MRK insider plans sale of 20,784 shares

MRK executive Richard Robert DeLuca Jr. filed a notice to sell up to 20,784 shares of common stock through Morgan Stanley Smith Barney LLC Executive Financial Services, with an aggregate value of $2,710,950.65, to be sold on or after 08/10/2026 on the NYSE.

Rhea-AI Filing Summary

MRK executive Richard Robert DeLuca Jr. filed a notice to sell up to 20,784 shares of common stock through Morgan Stanley Smith Barney LLC Executive Financial Services, with an aggregate value of $2,710,950.65, to be sold on or after 08/10/2026 on the NYSE.

The filing also reports a prior sale of 6,050 common shares on 08/06/2026 for total proceeds of $788,772.63.

Key Figures

Shares proposed for sale: 20,784 shares Aggregate value of proposed sale: $2,710,950.65 Recent shares sold: 6,050 shares +2 more

5 metrics

Shares proposed for sale 20,784 shares Common stock to be sold on or after 08/10/2026

Aggregate value of proposed sale $2,710,950.65 Total market value of 20,784 common shares

Recent shares sold 6,050 shares Common stock sold on 08/06/2026 during past 3 months

Value of recent sale $788,772.63 Total proceeds from 6,050 common shares sold on 08/06/2026

Planned sale date 08/10/2026 Date associated with proposed 20,784-share sale on NYSE

Key Terms

Form 144, Restricted Stock Vesting Under a Registered Plan, Executive Financial Services, Securities Sold During The Past 3 Months

4 terms

Form 144 regulatory

"144: Securities To Be Sold"

Form 144 is a document that investors must file with the government when they plan to sell a large number of shares of a company's stock. It helps ensure transparency so everyone knows how many shares are being sold and when, which can impact the stock's price.

Restricted Stock Vesting Under a Registered Plan financial

"Common | 02/22/2016 | Restricted Stock Vesting Under a Registered Plan"

Executive Financial Services financial

"Morgan Stanley Smith Barney LLC Executive Financial Services 1 New York Plaza"

Securities Sold During The Past 3 Months regulatory

"144: Securities Sold During The Past 3 Months"

FAQ

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

What insider transaction did MRK report in this Form 144 filing?

The filing reports that Richard Robert DeLuca Jr. intends to sell up to 20,784 MRK common shares through Morgan Stanley Smith Barney LLC Executive Financial Services, with an aggregate value of $2,710,950.65 on or after 08/10/2026.

How many MRK shares are proposed to be sold and what is their value?

The notice covers up to 20,784 MRK common shares with an aggregate market value of $2,710,950.65. These shares are to be sold on or after 08/10/2026 on the NYSE through Morgan Stanley Smith Barney LLC Executive Financial Services.

What MRK stock sales occurred in the 3 months before this Form 144?

During the prior three months, 6,050 MRK common shares were sold on 08/06/2026 for total proceeds of $788,772.63. This historical sale is listed alongside the newly proposed 20,784-share sale.

Who is the insider associated with this MRK Form 144 filing?

The filing lists Richard Robert DeLuca Jr., with an address in Rahway, NJ, as the reporting person. It details his planned sale of 20,784 MRK common shares and a prior sale of 6,050 shares within the last three months.

Through which broker will the MRK shares be sold under this Form 144?

The proposed sale of 20,784 MRK common shares will be executed through Morgan Stanley Smith Barney LLC Executive Financial Services at 1 New York Plaza, 8th Floor, New York, NY 10004, with the securities listed on the NYSE.

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

Accepted by SEC EDGAR 08/10/2026 - 04:43 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	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	20784	2710950.65	2467171638	08/10/2026	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	02/22/2016	Restricted Stock Vesting Under a Registered Plan	Issuer			11332	02/22/2016	Not Applicable
Common	02/23/2015	Restricted Stock Vesting Under a Registered Plan	Issuer			3351	02/23/2015	Not Applicable
Common	02/27/2017	Restricted Stock Vesting Under a Registered Plan	Issuer			3651	02/27/2017	Not Applicable
Common	05/02/2015	Restricted Stock Vesting Under a Registered Plan	Issuer			2450	05/02/2015	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

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
RICHARD ROBERT DELUCA JR 126 East Lincoln Avenue Rahway NJ 07065	Common	08/06/2026	6050	788772.63

144: Remarks and Signature

Remarks
Date of Notice	08/10/2026
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)