TMO · Insider Trading
Thermo Fisher Scientific, Inc.
Every open-market purchase and sale reported by TMO officers, directors and 10%+ beneficial owners on SEC Form 4, which must be filed within two business days of the transaction. Sales often reflect scheduled 10b5-1 plans or tax withholding rather than a directional view, so read counts alongside the size and the filer.
| Filed | Insider | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-09-29 | R. Alexandra Keith | Director | A | +46 deriv. | — |
| 2026-09-29 | Dion J Weisler | Director | A | +55 deriv. | — |
| 2026-09-29 | Scott M Sperling | Director | A | +62 deriv. | — |
| 2026-09-29 | Karen S Lynch | Director | A | +46 deriv. | — |
| 2026-09-29 | Jennifer M Johnson | Director | A | +46 deriv. | — |
| 2026-09-01 | Thomas B Shropshire Jr. | SVP and General Counsel | F | −49 | −$30.50K |
| 2026-09-01 | Michael D Shafer | Executive Vice President | F | −790 | −$491.55K |
| 2026-09-01 | James Meyer | Sr. Vice President & CFO | F | −270 | −$168.16K |
| 2026-09-01 | Lisa P. Britt | Sr. VP and Chief HR Officer | F | −393 | −$244.87K |
| 2026-09-01 | Marc N Casper | Chairman & CEO | F | −1,256 | −$781.84K |
| 2026-09-01 | Joseph R. Holmes | VP & Chief Accounting Officer | F | −49 | −$31.05K |
| 2026-09-01 | Gianluca Pettiti | President & COO | MIXED | −1,434 | −$2.03M |
| 2026-08-26 | Marc N Casper | Chairman & CEO | MIXED | — | −$87.29K |
| 2026-08-24 | James Meyer | Sr. Vice President & CFO | F | −30 | −$19.47K |
| 2026-08-24 | Marc N Casper | Chairman & CEO | MIXED | — | −$6.37M |
| 2026-08-20 | Lisa P. Britt | Sr. VP and Chief HR Officer | MIXED | — | −$2.23M |
| 2026-08-13 | Michael D Shafer | Executive Vice President | MIXED | — | −$5.85M |
| 2026-08-10 | Joseph R. Holmes | VP & Chief Accounting Officer | MIXED | — | −$115.58K |
| 2026-08-10 | Marc N Casper | Chairman & CEO | MIXED | −4,608 | −$2.78M |
| 2026-08-07 | Lisa P. Britt | Sr. VP and Chief HR Officer | MIXED | — | −$1.58M |
| 2026-08-07 | Marc N Casper | Chairman & CEO | MIXED | −5,000 | −$5.52M |
| 2026-08-07 | Marc N Casper | Chairman & CEO | MIXED | −5,000 | −$5.53M |
| 2026-08-07 | Marc N Casper | Chairman & CEO | MIXED | −5,000 | −$5.53M |
| 2026-08-07 | Lisa P. Britt | Sr. VP and Chief HR Officer | MIXED | — | −$1.58M |
| 2026-08-07 | Marc N Casper | Chairman & CEO | MIXED | −5,000 | −$5.52M |
| 2026-07-28 | Gianluca Pettiti | President & COO | Sell | −400 | −$226.00K |
| 2026-05-22 | Nelson Chai | Director | A | +499 | — |
| 2026-05-22 | Ruby R Chandy | Director | A | +499 | — |
| 2026-05-22 | C Martin Harris | Director | A | +499 | — |
| 2026-05-22 | Tyler Jacks | Director | A | +499 | — |
| 2026-05-22 | Jennifer M Johnson | Director | A | +499 | — |
| 2026-05-22 | R. Alexandra Keith | Director | A | +499 | — |
| 2026-05-22 | Karen S Lynch | Director | A | +499 | — |
| 2026-05-22 | Debora L Spar | Director | A | +499 | — |
| 2026-05-22 | Scott M Sperling | Director | A | +499 | — |
| 2026-05-22 | Dion J Weisler | Director | MIXED | +418 | −$36.27K |
| 2026-04-29 | Gianluca Pettiti | President & COO | Sell | −400 | −$185.06K |
| 2026-03-31 | Dion J Weisler | Director | A | +79 deriv. | — |
| 2026-03-31 | Jennifer M Johnson | Director | A | +66 deriv. | — |
| 2026-03-31 | Karen S Lynch | Director | A | +66 deriv. | — |
| 2026-03-31 | R. Alexandra Keith | Director | A | +66 deriv. | — |
| 2026-03-31 | Scott M Sperling | Director | A | +89 deriv. | — |
| 2026-03-12 | Michael D Shafer | Executive Vice President | Sell | −1,607 | −$802.54K |
| 2026-03-09 | Marc N Casper | Chairman & CEO | MIXED | — | −$820.74K |
| 2026-03-05 | Marc N Casper | Chairman & CEO | MIXED | — | −$1.98M |
| 2026-03-02 | Frederick M. Lowery | Executive Vice President | F | −896 | −$467.42K |
| 2026-03-02 | Michael D Shafer | Executive Vice President | F | −815 | −$425.15K |
| 2026-03-02 | Stephen Williamson | Retiring Sr. VP and CFO | F | −921 | −$480.36K |
| 2026-03-02 | Gianluca Pettiti | President & COO | F | −1,073 | −$559.35K |
| 2026-03-02 | Michel Lagarde | Executive Vice President | F | −1,196 | −$623.56K |
| Insider | Role | Shares Held | Value |
|---|---|---|---|
| Marc N Casper | Chairman & CEO | 127,668 | $86.03M |
| Michel Lagarde | Executive Vice President | 85,151 | $57.38M |
| Scott M Sperling | Director | 69,479 | $46.82M |
| Stephen Williamson | Retiring Sr. VP and CFO | 45,420 | $30.61M |
| Gianluca Pettiti | President & COO | 23,885 | $16.09M |
| Michael D Shafer | Executive Vice President | 20,620 | $13.89M |
| Nelson Chai | Director | 15,316 | $10.32M |
| Frederick M. Lowery | Executive Vice President | 15,313 | $10.32M |
| Lisa P. Britt | Sr. VP and Chief HR Officer | 14,581 | $9.83M |
| Michael A Boxer | SVP and General Counsel | 10,815 | $7.29M |
| C Martin Harris | Director | 9,532 | $6.42M |
| Tyler Jacks | Director | 9,462 | $6.38M |
| Thomas B Shropshire Jr. | SVP and General Counsel | 6,008 | $4.05M |
| James Meyer | Sr. Vice President & CFO | 5,851 | $3.94M |
| Dion J Weisler | Director | 5,446 | $3.67M |
| Ruby R Chandy | Director | 3,463 | $2.33M |
| James C Mullen | Director | 3,393 | $2.29M |
| Joseph R. Holmes | VP & Chief Accounting Officer | 2,955 | $1.99M |
| Debora L Spar | Director | 2,610 | $1.76M |
| R. Alexandra Keith | Director | 2,602 | $1.75M |
| Jennifer M Johnson | Director | 1,403 | $945.37K |
| Karen S Lynch | Director | 1,235 | $832.17K |
Form 4 reports a change in beneficial ownership by an officer, director or 10%+ holder, and must be filed within two business days of the transaction — so this is close to real time, unlike the 45-day-lagged 13F institutional data.
Transaction codes matter more than the raw buy/sell count. Code P is an open-market purchase — an insider choosing to buy with their own money, which is the signal most research treats as informative. Code S is a sale, but sales are frequently pre-scheduled under a 10b5-1 plan or cover tax withholding on vesting equity, so a run of sales often says nothing directional. Codes A and M are grants and option exercises rather than open-market decisions.
Full filing history and per-insider positions are on the TMO quote page; the site-wide leaderboard is on the insider transactions hub.
Market data may be delayed, incomplete, or inaccurate. Not a recommendation to buy, sell, or hold any security. Verify quotes with your broker before trading. See Terms §17.