Thermo Fisher (NYSE: TMO) holder Marc Casper plans another stock sale

Rhea-AI Filing Summary

THERMO FISHER SCIENTIFIC INC. (TMO) is the issuer for a proposed sale of common stock reported under Rule 144 for the account of Marc N. Casper. The notice lists an intended sale of 10,000 shares of common stock, to be acquired via a stock option exercise and sold for cash on 08/21/2026 through Fidelity Brokerage Services LLC on the NYSE. The securities table shows an approximate aggregate market value of $6,269,123.21 for this 10,000-share position. The filing also details several common stock sales by Marc N. Casper and Floral Park Associates Inc. during the prior three months, each with trade dates, share amounts, and total dollar proceeds, and notes that Marc N. Casper is an authorized individual and stakeholder for the Floral Park Associates Inc. account.

Key Figures

Shares to be sold: 10,000 shares Aggregate market value of 10,000-share position: $6,269,123.21 Sale 08/05/2026 by Marc N. Casper: 10,000 shares for $5,752,296.00 +5 more

8 metrics

Shares to be sold 10,000 shares Common stock planned Rule 144 sale for Marc N. Casper on 08/21/2026

Aggregate market value of 10,000-share position $6,269,123.21 Securities information section tied to the planned 10,000-share sale

Sale 08/05/2026 by Marc N. Casper 10,000 shares for $5,752,296.00 Securities sold during the past 3 months

Sale 08/06/2026 by Marc N. Casper 10,000 shares for $5,744,685.00 Securities sold during the past 3 months

Sale 08/20/2026 by Marc N. Casper 10,000 shares for $6,292,653.00 Securities sold during the past 3 months

Sale 08/05/2026 by Floral Park Associates Inc 5,000 shares for $2,876,145.43 Securities sold during the past 3 months

Sale 08/06/2026 by Floral Park Associates Inc 5,000 shares for $2,872,267.69 Securities sold during the past 3 months

Sale 08/07/2026 by Floral Park Associates Inc 4,608 shares for $2,700,817.75 Securities sold during the past 3 months

Key Terms

Rule 144, stock option exercise, attorney-in-fact

3 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.

stock option exercise financial

"Common | 08/21/2026 | 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.

attorney-in-fact regulatory

"as attorney-in-fact for Marc N. Casper"

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 Form 144 filed for THERMO FISHER SCIENTIFIC INC. (TMO) disclose?

It discloses a planned Rule 144 sale of 10,000 shares of Thermo Fisher Scientific common stock for the account of Marc N. Casper, to be sold for cash on 08/21/2026 after a stock option exercise, along with prior three‑month sale history.

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

The notice states that 10,000 shares of Thermo Fisher Scientific common stock are to be sold. These shares are tied to a stock option exercise with an intended sale date of 08/21/2026 for cash.

What is the approximate value of the TMO shares covered by the planned sale?

For the 10,000-share position, the filing shows an aggregate market value of approximately $6,269,123.21. This figure appears in the securities information section associated with the proposed Rule 144 sale through Fidelity Brokerage Services LLC.

Who is the selling security holder in the Thermo Fisher Scientific (TMO) Form 144?

The selling security holder is Marc N. Casper. The filing also references sales from the account of Floral Park Associates Inc., noting that Marc N. Casper is an authorized individual and account stakeholder for that account.

What recent sales of TMO stock by Marc N. Casper are listed in the Form 144?

The filing lists multiple common stock sales by Marc N. Casper, including 10,000 shares on 08/05/2026 for $5,752,296.00, 10,000 shares on 08/06/2026 for $5,744,685.00, and 10,000 shares on 08/20/2026 for $6,292,653.00, among other smaller trades.

What sales from Floral Park Associates Inc. related to TMO are disclosed?

Floral Park Associates Inc. is reported to have sold Thermo Fisher Scientific common stock, including 5,000 shares on 08/05/2026 for $2,876,145.43, 5,000 shares on 08/06/2026 for $2,872,267.69, and 4,608 shares on 08/07/2026 for $2,700,817.75.

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Available on EDGAR 08/21/2026 - 04:41 PM Accepted by SEC EDGAR 08/21/2026 - 04:40 PM 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	0001216055
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	CASPER MARC N
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
Relationship to Issuer	Director

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	10000	6269123.21	369747286	08/21/2026	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	08/21/2026	Stock Option Exercise	Issuer			10000	08/21/2026	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
Marc N. Casper 168 Third Avenue Waltham MA 02451	Common	08/05/2026	10000	5752296.00
Floral Park Associates Inc 168 Third Avenue Waltham MA 02451	Common	08/05/2026	5000	2876145.43
Marc N. Casper 168 Third Avenue Waltham MA 02451	Common	08/06/2026	10000	5744685.00
Floral Park Associates Inc 168 Third Avenue Waltham MA 02451	Common	08/06/2026	5000	2872267.69
Marc N. Casper 168 Third Avenue Waltham MA 02451	Common	08/07/2026	275	161178.33
Floral Park Associates Inc 168 Third Avenue Waltham MA 02451	Common	08/07/2026	4608	2700817.75
Marc N. Casper 168 Third Avenue Waltham MA 02451	Common	08/20/2026	10000	6292653.00

144: Remarks and Signature

Remarks	In regards to sales in Securities Sold During the Past 3 Months from the Floral Park Associates Inc. account of Marc N. Casper is an authorized individual and account stakeholder.
Date of Notice	08/21/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	04/27/2026
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/ Adam Gehring, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for Marc N. Casper
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)