R. Alexandra Keith - Dec 31, 2023 Form 4 Insider Report for THERMO FISHER SCIENTIFIC INC. (TMO)

Role: Director
Signature: /s/ Melodie T. Morin, Attorney-in-Fact for R. Alexandra Keith
Stock symbol: TMO
Transactions as of: Dec 31, 2023
Transactions value $: $0
Form type: 4
Date filed: 1/3/2024, 04:12 PM
Previous filing: Dec 8, 2023
Next filing: Mar 5, 2024

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	TMO	Phantom Stock Units	Award		+58.9	+8.86%		723	Dec 31, 2023	Common Stock	58.9		Direct	F1, F2

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	Convertible into Common Stock on a 1-for-1 basis.
F2	Represents stock units credited to the Reporting Person's account as of December 31, 2023, at a price of $530.79 per unit pursuant to the Issuer's Deferred Compensation Plan for Directors (the "Plan"). Directors' retainers are deferred quarterly under the Plan as Common Stock units based on the closing price of the stock as of the quarter end. The shares are distributable as stock upon cessation of director service (for any reason) or a change of control.

Content

Convertible into Common Stock on a 1-for-1 basis.

Represents stock units credited to the Reporting Person's account as of December 31, 2023, at a price of $530.79 per unit pursuant to the Issuer's Deferred Compensation Plan for Directors (the "Plan"). Directors' retainers are deferred quarterly under the Plan as Common Stock units based on the closing price of the stock as of the quarter end. The shares are distributable as stock upon cessation of director service (for any reason) or a change of control.