SEC Form 3

FORM 3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person* Britt Lisa P. (Last) (First) (Middle) 168 THIRD AVENUE (Street) WALTHAM MA 02451 (City) (State) (Zip)	2. Date of Event Requiring Statement (Month/Day/Year) 06/16/2023	3. Issuer Name and Ticker or Trading Symbol THERMO FISHER SCIENTIFIC INC. [ TMO ]
		4. Relationship of Reporting Person(s) to Issuer (Check all applicable) Director 10% Owner X Officer (give title below) Other (specify below) Sr. VP and Chief HR Officer	5. If Amendment, Date of Original Filed (Month/Day/Year)
			6. Individual or Joint/Group Filing (Check Applicable Line) X Form filed by One Reporting Person Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Beneficially Owned
1. Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)
Common Stock	17,435	D

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Stock Option (Right to Buy)	03/07/2021	09/07/2024	Common Stock	8,445	$190.59	D
Stock Option (Right to Buy)	(1)	02/27/2025	Common Stock	5,900	$210.68	D
Stock Option (Right to Buy)	(2)	02/26/2026	Common Stock	8,475	$253.99	D
Stock Option (Right to Buy)	(3)	02/25/2027	Common Stock	5,850	$309.63	D
Stock Option (Right to Buy)	(4)	02/23/2028	Common Stock	4,600	$458.81	D
Stock Option (Right to Buy)	(5)	02/23/2030	Common Stock	4,316	$528.58	D
Stock Option (Right to Buy)	(6)	02/22/2031	Common Stock	3,996	$548.4	D

Explanation of Responses:

1. The option vested in four equal installments on February 27, 2019, 2020, 2021, and 2022.

2. The option vested in four equal installments on February 26, 2020, 2021, 2022, and 2023.

3. The options vest in four equal annual installments. Three-quarters of the shares vested on February 25, 2021, 2022 and 2023. The remaining one-quarter will vest on February 25, 2024.

4. The options vest in four equal annual installments. Two-quarters of the shares vested on February 23, 2022 and 2023, and the remaining two-quarters will vest on February 23, 2024 and 2025.

5. The options vest in four equal annual installments. One-quarter of the shares vested on February 28, 2023, and the remaining three-quarters will vest on February 28, 2024, 2025 and 2026.

6. The options vest in four equal annual installments on February 28, 2024, 2025, 2026, and 2027.

Remarks:

Exhibit List: Exhibit 24 - Confirming Statement

	/s/ Melodie T. Morin, Attorney-in-Fact for Lisa P. Britt	06/20/2023
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 5 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
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