Contact Information for Investors

Institutional Investors and Analysts should contact:

908-423-5881 Monday-Friday 8:30AM - 4:00PM ET

Sign up for Email Alerts

Contact Information for Stockholders

Call 800-522-9114, Monday through Friday, 8 a.m. to 8 p.m., ET to:

• Verify your holdings
• Change your address
• Report lost or missing dividends
• Transfer stocks or change ownership
• Report lost stock certificates

Or write to:

Merck Shareowner Services

Wells Fargo Bank, N.A.

161 N. Concord Exchange

South St. Paul, MN 55075 1139

Merck News on Call

Call 1-800-CALL-MRK (1-800-225-5675) for:

• Materials requests (mailed or faxed)
• Most recent dividend or earnings information
• Recent news releases
• Information about our annual meeting of stockholders

This number is available 24 hours a day, 7 days a week.

Transfer Agent:

Wells Fargo Shareowner Services

Address for Registered Mail/Federal Express:

161 North,Concord Exchange,
South St Paul, MN 55075.

Address for Regular Mail:

P O Box 64856,
St Paul, MN 55164-0856.