Director at Thermo Fisher (NYSE: TMO) receives 499-share stock grant

Rhea-AI Filing Summary

Thermo Fisher Scientific director Nelson Chai received a stock grant of 499 shares of Common Stock. The shares were acquired at a stated price of $0.00 per share, indicating a compensation-related award rather than an open-market purchase. Following this grant, Chai directly holds 15,316 shares of Thermo Fisher Scientific Common Stock.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider Chai Nelson

Role null

Type	Security	Shares	Price	Value
Grant/Award	Common Stock	499	$0.00	--

Holdings After Transaction: Common Stock — 15,316 shares (Direct, null)

Footnotes (1)

Key Figures

Stock grant size: 499 shares Grant price: $0.00 per share Post-transaction holdings: 15,316 shares +1 more

4 metrics

Stock grant size 499 shares Common Stock grant to director Nelson Chai

Grant price $0.00 per share Reported transaction price for awarded shares

Post-transaction holdings 15,316 shares Total Common Stock directly held after grant

Transaction date 2026-05-20 Date of Common Stock grant

Key Terms

Form 4, Common Stock, grant/award acquisition, direct ownership

4 terms

Form 4 regulatory

"This insider transaction was reported on SEC Form 4."

Form 4 is a official document that company insiders, such as executives or major shareholders, file with regulators whenever they buy or sell company shares. It provides transparency about how those with inside knowledge are trading, helping investors see if insiders are confident in the company's prospects or may be selling for personal reasons. This information can influence investor decisions by revealing insiders' perspectives on the company's value.

Common Stock financial

"The transaction involved Thermo Fisher Scientific Common Stock."

Common stock represents ownership shares in a company, giving investors a stake in its success and a say in important decisions through voting rights. It is the most common type of stock traded on markets and can provide income through dividends, as well as potential for value growth. For investors, holding common stock means sharing in the company’s profits and risks.

grant/award acquisition financial

"The transaction is classified as a grant/award acquisition."

direct ownership financial

"The filing reports the shares as direct ownership (code D)."

Form 4 Insider Transactions: What Each Field Means →

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^*

Chai Nelson

(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)
05/20/2026

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	05/20/2026		A		499	A	$0	15,316	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:

Remarks:

Exhibit List: Exhibit 24 - Power of Attorney

	/s/ Melodie T. Morin, Attorney-in-Fact for Nelson Chai	05/22/2026
	** 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)

FAQ

What insider transaction did Thermo Fisher Scientific (TMO) director Nelson Chai report?

Nelson Chai reported receiving a grant of 499 shares of Thermo Fisher Scientific Common Stock. The award was recorded at a price of $0.00 per share, indicating a compensation-related stock grant rather than an open-market purchase of TMO shares.

How many Thermo Fisher Scientific (TMO) shares does Nelson Chai hold after this Form 4?

After the reported grant, Nelson Chai directly holds 15,316 shares of Thermo Fisher Scientific Common Stock. This total reflects his position following the 499-share award and helps show the scale of this grant relative to his overall holdings.

Was the Thermo Fisher Scientific (TMO) insider transaction a stock purchase or a grant?

The transaction was a grant or award acquisition of 499 shares, coded as “A” on Form 4. The reported price of $0.00 per share confirms it was a compensation-related grant, not an open-market stock purchase of Thermo Fisher Scientific shares.

Does the Thermo Fisher Scientific (TMO) Form 4 show any stock sales by Nelson Chai?

The Form 4 shows no stock sales by Nelson Chai. It reports a single transaction classified as an acquisition via grant or award of 499 shares, with no dispositions or derivative exercises included in this particular filing.

Is the Thermo Fisher Scientific (TMO) insider grant held directly or indirectly by Nelson Chai?

The 499-share grant is reported as directly owned by Nelson Chai. The ownership code is “D” for direct ownership, and there is no separate entity or indirect ownership structure indicated for this specific transaction.