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THERMO FISHER SCIENTIFIC INC. (TMO) S&P 500 XNYS MEASURING & CONTROLLING DEVICES, NEC Net insider selling (90d)
Latest TMO Insider Trades
About THERMO FISHER SCIENTIFIC INC. (TMO) Thermo Fisher Scientific sells scientific instruments and laboratory equipment, diagnostics consumables, and life science reagents. The firm operates through four segments as of year-end 2025 (revenue figures include some cross-segment revenue): analytical technologies (17% of sales); specialty diagnostic products (11%); life science solutions (23%); and lab products and services, which includes CRO services (the remainder).
Headquarters WALTHAM, MA
Employees 125,000
Listed 1972
Exchange XNYS https://www.thermofisher.com SEC filings for TMO on EDGAR
90-Day SEC Filing Activity Form 4 transaction type Transactions Shares Total value Open-market sale 69 83,768 $50.39M Grant or award 5 338.67 Option exercise 20 147,520
TMO Insider Transactions (Form 4) 132 113 Form 4 filings on record, the earliest from Oct 1, 2024, newest first. Filing history page 3 of 3.
Date Insider Transaction Security Shares Price Value Dec 1, 2025 FL Frederick M. Lowery - Officer Option exercise Common Stock 6,913
Recent TMO Form 8-K Filings 4
Recent TMO Form 144 Notices of Proposed Sale 3 A Form 144 is notice of an INTENDED sale, not a completed one. It often precedes the Form 4 that reports the trade actually happening.
Filed Filer Relationship Shares Market value Notice Aug 31, 2026 Pettiti Gianluca Officer 4,133 $2.54M View on EDGAR Aug 24, 2026 CASPER MARC N Officer, Director
TMO Insider Trading - FAQ
What is the latest insider trade for TMO? THERMO FISHER SCIENTIFIC INC. (TMO) had 15 insider filings in the last 90 days, with the most recent on 2026-08-26. The full record for TMO runs to 113 Form 4 filings, the earliest from 2024-10-01. InsiderAlpha tracks every Form 4, Form 144, and 8-K filing in real time.
How many insiders are buying TMO stock? No insider purchases of TMO were filed in the last 90 days.
How many insiders are selling TMO stock? 69 insider sales of TMO were filed in the last 90 days, totaling $50.39M.
Where can I see TMO SEC filings (Form 4, 10-K, 10-Q, 8-K)? This page tracks TMO Form 4 insider transactions, Form 144 sale notices, and 8-K material event disclosures in one timeline. Annual 10-K and quarterly 10-Q reports live on the company's SEC EDGAR page.
How can I follow TMO insider buys? Create a free InsiderAlpha account and press Watch on this page to add TMO to your watchlist. A free account also opens the full scored daily plan with every past day and 3 months of price history. No card is required. Sign up at https://insideralpha.ai/register.
More Information Technology Companies with Insider Activity Every Form 4 below links to the original document on SEC EDGAR, so the numbers on this page can be checked against the filing they came from.
Related Companies - Recent Insider Activity What is SEC Form 4? The filing insiders must submit within two business days of a trade, and how to read its transaction codes. Track TMO insider activity as it files Real-time Form 4 alerts, AI-scored daily trade ideas and 10b5-1 plan flags.
Sign up free Aug 24, 2026
Market cap $230.05B
P/E ratio 33.20
Dividend yield 0.30%
Average volume 2.10M
52 week high $647.00
52 week low $435.27
Today's high $620.72
Today's low $610.35
Open $614.38
Volume 1.43M
Previous close $622.18
Shares outstanding 369.75M Market cap
$230.05B
125,000 employees
TMO Insider Sentiment - Last 90 Days Share of open-market insider dollar volume that was buying versus selling, from SEC Form 4 filings.
0% Buying 100% Selling
0 insider purchases totaling $0 against 69 sales totaling $50.39M.
Most-Active TMO Insiders - Last 90 Days 10 Tax withholding / forfeiture 1 30.95
Dollar totals are shown for open-market purchases and sales only. Grants, option exercises, gifts and tax withholding are reported by share count because they are not trades at a market price.
Dec 1, 2025 FL Frederick M. Lowery - Officer Option exercise Stock Option (Right to Buy) 6,913 $0.00 -
Dec 2, 2025 FL Frederick M. Lowery - Officer Option exercise Stock Option (Right to Buy) 6,912 $0.00 -
Nov 25, 2025 MS Michael D. Shafer - Officer Option exercise Common Stock 8,475 $253.99 $2.15M
Nov 25, 2025 MS Michael D. Shafer - Officer Option exercise Common Stock 2,250 $294.02 $662K
Nov 25, 2025 MS Michael D. Shafer - Officer Open-market sale Common Stock 8,475 $600.00 $5.08M
Nov 25, 2025 MS Michael D. Shafer - Officer Open-market sale Common Stock 2,250 $600.00 $1.35M
Nov 25, 2025 MS Michael D. Shafer - Officer Option exercise Stock Option (Right to Buy) 8,475 $0.00 -
Nov 25, 2025 MS Michael D. Shafer - Officer Option exercise Stock Option (Right to Buy) 2,250 $0.00 -
Nov 12, 2025 LB Lisa P. Britt - Officer Open-market sale Common Stock 1,058 $588.27 $622K
Nov 13, 2025 ML Michel Lagarde - Officer Option exercise Common Stock 4,638 $253.99 $1.18M
Nov 13, 2025 ML Michel Lagarde - Officer Open-market sale Common Stock 4,638 $594.42 $2.76M
Nov 13, 2025 ML Michel Lagarde - Officer Option exercise Stock Option (Right to Buy) 4,638 $0.00 -
Nov 10, 2025 GP Gianluca Pettiti - Officer Option exercise Common Stock 725 $253.99 $184K
Nov 10, 2025 GP Gianluca Pettiti - Officer Option exercise Common Stock 2,250 $294.02 $662K
Nov 10, 2025 GP Gianluca Pettiti - Officer Open-market sale Common Stock 725 $580.00 $421K
Nov 10, 2025 GP Gianluca Pettiti - Officer Open-market sale Common Stock 2,250 $580.00 $1.30M
Nov 10, 2025 GP Gianluca Pettiti - Officer Option exercise Stock Option (Right to Buy) 725 $0.00 -
Nov 10, 2025 GP Gianluca Pettiti - Officer Option exercise Stock Option (Right to Buy) 2,250 $0.00 -
Nov 7, 2025 LB Lisa P. Britt - Officer Open-market sale Common Stock 1,750 $571.40 $1.00M
Nov 7, 2025 LB Lisa P. Britt - Officer Option exercise Common Stock 8,475 $253.99 $2.15M
Nov 7, 2025 LB Lisa P. Britt - Officer Open-market sale Common Stock 8,475 $571.67 $4.84M
Nov 7, 2025 LB Lisa P. Britt - Officer Option exercise Stock Option (Right to Buy) 8,475 $0.00 -
Oct 24, 2025 MC Marc N. Casper - Officer Open-market sale Common Stock 4,762 $573.37 $2.73M
Oct 24, 2025 MC Marc N. Casper - Officer Open-market sale Common Stock 7,331 $574.20 $4.21M
Oct 24, 2025 MC Marc N. Casper - Officer Open-market sale Common Stock 1,293 $575.02 $744K
Oct 27, 2025 MC Marc N. Casper - Officer Open-market sale Common Stock 109 $561.68 $61K
Oct 27, 2025 MC Marc N. Casper - Officer Open-market sale Common Stock 241 $562.63 $136K
Oct 27, 2025 MC Marc N. Casper - Officer Open-market sale Common Stock 1,193 $563.72 $673K
Oct 27, 2025 MC Marc N. Casper - Officer Open-market sale Common Stock 2,513 $564.44 $1.42M
Oct 27, 2025 MC Marc N. Casper - Officer Open-market sale Common Stock 937 $565.47 $530K
Oct 27, 2025 MC Marc N. Casper - Officer Open-market sale Common Stock 181 $566.47 $103K
Oct 27, 2025 MC Marc N. Casper - Officer Open-market sale Common Stock 141 $567.57 $80K
Oct 27, 2025 MC Marc N. Casper - Officer Open-market sale Common Stock 189 $568.98 $108K
Oct 27, 2025 MC Marc N. Casper - Officer Open-market sale Common Stock 670 $569.93 $382K
Oct 27, 2025 MC Marc N. Casper - Officer Open-market sale Common Stock 728 $570.91 $416K
Oct 27, 2025 MC Marc N. Casper - Officer Open-market sale Common Stock 348 $571.99 $199K
Oct 24, 2025 MC Marc N. Casper - Officer Option exercise Stock Option (Right to Buy) 17,104 $0.00 -
Oct 27, 2025 MC Marc N. Casper - Officer Option exercise Stock Option (Right to Buy) 7,250 $0.00 -
Oct 24, 2025 MC Marc N. Casper - Officer Option exercise Common Stock 17,104 $253.99 $4.34M
Oct 27, 2025 MC Marc N. Casper - Officer Option exercise Common Stock 7,250 $253.99 $1.84M
Oct 24, 2025 MC Marc N. Casper - Officer Open-market sale Common Stock 1,249 $571.30 $714K
Oct 24, 2025 MC Marc N. Casper - Officer Open-market sale Common Stock 2,469 $572.28 $1.41M
Oct 24, 2025 GP Gianluca Pettiti - Officer Open-market sale Common Stock 400 $574.15 $230K
Sep 27, 2025 KL Karen S. Lynch - Director Grant or award Phantom Stock Units 67.31 - -
Sep 27, 2025 DW Dion J. Weisler - Director Grant or award Phantom Stock Units 80.78 - -
Sep 5, 2025 MC Marc N. Casper - Officer Option exercise Common Stock 400 $253.99 $102K
Sep 5, 2025 MC Marc N. Casper - Officer Open-market sale Common Stock 200 $500.00 $100K
Sep 5, 2025 MC Marc N. Casper - Officer Open-market sale Common Stock 100 $501.00 $50K
Sep 5, 2025 MC Marc N. Casper - Officer Open-market sale Common Stock 100 $501.01 $50K
Sep 5, 2025 MC Marc N. Casper - Officer Option exercise Stock Option (Right to Buy) 400 $0.00 -
Aug 28, 2025 ML Michel Lagarde - Officer Tax withholding / forfeiture Common Stock 262.06 $489.74 $128K
Aug 28, 2025 ML Michel Lagarde - Officer Tax withholding / forfeiture Common Stock 262.06 $489.74 $128K
Aug 28, 2025 ML Michel Lagarde - Officer Tax withholding / forfeiture Common Stock 275.11 $489.74 $135K
Aug 28, 2025 ML Michel Lagarde - Officer Tax withholding / forfeiture Common Stock 161.97 $489.74 $79K
Aug 28, 2025 JH Joseph R. Holmes - Officer Tax withholding / forfeiture Common Stock 8.51 $489.74 $4K
Aug 28, 2025 JH Joseph R. Holmes - Officer Tax withholding / forfeiture Common Stock 10.57 $489.74 $5K
Aug 28, 2025 JH Joseph R. Holmes - Officer Tax withholding / forfeiture Common Stock 10.86 $489.74 $5K
Aug 28, 2025 JH Joseph R. Holmes - Officer Tax withholding / forfeiture Common Stock 7.05 $489.74 $3K
Aug 29, 2025 JH Joseph R. Holmes - Officer Option exercise Common Stock 385 $253.99 $98K
Aug 29, 2025 JH Joseph R. Holmes - Officer Open-market sale Common Stock 100 $492.62 $49K
Aug 29, 2025 JH Joseph R. Holmes - Officer Open-market sale Common Stock 285 $492.63 $140K
Aug 29, 2025 JH Joseph R. Holmes - Officer Option exercise Stock Option (Right to Buy) 385 $0.00 -
Aug 28, 2025 MS Michael D. Shafer - Officer Tax withholding / forfeiture Common Stock 145.05 $489.74 $71K
Aug 28, 2025 MS Michael D. Shafer - Officer Tax withholding / forfeiture Common Stock 162.46 $489.74 $80K
Aug 28, 2025 MS Michael D. Shafer - Officer Tax withholding / forfeiture Common Stock 176.48 $489.74 $86K
Aug 28, 2025 MS Michael D. Shafer - Officer Tax withholding / forfeiture Common Stock 114.11 $489.74 $56K
Aug 28, 2025 FL Frederick M. Lowery - Officer Tax withholding / forfeiture Common Stock 175.03 $489.74 $86K
Aug 28, 2025 FL Frederick M. Lowery - Officer Tax withholding / forfeiture Common Stock 187.12 $489.74 $92K
Aug 28, 2025 FL Frederick M. Lowery - Officer Tax withholding / forfeiture Common Stock 186.63 $489.74 $91K
Aug 28, 2025 FL Frederick M. Lowery - Officer Tax withholding / forfeiture Common Stock 118.94 $489.74 $58K
Aug 28, 2025 MC Marc N. Casper - Officer Tax withholding / forfeiture Common Stock 686.57 $489.74 $336K
Aug 28, 2025 MC Marc N. Casper - Officer Tax withholding / forfeiture Common Stock 724.77 $489.74 $355K
Aug 28, 2025 SW Stephen Williamson - Officer Tax withholding / forfeiture Common Stock 214.67 $489.74 $105K
Aug 28, 2025 SW Stephen Williamson - Officer Tax withholding / forfeiture Common Stock 219.51 $489.74 $108K
Aug 28, 2025 SW Stephen Williamson - Officer Tax withholding / forfeiture Common Stock 237.88 $489.74 $117K
Aug 28, 2025 SW Stephen Williamson - Officer Tax withholding / forfeiture Common Stock 111.21 $489.74 $54K
Aug 28, 2025 LB Lisa P. Britt - Officer Tax withholding / forfeiture Common Stock 81.23 $489.74 $40K
Aug 28, 2025 LB Lisa P. Britt - Officer Tax withholding / forfeiture Common Stock 87.51 $489.74 $43K
Aug 28, 2025 LB Lisa P. Britt - Officer Tax withholding / forfeiture Common Stock 96.7 $489.74 $47K
Aug 28, 2025 LB Lisa P. Britt - Officer Tax withholding / forfeiture Common Stock 63.34 $489.74 $31K
Aug 28, 2025 GP Gianluca Pettiti - Officer Tax withholding / forfeiture Common Stock 199.69 $489.74 $98K
Aug 28, 2025 GP Gianluca Pettiti - Officer Tax withholding / forfeiture Common Stock 212.26 $489.74 $104K
Aug 28, 2025 GP Gianluca Pettiti - Officer Tax withholding / forfeiture Common Stock 253.35 $489.74 $124K
Aug 28, 2025 GP Gianluca Pettiti - Officer Tax withholding / forfeiture Common Stock 149.4 $489.74 $73K
Aug 22, 2025 MC Marc N. Casper - Officer Option exercise Common Stock 10,000 $253.99 $2.54M
Aug 22, 2025 MC Marc N. Casper - Officer Open-market sale Common Stock 5,823 $500.40 $2.91M
Aug 22, 2025 MC Marc N. Casper - Officer Open-market sale Common Stock 3,579 $501.65 $1.80M
Aug 22, 2025 MC Marc N. Casper - Officer Open-market sale Common Stock 598 $502.26 $300K
Aug 22, 2025 MC Marc N. Casper - Officer Option exercise Stock Option (Right to Buy) 10,000 $0.00 -
Aug 19, 2025 MC Marc N. Casper - Officer Option exercise Common Stock 201 $253.99 $51K
Aug 19, 2025 MC Marc N. Casper - Officer Open-market sale Common Stock 201 $500.17 $101K
Aug 20, 2025 MC Marc N. Casper - Officer Option exercise Common Stock 295 $253.99 $75K
Aug 20, 2025 MC Marc N. Casper - Officer Open-market sale Common Stock 200 $500.00 $100K
Aug 20, 2025 MC Marc N. Casper - Officer Open-market sale Common Stock 95 $500.13 $48K
Aug 19, 2025 MC Marc N. Casper - Officer Option exercise Stock Option (Right to Buy) 201 $0.00 -
Aug 20, 2025 MC Marc N. Casper - Officer Option exercise Stock Option (Right to Buy) 295 $0.00 -
Aug 6, 2025 MC Marc N. Casper - Officer Option exercise Common Stock 10,000 $253.99 $2.54M
Aug 6, 2025 MC Marc N. Casper - Officer Open-market sale Common Stock 548 $446.92 $245K
Aug 6, 2025 MC Marc N. Casper - Officer Open-market sale Common Stock 1,257 $447.96 $563K
Aug 6, 2025 MC Marc N. Casper - Officer Open-market sale Common Stock 1,147 $448.99 $515K
Aug 6, 2025 MC Marc N. Casper - Officer Open-market sale Common Stock 1,736 $449.91 $781K
Aug 6, 2025 MC Marc N. Casper - Officer Open-market sale Common Stock 887 $451.04 $400K
Aug 6, 2025 MC Marc N. Casper - Officer Open-market sale Common Stock 631 $452.13 $285K
Aug 6, 2025 MC Marc N. Casper - Officer Open-market sale Common Stock 811 $453.09 $367K
Aug 6, 2025 MC Marc N. Casper - Officer Open-market sale Common Stock 566 $454.56 $257K
Aug 6, 2025 MC Marc N. Casper - Officer Open-market sale Common Stock 1,354 $455.64 $617K
Aug 6, 2025 MC Marc N. Casper - Officer Open-market sale Common Stock 529 $456.22 $241K
Aug 6, 2025 MC Marc N. Casper - Officer Open-market sale Common Stock 251 $458.62 $115K
Aug 6, 2025 MC Marc N. Casper - Officer Open-market sale Common Stock 16 $459.25 $7K
Aug 6, 2025 MC Marc N. Casper - Officer Open-market sale Common Stock 149 $461.31 $69K
Aug 6, 2025 MC Marc N. Casper - Officer Open-market sale Common Stock 96 $462.32 $44K
Aug 6, 2025 MC Marc N. Casper - Officer Open-market sale Common Stock 22 $464.68 $10K
Aug 7, 2025 MC Marc N. Casper - Officer Option exercise Common Stock 8,000 $253.99 $2.03M
Aug 7, 2025 MC Marc N. Casper - Officer Open-market sale Common Stock 1,186 $452.68 $537K
Aug 7, 2025 MC Marc N. Casper - Officer Open-market sale Common Stock 1,552 $453.40 $704K
Aug 7, 2025 MC Marc N. Casper - Officer Open-market sale Common Stock 2,678 $454.57 $1.22M
Aug 7, 2025 MC Marc N. Casper - Officer Open-market sale Common Stock 1,988 $455.56 $906K
Aug 7, 2025 MC Marc N. Casper - Officer Open-market sale Common Stock 596 $456.41 $272K
Aug 6, 2025 MC Marc N. Casper - Officer Option exercise Stock Option (Right to Buy) 10,000 $0.00 -
Aug 7, 2025 MC Marc N. Casper - Officer Option exercise Stock Option (Right to Buy) 8,000 $0.00 -
Jul 25, 2025 GP Gianluca Pettiti - Officer Open-market sale Common Stock 400 $479.98 $192K
Jun 28, 2025 DW Dion J. Weisler - Director Grant or award Phantom Stock Units 91.85 - -
Aug 21, 2026 CASPER MARC N Officer, Director 10,000 $6.27M View on EDGAR
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TrueCar, Inc.
Marc N. Casper - OfficerOpen-market sale$63K
