Insider trade

CEO sold ~$178K of TMO shares in the open market

Traded Mar 3, 2026 · Filed Mar 5, 2026

~$178K
Reported value · 360 sh @ $495.29: 129K
Holds after · shares reported: +28.4%
stock since the trade · S&P 500 +12.3%, $508.10 → $652.51 on Oct 1

Why it stands out

The boss of Thermo Fisher Scientific sold $178K of Thermo Fisher Scientific shares. It was planned long ago, so it says very little.

Written from the filing's own figures. OQRO describes what was reported and never tells you what to buy or sell

View the official recordSEC Form 4 — Statement of Changes in Beneficial Ownership

All the details

Dates, kept separate

Transaction date: Mar 3, 2026
Reporting period: Not applicable
Filed with the SEC: Mar 5, 2026

CEO$100K–$500KPre-arranged plan referenced

Context

Classification

open market sale

Code S — open-market or private sale

Absolute commitment

~$178,304

Shares × reported transaction price

Timing vs results

33 days after results of Jan 29, 2026, 51 days before results of Apr 23, 2026

Results dates are the company's own 8-K (Item 2.02). Many companies only let insiders trade in a window after results

Price at the time

Closed at $508.10 on Mar 3, 2026, 30% above its 52-week low and 21% below its high, after an 18% drop over the previous 30 trading days

52-week range $390.26 (Jun 17, 2025) to $639.45 (Jan 22, 2026), 47% of the way up, from 251 adjusted closes. 30 trading days earlier: $618.72 on Jan 16, 2026. Describes the past only, not a forecast

Layoff notice nearby

A WARN layoff notice covering 173 workers was filed in California on January 27, 2026.

From the official state WARN list, 35 days before the trade. Shown for timing only; the two filings are separate

Planned / mechanical clue

Footnote references a pre-arranged trading plan (Rule 10b5-1)

Only flagged when a footnote says so; never inferred

After it was reported

After	Stock	S&P 500	Difference
7 days	-7.5%	-1.5%	-6.0%
30 days	-2.8%	-2.0%	-0.8%
90 days	-4.0%	+12.6%	-16.6%
180 days	+21.2%	+13.8%	+7.4%

Past results only. Not a forecast.

Source receipt

Record ID: 0000097745-26-000055
Filed / recorded: Mar 5, 2026, 9:53 PM UTC
Added to OQRO: Oct 2, 2026, 12:28 PM UTC
Parser: form4-xml-v1
Data quality: Verified: identifiers matched exactly
Issuer: THERMO FISHER SCIENTIFIC INC.
Issuer CIK: 97745
Ticker: TMO
Reporting person: Marc N Casper
Relationship: Director, Officer
Officer title: Chairman & CEO
Security: Common Stock
Table: Non-derivative (Table I)
Transaction date: Mar 3, 2026
Transaction code: S
Shares / units: 360
Price per share: $495.29
Acquired / disposed: Disposed (D)
Shares owned after: 128,565.358
Ownership form: Direct
Amendment: No

Footnotes from the filing

The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 11, 2025.
The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $495.08 to $495.46, inclusive. The reporting person undertakes to provide to Thermo Fisher Scientific Inc. ("TMO"), any security holder of TMO or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnotes (2), (3), (4), (5), (6), (7), (8), (9), (10), (11), (12), (13), (14), (15), (16), (17), (18), (19), (20), and (21) to this Form 4.