Merck director Paul J. Diaz reports share holdings

Merck & Co., Inc. (MRK) director Paul J. Diaz reported 200 shares of Common Stock held directly and 96 shares held indirectly through his revocable trust, with both holdings dated November 1, 2026.

Available on EDGAR 11/03/2026 - 02:40 PM EST Accepted by SEC EDGAR 11/03/2026 - 02:40 PM EST Learn about SEC filing dates

Rhea-AI Filing Summary

Merck & Co., Inc. (MRK) director Paul J. Diaz reported 200 shares of Common Stock held directly and 96 shares held indirectly through his revocable trust, with both holdings dated November 1, 2026.

Insider Trade Summary

Holdings reported, no transactions

Holdings

Insider DIAZ PAUL J

Role Director

Type	Security	Shares	Price	Value
Holding	Common Stock	--	--	--
Holding	Common Stock	--	--	--

Holdings: Common Stock — 200 shares (Direct); Common Stock — 96 shares (Indirect, By Reporting Person?s Revocable Trust)

Key Figures

Direct Common Stock holdings: 200 shares Indirect holdings through revocable trust: 96 shares

2 metrics

Direct Common Stock holdings 200 shares Dated November 1, 2026

Indirect holdings through revocable trust 96 shares Dated November 1, 2026

Key Terms

Revocable Trust

1 terms

Revocable Trust financial

"By Reporting Person’s Revocable Trust"

A revocable trust is a legal arrangement where the person who creates it keeps control and can change or cancel the trust at any time, while naming who will manage and receive the assets later. Think of it like a flexible folder for your investments and property that can be relabeled or reworked as circumstances change; it matters to investors because it determines how ownership is recorded, how easily assets transfer on incapacity or death, and whether holdings bypass public probate proceedings.

FAQ

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

How many MRK shares did director Paul J. Diaz report holding?

Paul J. Diaz reported 200 shares held directly and 96 shares held indirectly through his revocable trust, both dated November 1, 2026.

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

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SEC Form 3

FORM 3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0104
Estimated average burden
hours per response:			0.5

1. Name and Address of Reporting Person^*

DIAZ PAUL J

(Last) (First) (Middle)

126 EAST LINCOLN AVENUE

(Street)

RAHWAY NEW JERSEY 07065

(City) (State) (Zip)

UNITED STATES

(Country)

2. Date of Event Requiring Statement (Month/Day/Year)
11/01/2026

3. Issuer Name and Ticker or Trading Symbol
Merck & Co., Inc. [ MRK ]

3a. Foreign Trading Symbol

5. If Amendment, Date of Original Filed (Month/Day/Year)

4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Beneficially Owned
1. Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)
Common Stock	200	D
Common Stock	96	I	By Reporting Person?s Revocable Trust

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

Remarks:

See Exhibit 24 - Power of Attorney.

	/s/ Kelly Grez, as Attorney-in-Fact for Paul J. Diaz	11/03/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 5 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 3: SEC 1473 (03-26)