Dion J. Weisler - 20 May 2026 Form 4 Insider Report for THERMO FISHER SCIENTIFIC INC. (TMO)

Reporting relationship
Director
Issuer ticker
TMO
Reported as of
20 May 2026
Net transaction value
$0
Source evidence Original filing metadata and source links for verification. 5 source fields
SEC form
4
Accepted by SEC
22 May 2026, 16:18:52 UTC
Prior SEC filing
15 May 2026
Next SEC filing
30 Jun 2026
Source filing
View source filing
Reporting owner 1 detail
Reporting owner signature
/s/ Melodie T. Morin, Attorney-in-Fact for Dion J. Weisler

Key filing fact

Dion J. Weisler filed Form 4 for THERMO FISHER SCIENTIFIC INC. (TMO) on 22 May 2026.

Key facts

  • This page summarizes Dion J. Weisler's Form 4 filing for THERMO FISHER SCIENTIFIC INC. (TMO).
  • 2 reported transactions and 0 derivative rows are listed below.
  • Accepted by SEC: 22 May 2026, 16:18.

Change

  • Previous filing in this sequence was filed on 15 May 2026.
  • Current net transaction value: $0.

Research use

  • This tells you what this filing adds before you inspect full transaction and derivative tables.
  • You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001580693 Primary reporting owner

WEISLER DION J

Relationship
Director
Address
168 THIRD AVENUE, WALTHAM
Signature
/s/ Melodie T. Morin, Attorney-in-Fact for Dion J. Weisler
Signature date
22 May 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

TMO transaction

Common Stock

Tax liability

Transaction value
Shares
-80
Change %
-1.6%
Price
$451.79*
Shares after
4,947
Date
20 May 2026
Ownership
Direct
TMO transaction

Common Stock

Award

Transaction value
Shares
+499
Change %
+10%
Price
$0.000000*
Shares after
5,446
Date
20 May 2026
Ownership
Direct
* marks a reported price that did not pass the local price check.
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