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  4. [Form 4] THERMO FISHER SCIENTIFIC INC. Insider Trading Activity

Thermo Fisher (NYSE: TMO) COO sells 400 shares under 10b5-1 plan

Filing Impact
(High)
Filing Sentiment
(Negative)
Form Type
4

Rhea-AI Filing Summary

Thermo Fisher Scientific Inc. President & COO Gianluca Pettiti sold 400 shares of Common Stock on July 27, 2026 at $565.00 per share in an open-market or private transaction. The sale was effected under a Rule 10b5-1 trading plan adopted on September 12, 2025, and left him with 24,650.832 directly owned shares.

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Insider Pettiti Gianluca
Role President & COO
Sold 400 shs ($226K)
Type Security Shares Price Value
Sale Common Stock F1 400 $565.00 $226K
Holdings After Transaction: Common Stock — 24,650.832 shares (Direct)
Footnotes (1)
  1. F1. The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on September 12, 2025.
Shares sold 400.0000 shares Common Stock sale on 2026-07-27
Sale price per share $565.0000 per share Price for the 400.0000 shares sold on 2026-07-27
Shares owned after transaction 24650.8320 shares Directly owned Common Stock following the sale
Rule 10b5-1 plan adoption date September 12, 2025 Adoption date of trading plan covering the reported sale
Net shares sold in filing 400 shares transactionSummary netSellShares for this Form 4
Rule 10b5-1 trading plan regulatory
"transactions were effected pursuant to a Rule 10b5-1 trading plan"
A Rule 10b5-1 trading plan is a pre-arranged schedule that allows company insiders to buy or sell stock at specific times, even if they have inside information. It helps prevent accusations of unfair trading by making these transactions look planned and transparent, rather than sneaky or illegal.
Sale in open market or private transaction market
"transaction code description: Sale in open market or private transaction"
Common Stock financial
"security_title: Common Stock reported for the transaction"
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.

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

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FAQ

What insider transaction did Thermo Fisher (TMO) report for Gianluca Pettiti?
Thermo Fisher reported that President & COO Gianluca Pettiti sold 400 shares of Common Stock on July 27, 2026 at $565.00 per share, leaving him with 24,650.832 shares directly owned.

Was the recent TMO insider sale by Gianluca Pettiti under a Rule 10b5-1 plan?
Yes. The filing states the sale was effected under a Rule 10b5-1 trading plan adopted by Gianluca Pettiti on September 12, 2025, indicating the transaction followed a pre-established trading arrangement.

How many Thermo Fisher (TMO) shares does Gianluca Pettiti own after the sale?
After the reported sale, Gianluca Pettiti directly owns 24,650.832 shares of Thermo Fisher Common Stock. This figure reflects his holdings immediately following the 400-share disposition on July 27, 2026.

What price did Gianluca Pettiti receive per TMO share in the July 27, 2026 sale?
Gianluca Pettiti sold his Thermo Fisher shares at an average price of $565.00 per share. The Form 4 describes the transaction code as a sale in open market or private transaction of Common Stock.

How many Thermo Fisher (TMO) shares did Gianluca Pettiti sell in this Form 4?
The Form 4 shows that Gianluca Pettiti sold 400.0000 shares of Thermo Fisher Common Stock. Following this transaction, his directly held stake is reported as 24,650.8320 shares.
SEC Form 4
FORM 4UNITED 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).
X
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*
Pettiti Gianluca
(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)
Director10% Owner
XOfficer (give title below)Other (specify below)
President & COO
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
07/27/2026		6. Individual or Joint/Group Filing (Check Applicable Line)
XForm 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)
CodeVAmount(A) or (D)Price
Common Stock07/27/2026S(1)400D$56524,650.832D
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)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Explanation of Responses:
1. The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on September 12, 2025.
Remarks:
/s/ Melodie T. Morin, Attorney-in-Fact for Gianluca Pettiti07/28/2026
** Signature of Reporting PersonDate
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