Shareholder plans sale of 37,685 common shares

A shareholder has filed a notice of proposed sale of 37,685 shares of common stock, with an aggregate market value of $4,557,024.71.

Accepted by SEC EDGAR 02/06/2026 - 04:35 PM EST Learn about SEC filing dates

Rhea-AI Filing Summary

A shareholder has filed a notice of proposed sale of 37,685 shares of common stock, with an aggregate market value of $4,557,024.71. The shares are expected to be sold on or about 02/06/2026 on the NYSE through Morgan Stanley Smith Barney LLC Executive Financial Services.

The securities to be sold were acquired as restricted stock vesting under a registered plan from the issuer on several dates in 2024, including 21,845 shares on 01/22/2024 and 13,766 shares on 05/04/2024. By signing the notice, the selling person represents they do not know of any undisclosed material adverse information about the issuer’s current or prospective operations.

FAQ

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What does this Form 144 filing for MRK disclose?

It discloses a planned sale of 37,685 common shares with an aggregate market value of $4,557,024.71. The shares are to be sold on or about 02/06/2026 on the NYSE through Morgan Stanley Smith Barney LLC.

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

The filing states that 37,685 shares of common stock are proposed to be sold. The aggregate market value of these shares is listed as $4,557,024.71, providing a sense of the transaction’s size relative to typical insider-related sales.

How were the MRK shares in this Form 144 acquired?

The shares were acquired as restricted stock vesting under a registered plan from the issuer. Vesting events occurred on multiple 2024 dates, including 21,845 shares on 01/22/2024 and 13,766 shares on 05/04/2024, with payment noted as not applicable.

When will the MRK shares in this Form 144 likely be sold?

The filing lists an approximate sale date of 02/06/2026. This indicates when the holder expects to begin selling the 37,685 common shares on the NYSE, subject to market conditions and applicable securities regulations.

Which broker is handling the planned MRK share sale in this Form 144?

The proposed sale will be handled by Morgan Stanley Smith Barney LLC Executive Financial Services. The broker’s address is given as 1 New York Plaza, 8th Floor, New York, NY 10004, and the shares are designated for trading on the NYSE.

What representation does the seller make in this MRK Form 144?

The seller represents that they do not know any material adverse information about the issuer’s current or prospective operations that has not been publicly disclosed. This representation is a standard part of the Form 144 notice language.

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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	0001421339
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	RICHARD ROBERT DELUCA JR.
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	37685	4557024.71	2482022536	02/06/2026	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	04/08/2024	Restricted stock vesting under a registered plan	Issuer			141	04/08/2024	Not Applicable
Common	01/22/2024	Restricted stock vesting under a registered plan	Issuer			21845	01/22/2024	Not Applicable
Common	05/04/2024	Restricted stock vesting under a registered plan	Issuer			13766	05/04/2024	Not Applicable
Common	07/09/2024	Restricted stock vesting under a registered plan	Issuer			228	07/09/2024	Not Applicable
Common	07/08/2024	Restricted stock vesting under a registered plan	Issuer			125	07/08/2024	Not Applicable
Common	01/22/2024	Restricted stock vesting under a registered plan	Issuer			1451	01/22/2024	Not Applicable
Common	04/05/2024	Restricted stock vesting under a registered plan	Issuer			129	04/05/2024	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	02/06/2026
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/ Robert R. DeLuca
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)