Thermo Fisher Scientific Stock Insider Power

Based on the 100 latest insides trades, we have calculated the insider power to be negative at -21.38. In total, the insiders bought 8.71M and sold 26.14M TMO shares in the last 100 trades. The insider score can be negative despite buy/sell ratio being positive. The score focuses on the quality of the trades.

Insider Power

(Last 100 transactions)
-21.38
Buy 8.71M shares
Sell 26.14M shares
44% Buy Activity
Moderate Negative Correlation
Buy Signal Low Confidence
Mar 02, 2026

Analysis Breakdown:

  • Signal is highly questionable due to a strongly contradictory negative Insider Power Score of -21.38.
  • Confidence increased due to high data reliability score of 100.

Historical Insider Trades

Date Type Person Role Amount
Mar 05, 2026
Sell
Common Stock
S-Sale
Casper Marc N
Chairman & CEO
CEO / President 58
Value: $29.4K
Mar 05, 2026
Sell
Common Stock
S-Sale
Casper Marc N
Chairman & CEO
CEO / President 60
Value: $30.3K
Mar 05, 2026
Sell
Common Stock
S-Sale
Casper Marc N
Chairman & CEO
CEO / President 411
Value: $210.7K
Mar 05, 2026
Sell
Common Stock
S-Sale
Casper Marc N
Chairman & CEO
CEO / President 106
Value: $54.9K
Mar 05, 2026
Sell
Common Stock
S-Sale
Casper Marc N
Chairman & CEO
CEO / President 201
Value: $103.9K
Mar 05, 2026
Sell
Common Stock
S-Sale
Casper Marc N
Chairman & CEO
CEO / President 348
Value: $179.4K
Mar 05, 2026
Sell
Common Stock
S-Sale
Casper Marc N
Chairman & CEO
CEO / President 1 133
Value: $582.0K
Mar 05, 2026
Buy
Stock Option (Right to Buy)
M-Exempt
Casper Marc N
Chairman & CEO
CEO / President 4 000
Value: $1.24M
Mar 04, 2026
Sell
Common Stock
S-Sale
Casper Marc N
Chairman & CEO
CEO / President 678
Value: $346.3K
Mar 04, 2026
Sell
Common Stock
S-Sale
Casper Marc N
Chairman & CEO
CEO / President 1 241
Value: $636.5K
Mar 04, 2026
Sell
Common Stock
S-Sale
Casper Marc N
Chairman & CEO
CEO / President 815
Value: $418.6K
Mar 04, 2026
Sell
Common Stock
S-Sale
Casper Marc N
Chairman & CEO
CEO / President 1 370
Value: $701.2K
Mar 04, 2026
Sell
Common Stock
S-Sale
Casper Marc N
Chairman & CEO
CEO / President 447
Value: $227.9K
Mar 04, 2026
Buy
Common Stock
M-Exempt
Casper Marc N
Chairman & CEO
CEO / President 5 000
Value: $1.55M
Mar 04, 2026
Sell
Common Stock
S-Sale
Casper Marc N
Chairman & CEO
CEO / President 119
Value: $61.4K
Mar 04, 2026
Sell
Common Stock
S-Sale
Casper Marc N
Chairman & CEO
CEO / President 212
Value: $109.2K
Mar 04, 2026
Buy
Stock Option (Right to Buy)
M-Exempt
Casper Marc N
Chairman & CEO
CEO / President 5 000
Value: $1.55M
Mar 04, 2026
Sell
Common Stock
S-Sale
Casper Marc N
Chairman & CEO
CEO / President 118
Value: $61.0K
Mar 03, 2026
Sell
Common Stock
S-Sale
Casper Marc N
Chairman & CEO
CEO / President 480
Value: $238.5K
Mar 03, 2026
Sell
Common Stock
S-Sale
Casper Marc N
Chairman & CEO
CEO / President 680
Value: $338.7K
Mar 03, 2026
Sell
Common Stock
S-Sale
Casper Marc N
Chairman & CEO
CEO / President 240
Value: $119.9K
Mar 03, 2026
Sell
Common Stock
S-Sale
Casper Marc N
Chairman & CEO
CEO / President 382
Value: $191.2K
Mar 03, 2026
Sell
Common Stock
S-Sale
Casper Marc N
Chairman & CEO
CEO / President 931
Value: $472.9K
Mar 03, 2026
Sell
Common Stock
S-Sale
Casper Marc N
Chairman & CEO
CEO / President 448
Value: $227.0K
Mar 03, 2026
Sell
Common Stock
S-Sale
Casper Marc N
Chairman & CEO
CEO / President 120
Value: $60.5K

About Insider Power

Insider Power is a proprietary algorithm developed by StockInvest.us to evaluate the significance of insider transactions. The calculation considers the size, type, and timing of transactions, as well as the insider’s role within the company.

It is important to note that, in general, there is little to no correlation between insider transactions and short-term stock price movements. In one of our studies, only 0.22%* of stocks with insider activity showed a measurable correlation — and even then, it was unclear whether the effect was caused by insider actions or simply by the stock’s broader trend.

While our algorithms are designed to highlight potentially meaningful signals, these cannot be regarded as statistically significant on their own. Insider trading activity should therefore be seen as informative rather than as direct trading guidance. The Insider Power metric was created to present this information in a clearer and more accessible way, helping investors better understand the possible context of insider activity.

* October 6th, 2025 - Tested on 5562 stocks

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ABOUT THERMO FISHER SCIENTIFIC INC
Thermo Fisher Scientific
Thermo Fisher Scientific Inc. offers life sciences solutions, analytical instruments, specialty diagnostics, and laboratory products and service worldwide. The company's Life Sciences Solutions segment offers reagents, instruments, and consumables for biological and medical research, discovery, and production of drugs and vaccines, as well as diagnosis of infections and diseases to pharmaceutical, biotechnology, agricultural, clinical, healthcare...
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