Thermo Fisher Scientific Inc. (TMO) Insider Trading
Over the last 3 months, TMO insiders made 0 open-market buys and 86 sales, a net sale of -$52.0M (SEC Form 4). Over the last 6 months, 1901 institutions increased and 2275 reduced their position (13F).
Insider Activity
Sentiment
0/100
Buys (3m)
0
Sells (3m)
86
Net (3m)
-$52.0M
Insider trades by month Buys Sells
Dec
Feb
Mar
Apr
Jul
Aug
Context3-month price +25.7%Institutions mixed (13F)
| Date | Insider | Type | Shares | Price |
|---|---|---|---|---|
| Aug 26, 2026 | CASPER MARC Ndirector, officer: Chairman & CEO | Sell | 101 | $625.41 |
| Aug 26, 2026 | CASPER MARC Ndirector, officer: Chairman & CEO | Option | 275 | $309.63 |
| Aug 26, 2026 | CASPER MARC Ndirector, officer: Chairman & CEO | Sell | 33 | $626.59 |
| Aug 26, 2026 | CASPER MARC Ndirector, officer: Chairman & CEO | Sell | 79 | $628.01 |
| Aug 26, 2026 | CASPER MARC Ndirector, officer: Chairman & CEO | Sell | 62 | $628.74 |
| Aug 24, 2026 | CASPER MARC Ndirector, officer: Chairman & CEO | Sell | 2,727 | $625.46 |
| Aug 24, 2026 | CASPER MARC Ndirector, officer: Chairman & CEO | Sell | 821 | $626.83 |
| Aug 24, 2026 | CASPER MARC Ndirector, officer: Chairman & CEO | Sell | 321 | $629.10 |
| Aug 24, 2026 | CASPER MARC Ndirector, officer: Chairman & CEO | Option | 10,000 | $309.63 |
| Aug 24, 2026 | CASPER MARC Ndirector, officer: Chairman & CEO | Sell | 3,014 | $626.51 |
| Aug 24, 2026 | CASPER MARC Ndirector, officer: Chairman & CEO | Sell | 560 | $632.94 |
| Aug 24, 2026 | CASPER MARC Ndirector, officer: Chairman & CEO | Sell | 2,601 | $628.82 |
| Aug 24, 2026 | CASPER MARC Ndirector, officer: Chairman & CEO | Sell | 80 | $633.99 |
| Aug 24, 2026 | CASPER MARC Ndirector, officer: Chairman & CEO | Sell | 1,791 | $627.39 |
| Aug 24, 2026 | CASPER MARC Ndirector, officer: Chairman & CEO | Sell | 2,147 | $628.61 |
| Aug 24, 2026 | Meyer Jamesofficer: Sr. Vice President & CFO | Tax | 31 | $629.27 |
| Aug 24, 2026 | CASPER MARC Ndirector, officer: Chairman & CEO | Sell | 1,314 | $627.66 |
| Aug 24, 2026 | CASPER MARC Ndirector, officer: Chairman & CEO | Sell | 1,035 | $630.87 |
| Aug 24, 2026 | CASPER MARC Ndirector, officer: Chairman & CEO | Sell | 1,430 | $632.01 |
| Aug 24, 2026 | CASPER MARC Ndirector, officer: Chairman & CEO | Sell | 909 | $625.45 |
| Aug 24, 2026 | CASPER MARC Ndirector, officer: Chairman & CEO | Sell | 1,250 | $629.85 |
| Aug 20, 2026 | Britt Lisa P.officer: Sr. VP and Chief HR Officer | Option | 11,440 | $418.32 |
| Aug 20, 2026 | Britt Lisa P.officer: Sr. VP and Chief HR Officer | Sell | 11,440 | $613.12 |
| Aug 13, 2026 | Shafer Michael Dofficer: Executive Vice President | Option | 14,300 | $418.32 |
| Aug 13, 2026 | Shafer Michael Dofficer: Executive Vice President | Option | 11,200 | $309.63 |
| Aug 13, 2026 | Shafer Michael Dofficer: Executive Vice President | Sell | 14,300 | $600.00 |
| Aug 10, 2026 | CASPER MARC Ndirector, officer: Chairman & CEO | Sell | 114 | $579.26 |
| Aug 10, 2026 | CASPER MARC Ndirector, officer: Chairman & CEO | Option | 275 | $309.63 |
| Aug 10, 2026 | CASPER MARC Ndirector, officer: Chairman & CEO | Sell | 228 | $587.64 |
| Aug 10, 2026 | CASPER MARC Ndirector, officer: Chairman & CEO | Sell | 4 | $579.26 |
Source: TMO SEC Form 4 filings, latest Aug 26, 2026. For informational purposes only — not investment advice.
Institutional activity (13F)
How institutions changed their TMO positions over the last 6 months (SEC Form 13F).
Increased
1901
New positions
376
Reduced
2275
Sold out
162
Largest moves
| Institution | Action | Shares | Filed |
|---|---|---|---|
| BlackRock, Inc. | Increased | 30.9M | Aug 7, 2026 |
| BLACKROCK, INC. | Reduced | 30.5M | May 13, 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC | New Position | 24.3M | May 15, 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC | Reduced | 24.3M | Aug 13, 2026 |
| STATE STREET CORP | Increased | 16.8M | Aug 7, 2026 |
| STATE STREET CORP | Increased | 16.7M | May 15, 2026 |
| FMR LLC | Increased | 14.1M | Aug 13, 2026 |
| MORGAN STANLEY | Reduced | 10.9M | May 15, 2026 |
| FMR LLC | Increased | 10.8M | May 15, 2026 |
| MORGAN STANLEY | Reduced | 10.8M | Aug 13, 2026 |
| JPMORGAN CHASE & CO | Increased | 8.5M | Aug 12, 2026 |
| GEODE CAPITAL MANAGEMENT, LLC | Increased | 8.4M | May 15, 2026 |
| GEODE CAPITAL MANAGEMENT, LLC | Reduced | 8.4M | Aug 12, 2026 |
| FRANKLIN RESOURCES INC | Increased | 7.3M | Aug 13, 2026 |
| FRANKLIN RESOURCES INC | Increased | 6.8M | May 13, 2026 |
Source: SEC Form 13F filings. For informational purposes only — not investment advice.