Thermo Fisher director granted phantom stock units

WEISLER DION J reported acquisition or exercise transactions in this Form 4 filing.

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Rhea-AI Filing Summary

WEISLER DION J reported acquisition or exercise transactions in this Form 4 filing.

Thermo Fisher Scientific director Dion J. Weisler received a grant of 73.1 Phantom Stock Units. These derivative units are convertible into Common Stock on a 1-for-1 basis and were credited at a price of $513.03 per unit under the company’s Deferred Compensation Plan for Directors.

Following this award, Weisler holds a total of 2,790.99 Phantom Stock Units. According to the plan, the related shares of Common Stock are distributable after director service ends for any reason or upon a change of control.

Insider Trade Summary

Grant/Award: 73.1 shares

Grant/Award 1 txn

Insider WEISLER DION J

Role Director

Type	Security	Shares	Price	Value
Grant/Award	Phantom Stock Units	73.1	$0.00	$0.00

Holdings After Transaction: Phantom Stock Units — 2,790.99 contracts (Direct)

Footnotes (2)

F1. Convertible into Common Stock on a 1-for-1 basis.
F2. Represents stock units credited to the Reporting Person's account as of June?27, 2026, at a price of $513.03 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.

Key Figures

Phantom units granted: 73.1 units Units after transaction: 2,790.99 units Credit price per unit: $513.03 per unit +1 more

4 metrics

Phantom units granted 73.1 units Grant of Phantom Stock Units to director on June 27, 2026

Units after transaction 2,790.99 units Total Phantom Stock Units held following the grant

Credit price per unit $513.03 per unit Price used under Deferred Compensation Plan for Directors

Conversion ratio 1-for-1 into Common Stock Each Phantom Stock Unit convertible into one Common Share

Key Terms

Phantom Stock Units, Deferred Compensation Plan for Directors, Common Stock units, change of control

4 terms

Phantom Stock Units financial

"Represents stock units credited to the Reporting Person's account as of June 27, 2026"

Phantom stock units are company promises that pay a cash or stock-equivalent award tied to the firm’s share price or value growth, but they do not issue actual shares. Think of them as a bonus check that moves with the stock like a mirror rather than handing over an ownership slice. Investors care because these awards can affect a company’s future cash obligations, executive incentives and reported expenses without causing share dilution.

Deferred Compensation Plan for Directors financial

"pursuant to the Issuer's Deferred Compensation Plan for Directors (the "Plan")"

A deferred compensation plan for directors is an arrangement that lets board members postpone receiving part of their pay until a later date—often retirement or a set future time—so the money can grow or be paid under specified conditions. Think of it like directing a portion of your paycheck into a locked savings account that pays out later; investors care because it creates future cash or stock obligations, signals how the company motivates and retains leadership, and can affect shareholder value through timing of payouts or potential dilution.

Common Stock units financial

"Directors' retainers are deferred quarterly under the Plan as Common Stock units"

A common stock unit is a tradable ownership interest that represents one or more ordinary shares in a company, giving the holder a stake in profits, a claim on assets after creditors, and usually voting rights on corporate matters. For investors it matters because these units determine how much of the company you own, how much influence you have, and how returns or losses are shared—think of owning slices of a pie that can be increased or diluted by the company’s actions.

change of control financial

"The shares are distributable as stock upon cessation of director service (for any reason) or a change of control."

A change of control occurs when the ownership or management of a company shifts significantly, such as through a sale, merger, or acquisition, resulting in new leadership or ownership structure. This change can impact the company's direction and decision-making, which is important for investors because it may affect the company's stability, strategy, and future prospects.

FAQ

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

What insider transaction did Thermo Fisher (TMO) disclose for Dion J. Weisler?

Thermo Fisher disclosed that director Dion J. Weisler received 73.1 Phantom Stock Units as a grant. These units are part of his deferred compensation and convert into Common Stock on a one-for-one basis under the company’s director compensation plan.

How many Thermo Fisher phantom stock units does Dion J. Weisler hold after this grant?

After the latest grant, Dion J. Weisler holds 2,790.99 Phantom Stock Units. These units track Thermo Fisher’s Common Stock value and will be settled in shares when his board service ends or if a change of control occurs, according to the plan terms.

At what price were Dion J. Weisler’s new Thermo Fisher stock units credited?

The 73.1 Phantom Stock Units were credited at $513.03 per unit. That price reflects Thermo Fisher’s closing stock price at the quarter end used under the Deferred Compensation Plan for Directors to convert retainer amounts into stock units.

What are Phantom Stock Units in Thermo Fisher’s director compensation plan?

Phantom Stock Units are bookkeeping entries that mirror Thermo Fisher’s Common Stock value. Under the director deferred compensation plan, retainers are converted into these units, which later settle in actual shares when board service ends or if a change of control happens.

When will Dion J. Weisler receive Thermo Fisher shares for his Phantom Stock Units?

Shares corresponding to Weisler’s Phantom Stock Units are distributable as stock when his director service ceases for any reason or upon a change of control. Until then, the units remain as deferred compensation tied to Thermo Fisher’s Common Stock price performance.

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Accepted by SEC EDGAR 06/30/2026 - 05:19 PM EDT

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^*

WEISLER DION J

(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)

X	Director	10% Owner
	Officer (give title below)	Other (specify below)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
06/27/2026

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)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)

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)
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)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
Phantom Stock Units	⁽¹⁾	06/27/2026		A		73.1		⁽²⁾	⁽²⁾	Common Stock	73.1	⁽²⁾	2,790.99	D

Explanation of Responses:

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

2. Represents stock units credited to the Reporting Person's account as of June?27, 2026, at a price of $513.03 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.

	/s/ Melodie T. Morin, Attorney-in-Fact for Dion J. Weisler	06/30/2026
	** 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)

Source: View Original Filing on SEC EDGAR