Express Scripts Schedules Fourth Quarter Earnings Release and Conference Call.

ST. LOUIS -- Express Scripts, Inc. (Nasdaq: ESRX), one of the largest pharmacy benefit management companies in North America, will report its fourth quarter 2006 results and comment on its 2007 earnings guidance prior to the market opening on Thursday, February 8, 2007. Express Scripts will hold its quarterly conference call to discuss these results on that same day, beginning at 9:00 a.m. Eastern Time (8:00 a.m. Central Time).

The conference call can be accessed by dialing [phone] (U.S. dial-in) or [phone] (international dial-in), conference code 7842745. The Company will webcast the call to all interested parties through the investor relations section of its website: www.express-scripts.com. Please see the website for details on how to access the webcast.

A replay of the conference call will be available through February 22, 2007 and can be accessed by dialing [phone] (U.S. dial-in) or [phone] (international dial-in), conference code 7842745. The replay will also be available at the Express Scripts website, www.express-scripts.com.

Express Scripts, Inc. is one of the largest PBM companies in North America, providing PBM services to over 50 million members through thousands of client groups, including managed-care organizations, insurance carriers, employers, third-party administrators, public sector, and union-sponsored benefit plans.

Express Scripts provides integrated PBM services, including network-pharmacy claims processing, home delivery services, benefit-design consultation, drug-utilization review, formulary management, disease management, and medical- and drug-data analysis services. The Company also distributes a full range of injectable and infusion biopharmaceutical products directly to patients or their physicians, and provides extensive cost-management and patient-care services.

Express Scripts is headquartered in St. Louis, Missouri. More information can be found at http://www.express-scripts.com, which includes expanded investor information and resources.