Thermo Fisher Scientific Inc. (TMO) — Insider Trading

Name: Insider Trading Thermo Fisher Scientific Inc. (TMO) — September 2026
Creator: WhaleSentiment

Sector: Healthcare • All Insider Transactions

🔄 Last update: 09/19/2026 at 14:10 UTC

Sales (90d)

$44.1M

52 transactions

Buys (90d)

0 transactions

WhaleSentiment Score ℹ️

🟡 -47

Attenzione

Form 144 Filings

Upcoming sale notices

Stock Price TMO 📉

TMO stock price — last 6 months

Last Price

$651.45

18/09/2026 (market close)

Daily Change

-6.87 (-1.04%)

6-Month Performance

+38.8%

$469.38 → $651.45

6M High / 6M Low

$658.32

Min: $437.57

▲ = insider buy (0), ▼ = insider sell (52)

Data from Yahoo Finance, 15-min delay. Last update: 18/09/2026 (market close).

All Insider Transactions TMO — 2026

Insider Transactions

Date	Insider	Role	Type	Shares	Price	Value
08/31/2026	Pettiti Gianluca	President & COO	Sale	400	$614.38	$0.2M
08/31/2026	Pettiti Gianluca	President & COO	Exercise	3,733	$309.63	$1.2M
08/31/2026	Pettiti Gianluca	President & COO	Sale	3,733	$614.38	$2.3M
08/31/2026	Pettiti Gianluca	President & COO	Exercise	3,733	—	—
08/28/2026	CASPER MARC N	Chairman & CEO	Tax	724	$622.18	$0.5M
08/28/2026	CASPER MARC N	Chairman & CEO	Tax	531	$622.18	$0.3M
08/28/2026	Meyer James	Sr. Vice President & CFO	Tax	37	$622.18	$0.02M
08/28/2026	Meyer James	Sr. Vice President & CFO	Tax	44	$622.18	$0.03M
08/28/2026	Meyer James	Sr. Vice President & CFO	Tax	19	$622.18	$0.01M
08/28/2026	Meyer James	Sr. Vice President & CFO	Tax	55	$622.18	$0.03M
08/28/2026	Meyer James	Sr. Vice President & CFO	Tax	113	$622.18	$0.07M
08/28/2026	Shropshire Thomas B Jr.	SVP and General Counsel	Tax	49	$622.18	$0.03M
08/28/2026	Shafer Michael D	Executive Vice President	Tax	162	$622.18	$0.1M
08/28/2026	Shafer Michael D	Executive Vice President	Tax	210	$622.18	$0.1M
08/28/2026	Shafer Michael D	Executive Vice President	Tax	189	$622.18	$0.1M
08/28/2026	Shafer Michael D	Executive Vice President	Tax	227	$622.18	$0.1M
08/28/2026	Holmes Joseph R.	VP & Chief Accounting Officer	Tax	10	$622.18	$0.007M
08/28/2026	Holmes Joseph R.	VP & Chief Accounting Officer	Tax	12	$622.18	$0.008M
08/28/2026	Holmes Joseph R.	VP & Chief Accounting Officer	Tax	11	$622.18	$0.007M
08/28/2026	Holmes Joseph R.	VP & Chief Accounting Officer	Tax	14	$622.18	$0.009M
08/28/2026	Pettiti Gianluca	President & COO	Tax	212	$622.18	$0.1M
08/28/2026	Pettiti Gianluca	President & COO	Tax	303	$622.18	$0.2M
08/28/2026	Pettiti Gianluca	President & COO	Tax	249	$622.18	$0.2M
08/28/2026	Pettiti Gianluca	President & COO	Tax	269	$622.18	$0.2M
08/28/2026	Britt Lisa P.	Sr. VP and Chief HR Officer	Tax	87	$622.18	$0.05M
08/28/2026	Britt Lisa P.	Sr. VP and Chief HR Officer	Tax	116	$622.18	$0.07M
08/28/2026	Britt Lisa P.	Sr. VP and Chief HR Officer	Tax	105	$622.18	$0.07M
08/28/2026	Britt Lisa P.	Sr. VP and Chief HR Officer	Tax	85	$622.18	$0.05M
08/24/2026	CASPER MARC N	Chairman & CEO	Exercise	275	$309.63	$0.09M
08/24/2026	CASPER MARC N	Chairman & CEO	Sale	101	$625.41	$0.06M
08/24/2026	CASPER MARC N	Chairman & CEO	Sale	33	$626.59	$0.02M
08/24/2026	CASPER MARC N	Chairman & CEO	Sale	79	$628.01	$0.05M
08/24/2026	CASPER MARC N	Chairman & CEO	Sale	62	$628.74	$0.04M
08/24/2026	CASPER MARC N	Chairman & CEO	Exercise	275	—	—
08/22/2026	Meyer James	Sr. Vice President & CFO	Tax	30	$629.27	$0.02M
08/21/2026	CASPER MARC N	Chairman & CEO	Exercise	10,000	$309.63	$3.1M
08/21/2026	CASPER MARC N	Chairman & CEO	Sale	2,727	$625.46	$1.7M
08/21/2026	CASPER MARC N	Chairman & CEO	Sale	3,014	$626.51	$1.9M
08/21/2026	CASPER MARC N	Chairman & CEO	Sale	1,791	$627.39	$1.1M
08/21/2026	CASPER MARC N	Chairman & CEO	Sale	2,147	$628.61	$1.3M
08/21/2026	CASPER MARC N	Chairman & CEO	Sale	321	$629.10	$0.2M
08/21/2026	CASPER MARC N	Chairman & CEO	Exercise	10,000	—	—
08/20/2026	CASPER MARC N	Chairman & CEO	Exercise	10,000	$309.63	$3.1M
08/20/2026	CASPER MARC N	Chairman & CEO	Sale	909	$625.45	$0.6M
08/20/2026	CASPER MARC N	Chairman & CEO	Sale	821	$626.83	$0.5M
08/20/2026	CASPER MARC N	Chairman & CEO	Sale	1,314	$627.66	$0.8M
08/20/2026	CASPER MARC N	Chairman & CEO	Sale	2,601	$628.82	$1.6M
08/20/2026	CASPER MARC N	Chairman & CEO	Sale	1,250	$629.85	$0.8M
08/20/2026	CASPER MARC N	Chairman & CEO	Sale	1,035	$630.87	$0.7M
08/20/2026	CASPER MARC N	Chairman & CEO	Sale	1,430	$632.01	$0.9M

Holdings Summary

Insider	Role	Shares Held	Last Transaction
CASPER MARC N	Chairman & CEO	123,200	08/28/2026
Pettiti Gianluca	President & COO	23,216	08/31/2026
Shafer Michael D	Executive Vice President	20,831	08/28/2026
Britt Lisa P.	Sr. VP and Chief HR Officer	14,697	08/28/2026
Shropshire Thomas B Jr.	SVP and General Counsel	6,008	08/28/2026
Meyer James	Sr. Vice President & CFO	5,792	08/28/2026
Holmes Joseph R.	VP & Chief Accounting Officer	2,955	08/28/2026

⚠️ Form 144 — Upcoming Sale Notices

Form 144 is filed BEFORE the actual sale. It is an important leading indicator.

Filing Date	Type	SEC Link
08/31/2026	144	View Filing →
08/24/2026	144	View Filing →
08/21/2026	144	View Filing →
08/20/2026	144	View Filing →
08/19/2026	144	View Filing →
08/11/2026	144	View Filing →
08/07/2026	144	View Filing →
08/07/2026	144	View Filing →
08/06/2026	144	View Filing →
08/06/2026	144	View Filing →

Financial Context

Recent financial data from SEC filings (XBRL) to contextualize insider activity.

Revenue (latest quarter)

$5853M

Period: 2018-03-31

Net Income

$1736M

Profit

Diluted EPS

$4.68

Per share

What is Insider Trading on Thermo Fisher Scientific Inc.?

Legal insider trading occurs when executives, directors, and major shareholders (>10%) of a public company buy or sell shares of their own company and report it to the SEC via Form 4.

How to Read the Data

Open market purchases (P) — the strongest signal. The insider uses their own money to buy shares.

Signals to Watch for TMO

Cluster buying: multiple Thermo Fisher Scientific Inc. insiders buying in the same week → very bullish signal
Excessive selling: selling volume above historical average → possible concern signal
Form 144: filing of a sale notice → imminent sale in the coming days/weeks
10b5-1 Plan: pre-programmed sales are less significant than discretionary sales

Sources & References

All data on this page comes directly from public SEC filings.

📋 View all Form 4 filings on SEC EDGAR TMO →

Insider Trading — Healthcare Sector

Other Healthcare stocks with monitored insider activity:

🔥 Most Active Stocks — Insider Trading

Stocks with the highest number of recent insider transactions:

📚 Related Resources

⚠️ Disclaimer: WhaleSentiment provides public SEC data for informational and educational purposes only. It does not provide financial advice, investment recommendations, or solicitation to buy/sell financial instruments. Always consult a qualified financial advisor before making investment decisions.