[Form 4] Thermo Fisher Scientific, Inc. Insider Trading Activity

Rhea-AI Filing Summary

Thermo Fisher Scientific insider transaction: This Form 4 shows Lisa P. Britt, Sr. VP and Chief HR Officer, reported four dispositions of Thermo Fisher common stock on 08/28/2025. Each line records a transaction code "F" disposing of 81.229, 87.514, 96.7, and 63.339 shares at $489.74 per share. The reported beneficially owned share totals after each disposition are 16,142.357, 16,054.843, 15,958.143, and 15,894.804 shares, respectively. The form is signed by an attorney-in-fact on behalf of Ms. Britt on 09/02/2025. The filing is a routine Section 16 disclosure documenting insider sales; no derivative transactions or additional explanatory text are provided.

Positive

• Transparent disclosure: The Form 4 provides clear dates, prices, share amounts, and post-transaction beneficial ownership.
• Proper execution: The filing is signed by an attorney-in-fact, indicating formal completion and submission.

Negative

• Insider dispositions: Ms. Britt sold a total of 328.782 shares on 08/28/2025, decreasing her reported holdings.
• No explanatory note: The filing does not state whether sales were under a pre-arranged plan or the reason for the dispositions.

Insights

Financial Analyst

TL;DR: Routine insider sales by a senior executive; small incremental reductions in holdings documented at market price.

The filing reports four non-derivative dispositions executed on a single date at a uniform price of $489.74, reducing reported beneficial ownership from 16,142.357 to 15,894.804 shares across the sequence. The transactions use transaction code "F" and contain no accompanying explanatory note. For investors, this is a transparent, routine Section 16 disclosure that documents selling activity but does not on its face provide context such as plan-based sales, personal liquidity needs, or changes to employment status. No derivatives, option exercises, or new beneficial ownership increases are reported.

Corporate Governance Expert

TL;DR: Compliance filing appears complete and timely; sale details are clearly reported but lack commentary on the sales' authorization.

The Form 4 is properly executed by an attorney-in-fact and lists the reporter's relationship to the issuer as Sr. VP and Chief HR Officer. It discloses four discrete disposals under code "F" and shows the resulting beneficial ownership after each line. From a governance perspective, the form meets disclosure requirements by providing date, code, price, and post-transaction holdings. The absence of an explanatory remark or indication of a trading plan means readers cannot determine whether the sales were pursuant to a Rule 10b5-1 plan or other pre-arranged program.

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Britt Lisa P.

(Last) (First) (Middle)

168 THIRD AVENUE

(Street)

WALTHAM MA 02451

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
THERMO FISHER SCIENTIFIC INC. [ TMO ]

5. 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

3. Date of Earliest Transaction (Month/Day/Year)
08/28/2025

4. 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 Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	08/28/2025		F		81.229	D	$489.74	16,142.357	D
Common Stock	08/28/2025		F		87.514	D	$489.74	16,054.843	D
Common Stock	08/28/2025		F		96.7	D	$489.74	15,958.143	D
Common Stock	08/28/2025		F		63.339	D	$489.74	15,894.804	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

	/s/ Melodie T. Morin, Attorney-in-Fact for Lisa P. Britt	09/02/2025
	** 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 4 (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).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

What did Thermo Fisher (TMO) insider Lisa P. Britt report on Form 4?

The Form 4 reports four dispositions of common stock on 08/28/2025, totaling 328.782 shares sold at $489.74 per share.

How many shares did Lisa P. Britt own after the reported transactions?

The filing lists sequential post-transaction beneficial ownership amounts of 16,142.357, 16,054.843, 15,958.143, and 15,894.804 shares.

Were any derivative securities reported in this Form 4 for TMO?

No. Table II for derivative securities contains no reported transactions or holdings in this filing.

Who signed the Form 4 for Lisa P. Britt and when?

The form was signed by Melodie T. Morin, Attorney-in-Fact for Lisa P. Britt on 09/02/2025.

Does the filing indicate the sales were made under a 10b5-1 plan?

The filing does not include any explanatory text or checkbox indicating the transactions were made pursuant to a 10b5-1 trading plan.

What transaction code is used and what does it show?

Each disposition line uses transaction code "F" as reported in the form; the filing does not provide further explanation of the code within its text.