↗ |
| 2025-10-28 | 2025-10-27 | CASPER MARC N, Chairman & CEO | SSale | −109.00 | $561.68 | $61.2K | Yes (planned) | Form 4 ↗ |
| 2025-10-28 | 2025-10-27 | CASPER MARC N, Chairman & CEO | MExercise | +7.25K | $253.99 | $1.84M | Yes (planned) | Form 4 ↗ |
| 2025-10-28 | 2025-10-24 | Pettiti Gianluca Executive Vice President | SSale | −400.00 | $574.15 | $230K | Yes (planned) | Form 4 ↗ |
| 2025-10-28 | 2025-10-24 | CASPER MARC N Chairman & CEO | SSale | −1.29K | $575.02 | $744K | Yes (planned) | Form 4 ↗ |
| 2025-10-28 | 2025-10-24 | CASPER MARC N, Chairman & CEO | SSale | −7.33K | $574.20 | $4.21M | Yes (planned) | Form 4 ↗ |
| 2025-10-28 | 2025-10-24 | CASPER MARC N, Chairman & CEO | SSale | −4.76K | $573.37 | $2.73M | Yes (planned) | Form 4 ↗ |
| 2025-10-28 | 2025-10-24 | CASPER MARC N, Chairman & CEO | SSale | −2.47K | $572.28 | $1.41M | Yes (planned) | Form 4 ↗ |
| 2025-10-28 | 2025-10-24 | CASPER MARC N, Chairman & CEO | SSale | −1.25K | $571.30 | $714K | Yes (planned) | Form 4 ↗ |
| 2025-10-28 | 2025-10-24 | CASPER MARC N, Chairman & CEO | MExercise | +17.1K | $253.99 | $4.34M | Yes (planned) | Form 4 ↗ |
| 2025-09-09 | 2025-09-05 | CASPER MARC N Chairman & CEO | SSale | −100.00 | $501.01 | $50.1K | Yes (planned) | Form 4 ↗ |
| 2025-09-09 | 2025-09-05 | CASPER MARC N, Chairman & CEO | SSale | −100.00 | $501.00 | $50.1K | Yes (planned) | Form 4 ↗ |
| 2025-09-09 | 2025-09-05 | CASPER MARC N, Chairman & CEO | SSale | −200.00 | $500.00 | $100K | Yes (planned) | Form 4 ↗ |
| 2025-09-09 | 2025-09-05 | CASPER MARC N, Chairman & CEO | MExercise | +400.00 | $253.99 | $102K | Yes (planned) | Form 4 ↗ |
| 2025-09-02 | 2025-08-29 | Holmes Joseph R. VP & Chief Accounting Officer | SSale | −285.00 | $492.63 | $140K | No | Form 4 ↗ |
| 2025-09-02 | 2025-08-29 | Holmes Joseph R., VP & Chief Accounting Officer | SSale | −100.00 | $492.62 | $49.3K | No | Form 4 ↗ |
| 2025-09-02 | 2025-08-29 | Holmes Joseph R., VP & Chief Accounting Officer | MExercise | +385.00 | $253.99 | $97.8K | No | Form 4 ↗ |
| 2025-09-02 | 2025-08-28 | CASPER MARC N Chairman & CEO | FTax | −724.77 | $489.74 | $355K | No | Form 4 ↗ |
| 2025-09-02 | 2025-08-28 | CASPER MARC N, Chairman & CEO | FTax | −686.57 | $489.74 | $336K | No | Form 4 ↗ |
| 2025-09-02 | 2025-08-28 | Williamson Stephen Sr. VP and CFO | FTax | −111.21 | $489.74 | $54.5K | No | Form 4 ↗ |
| 2025-09-02 | 2025-08-28 | Williamson Stephen, Sr. VP and CFO | FTax | −237.88 | $489.74 | $117K | No | Form 4 ↗ |
| 2025-09-02 | 2025-08-28 | Williamson Stephen, Sr. VP and CFO | FTax | −219.51 | $489.74 | $108K | No | Form 4 ↗ |
| 2025-09-02 | 2025-08-28 | Williamson Stephen, Sr. VP and CFO | FTax | −214.67 | $489.74 | $105K | No | Form 4 ↗ |
| 2025-09-02 | 2025-08-28 | Shafer Michael D Executive Vice President | FTax | −114.11 | $489.74 | $55.9K | No | Form 4 ↗ |
| 2025-09-02 | 2025-08-28 | Shafer Michael D, Executive Vice President | FTax | −176.48 | $489.74 | $86.4K | No | Form 4 ↗ |
| 2025-09-02 | 2025-08-28 | Shafer Michael D, Executive Vice President | FTax | −162.46 | $489.74 | $79.6K | No | Form 4 ↗ |
| 2025-09-02 | 2025-08-28 | Shafer Michael D, Executive Vice President | FTax | −145.05 | $489.74 | $71.0K | No | Form 4 ↗ |
| 2025-09-02 | 2025-08-28 | Lowery Frederick M. Executive Vice President | FTax | −118.94 | $489.74 | $58.3K | No | Form 4 ↗ |
| 2025-09-02 | 2025-08-28 | Lowery Frederick M., Executive Vice President | FTax | −186.63 | $489.74 | $91.4K | No | Form 4 ↗ |
| 2025-09-02 | 2025-08-28 | Lowery Frederick M., Executive Vice President | FTax | −187.12 | $489.74 | $91.6K | No | Form 4 ↗ |
| 2025-09-02 | 2025-08-28 | Lowery Frederick M., Executive Vice President | FTax | −175.03 | $489.74 | $85.7K | No | Form 4 ↗ |
| 2025-09-02 | 2025-08-28 | Lagarde Michel Executive Vice President & COO | FTax | −161.97 | $489.74 | $79.3K | No | Form 4 ↗ |
| 2025-09-02 | 2025-08-28 | Lagarde Michel, Executive Vice President & COO | FTax | −275.11 | $489.74 | $135K | No | Form 4 ↗ |
| 2025-09-02 | 2025-08-28 | Lagarde Michel, Executive Vice President & COO | FTax | −262.06 | $489.74 | $128K | No | Form 4 ↗ |
| 2025-09-02 | 2025-08-28 | Lagarde Michel, Executive Vice President & COO | FTax | −262.06 | $489.74 | $128K | No | Form 4 ↗ |
| 2025-09-02 | 2025-08-28 | Holmes Joseph R. VP & Chief Accounting Officer | FTax | −7.04 | $489.74 | $3.45K | No | Form 4 ↗ |
| 2025-09-02 | 2025-08-28 | Holmes Joseph R., VP & Chief Accounting Officer | FTax | −10.86 | $489.74 | $5.32K | No | Form 4 ↗ |
| 2025-09-02 | 2025-08-28 | Holmes Joseph R., VP & Chief Accounting Officer | FTax | −10.57 | $489.74 | $5.18K | No | Form 4 ↗ |
| 2025-09-02 | 2025-08-28 | Holmes Joseph R., VP & Chief Accounting Officer | FTax | −8.51 | $489.74 | $4.17K | No | Form 4 ↗ |
| 2025-09-02 | 2025-08-28 | Pettiti Gianluca Executive Vice President | FTax | −149.40 | $489.74 | $73.2K | No | Form 4 ↗ |
| 2025-09-02 | 2025-08-28 | Pettiti Gianluca, Executive Vice President | FTax | −253.35 | $489.74 | $124K | No | Form 4 ↗ |
| 2025-09-02 | 2025-08-28 | Pettiti Gianluca, Executive Vice President | FTax | −212.26 | $489.74 | $104K | No | Form 4 ↗ |
| 2025-09-02 | 2025-08-28 | Pettiti Gianluca, Executive Vice President | FTax | −199.69 | $489.74 | $97.8K | No | Form 4 ↗ |
| 2025-09-02 | 2025-08-28 | Britt Lisa P. Sr. VP and Chief HR Officer | FTax | −63.34 | $489.74 | $31.0K | No | Form 4 ↗ |
| 2025-09-02 | 2025-08-28 | Britt Lisa P., Sr. VP and Chief HR Officer | FTax | −96.70 | $489.74 | $47.4K | No | Form 4 ↗ |
| 2025-09-02 | 2025-08-28 | Britt Lisa P., Sr. VP and Chief HR Officer | FTax | −87.51 | $489.74 | $42.9K | No | Form 4 ↗ |
| 2025-09-02 | 2025-08-28 | Britt Lisa P., Sr. VP and Chief HR Officer | FTax | −81.23 | $489.74 | $39.8K | No | Form 4 ↗ |
| 2025-08-26 | 2025-08-22 | CASPER MARC N Chairman & CEO | SSale | −598.00 | $502.26 | $300K | Yes (planned) | Form 4 ↗ |
| 2025-08-26 | 2025-08-22 | CASPER MARC N, Chairman & CEO | SSale | −3.58K | $501.65 | $1.80M | Yes (planned) | Form 4 ↗ |
| 2025-08-26 | 2025-08-22 | CASPER MARC N, Chairman & CEO | SSale | −5.82K | $500.40 | $2.91M | Yes (planned) | Form 4 ↗ |
| 2025-08-26 | 2025-08-22 | CASPER MARC N, Chairman & CEO | MExercise | +10.0K | $253.99 | $2.54M | Yes (planned) | Form 4 ↗ |
| 2025-08-21 | 2025-08-20 | CASPER MARC N Chairman & CEO | SSale | −95.00 | $500.13 | $47.5K | Yes (planned) | Form 4 ↗ |
| 2025-08-21 | 2025-08-20 | CASPER MARC N, Chairman & CEO | SSale | −200.00 | $500.00 | $100K | Yes (planned) | Form 4 ↗ |
| 2025-08-21 | 2025-08-20 | CASPER MARC N, Chairman & CEO | MExercise | +295.00 | $253.99 | $74.9K | Yes (planned) | Form 4 ↗ |
| 2025-08-21 | 2025-08-19 | CASPER MARC N, Chairman & CEO | SSale | −201.00 | $500.17 | $101K | Yes (planned) | Form 4 ↗ |
| 2025-08-21 | 2025-08-19 | CASPER MARC N, Chairman & CEO | MExercise | +201.00 | $253.99 | $51.1K | Yes (planned) | Form 4 ↗ |
| 2025-08-07 | 2025-08-07 | CASPER MARC N Chairman & CEO | SSale | −596.00 | $456.41 | $272K | Yes (planned) | Form 4 ↗ |
| 2025-08-07 | 2025-08-07 | CASPER MARC N, Chairman & CEO | SSale | −1.99K | $455.56 | $906K | Yes (planned) | Form 4 ↗ |
| 2025-08-07 | 2025-08-07 | CASPER MARC N, Chairman & CEO | SSale | −2.68K | $454.57 | $1.22M | Yes (planned) | Form 4 ↗ |
| 2025-08-07 | 2025-08-07 | CASPER MARC N, Chairman & CEO | SSale | −1.55K | $453.40 | $704K | Yes (planned) | Form 4 ↗ |
| 2025-08-07 | 2025-08-07 | CASPER MARC N, Chairman & CEO | SSale | −1.19K | $452.68 | $537K | Yes (planned) | Form 4 ↗ |
| 2025-08-07 | 2025-08-07 | CASPER MARC N, Chairman & CEO | MExercise | +8.00K | $253.99 | $2.03M | Yes (planned) | Form 4 ↗ |
| 2025-08-07 | 2025-08-06 | CASPER MARC N, Chairman & CEO | SSale | −22.00 | $464.68 | $10.2K | Yes (planned) | Form 4 ↗ |
| 2025-08-07 | 2025-08-06 | CASPER MARC N, Chairman & CEO | SSale | −96.00 | $462.32 | $44.4K | Yes (planned) | Form 4 ↗ |
| 2025-08-07 | 2025-08-06 | CASPER MARC N, Chairman & CEO | SSale | −149.00 | $461.31 | $68.7K | Yes (planned) | Form 4 ↗ |
| 2025-08-07 | 2025-08-06 | CASPER MARC N, Chairman & CEO | SSale | −16.00 | $459.25 | $7.35K | Yes (planned) | Form 4 ↗ |
| 2025-08-07 | 2025-08-06 | CASPER MARC N, Chairman & CEO | SSale | −251.00 | $458.62 | $115K | Yes (planned) | Form 4 ↗ |
| 2025-08-07 | 2025-08-06 | CASPER MARC N, Chairman & CEO | SSale | −529.00 | $456.22 | $241K | Yes (planned) | Form 4 ↗ |
| 2025-08-07 | 2025-08-06 | CASPER MARC N, Chairman & CEO | SSale | −1.35K | $455.64 | $617K | Yes (planned) | Form 4 ↗ |
| 2025-08-07 | 2025-08-06 | CASPER MARC N, Chairman & CEO | SSale | −566.00 | $454.56 | $257K | Yes (planned) | Form 4 ↗ |
| 2025-08-07 | 2025-08-06 | CASPER MARC N, Chairman & CEO | SSale | −811.00 | $453.09 | $367K | Yes (planned) | Form 4 ↗ |
| 2025-08-07 | 2025-08-06 | CASPER MARC N, Chairman & CEO | SSale | −631.00 | $452.13 | $285K | Yes (planned) | Form 4 ↗ |
| 2025-08-07 | 2025-08-06 | CASPER MARC N, Chairman & CEO | SSale | −887.00 | $451.04 | $400K | Yes (planned) | Form 4 ↗ |
| 2025-08-07 | 2025-08-06 | CASPER MARC N, Chairman & CEO | SSale | −1.74K | $449.91 | $781K | Yes (planned) | Form 4 ↗ |
| 2025-08-07 | 2025-08-06 | CASPER MARC N, Chairman & CEO | SSale | −1.15K | $448.99 | $515K | Yes (planned) | Form 4 ↗ |
| 2025-08-07 | 2025-08-06 | CASPER MARC N, Chairman & CEO | SSale | −1.26K | $447.96 | $563K | Yes (planned) | Form 4 ↗ |
| 2025-08-07 | 2025-08-06 | CASPER MARC N, Chairman & CEO | SSale | −548.00 | $446.92 | $245K | Yes (planned) | Form 4 ↗ |
| 2025-08-07 | 2025-08-06 | CASPER MARC N, Chairman & CEO | MExercise | +10.0K | $253.99 | $2.54M | Yes (planned) | Form 4 ↗ |
| 2025-07-28 | 2025-07-25 | Pettiti Gianluca Executive Vice President | SSale | −400.00 | $479.98 | $192K | Yes (planned) | Form 4 ↗ |
Insiders — a company’s officers, directors and holders of more than 10% of its stock — must report any trade in that stock to the SEC on a Form 4 within two business days. Each row here is one transaction from those filings.
The transaction code tells you what happened: Purchase (P) and Sale (S) are open-market trades — the ones markets watch most; Award (A) is a granted stock or unit, Option exercise (M) converts options into shares, and Gift (G) is a transfer for no consideration. Awards, exercises and gifts are largely compensation or administrative, not a directional bet.
One caveat on sales: many are made under a Rule 10b5-1 plan scheduled months in advance, so a sale is not automatically a bearish signal. Insider activity is a noisy input — read it alongside the filings, not on its own.
See also TMO’s full analysis or the market-wide insider trading feed. The tabs above jump to TMO’s other SEC data.
Source: SEC Form 4 filings for TMO, parsed from EDGAR. Transaction prices are as reported in the filing — SEC public-domain data, not market quotes. Values are shares × reported price where both are disclosed; grants and gifts often carry no price. A delayed record of what insiders reported, not a live position or a recommendation.
Research and education only — not financial advice. TENKis not a registered investment adviser or broker-dealer and gives no personalized advice. Every call is impersonal — identical for all users, generated on a schedule from SEC filings plus a delayed/third-party price feed — may be wrong or out of date, and is not a recommendation to buy or sell any security. The operator and an affiliated trading operation may hold or trade the securities TENK rates; see Disclosures. Past performance does not guarantee future results. Do your own research.