MRK (MRK) insider Richard DeLuca details recent common stock sales

Rhea-AI Filing Summary

Richard Robert DeLuca Jr. filed a Form 144 relating to sales of common stock of issuer MRK, using Morgan Stanley Smith Barney LLC Executive Financial Services as broker. Disclosed prior 3‑month sales include 6,050 shares on 08/06/2026 for $788,772.63, 20,784 shares on 08/10/2026 for $2,710,950.65, and 12,837 shares on 08/11/2026 for $1,691,426.23. Earlier entries list restricted stock vesting under a registered plan.

Key Figures

Shares sold 08/06/2026: 6,050 shares Proceeds 08/06/2026: $788,772.63 Shares sold 08/10/2026: 20,784 shares +5 more

8 metrics

Shares sold 08/06/2026 6,050 shares Securities Sold During The Past 3 Months by Richard Robert DeLuca Jr

Proceeds 08/06/2026 $788,772.63 Aggregate proceeds for 6,050 common shares sold on 08/06/2026

Shares sold 08/10/2026 20,784 shares Securities Sold During The Past 3 Months by Richard Robert DeLuca Jr

Proceeds 08/10/2026 $2,710,950.65 Aggregate proceeds for 20,784 common shares sold on 08/10/2026

Shares sold 08/11/2026 12,837 shares Securities Sold During The Past 3 Months by Richard Robert DeLuca Jr

Proceeds 08/11/2026 $1,691,426.23 Aggregate proceeds for 12,837 common shares sold on 08/11/2026

Restricted stock vesting 02/09/2018 156 shares Restricted Stock Vesting Under a Registered Plan, issuer MRK

Restricted stock vesting 02/27/2018 11,543 shares Restricted Stock Vesting Under a Registered Plan, issuer MRK

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

"filed a Form 144 relating to sales of common stock"

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

"entries list restricted stock vesting under a registered plan"

Executive Financial Services financial

"Morgan Stanley Smith Barney LLC Executive Financial Services"

Securities Sold During The Past 3 Months regulatory

"listed in the Securities Sold During The Past 3 Months section"

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Available on EDGAR 08/12/2026 - 04:24 PM Accepted by SEC EDGAR 08/12/2026 - 04:23 PM Learn about SEC filing dates

FAQ

What does the Form 144 filing for MRK by Richard Robert DeLuca Jr. disclose?

It discloses that Richard Robert DeLuca Jr. filed a Form 144 for MRK common stock, listing recent sales and earlier restricted stock vesting under a registered plan, and identifies Morgan Stanley Smith Barney LLC Executive Financial Services as the broker.

How many MRK shares did Richard DeLuca Jr. sell on 08/11/2026 according to the Form 144?

On 08/11/2026, the filing lists a sale of 12,837 MRK common shares for total proceeds of $1,691,426.23, reported under the “Securities Sold During The Past 3 Months” section for Richard Robert DeLuca Jr.

What MRK stock sales on 08/10/2026 are reported for Richard DeLuca Jr.?

For 08/10/2026, the Form 144 reports a sale of 20,784 MRK common shares, with aggregate proceeds of $2,710,950.65, as part of the securities sold during the past three months by Richard Robert DeLuca Jr.

What earlier MRK stock sale on 08/06/2026 is included in this Form 144?

The filing includes a sale on 08/06/2026 of 6,050 MRK common shares for total proceeds of $788,772.63, listed in the “Securities Sold During The Past 3 Months” section for Richard Robert DeLuca Jr.

What restricted stock vesting events for MRK are referenced in the Form 144?

It references “Restricted Stock Vesting Under a Registered Plan” for MRK common stock on 02/09/2018 for 156 shares and on 02/27/2018 for 11,543 shares, both identified with the issuer as the source.

Which broker is associated with the MRK Form 144 filing by Richard DeLuca Jr.?

The broker listed is Morgan Stanley Smith Barney LLC Executive Financial Services, located at 1 New York Plaza, 8th Floor, New York, NY 10004, associated with MRK common stock in the Form 144 disclosure.

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	11699	1539992.02	2467171638	08/12/2026	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	02/09/2018	Restricted Stock Vesting Under a Registered Plan	Issuer			156	02/09/2018	Not Applicable
Common	02/27/2018	Restricted Stock Vesting Under a Registered Plan	Issuer			11543	02/27/2018	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	08/11/2026	12837	1691426.23
RICHARD ROBERT DELUCA JR 126 East Lincoln Avenue Rahway NJ 07065	Common	08/10/2026	20784	2710950.65
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

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)