Thermo Fisher EVP disposes shares for tax withholding

Thermo Fisher Scientific Executive Vice President Michael D. Shafer reported three Form 4 transactions on common stock.

Rhea-AI Filing Summary

Thermo Fisher Scientific Executive Vice President Michael D. Shafer reported three Form 4 transactions on common stock. He disposed of approximately 816 shares through tax-withholding dispositions at a reported price of $521.11 per share to satisfy tax obligations. After these transactions, he directly owns about 22,557 shares of Thermo Fisher Scientific common stock.

Insider Trade Summary

Exercise Price or Tax Liability: 815.848 shares

Exercise Price or Tax Liability 3 txns

Insider Shafer Michael D

Role Executive Vice President

Type	Security	Shares	Price	Value
Exercise Price or Tax Liability	Common Stock	97.984	$521.11	$51K
Exercise Price or Tax Liability	Common Stock	466.204	$521.11	$243K
Exercise Price or Tax Liability	Common Stock	251.66	$521.11	$131K

Holdings After Transaction: Common Stock — 22,556.9546 shares (Direct)

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What did Thermo Fisher (TMO) executive Michael D. Shafer report in this Form 4?

Michael D. Shafer reported three Form 4 transactions disposing of common shares. These were tax-withholding dispositions tied to equity compensation, not open-market sales, and were executed at $521.11 per share, reflecting shares delivered to cover tax obligations.

How many Thermo Fisher (TMO) shares were disposed of for tax withholding?

Shafer disposed of approximately 816 Thermo Fisher shares across three transactions. All were coded "F" for payment of tax liability by delivering securities, indicating they were related to equity compensation rather than discretionary selling in the open market.

At what price were Michael D. Shafer’s Thermo Fisher (TMO) tax-withholding shares valued?

Each of Shafer’s tax-withholding dispositions used a reported price of $521.11 per share. This price is used for reporting the value of shares withheld or delivered to satisfy tax obligations on his underlying equity awards.

How many Thermo Fisher (TMO) shares does Michael D. Shafer own after these transactions?

Following the reported tax-withholding dispositions, Shafer directly owns about 22,557 shares of Thermo Fisher common stock. This figure reflects his remaining direct ownership after the shares were delivered to cover associated tax liabilities.

Does this Thermo Fisher (TMO) Form 4 show an open-market sale by Michael D. Shafer?

No. The Form 4 shows tax-withholding dispositions coded "F", meaning shares were delivered to pay exercise price or tax liabilities. This differs from an open-market sale, which would typically be coded as a straightforward sale transaction.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 03/02/2026 - 04:03 PM Learn about SEC filing dates

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^*

Shafer Michael D

(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)
	Executive Vice President

3. Date of Earliest Transaction (Month/Day/Year)
02/28/2026

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	02/28/2026		F		97.984	D	$521.11	23,274.8186	D
Common Stock	02/28/2026		F		466.204	D	$521.11	22,808.6146	D
Common Stock	02/28/2026		F		251.66	D	$521.11	22,556.9546	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 Michael D. Shafer	03/02/2026
	** 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.