SEC Form 4 · accession 0001216055-26-000006

THERMO FISHER SCIENTIFIC INC. · TMO

Statement of changes in beneficial ownership, as filed. Original on EDGAR ↗

Reporting owner

Marc N Casper

Officer — Chairman & CEO · Director

Period of report

Aug 5, 2026

Accepted (ET)

Aug 7, 2026 · 5:26 pm EDT

Rule 10b5-1 plan

yes — trade under a plan

Issuer CIK

0000097745

Table I — non-derivative securities

Security	Date	Code	Shares	Price	A/D	Owned after	D/I	Nature of ownership
Common Stock	Aug 5, 2026	M	10,000	$309.63	A	133,925	D
Common Stock^F2	Aug 5, 2026	S	157	$566.25	D	133,768	D
Common Stock^F3	Aug 5, 2026	S	130	$567.92	D	133,638	D
Common Stock^F4	Aug 5, 2026	S	105	$569.24	D	133,533	D
Common Stock	Aug 5, 2026	S	53	$569.76	D	133,480	D
Common Stock^F5	Aug 5, 2026	S	135	$571.49	D	133,345	D
Common Stock^F6	Aug 5, 2026	S	431	$573.08	D	132,914	D
Common Stock^F7	Aug 5, 2026	S	1,186	$574.03	D	131,728	D
Common Stock^F8	Aug 5, 2026	S	2,223	$574.98	D	129,505	D
Common Stock^F9	Aug 5, 2026	S	2,930	$576.05	D	126,575	D
Common Stock^F10	Aug 5, 2026	S	2,575	$576.82	D	124,000	D
Common Stock^F11	Aug 5, 2026	S	75	$577.56	D	123,925	D
Common Stock^F12	Aug 5, 2026	S	79	$566.26	D	14,529	I	By Floral Park Associates, Inc.
Common Stock^F3	Aug 5, 2026	S	66	$567.94	D	14,463	I	By Floral Park Associates, Inc.
Common Stock^F13	Aug 5, 2026	S	38	$569.13	D	14,425	I	By Floral Park Associates, Inc.
Common Stock^F14	Aug 5, 2026	S	40	$569.69	D	14,385	I	By Floral Park Associates, Inc.
Common Stock^F5	Aug 5, 2026	S	68	$571.50	D	14,317	I	By Floral Park Associates, Inc.
Common Stock^F6	Aug 5, 2026	S	216	$573.08	D	14,101	I	By Floral Park Associates, Inc.
Common Stock^F7	Aug 5, 2026	S	590	$574.03	D	13,511	I	By Floral Park Associates, Inc.
Common Stock^F8	Aug 5, 2026	S	1,113	$574.98	D	12,398	I	By Floral Park Associates, Inc.
Common Stock^F9	Aug 5, 2026	S	1,464	$576.05	D	10,934	I	By Floral Park Associates, Inc.
Common Stock^F10	Aug 5, 2026	S	1,289	$576.83	D	9,645	I	By Floral Park Associates, Inc.
Common Stock^F11	Aug 5, 2026	S	37	$577.56	D	9,608	I	By Floral Park Associates, Inc.

Table II — derivative securities

Security	Conv. / exercise price	Date	Code	Shares	A/D	Exercisable	Expires	Underlying	Underlying shares	Owned after	D/I
Stock Option (Right to Buy)^F15	$309.63	Aug 5, 2026	M	10,000	D	—	Feb 25, 2027	Common Stock	10,000	30,550	D

Explanation of responses

F1The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on April 27, 2026.
F10The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $576.48 to $577.42, inclusive.
F11The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $577.49 to $577.63, inclusive.
F12The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $565.86 to $566.63, inclusive.
F13The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $568.55 to $569.50, inclusive.
F14The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $569.55 to $569.76, inclusive.
F15The option vested in four equal installments on February 25, 2021, 2022, 2023, and 2024.
F2The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $565.86 to $566.63, 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) and (14) to this Form 4.
F3The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $567.42 to $568.36, inclusive.
F4The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $568.56 to $569.55, inclusive.
F5The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $571.18 to $572.03, inclusive.
F6The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $572.36 to $573.34, inclusive.
F7The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $573.45 to $574.42, inclusive.
F8The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $574.48 to $575.47, inclusive.
F9The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $575.48 to $576.47, inclusive.

Remarks

One of two Form 4's filed on August 7, 2026 for the reporting of transactions occurring on August 5 and August 6, 2026. The first Form 4 includes transactions occurring on August 5, 2026, and the second Form 4 includes transactions occurring on August 6, 2026. In aggregate, all transactions could not be included in the first Form 4 due to a limitation on the number of line items that can be included per table in a single Form 4.