TMOHealthcareLarge-Cap
THERMO FISHER SCIENTIFIC INC. Insider Trading Activity
Every SEC Form 4 insider transaction reported for THERMO FISHER SCIENTIFIC INC. (TMO), sourced directly from SEC EDGAR and updated as new filings are accepted.
By Trabud Research Team · SEC Form 4 & insider trading data analysts
Last updated:
Quick Answer
Are TMO insiders buying or selling?
THERMO FISHER SCIENTIFIC INC. insiders reported 2 open-market buys ($4.7K) and 152 sells ($1.1B) across 154 Form 4 filings — a net selling position of $1.1B.
Source: SEC EDGAR Form 4
Key Statistics (as of Apr 29, 2026)
Total Form 4 filings
154
SEC EDGAR
Insider filers
19
Insider buys (2)
$4.7K
Insider sells (152)
$1.1B
Insider sentiment
Net sellingNet insider flow of $1.1B in net selling.
Recent TMO insider transactions
| Date | Insider | Role | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Apr 29, 2026 | Gianluca Pettiti | President & COO | Sale | 400 | $462.66 | $185.1K |
| Mar 12, 2026 | Michael D Shafer | Executive Vice President | Sale | 1.6K | $499.40 | $802.5K |
| Mar 9, 2026 | Marc N Casper | Chairman & CEO | Sale | 4.0K | $514.82 | $2.1M |
| Mar 5, 2026 | Marc N Casper | Chairman & CEO | Sale | 10.0K | $507.75 | $5.1M |
| Feb 11, 2026 | Gianluca Pettiti | Executive Vice President | Sale | 400 | $541.20 | $216.5K |
| Dec 5, 2025 | Michel Lagarde | Executive Vice President & COO | Sale | 22.0K | $563.56 | $12.4M |
| Dec 4, 2025 | Michel Lagarde | Executive Vice President & COO | Sale | 62.0K | $582.68 | $36.1M |
| Dec 3, 2025 | Frederick M. Lowery | Executive Vice President | Sale | 13.8K | $589.81 | $8.2M |
| Nov 26, 2025 | Michael D Shafer | Executive Vice President | Sale | 10.7K | $600.00 | $6.4M |
| Nov 14, 2025 | Lisa P. Britt | Sr. VP and Chief HR Officer | Sale | 1.1K | $588.26 | $622.1K |
| Nov 14, 2025 | Michel Lagarde | Executive Vice President & COO | Sale | 4.6K | $594.42 | $2.8M |
| Nov 12, 2025 | Gianluca Pettiti | Executive Vice President | Sale | 3.0K | $580.00 | $1.7M |
| Nov 10, 2025 | Lisa P. Britt | Sr. VP and Chief HR Officer | Sale | 10.2K | $571.62 | $5.8M |
| Oct 28, 2025 | Gianluca Pettiti | Executive Vice President | Sale | 400 | $574.15 | $229.7K |
| Oct 28, 2025 | Marc N Casper | Chairman & CEO | Sale | 24.4K | $571.33 | $13.9M |
| Sep 9, 2025 | Marc N Casper | Chairman & CEO | Sale | 400 | $500.50 | $200.2K |
| Sep 2, 2025 | Joseph R. Holmes | VP & Chief Accounting Officer | Sale | 385 | $492.63 | $189.7K |
| Aug 26, 2025 | Marc N Casper | Chairman & CEO | Sale | 10.0K | $500.96 | $5.0M |
| Aug 21, 2025 | Marc N Casper | Chairman & CEO | Sale | 496 | $500.09 | $248.0K |
| Aug 7, 2025 | Marc N Casper | Chairman & CEO | Sale | 18.0K | $452.99 | $8.2M |
| Jul 28, 2025 | Gianluca Pettiti | Executive Vice President | Sale | 400 | $479.98 | $192.0K |
| May 13, 2025 | Gianluca Pettiti | Executive Vice President | Sale | 400 | $411.11 | $164.4K |
| Apr 30, 2025 | Gianluca Pettiti | Executive Vice President | Sale | 300 | $429.93 | $129.0K |
| Mar 11, 2025 | Michael A Boxer | SVP and General Counsel | Sale | 3.8K | $532.53 | $2.0M |
| Mar 6, 2025 | Marc N Casper | Chairman & CEO | Sale | 18.0K | $518.16 | $9.3M |
Showing the 25 most recent of 154 Form 4 filings for THERMO FISHER SCIENTIFIC INC..
Most active TMO insiders
- Marc N Casper66 filings
- Stephen Williamson14 filings
- Gianluca Pettiti12 filings
- Mark Stevenson10 filings
- Michel Lagarde10 filings
Ask anything about TMO insider activity
Use Trabud's AI agent to query THERMO FISHER SCIENTIFIC INC.'s Form 4 history in plain English — "Show me TMO CEO purchases this year" or compare it against any other ticker.
Open the AI agentTMO insider trading FAQ
Are THERMO FISHER SCIENTIFIC INC. insiders buying or selling?
Across 154 SEC Form 4 filings, THERMO FISHER SCIENTIFIC INC. (TMO) insiders reported 2 open-market purchases totaling $4.7K and 152 sales totaling $1.1B. That is a net selling position of $1.1B.
How many insiders trade TMO stock?
19 distinct insider filers — officers, directors, 10%+ owners, and investment groups filing jointly — have reported Form 4 transactions for THERMO FISHER SCIENTIFIC INC.. The most recent filing was accepted on Apr 29, 2026.
Where does Trabud get TMO insider trading data?
All TMO insider trading data comes directly from official SEC EDGAR Form 4 filings, which corporate insiders must submit within two business days of a transaction under Section 16(a) of the Securities Exchange Act of 1934.
Looking for another company? Browse all tracked companies.