TMO
Thermo Fisher Scientific Inc
658.30$
+1.5%
vs. previous close
Closing price · As of: Sep 17, 2026
Ownership
Ownership Structure
Who owns Thermo Fisher Scientific Inc (TMO)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 99.8% of the shares are freely tradable; institutional investors hold 94.2%.
Institutional ownership
?Share of the stock held by institutional investors (funds, banks, insurers) according to regulatory filings.
94.2%
Insiders
?Share of the stock held by the executives, founders and major shareholders of the company itself.
0.2%
Float
?Share of stock freely tradable on the market — not locked up in the hands of founders, insiders, or major shareholders.
99.8%
Short % of float
?Shares sold short as a percentage of the freely tradable float — high values signal many bets on falling prices.
1.5%
Shares Outstanding
?Total number of shares issued. Price times share count gives market cap.
370Mio.
Largest Shareholders
Institutions
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| BlackRock Inc | 8.23 | 30,427,192 | -0.8 | 03/31/2026 |
| Vanguard Capital Management, LLC | 6.57 | 24,280,816 | +0.0 | 03/31/2026 |
| State Street Corp | 4.53 | 16,731,668 | +0.7 | 03/31/2026 |
| CI Private Wealth LLC | 4.38 | 16,191,744 | +1,846.0 | 06/30/2026 |
| Morgan Stanley - Brokerage Accounts | 2.94 | 10,863,528 | -8.7 | 03/31/2026 |
| FMR Inc | 2.91 | 10,776,436 | +10.0 | 03/31/2026 |
| Geode Capital Management, LLC | 2.27 | 8,407,891 | +2.6 | 03/31/2026 |
| Franklin Templeton Inc | 1.84 | 6,813,031 | +7.4 | 03/31/2026 |
Funds
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| Vanguard MStar Total Stk Mkt Idx Invest | 3.20 | 11,833,455 | +0.3 | 07/31/2026 |
| Vanguard 500 Index Investor | 2.64 | 9,754,245 | +1.1 | 07/31/2026 |
Largest reported positions according to regulatory filings; stake as a percentage of shares outstanding, change versus the previous filing. Source: fundamentals data.
Insider holdings
| Person | Role | Shares | Value | As of | Type |
|---|---|---|---|---|---|
| Casper Marc N | Chairman & CEO | 122,669 | 80,752,832 $ | Aug 7, 2026 | both |
| Pettiti Gianluca | President & COO | 23,216 | 15,283,185 $ | Aug 31, 2026 | direct |
| Shafer Michael D | Executive Vice President | 20,204 | 13,300,288 $ | Aug 28, 2026 | direct |
| Britt Lisa P. | Sr. VP and Chief HR Officer | 14,391 | 9,473,318 $ | Aug 28, 2026 | direct |
| Shropshire Thomas B Jr. | SVP and General Counsel | 6,009 | 3,955,396 $ | Aug 28, 2026 | direct |
| Meyer James | Sr. Vice President & CFO | 5,560 | 3,659,989 $ | Aug 28, 2026 | direct |
| Holmes Joseph R. | VP & Chief Accounting Officer | 2,916 | 1,919,903 $ | Aug 28, 2026 | direct |
Holdings as of each person's most recent SEC Form 4 filing — excluding options and RSUs, which are not shares yet. Holdings may have changed between two filings.
Insiders
Insider Transactions
| Date | Person | Role | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Aug 31, 2026 | Pettiti Gianluca | President & COO | Sell | 3,733 | 614.38 | 2,293,481 |
| Aug 31, 2026 | Pettiti Gianluca | President & COO | Other | 3,733 | 309.63 | 1,155,849 |
| Aug 31, 2026 | Pettiti Gianluca | President & COO | Sell | 400 | 614.38 | 245,752 |
| Aug 28, 2026 | Casper Marc N | Chairman & CEO | Other | 532 | 622.18 | 331,000 |
| Aug 28, 2026 | Casper Marc N | Chairman & CEO | Other | 725 | 622.18 | 451,081 |
| Aug 28, 2026 | Meyer James | Sr. Vice President & CFO | Other | 114 | 622.18 | 70,929 |
| Aug 28, 2026 | Meyer James | Sr. Vice President & CFO | Other | 55 | 622.18 | 34,220 |
| Aug 28, 2026 | Meyer James | Sr. Vice President & CFO | Other | 20 | 622.18 | 12,444 |
| Aug 28, 2026 | Meyer James | Sr. Vice President & CFO | Other | 44 | 622.18 | 27,376 |
| Aug 28, 2026 | Meyer James | Sr. Vice President & CFO | Other | 37 | 622.18 | 23,021 |
| Aug 28, 2026 | Shropshire Thomas B Jr. | SVP and General Counsel | Other | 49 | 622.18 | 30,487 |
| Aug 28, 2026 | Shafer Michael D | Executive Vice President | Other | 227 | 622.18 | 141,235 |
| Aug 28, 2026 | Shafer Michael D | Executive Vice President | Other | 190 | 622.18 | 118,214 |
| Aug 28, 2026 | Shafer Michael D | Executive Vice President | Other | 211 | 622.18 | 131,280 |
| Aug 28, 2026 | Shafer Michael D | Executive Vice President | Other | 162 | 622.18 | 100,793 |
| Aug 28, 2026 | Holmes Joseph R. | VP & Chief Accounting Officer | Other | 15 | 622.18 | 9,333 |
| Aug 28, 2026 | Holmes Joseph R. | VP & Chief Accounting Officer | Other | 13 | 622.18 | 8,088 |
| Aug 28, 2026 | Holmes Joseph R. | VP & Chief Accounting Officer | Other | 11 | 622.18 | 6,844 |
| Aug 28, 2026 | Pettiti Gianluca | President & COO | Other | 270 | 622.18 | 167,989 |
| Aug 28, 2026 | Pettiti Gianluca | President & COO | Other | 249 | 622.18 | 154,923 |
| Aug 28, 2026 | Pettiti Gianluca | President & COO | Other | 304 | 622.18 | 189,143 |
| Aug 28, 2026 | Pettiti Gianluca | President & COO | Other | 212 | 622.18 | 131,902 |
| Aug 28, 2026 | Britt Lisa P. | Sr. VP and Chief HR Officer | Other | 85 | 622.18 | 52,885 |
| Aug 28, 2026 | Britt Lisa P. | Sr. VP and Chief HR Officer | Other | 105 | 622.18 | 65,329 |
| Aug 28, 2026 | Britt Lisa P. | Sr. VP and Chief HR Officer | Other | 116 | 622.18 | 72,173 |
| Aug 28, 2026 | Britt Lisa P. | Sr. VP and Chief HR Officer | Other | 87 | 622.18 | 54,130 |
| Aug 24, 2026 | Casper Marc N | Chairman & CEO | Sell | 62 | 628.74 | 38,982 |
| Aug 24, 2026 | Casper Marc N | Chairman & CEO | Sell | 79 | 628.01 | 49,613 |
| Aug 24, 2026 | Casper Marc N | Chairman & CEO | Sell | 33 | 626.59 | 20,677 |
| Aug 24, 2026 | Casper Marc N | Chairman & CEO | Sell | 101 | 625.41 | 63,166 |
| Aug 24, 2026 | Casper Marc N | Chairman & CEO | Other | 275 | 309.63 | 85,148 |
| Aug 22, 2026 | Meyer James | Sr. Vice President & CFO | Other | 31 | 629.27 | 19,507 |
| Aug 21, 2026 | Casper Marc N | Chairman & CEO | Sell | 321 | 629.10 | 201,941 |
| Aug 21, 2026 | Casper Marc N | Chairman & CEO | Sell | 2,147 | 628.61 | 1,349,626 |
| Aug 21, 2026 | Casper Marc N | Chairman & CEO | Sell | 1,791 | 627.39 | 1,123,655 |
| Aug 21, 2026 | Casper Marc N | Chairman & CEO | Sell | 3,014 | 626.51 | 1,888,301 |
| Aug 21, 2026 | Casper Marc N | Chairman & CEO | Sell | 2,727 | 625.46 | 1,705,629 |
| Aug 21, 2026 | Casper Marc N | Chairman & CEO | Other | 10,000 | 309.63 | 3,096,300 |
| Aug 20, 2026 | Casper Marc N | Chairman & CEO | Sell | 80 | 633.99 | 50,719 |
| Aug 20, 2026 | Casper Marc N | Chairman & CEO | Sell | 560 | 632.94 | 354,446 |
| Aug 20, 2026 | Casper Marc N | Chairman & CEO | Sell | 1,430 | 632.01 | 903,774 |
| Aug 20, 2026 | Casper Marc N | Chairman & CEO | Sell | 1,035 | 630.87 | 652,950 |
| Aug 20, 2026 | Casper Marc N | Chairman & CEO | Sell | 1,250 | 629.85 | 787,313 |
| Aug 20, 2026 | Casper Marc N | Chairman & CEO | Sell | 2,601 | 628.82 | 1,635,561 |
| Aug 20, 2026 | Casper Marc N | Chairman & CEO | Sell | 1,314 | 627.66 | 824,745 |
| Aug 20, 2026 | Casper Marc N | Chairman & CEO | Sell | 821 | 626.83 | 514,627 |
| Aug 20, 2026 | Casper Marc N | Chairman & CEO | Sell | 909 | 625.45 | 568,534 |
| Aug 20, 2026 | Casper Marc N | Chairman & CEO | Other | 10,000 | 309.63 | 3,096,300 |
| Aug 19, 2026 | Britt Lisa P. | Sr. VP and Chief HR Officer | Sell | 11,440 | 613.12 | 7,014,093 |
| Aug 19, 2026 | Britt Lisa P. | Sr. VP and Chief HR Officer | Other | 11,440 | 418.32 | 4,785,581 |
Reportable transactions by officers and major shareholders from SEC Form 4 filings. "Other" includes things like stock grants and option exercises without a buy/sell character. View all insider transactions →
Data as of: September 17, 2026 · Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q)
Note: pure fact-based analysis, not investment advice and not a solicitation to buy or sell. All figures without guarantee.