Contact Information for Investors

Institutional Investors and Analysts should contact:

908-423-5881, Monday - Friday, 8:30 a.m. - 4 p.m., ET

Sign up for Email Alerts

Contact Information for Stockholders

Call 800-522-9114, Monday - Friday, 8 a.m. - 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 800-CALL-MRK (1-800-225-5675) for:

• Materials requests (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.

Request Mailed Materials

Transfer Agent

Wells Fargo Shareowner Services

Address for Registered Mail/Federal Express

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

Address for Regular Mail

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