TMO
THERMO FISHER SCIENTIFIC INC. · Manufacturing · Market cap $258.2B
Insiders sold $61.6M net in the last 90 days ·5 sellers, 0 buyers· 9 of 12 sales under Rule 10b5-1 plans· latest Form 4 filed Sep 1, 2026
Insider Buying
$0
reported purchases (SEC code P)
Insider Selling
$158.1M
reported sales (SEC code S)
Unique Insiders
7
in the rolling window
Latest filing
Sep 1, 2026
Pettiti Gianluca
THERMO FISHER SCIENTIFIC INC. (TMO) has 63 SEC Form 4 filings (262 transaction rows) in the rolling window, disclosed by 7 distinct insiders. Most recent filing: Sep 1, 2026.
Inside the rolling window, 7 insiders at THERMO FISHER SCIENTIFIC INC. reported no open-market purchases and 31 open-market sales totaling $158.1M. The most active filer is Chairman & CEO CASPER MARC N with 11 filings. Insiders have net sold $69.7M over the trailing 6 months. The most recent open-market filing is a sale of 4,133 shares by President & COO Pettiti Gianluca, dated Aug 31, 2026, worth $2.5M.
- Industry:Medical - Diagnostics & Research
- CEO:Marc N. Casper
- Employees:125,000
- HQ:Waltham, MA, US
- IPO:1980-03-17
| Source | |||||||
|---|---|---|---|---|---|---|---|
| President & COO | Sale | 4,133 | $2.5M | Sep 1 | +15.6% | SEC ↗ | |
| Chairman & CEO | Sale | 275 | $172K | Aug 26 | +9.5% | SEC ↗ | |
| Chairman & CEO | Sale | 10,000 | $6.3M | Aug 24 | +10.4% | SEC ↗ | |
| Chairman & CEO | Sale | 10,000 | $6.3M | Aug 24 | — | SEC ↗ | |
| Sr. VP and Chief HR Officer | Sale | 11,440 | $7.0M | Aug 20 | — | SEC ↗ | |
Shafer Michael DFirst in 5 months | Executive Vice President | Sale | 25,500 | $15.3M | Aug 13 | — | SEC ↗ |
Holmes Joseph R.First filing | VP & Chief Accounting Officer | Sale | 420 | $246K | Aug 10 | — | SEC ↗ |
| Chairman & CEO | Sale | 4,883 | $2.9M | Aug 10 | — | SEC ↗ | |
Britt Lisa P.First in 9 months | Sr. VP and Chief HR Officer | Sale | 5,850 | $3.4M | Aug 7 | — | SEC ↗ |
| Chairman & CEO | Sale | 15,000 | $8.6M | Aug 7 | — | SEC ↗ | |
CASPER MARC NFirst in 5 months | Chairman & CEO | Sale | 15,000 | $8.6M | Aug 7 | — | SEC ↗ |
Pettiti GianlucaFirst in 3 months | President & COO | Sale | 400 | $226K | Jul 28 | — | SEC ↗ |
| President & COO | Sale | 400 | $185K | Apr 29 | — | SEC ↗ | |
Shafer Michael DFirst in 4 months | Executive Vice President | Sale | 1,607 | $803K | Mar 12 | — | SEC ↗ |
| Chairman & CEO | Sale | 4,000 | $2.1M | Mar 9 | — | SEC ↗ | |
CASPER MARC NFirst in 4 months | Chairman & CEO | Sale | 5,000 | $2.5M | Mar 5 | — | SEC ↗ |
CASPER MARC NFirst in 4 months | Chairman & CEO | Sale | 5,000 | $2.6M | Mar 5 | — | SEC ↗ |
Pettiti GianlucaFirst in 3 months | Executive Vice President | Sale | 400 | $216K | Feb 11 | — | SEC ↗ |
| Executive Vice President & COO | Sale | 22,046 | $12.4M | Dec 5 | — | SEC ↗ | |
| Executive Vice President & COO | Sale | 30,000 | $17.5M | Dec 4 | — | SEC ↗ | |
| Executive Vice President & COO | Sale | 32,000 | $18.7M | Dec 4 | — | SEC ↗ | |
Lowery Frederick M.First filing | Executive Vice President | Sale | 6,913 | $4.1M | Dec 3 | — | SEC ↗ |
Lowery Frederick M.First filing | Executive Vice President | Sale | 6,912 | $4.0M | Dec 3 | — | SEC ↗ |
Shafer Michael DFirst filing | Executive Vice President | Sale | 10,725 | $6.4M | Nov 26 | — | SEC ↗ |
Lagarde MichelFirst filing | Executive Vice President & COO | Sale | 4,638 | $2.8M | Nov 14 | — | SEC ↗ |
Earnings: last 7 quarters
Congress trading TMO 183 all-time
- DRep. Ro KhannaPurchase$1,001 - $15,0002026-08-07
- RRep. Michael RulliSale$1,001 - $15,0002024-12-12
- RRep. Michael A. RulliSale$1,001 - $15,0002024-12-12
- RSen. Alan ArmstrongPurchase$1,001 - $15,0002026-03-27
- RRep. Dan NewhouseSale$1,001 - $15,0002026-07-10
- RRep. Daniel Milton NewhouseSale$1,001 - $15,0002026-07-10
STOCK Act disclosures are filed up to 45 days after the trade. Amount is a disclosed range, not an exact figure.
Frequently asked questions
How many SEC Form 4 insider filings does TMO have?
THERMO FISHER SCIENTIFIC INC. (TMO) has 63 SEC Form 4 filings (262 transaction rows) in the rolling 365-day window, disclosed by 7 distinct insiders. Most recent filing: Sep 1, 2026.
When was the most recent SEC Form 4 filing for TMO?
The most recent Form 4 filing for TMO on Tracefour is dated Sep 1, 2026.
Who is the most active insider at TMO?
The most active SEC Form 4 filer at TMO in the rolling window is Chairman & CEO CASPER MARC N, with 11 filings.
What is the net insider flow at TMO over the last 6 months?
Over the trailing 180 days, insiders at TMO have net sold $69.7M based on SEC Form 4 disclosures.
What is the total insider buy and sell value at TMO in the current window?
Inside the rolling window, insiders at TMO bought $0 and sold $158.1M based on SEC Form 4 filings.
Can I get alerts for TMO insider trading?
Yes. Tracefour sends a free email when a new SEC Form 4 purchase or sale is filed at THERMO FISHER SCIENTIFIC INC. (TMO). Alerts are set per company from the page itself, there is no paid tier, and each email links to the original filing on SEC EDGAR.
Related companies
THERMO FISHER SCIENTIFIC INC. is in the Manufacturing sector.