Thermo Fisher officer Britt proposes $2M share sale

Britt's reported prior sales included 5,850 shares on August 6 and 11,440 shares on August 19, 2026.

Rhea-AI Filing Summary

Thermo Fisher Scientific Inc. (TMO) officer Lisa P. Britt reported a proposed sale of 2,831 common shares, with an aggregate market value of $1,999,959.95 and an approximate sale date of October 28, 2026. Fidelity Brokerage Services LLC is listed as broker and NYSE as the exchange. Britt also reported sales of 5,850 shares for $3,393,000.00 on August 6, 2026, and 11,440 shares for $7,014,109.96 on August 19, 2026.

Key Figures

Proposed sale: 2,831 shares Aggregate market value: $1,999,959.95 Shares outstanding: 369,747,286 shares +4 more

7 metrics

Proposed sale 2,831 shares Thermo Fisher Scientific common shares

Aggregate market value $1,999,959.95 Shares listed for sale

Shares outstanding 369,747,286 shares Issuer share count shown in the transaction details

Reported shares sold 5,850 shares August 6, 2026

Reported sale value $3,393,000.00 August 6, 2026

Reported shares sold 11,440 shares August 19, 2026

Reported sale value $7,014,109.96 August 19, 2026

Key Terms

Rule 144, Restricted Stock Vesting, attorney-in-fact

3 terms

Rule 144 regulatory

"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

"Restricted Stock Vesting"

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.

attorney-in-fact technical

"as attorney-in-fact for Lisa Britt"

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

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

How many TMO shares is Lisa P. Britt proposing to sell?

Lisa P. Britt, an officer of Thermo Fisher Scientific Inc. (TMO), reported a proposed sale of 2,831 common shares, with an aggregate market value of $1,999,959.95 and an approximate sale date of October 28, 2026. Fidelity Brokerage Services LLC and NYSE are listed.

What recent TMO share sales did Lisa P. Britt report?

Britt reported selling 5,850 common shares for $3,393,000.00 on August 6, 2026, and 11,440 common shares for $7,014,109.96 on August 19, 2026.

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

See more from StockTitan in Google Search and AI answers. Adds StockTitan as a preferred source · opens Google

Add on Google Not now

Available on EDGAR 10/28/2026 - 04:46 PM EDT Accepted by SEC EDGAR 10/28/2026 - 04:45 PM EDT 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	0001676320
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	Britt Lisa P.
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	2831	1999959.95	369747286	10/28/2026	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	02/23/2021	Restricted Stock Vesting	Issuer			583	02/23/2021	Compensation
Common	02/25/2021	Restricted Stock Vesting	Issuer			729	02/25/2021	Compensation
Common	02/26/2021	Restricted Stock Vesting	Issuer			237	02/26/2021	Compensation
Common	02/28/2025	Restricted Stock Vesting	Issuer			931	02/28/2025	Compensation
Common	08/28/2025	Restricted Stock Vesting	Issuer			351	08/28/2025	Compensation

* 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
Lisa Britt 168 Third Avenue Waltham MA 02451	Common	08/06/2026	5850	3393000.00
Lisa Britt 168 Third Avenue Waltham MA 02451	Common	08/19/2026	11440	7014109.96

144: Remarks and Signature

Remarks
Date of Notice	10/28/2026
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 Lisa Britt
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)