Thermo Fisher officer plans $2.5M stock sale

Rhea-AI Filing Summary

THERMO FISHER SCIENTIFIC INC. (TMO) has a notice of proposed sale under Rule 144 filed on behalf of officer Gianluca Pettiti. The filing covers up to 4,133 shares of common stock, with an aggregate market value stated as $2,539,232.54 and 369,747,286 shares outstanding. Planned sales include 400 shares from restricted stock vesting dated February 23, 2024 and 3,733 shares from a stock option exercise dated August 31, 2026. The form also notes a prior sale of 400 shares on July 27, 2026 for $226,000.00.

Key Figures

Shares Covered by Rule 144 Notice: 4,133 shares Aggregate Market Value: $2,539,232.54 Shares Outstanding: 369,747,286 shares +3 more

6 metrics

Shares Covered by Rule 144 Notice 4,133 shares Total shares of THERMO FISHER SCIENTIFIC INC. common stock referenced in the Form 144

Aggregate Market Value $2,539,232.54 Aggregate market value of the 4,133 shares covered

Shares Outstanding 369,747,286 shares Common shares of THERMO FISHER SCIENTIFIC INC. outstanding

Restricted Stock Vesting Shares 400 shares Shares to be sold from restricted stock vesting dated February 23, 2024

Stock Option Exercise Shares 3,733 shares Shares to be sold from a stock option exercise dated August 31, 2026

Recent Sale Amount $226,000.00 Proceeds from the sale of 400 shares on July 27, 2026

Key Terms

Rule 144, Restricted Stock Vesting, Stock Option Exercise, Form 144, +1 more

5 terms

Rule 144 regulatory

"See the definition of "person" in paragraph (a) of Rule 144."

Rule 144 is a U.S. securities regulation that sets conditions under which restricted or insider-held shares can be legally resold to the public, such as required holding periods, availability of public information, limits on how much can be sold at once, and certain filing requirements. For investors it matters because it determines when previously locked-up shares can enter the market — like a release valve that can increase supply, affect share price, and signal insider intent.

Restricted Stock Vesting financial

"Common | 02/23/2024 | Restricted Stock Vesting | Issuer"

Restricted stock vesting is the timetable and conditions under which shares granted to employees or insiders become fully owned and can be sold, typically requiring continued work or meeting performance goals. It matters to investors because large blocks of shares can become tradable at once, which can change share supply and price, and because vesting aligns insiders’ incentives with the company’s long‑term performance—think of it like a timed unlock that both rewards and locks in key people.

Stock Option Exercise financial

"Common | 08/31/2026 | Stock Option Exercise | Issuer"

A stock option exercise is the act of using a previously granted right to buy shares of a company's stock at a specific, predetermined price by paying that price and receiving the shares. It matters to investors because exercising changes who owns the shares (which can dilute existing ownership), can trigger taxable events and shift potential gains or losses, and affects voting power and the company’s outstanding share count—like turning a voucher into an actual product that becomes part of circulating supply.

Form 144 regulatory

"144: Filer Information"

Form 144 is a document that investors must file with the government when they plan to sell a large number of shares of a company's stock. It helps ensure transparency so everyone knows how many shares are being sold and when, which can impact the stock's price.

attorney-in-fact regulatory

"as attorney-in-fact for Gianluca Pettiti"

An attorney-in-fact is the person or entity given legal authority through a power of attorney to act on behalf of another for specific tasks, such as signing documents, voting shares, or handling transactions. For investors, this matters because it lets a trusted representative make timely decisions or complete paperwork when the owner cannot, much like handing keys to someone to run errands on your behalf—so checks on scope and limits of that authority are important.

FAQ

What does the Form 144 filing disclose for THERMO FISHER SCIENTIFIC INC. (TMO)?

It discloses a planned sale under Rule 144 by officer Gianluca Pettiti of up to 4,133 shares of TMO common stock, including shares from restricted stock vesting and a stock option exercise, plus a prior sale of 400 shares for $226,000.

How many TMO shares are proposed to be sold under this Form 144?

The notice covers up to 4,133 shares of THERMO FISHER SCIENTIFIC INC. common stock, consisting of 400 shares from restricted stock vesting and 3,733 shares from a stock option exercise.

What is the stated market value of the TMO shares in this Form 144?

The Form 144 lists an aggregate market value of $2,539,232.54 for the 4,133 shares of THERMO FISHER SCIENTIFIC INC. common stock covered by the notice.

How many TMO shares are outstanding according to this Form 144?

The filing states that THERMO FISHER SCIENTIFIC INC. has 369,747,286 shares of common stock outstanding, providing context for the relative size of the proposed Rule 144 sale.

What prior TMO share sale is disclosed in the last 3 months?

The filing reports that Gianluca Pettiti sold 400 shares of THERMO FISHER SCIENTIFIC INC. common stock on July 27, 2026 for total proceeds of $226,000.00 during the past three months.

On which market is TMO common stock listed in this Form 144?

The Form 144 indicates that THERMO FISHER SCIENTIFIC INC. common stock is listed on the NYSE, which is the market referenced for the proposed Rule 144 sale.

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

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Available on EDGAR 08/31/2026 - 11:38 AM Accepted by SEC EDGAR 08/31/2026 - 11:37 AM Learn about SEC filing dates

Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK	0001844600
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	THERMO FISHER SCIENTIFIC INC.
SEC File Number	001-08002
Address of Issuer	168 THIRD AVENUE WALTHAM MASSACHUSETTS 02451
Phone	7816221000
Name of Person for Whose Account the Securities are To Be Sold	Pettiti Gianluca
See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.
Relationship to Issuer	Officer

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Common	Fidelity Brokerage Services LLC 900 Salem Street Smithfield RI 02917	4133	2539232.54	369747286	08/31/2026	NYSE

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Common	02/23/2024	Restricted Stock Vesting	Issuer			400	02/23/2024	Compensation
Common	08/31/2026	Stock Option Exercise	Issuer			3733	08/31/2026	Cash

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
Gianluca Pettiti 168 Third Avenue Waltham MA 02451	Common	07/27/2026	400	226000.00

144: Remarks and Signature

Remarks
Date of Notice	08/31/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	06/02/2026
ATTENTION:
The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.
Signature	/s/ Jennifer Ruchti, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for Gianluca Pettiti
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)