Merck & Co., Inc. — Director's Dealing 2010

Oct 1, 2010

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Merck & Co. Inc. (MRK)
CIK: 0000310158
Period of Report: 2010-09-30

Reporting Person: REPRESAS CARLOS E (Director)

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2010-09-30	Phantom Stock	$	A	685.9549	Acquired		Common Stock (685.9549)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	1500.0000	Direct

Footnotes

F1: 1-for-1

F2: Phantom stock units are to be settled 100% in cash upon reporting person's termination of service in accordance with a distribution schedule elected pursuant to the terms of the Plan for Deferred Payment of Directors' Compensation.

F3: Holdings include shares acquired in dividend reinvestment transactions.