Planned sale of 41,997 MRK (NYSE: MRK) shares via Morgan Stanley

Rhea-AI Filing Summary

A holder of MRK common stock has filed a notice of proposed sale under Rule 144 for 41,997 shares. The shares have an aggregate market value of $5,023,311.57, and the planned sale date is February 4, 2026 on the NYSE.

The planned transaction would be executed through Morgan Stanley Smith Barney LLC Executive Financial Services. The shares were acquired on February 4, 2026 by exercising options under a registered plan, with the purchase price paid in cash on the same date.

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

144: Issuer Information

Name of Issuer

SEC File Number

Address of Issuer

Phone

Name of Person for Whose Account the Securities are To Be Sold

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

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	Morgan Stanley Smith Barney LLC Executive Financial Services 1 New York Plaza 8th Floor New York NY 10004	41997	5023311.57	2482022536	02/04/2026	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	02/04/2026	Exercise of options under a registered plan	Issuer			41997	02/04/2026	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

Nothing to Report

144: Remarks and Signature

Remarks

Date of Notice

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

ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)

FAQ

What does the MRK Form 144 filing disclose about planned share sales?

The filing discloses a planned Rule 144 sale of 41,997 MRK common shares. These shares have an aggregate market value of $5,023,311.57 and are expected to be sold on the NYSE on February 4, 2026.

How many MRK shares are outstanding in this Form 144 notice?

The notice states that 2,482,022,536 MRK common shares are outstanding. This figure provides context for the planned sale of 41,997 shares, showing the overall size of the company’s equity base relative to the proposed transaction.

How were the MRK shares in this Rule 144 filing acquired?

The shares were acquired on February 4, 2026 through the exercise of options under a registered plan. The filer paid for 41,997 shares in cash on the same date before planning the Rule 144 sale.

Which broker is handling the planned MRK share sale under Rule 144?

The planned sale will be handled by Morgan Stanley Smith Barney LLC Executive Financial Services. The broker’s listed address is 1 New York Plaza, 8th Floor, New York, NY 10004, and the intended trading venue is the NYSE.

What is the aggregate market value of MRK shares in this Form 144?

The filing reports an aggregate market value of $5,023,311.57 for the 41,997 MRK common shares to be sold. This value reflects the market price used in the notice for the proposed Rule 144 transaction.

Does the MRK Rule 144 filer make any representation about undisclosed information?

Yes. By signing the notice, the person for whose account the securities are to be sold represents that they do not know any material adverse information about MRK’s current or prospective operations that has not been publicly disclosed.