MARALDO DAVID R.

PrivateCIK: 2126478

Location

RAHWAY, NJ

MARALDO DAVID R. enters MERCK & CO., INC. with 26.18K shares plus derivative instruments

Holding both equity and derivatives at entry signals strong long-term conviction in the company.

Direct Indirect Derivatives

MARALDO DAVID R.

Filed: 5/4/2026ACC: 0000310158-26-000107

InsiderMARALDO DAVID R.CIK 2126478

→

IssuerMERCK & CO., INC.CIK 310158

Officer· EVP & Pres. MMD

Since May 2026

26.18K

Baseline shares

68% direct

17.82K

Direct ownership

1 position

48.51K

Derivative underlying

8 instruments

2

Security positions

8.36K indirect

Non-Derivative Holdings2

Common Stock - 401(k) Plan

Indirect

Shares owned8.36K

Common Stock

Direct

Shares owned17.82K

Total

17.82K direct·8.36K indirect26.18K

Security Title	Shares Owned	Ownership Type
Common Stock - 401(k) Plan	8.36K	Indirect
Common Stock	17.82K	Direct
Total	26.18K	17.82K direct·8.36K indirect

Derivative Holdings8

Stock Option (Right to Buy)

Direct

Underlying security

Common Stock

Underlying shares

9.71K

Shares owned

N/A

Exercise price

87.10

Expiration

—

Exercise window

—

Restricted Stock Unit

Direct

Underlying security

Common Stock

Underlying shares

581.00

Shares owned

N/A

Exercise price

Expiration

—

Exercise window

—

Stock Option (Right to Buy)

Direct

Underlying security

Common Stock

Underlying shares

9.46K

Shares owned

N/A

Exercise price

73.73

Expiration

—

Exercise window

—

Stock Option (Right to Buy)

Direct

Underlying security

Common Stock

Underlying shares

8.79K

Shares owned

N/A

Exercise price

129.22

Expiration

—

Exercise window

—

Stock Option (Right to Buy)

Direct

Underlying security

Common Stock

Underlying shares

8.99K

Shares owned

N/A

Exercise price

117.89

Expiration

—

Exercise window

—

Restricted Stock Unit

Direct

Underlying security

Common Stock

Underlying shares

2.36K

Shares owned

N/A

Exercise price

Expiration

—

Exercise window

—

Restricted Stock Unit

Direct

Underlying security

Common Stock

Underlying shares

552.00

Shares owned

N/A

Exercise price

Expiration

—

Exercise window

—

Stock Option (Right to Buy)

Direct

Underlying security

Common Stock

Underlying shares

8.06K

Shares owned

N/A

Exercise price

84.71

Expiration

—

Exercise window

—

Total

Underlying

48.51K

Owned

0.00

Security	Underlying	Exercise Price	Exercise Window	Expiration	Underlying Shares	Shares Owned
Stock Option (Right to Buy) Direct	Common Stock	87.10	—	—	9.71K	N/A
Restricted Stock Unit Direct	Common Stock		—	—	581.00	N/A
Stock Option (Right to Buy) Direct	Common Stock	73.73	—	—	9.46K	N/A
Stock Option (Right to Buy) Direct	Common Stock	129.22	—	—	8.79K	N/A
Stock Option (Right to Buy) Direct	Common Stock	117.89	—	—	8.99K	N/A
Restricted Stock Unit Direct	Common Stock		—	—	2.36K	N/A
Restricted Stock Unit Direct	Common Stock		—	—	552.00	N/A
Stock Option (Right to Buy) Direct	Common Stock	84.71	—	—	8.06K	N/A
Total					48.51K	0.00

MARALDO DAVID R. — Initial Ownership Disclosure (Form 3) Filed May 4, 2026 | Finecho