Company profile
Thermo Fisher Scientific Inc. Insider Trading
TMOEvery SEC Form 4 insider trading filing for Thermo Fisher Scientific Inc. (TMO) since April 2023 — open-market buys and sells by directors and officers, option exercises, and cluster activity, updated as each filing is reported to the SEC. Why 2023?
- Exchange
- NYSE
- Sector
- Measuring & Controlling Devices, NEC
- CIK
- 0000097745
- Filings
- 301
- Insiders
- 23
- Last filing
- 2026-08-31
Activity summary
Recent insider activity is bearish. Over the last 30 days, insiders net sold $5.0M across 25 transactions, with 8 offsetting purchases.
Three year balance
Buy and sell value by quarter, Q4 23 to Q3 26. Thermo Fisher Scientific Inc. insiders were net sellers in every quarter shown.
Bars below the rule are sales, above are purchases. Largest quarter on the chart is $88.4M.
90 day insight
Over the last 90 days, Thermo Fisher Scientific Inc. insiders bought $7.4M (8 transactions) and sold $2.4M (25 transactions).
- Most active insider: Marc N Casper with 23 transactions totaling $18.8M.
- Largest single purchase: $3.1M by Marc N Casper on Aug 21, 2026.
- 40% of recent sales were pre-scheduled 10b5-1 trades — typically less informative than open-market activity.
Activity skews bearish — sales outpace buys.
Insider Transactions
Sourced from SEC EDGAR Form 4 filings. Updated hourly.
| Date | Insider | Company | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Aug 31, 2026 | Gianluca Pettiti | TMO | Sale10b5 | 3,733 | $614.38 | $2.29M |
| Aug 31, 2026 | Gianluca Pettiti | TMO | Option Exercise | 3,733 | — | — |
| Aug 31, 2026 | Gianluca Pettiti | TMO | Option Exercise | 3,733 | $309.63 | $1.16M |
| Aug 31, 2026 | Gianluca Pettiti | TMO | Sale10b5 | 400 | $614.38 | $246K |
| Aug 28, 2026 | James Meyer | TMO | Tax Withholding | 19.824 | $622.18 | $12K |
45 more transactions hidden
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-H "X-Api-Key: $KEY"Top insiders
By total value filed.
Institutional Ownership
Top 13F-HR holders of Thermo Fisher Scientific Inc. as of 2026-06-30
Data source: quarterly 13F-HR filings — institutional holders report positions within 45 days of quarter end. Joined with insider activity above — see who's loading up institutionally while insiders are trading. Full 13F-HR API →