Investor plans sale of 6,400 common shares

An MRK shareholder has filed a notice of intent to sell 6,400 shares of common stock, with an aggregate market value of $765,920, through Morgan Stanley Smith Barney LLC on 02/04/2026 on the NYSE.

Accepted by SEC EDGAR 02/04/2026 - 04:38 PM EST Learn about SEC filing dates

Rhea-AI Filing Summary

An MRK shareholder has filed a notice of intent to sell 6,400 shares of common stock, with an aggregate market value of $765,920, through Morgan Stanley Smith Barney LLC on 02/04/2026 on the NYSE.

The shares to be sold were acquired mainly through restricted stock vesting under a registered plan on several dates in 2024 and through the exercise of 4,000 options on 02/04/2026. The issuer had 2,482,022,536 shares outstanding at the time referenced.

FAQ

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

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

The filing discloses a plan to sell 6,400 shares of MRK common stock with an aggregate market value of $765,920. The sale is expected to occur on 02/04/2026 through Morgan Stanley Smith Barney LLC on the NYSE.

How many MRK shares are planned to be sold and at what value?

The shareholder plans to sell 6,400 MRK common shares with an aggregate market value of $765,920. This amount is listed under the securities information section, alongside details of the broker and the NYSE as the trading venue.

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

The shares were acquired mainly through restricted stock vesting under a registered plan on multiple dates in 2024 and through the exercise of options on 02/04/2026. Each acquisition entry includes the date, amount of securities acquired, and payment details.

What does the filing say about MRK shares outstanding?

The document reports 2,482,022,536 shares of common stock outstanding for the issuer. This figure provides context for the planned sale of 6,400 shares, indicating the relative size of the proposed transaction within the total share base.

Which broker will handle the planned MRK share sale under Rule 144?

The planned sale will be handled by Morgan Stanley Smith Barney LLC Executive Financial Services, located at 1 New York Plaza, 8th Floor, New York, NY 10004. The filing also identifies the NYSE as the securities exchange for the transaction.

Does the MRK Rule 144 filer make any representation about non-public information?

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

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

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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	0002003375
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	MERCK & CO., INC.
SEC File Number	001-06571
Address of Issuer	126 East Lincoln Avenue Rahway NEW JERSEY 07065
Phone	(732) 594-4000
Name of Person for Whose Account the Securities are To Be Sold	DALTON SMART
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	Morgan Stanley Smith Barney LLC Executive Financial Services 1 New York Plaza 8th Floor New York NY 10004	6400	765920.00	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	01/22/2024	Restricted stock vesting under a registered plan	Issuer			639	01/22/2024	Not Applicable
Common	05/03/2024	Restricted stock vesting under a registered plan	Issuer			1201	05/03/2024	Not Applicable
Common	02/04/2026	Exercise of options under a registered plan	Issuer			4000	02/04/2026	Not Applicable
Common	05/02/2024	Restricted stock vesting under a registered plan	Issuer			250	05/02/2024	Not Applicable
Common	05/04/2024	Restricted stock vesting under a registered plan	Issuer			310	05/04/2024	Not Applicable

* 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	02/04/2026
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/ Dalton Smart
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)