Thermo Fisher Scientific (TMO) — insider trading
Health Care · NYSE
Thermo Fisher Scientific (TMO) has 164 reported SEC Form 4 insider transactions in our data, including 51 open-market sales among the most recent 100 (latest 2026-09-26).
Recent Form 4 transactions
Showing the 100 most recent of 164 recorded transactions. See all on SEC EDGAR →
| Date | Insider | Role | Type | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|---|
| 2026-09-26 | WEISLER DION J | Director | Grant / award / vesting (derivative) | 56 | — | — | Form 4 |
| 2026-09-26 | SPERLING SCOTT M | Director | Grant / award / vesting (derivative) | 63 | — | — | Form 4 |
| 2026-09-26 | Lynch Karen S | Director | Grant / award / vesting (derivative) | 46 | — | — | Form 4 |
| 2026-09-26 | Keith R. Alexandra | Director | Grant / award / vesting (derivative) | 46 | — | — | Form 4 |
| 2026-09-26 | JOHNSON JENNIFER M | Director | Grant / award / vesting (derivative) | 46 | — | — | Form 4 |
| 2026-08-31 | Pettiti Gianluca | Officer (President & COO) | Option exercise / conversion (derivative) | 3,733 | — | $0 | Form 4 |
| 2026-08-31 | Pettiti Gianluca | Officer (President & COO) | Open-market sale | 3,733 | $614.38 | $2.29M | Form 4 |
| 2026-08-31 | Pettiti Gianluca | Officer (President & COO) | Option exercise / conversion | 3,733 | $309.63 | $1.16M | Form 4 |
| 2026-08-31 | Pettiti Gianluca | Officer (President & COO) | Open-market sale | 400 | $614.38 | $245.8K | Form 4 |
| 2026-08-28 | Shropshire Thomas B Jr. | Officer (SVP and General Counsel) | Shares withheld for taxes / exercise cost | 49 | $622.18 | $30.5K | Form 4 |
| 2026-08-28 | Shafer Michael D | Officer (Executive Vice President) | Shares withheld for taxes / exercise cost | 227 | $622.18 | $141.4K | Form 4 |
| 2026-08-28 | Shafer Michael D | Officer (Executive Vice President) | Shares withheld for taxes / exercise cost | 190 | $622.18 | $117.9K | Form 4 |
| 2026-08-28 | Shafer Michael D | Officer (Executive Vice President) | Shares withheld for taxes / exercise cost | 211 | $622.18 | $131.2K | Form 4 |
| 2026-08-28 | Shafer Michael D | Officer (Executive Vice President) | Shares withheld for taxes / exercise cost | 162 | $622.18 | $101.1K | Form 4 |
| 2026-08-28 | Pettiti Gianluca | Officer (President & COO) | Shares withheld for taxes / exercise cost | 270 | $622.18 | $167.9K | Form 4 |
| 2026-08-28 | Pettiti Gianluca | Officer (President & COO) | Shares withheld for taxes / exercise cost | 249 | $622.18 | $154.9K | Form 4 |
| 2026-08-28 | Pettiti Gianluca | Officer (President & COO) | Shares withheld for taxes / exercise cost | 304 | $622.18 | $188.9K | Form 4 |
| 2026-08-28 | Pettiti Gianluca | Officer (President & COO) | Shares withheld for taxes / exercise cost | 212 | $622.18 | $132.1K | Form 4 |
| 2026-08-28 | Meyer James | Officer (Sr. Vice President & CFO) | Shares withheld for taxes / exercise cost | 114 | $622.18 | $70.7K | Form 4 |
| 2026-08-28 | Meyer James | Officer (Sr. Vice President & CFO) | Shares withheld for taxes / exercise cost | 55 | $622.18 | $34.3K | Form 4 |
| 2026-08-28 | Meyer James | Officer (Sr. Vice President & CFO) | Shares withheld for taxes / exercise cost | 20 | $622.18 | $12.3K | Form 4 |
| 2026-08-28 | Meyer James | Officer (Sr. Vice President & CFO) | Shares withheld for taxes / exercise cost | 44 | $622.18 | $27.7K | Form 4 |
| 2026-08-28 | Meyer James | Officer (Sr. Vice President & CFO) | Shares withheld for taxes / exercise cost | 37 | $622.18 | $23.2K | Form 4 |
| 2026-08-28 | Holmes Joseph R. | Officer (VP & Chief Accounting Officer) | Shares withheld for taxes / exercise cost | 15 | $622.18 | $9.3K | Form 4 |
| 2026-08-28 | Holmes Joseph R. | Officer (VP & Chief Accounting Officer) | Shares withheld for taxes / exercise cost | 11 | $622.18 | $7.1K | Form 4 |
| 2026-08-28 | Holmes Joseph R. | Officer (VP & Chief Accounting Officer) | Shares withheld for taxes / exercise cost | 13 | $622.18 | $8.0K | Form 4 |
| 2026-08-28 | Holmes Joseph R. | Officer (VP & Chief Accounting Officer) | Shares withheld for taxes / exercise cost | 11 | $622.18 | $6.6K | Form 4 |
| 2026-08-28 | CASPER MARC N | Director, Officer (Chairman & CEO) | Shares withheld for taxes / exercise cost | 532 | $622.18 | $330.9K | Form 4 |
| 2026-08-28 | CASPER MARC N | Director, Officer (Chairman & CEO) | Shares withheld for taxes / exercise cost | 725 | $622.18 | $450.9K | Form 4 |
| 2026-08-28 | Britt Lisa P. | Officer (Sr. VP and Chief HR Officer) | Shares withheld for taxes / exercise cost | 85 | $622.18 | $52.9K | Form 4 |
| 2026-08-28 | Britt Lisa P. | Officer (Sr. VP and Chief HR Officer) | Shares withheld for taxes / exercise cost | 105 | $622.18 | $65.6K | Form 4 |
| 2026-08-28 | Britt Lisa P. | Officer (Sr. VP and Chief HR Officer) | Shares withheld for taxes / exercise cost | 116 | $622.18 | $72.2K | Form 4 |
| 2026-08-28 | Britt Lisa P. | Officer (Sr. VP and Chief HR Officer) | Shares withheld for taxes / exercise cost | 87 | $622.18 | $54.1K | Form 4 |
| 2026-08-24 | CASPER MARC N | Director, Officer (Chairman & CEO) | Option exercise / conversion (derivative) | 275 | — | $0 | Form 4 |
| 2026-08-24 | CASPER MARC N | Director, Officer (Chairman & CEO) | Open-market sale | 62 | $628.74 | $39.0K | Form 4 |
| 2026-08-24 | CASPER MARC N | Director, Officer (Chairman & CEO) | Open-market sale | 79 | $628.01 | $49.6K | Form 4 |
| 2026-08-24 | CASPER MARC N | Director, Officer (Chairman & CEO) | Open-market sale | 33 | $626.59 | $20.7K | Form 4 |
| 2026-08-24 | CASPER MARC N | Director, Officer (Chairman & CEO) | Open-market sale | 101 | $625.41 | $63.2K | Form 4 |
| 2026-08-24 | CASPER MARC N | Director, Officer (Chairman & CEO) | Option exercise / conversion | 275 | $309.63 | $85.1K | Form 4 |
| 2026-08-22 | Meyer James | Officer (Sr. Vice President & CFO) | Shares withheld for taxes / exercise cost | 31 | $629.27 | $19.5K | Form 4 |
| 2026-08-21 | CASPER MARC N | Director, Officer (Chairman & CEO) | Option exercise / conversion (derivative) | 10,000 | — | $0 | Form 4 |
| 2026-08-21 | CASPER MARC N | Director, Officer (Chairman & CEO) | Open-market sale | 321 | $629.10 | $201.9K | Form 4 |
| 2026-08-21 | CASPER MARC N | Director, Officer (Chairman & CEO) | Open-market sale | 2,147 | $628.61 | $1.35M | Form 4 |
| 2026-08-21 | CASPER MARC N | Director, Officer (Chairman & CEO) | Open-market sale | 1,791 | $627.39 | $1.12M | Form 4 |
| 2026-08-21 | CASPER MARC N | Director, Officer (Chairman & CEO) | Open-market sale | 3,014 | $626.51 | $1.89M | Form 4 |
| 2026-08-21 | CASPER MARC N | Director, Officer (Chairman & CEO) | Open-market sale | 2,727 | $625.46 | $1.71M | Form 4 |
| 2026-08-21 | CASPER MARC N | Director, Officer (Chairman & CEO) | Option exercise / conversion | 10,000 | $309.63 | $3.10M | Form 4 |
| 2026-08-20 | CASPER MARC N | Director, Officer (Chairman & CEO) | Option exercise / conversion (derivative) | 10,000 | — | $0 | Form 4 |
| 2026-08-20 | CASPER MARC N | Director, Officer (Chairman & CEO) | Open-market sale | 80 | $633.99 | $50.7K | Form 4 |
| 2026-08-20 | CASPER MARC N | Director, Officer (Chairman & CEO) | Open-market sale | 560 | $632.94 | $354.4K | Form 4 |
| 2026-08-20 | CASPER MARC N | Director, Officer (Chairman & CEO) | Open-market sale | 1,430 | $632.01 | $903.8K | Form 4 |
| 2026-08-20 | CASPER MARC N | Director, Officer (Chairman & CEO) | Open-market sale | 1,035 | $630.87 | $653.0K | Form 4 |
| 2026-08-20 | CASPER MARC N | Director, Officer (Chairman & CEO) | Open-market sale | 1,250 | $629.85 | $787.3K | Form 4 |
| 2026-08-20 | CASPER MARC N | Director, Officer (Chairman & CEO) | Open-market sale | 2,601 | $628.82 | $1.64M | Form 4 |
| 2026-08-20 | CASPER MARC N | Director, Officer (Chairman & CEO) | Open-market sale | 1,314 | $627.66 | $824.7K | Form 4 |
| 2026-08-20 | CASPER MARC N | Director, Officer (Chairman & CEO) | Open-market sale | 821 | $626.83 | $514.6K | Form 4 |
| 2026-08-20 | CASPER MARC N | Director, Officer (Chairman & CEO) | Open-market sale | 909 | $625.45 | $568.5K | Form 4 |
| 2026-08-20 | CASPER MARC N | Director, Officer (Chairman & CEO) | Option exercise / conversion | 10,000 | $309.63 | $3.10M | Form 4 |
| 2026-08-19 | Britt Lisa P. | Officer (Sr. VP and Chief HR Officer) | Option exercise / conversion (derivative) | 11,440 | — | $0 | Form 4 |
| 2026-08-19 | Britt Lisa P. | Officer (Sr. VP and Chief HR Officer) | Open-market sale | 11,440 | $613.12 | $7.01M | Form 4 |
| 2026-08-19 | Britt Lisa P. | Officer (Sr. VP and Chief HR Officer) | Option exercise / conversion | 11,440 | $418.32 | $4.79M | Form 4 |
| 2026-08-11 | Shafer Michael D | Officer (Executive Vice President) | Option exercise / conversion (derivative) | 14,300 | — | $0 | Form 4 |
| 2026-08-11 | Shafer Michael D | Officer (Executive Vice President) | Option exercise / conversion (derivative) | 11,200 | — | $0 | Form 4 |
| 2026-08-11 | Shafer Michael D | Officer (Executive Vice President) | Open-market sale | 14,300 | $600.00 | $8.58M | Form 4 |
| 2026-08-11 | Shafer Michael D | Officer (Executive Vice President) | Option exercise / conversion | 14,300 | $418.32 | $5.98M | Form 4 |
| 2026-08-11 | Shafer Michael D | Officer (Executive Vice President) | Open-market sale | 11,200 | $600.00 | $6.72M | Form 4 |
| 2026-08-11 | Shafer Michael D | Officer (Executive Vice President) | Option exercise / conversion | 11,200 | $309.63 | $3.47M | Form 4 |
| 2026-08-07 | CASPER MARC N | Director, Officer (Chairman & CEO) | Option exercise / conversion (derivative) | 275 | — | $0 | Form 4 |
| 2026-08-07 | CASPER MARC N | Director, Officer (Chairman & CEO) | Open-market sale | 117 | $593.31 | $69.4K | Form 4 |
| 2026-08-07 | CASPER MARC N | Director, Officer (Chairman & CEO) | Open-market sale | 495 | $590.78 | $292.4K | Form 4 |
| 2026-08-07 | CASPER MARC N | Director, Officer (Chairman & CEO) | Open-market sale | 522 | $589.52 | $307.7K | Form 4 |
| 2026-08-07 | CASPER MARC N | Director, Officer (Chairman & CEO) | Open-market sale | 228 | $587.64 | $134.0K | Form 4 |
| 2026-08-07 | CASPER MARC N | Director, Officer (Chairman & CEO) | Open-market sale | 945 | $586.52 | $554.3K | Form 4 |
| 2026-08-07 | CASPER MARC N | Director, Officer (Chairman & CEO) | Open-market sale | 530 | $585.44 | $310.3K | Form 4 |
| 2026-08-07 | CASPER MARC N | Director, Officer (Chairman & CEO) | Open-market sale | 1,035 | $584.41 | $604.9K | Form 4 |
| 2026-08-07 | CASPER MARC N | Director, Officer (Chairman & CEO) | Open-market sale | 302 | $583.35 | $176.2K | Form 4 |
| 2026-08-07 | CASPER MARC N | Director, Officer (Chairman & CEO) | Open-market sale | 113 | $581.85 | $65.7K | Form 4 |
| 2026-08-07 | CASPER MARC N | Director, Officer (Chairman & CEO) | Open-market sale | 113 | $580.71 | $65.6K | Form 4 |
| 2026-08-07 | CASPER MARC N | Director, Officer (Chairman & CEO) | Open-market sale | 114 | $579.26 | $66.0K | Form 4 |
| 2026-08-07 | CASPER MARC N | Director, Officer (Chairman & CEO) | Open-market sale | 94 | $577.37 | $54.3K | Form 4 |
| 2026-08-07 | CASPER MARC N | Director, Officer (Chairman & CEO) | Open-market sale | 7 | $593.32 | $4.2K | Form 4 |
| 2026-08-07 | CASPER MARC N | Director, Officer (Chairman & CEO) | Open-market sale | 29 | $590.77 | $17.1K | Form 4 |
| 2026-08-07 | CASPER MARC N | Director, Officer (Chairman & CEO) | Open-market sale | 32 | $589.51 | $18.9K | Form 4 |
| 2026-08-07 | CASPER MARC N | Director, Officer (Chairman & CEO) | Open-market sale | 12 | $587.64 | $7.1K | Form 4 |
| 2026-08-07 | CASPER MARC N | Director, Officer (Chairman & CEO) | Open-market sale | 58 | $586.53 | $34.0K | Form 4 |
| 2026-08-07 | CASPER MARC N | Director, Officer (Chairman & CEO) | Open-market sale | 30 | $585.42 | $17.6K | Form 4 |
| 2026-08-07 | CASPER MARC N | Director, Officer (Chairman & CEO) | Open-market sale | 63 | $584.40 | $36.8K | Form 4 |
| 2026-08-07 | CASPER MARC N | Director, Officer (Chairman & CEO) | Open-market sale | 18 | $583.37 | $10.5K | Form 4 |
| 2026-08-07 | CASPER MARC N | Director, Officer (Chairman & CEO) | Open-market sale | 2 | $581.86 | $1.2K | Form 4 |
| 2026-08-07 | CASPER MARC N | Director, Officer (Chairman & CEO) | Open-market sale | 5 | $581.85 | $2.9K | Form 4 |
| 2026-08-07 | CASPER MARC N | Director, Officer (Chairman & CEO) | Open-market sale | 3 | $580.72 | $1.7K | Form 4 |
| 2026-08-07 | CASPER MARC N | Director, Officer (Chairman & CEO) | Open-market sale | 4 | $580.71 | $2.3K | Form 4 |
| 2026-08-07 | CASPER MARC N | Director, Officer (Chairman & CEO) | Open-market sale | 2 | $579.27 | $1.2K | Form 4 |
| 2026-08-07 | CASPER MARC N | Director, Officer (Chairman & CEO) | Open-market sale | 4 | $579.26 | $2.3K | Form 4 |
| 2026-08-07 | CASPER MARC N | Director, Officer (Chairman & CEO) | Open-market sale | 6 | $577.37 | $3.5K | Form 4 |
| 2026-08-07 | CASPER MARC N | Director, Officer (Chairman & CEO) | Option exercise / conversion | 275 | $309.63 | $85.1K | Form 4 |
| 2026-08-07 | Holmes Joseph R. | Officer (VP & Chief Accounting Officer) | Option exercise / conversion (derivative) | 420 | — | $0 | Form 4 |
| 2026-08-07 | Holmes Joseph R. | Officer (VP & Chief Accounting Officer) | Open-market sale | 420 | $584.81 | $245.6K | Form 4 |
| 2026-08-07 | Holmes Joseph R. | Officer (VP & Chief Accounting Officer) | Option exercise / conversion | 420 | $309.63 | $130.0K | Form 4 |
| 2026-08-06 | CASPER MARC N | Director, Officer (Chairman & CEO) | Option exercise / conversion (derivative) | 10,000 | — | $0 | Form 4 |
Ask the chat about TMO's insider activity →
Transaction types are the SEC Form 4 codes: open-market purchases (P) and sales (S) are the only rows that reflect open-market conviction. Awards/vesting (A), option exercises (M/X/C), shares withheld for taxes (F) and gifts (G) are compensation or mechanical, not buying or selling on the open market. Sales may be planned and non-discretionary (e.g. a Rule 10b5-1 plan); open-market buying is not a recommendation to buy. Informational only — not financial advice.
Source: SEC EDGAR Form 3/4/5. See the full company profile: Thermo Fisher Scientific (TMO).
Last updated 2026-09-26 (most recent filing date).
Informational only — NOT financial advice. Insider filings are sourced from SEC EDGAR and shown with their reported dates.