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

Jan 26, 2010

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Merck & Co. Inc. (MRK)
CIK: 0000310158
Period of Report: 2010-01-08

Reporting Person: CLARK RICHARD T (Chairman, Pres & CEO)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2010-01-08	Common Stock	A	46021	$37.72	Acquired	142512.9495	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock - 401(k) Plan	3101.6151	Indirect

Footnotes

F1: Distribution of net after tax shares of common stock on satisfaction of performance criteria for performance share units granted on 3/02/2007. Performance shares were paid out at 120 percent of target awards.

F2: Includes shares acquired and dividends earned through October 1, 2009 in the Merck & Co., Inc. Employee Savings and Security Plan, a 401(k) plan.