THERMO FISHER SCIENTIFIC INC. (TMO): Insider Trades and Fund Holdings
In the past 12 months, THERMO FISHER SCIENTIFIC INC. insiders reported 0 open-market purchases worth $0 and 6 sales worth $37.6M; 5 of the sales were reported as made under a 10b5-1 trading plan.
Timeline: news and trades
Company filings (8-K), insider trades, notices of planned sales (Form 144) and fund moves in the past year, newest first.
- Oct 21, 2026NewsCompany reported: Quarterly or annual results
- Aug 31, 2026Insider saleCOO Gianluca Pettiti sold $2.5 million under a 10b5-1 plan
- Aug 24, 2026Insider saleCEO Marc N. Casper sold $172,438 under a 10b5-1 plan
- Aug 21, 2026Insider saleCEO Marc N. Casper sold $6.3 million under a 10b5-1 plan
- Aug 20, 2026Insider saleCEO Marc N. Casper sold $6.3 million under a 10b5-1 plan
- Aug 19, 2026Insider saleVP Lisa P. Britt sold $7 million
- Aug 11, 2026Insider salePresident Michael D. Shafer sold $15.3 million under a 10b5-1 plan
- Jun 30, 2026FundBridgewater Associates cut 11% in Q2 2026 (13F filed Aug 14, 2026)
- Jun 30, 2026FundDuquesne Family Office opened a position in Q2 2026 (13F filed Aug 14, 2026)
- Jun 30, 2026FundViking Global Investors added 16% in Q2 2026 (13F filed Aug 14, 2026)
- Jun 30, 2026FundRenaissance Technologies sold out in Q2 2026 (13F filed Aug 13, 2026)
- Jun 30, 2026FundMarkel Group added 9% in Q2 2026 (13F filed Jul 31, 2026)
Recent insider trades
Open-market purchases (code P) and sales (code S) from Form 4. Grants, option exercises and gifts are not shown. Latest filing: Sep 1, 2026.
| Filed | Insider | Type | Value |
|---|---|---|---|
| Sep 1 | Gianluca PettitiCOO | ▼ SELL10b5-1 | $2.54M |
| Aug 26 | Marc N. CasperCEO | ▼ SELL10b5-1 | $172K |
| Aug 24 | Marc N. CasperCEO | ▼ SELL10b5-1 | $6.29M |
| Aug 24 | Marc N. CasperCEO | ▼ SELL10b5-1 | $6.27M |
| Aug 20 | Lisa P. BrittVP | ▼ SELL | $7.01M |
| Aug 13 | Michael D. ShaferPresident | ▼ SELL10b5-1 | $15.3M |
Insiders who traded in the past year
| Insider | Role | Buys | Bought | Sells | Sold |
|---|---|---|---|---|---|
| Gianluca Pettiti | COO | 0 | $0 | 1 | $2.54M |
| Marc N. Casper | CEO | 0 | $0 | 3 | $12.7M |
| Lisa P. Britt | VP | 0 | $0 | 1 | $7.01M |
| Michael D. Shafer | President | 0 | $0 | 1 | $15.3M |
Buybacks and executive pay
THERMO FISHER SCIENTIFIC INC. spent $3 billion buying back its own shares in 2025.
| Year | CEO pay reported | CEO pay "actually paid" | Value of $100 invested |
|---|---|---|---|
| 2025 | $79.9M | $116.1M | n/a |
| 2024 | $30.4M | $29.6M | n/a |
| 2023 | $19.0M | $9.23M | n/a |
From the company's XBRL data filed with the SEC. "Actually paid" is the SEC's pay-versus-performance measure, which counts changes in the value of stock awards. "Value of $100 invested" is the company's cumulative shareholder return as reported, usually measured from five years earlier. See all buybacks and CEO pay across companies.
Tracked funds that report TMO
From each fund's latest 13F. Holdings are as of quarter end and are filed up to 45 days later.
| Fund | Shares | Value | Change |
|---|---|---|---|
| Viking Global Investors | 1,937,415 | $971.3M | ▲ +16.2% |
| Markel Group | 73,100 | $36.6M | ▲ +8.9% |
| Bridgewater Associates | 12,948 | $6.49M | ▼ −10.6% |
| Duquesne Family Office | 19,200 | $10K | ▲ New |
| Renaissance Technologies | 0 | $0 | ▼ Sold out |
Reading these numbers
Insiders sell for many reasons: taxes, diversification, a house. Purchases with their own money are rarer and are usually read as more informative. A Form 4 is due within two business days of the trade. How to read a Form 4 →