Thermo Fisher (NYSE: TMO) HR chief sells 5,850 shares after option exercise

Rhea-AI Filing Summary

Thermo Fisher Scientific executive Lisa P. Britt, Sr. VP and Chief HR Officer, exercised stock options for 5850.0000 shares of common stock at an exercise price of $309.6300 per share on August 6, 2026, then sold 5850.0000 shares at $580.0000 per share the same day. The option, covering 5850.0000 shares and originally expiring on 2027-02-25, had vested in four equal installments from 2021 through 2024 and is now fully exercised with no remaining derivative position.

Insider Trade Summary

Exercise and Sale: 5,850 shares ($1.58M approx. pre-tax spread)

Exercise and Sale 3 txns

Insider Britt Lisa P.

Role Sr. VP and Chief HR Officer

Sold 5,850 shs ($3.39M)

Approx. gross sale proceeds $3.39M

Approx. exercise cost $1.81M

Approx. pre-tax spread $1.58M

Type	Security	Shares	Price	Value
Exercise	Stock Option (Right to Buy) F1	5,850	$0.00	$0.00
Exercise	Common Stock	5,850	$309.63	$1.81M
Sale	Common Stock	5,850	$580.00	$3.39M

Holdings After Transaction: Stock Option (Right to Buy) — 0 shares (Direct); Common Stock — 14,784.148 shares (Direct)

Footnotes (1)

1. F1. The option vested in four equal installments on February 25, 2021, 2022, 2023 and 2024.

Key Figures

Options exercised: 5850.0000 shares Exercise price: $309.6300 per share Shares sold: 5850.0000 shares +2 more

5 metrics

Options exercised 5850.0000 shares Stock options exercised for common stock on 2026-08-06 at $309.6300 per share

Exercise price $309.6300 per share Exercise price of stock options for 5850.0000 shares of common stock

Shares sold 5850.0000 shares Common shares sold on 2026-08-06 following option exercise

Sale price $580.0000 per share Price per share for sale of 5850.0000 Thermo Fisher common shares

Option expiration date 2027-02-25 Original expiration date of the stock option that was fully exercised

Key Terms

Stock Option (Right to Buy), derivative security, Senior Vice President and Chief HR Officer

3 terms

Stock Option (Right to Buy) financial

"Security title reported as Stock Option (Right to Buy) for 5850.0000 shares"

derivative security financial

"Transaction code M described as Exercise or conversion of derivative security"

A derivative security is a financial contract whose value comes from the price or performance of something else, such as a stock, bond, commodity, or market index. For investors it acts like an insurance policy or a wager: it can be used to protect against losses, lock in prices, or amplify gains and losses, so it can change a portfolio’s risk and potential return without owning the underlying asset directly.

Senior Vice President and Chief HR Officer financial

"Reporting person is Sr. VP and Chief HR Officer of Thermo Fisher Scientific"

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

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Form 4 Insider Transactions: What Each Field Means →

Available on EDGAR 08/07/2026 - 05:33 PM Accepted by SEC EDGAR 08/07/2026 - 05:32 PM Learn about SEC filing dates

FAQ

What insider transactions did Thermo Fisher (TMO) executive Lisa P. Britt report on August 6, 2026?

Lisa P. Britt reported exercising 5850.0000 stock options at $309.6300 per share and acquiring the same number of Thermo Fisher common shares, then selling 5850.0000 shares at $580.0000 per share on August 6, 2026.

At what price did Lisa P. Britt exercise her Thermo Fisher (TMO) stock options?

She exercised options for 5850.0000 shares of Thermo Fisher common stock at an exercise price of $309.6300 per share. These options were originally scheduled to expire on 2027-02-25 and had vested in four equal installments from 2021 through 2024.

How many Thermo Fisher (TMO) shares did Lisa P. Britt sell and at what price?

Lisa P. Britt sold 5850.0000 shares of Thermo Fisher common stock at $580.0000 per share on August 6, 2026. This sale followed her same-day exercise of stock options covering 5850.0000 underlying shares.

What happened to Lisa P. Britt’s Thermo Fisher (TMO) stock option grant in this filing?

The stock option grant for 5850.0000 shares, which vested in four annual installments from 2021 to 2024 and was due to expire on 2027-02-25, was fully exercised on August 6, 2026, leaving 0.0000 option shares outstanding.

Was Lisa P. Britt’s Thermo Fisher (TMO) trading activity under a Rule 10b5-1 plan?

The filing’s Rule 10b5-1 checkbox is not marked, indicating these transactions were not affirmatively reported as being made pursuant to a Rule 10b5-1 trading plan in this Form 4.

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 MASSACHUSETTS 02451

(City) (State) (Zip)

UNITED STATES

(Country)

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
08/06/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

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	08/06/2026		M		5,850	A	$309.63	20,634.148	D
Common Stock	08/06/2026		S		5,850	D	$580	14,784.148	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
Stock Option (Right to Buy)	$309.63	08/06/2026		M			5,850	(1)	02/25/2027	Common Stock	5,850	$0	0	D

Explanation of Responses:

1. The option vested in four equal installments on February 25, 2021, 2022, 2023 and 2024.

Remarks:

	/s/ Melodie T. Morin, Attorney-in-Fact for Lisa P. Britt	08/07/2026
	** 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.
* Form 4: SEC 1474 (03-26)