MBIA Webcast to Discuss Subprime RMBS and Related Exposures Scheduled for Thursday, August 2, at 9:30 A.M. Eastern Time

MBIA Inc. (NYSE: MBI) will host an interactive webcast on Thursday, August 2, 2007 at 9:30 a.m. (EDT) to present information and answer questions concerning MBIA’s subprime RMBS exposure, CDO exposure and related topics. The presentation for the webcast will be available on MBIA’s Web site at 9:00 a.m. on the morning of the event. The webcast will consist of a presentation and a listen-only question and answer session. Participants will have the ability to submit questions using a dialog box on the webcast screen. Questions may also be submitted in advance and during the call to subprimermbs@mbia.com. The dial-in number (for listen-only access) is (877) 694-4769 in the U.S. and (973) 582-2849 from outside the U.S. The conference call code is 9066756. The interactive webcast and presentation will be accessible at the following link: MBIA August 2, 2007 Subprime RMBS Webcast A recording of the webcast will be available on MBIA’s Web site approximately one hour after the completion of the webcast event. In addition, a telephone replay of the webcast will be available approximately one hour after the end of the event on August 2 and it will be available until 5:00 p.m. on August 16. The replay dial-in number is (877) 519-4471 in the U.S. or (973) 341-3080 from outside the U.S. The replay call code is also 9066756. MBIA Inc., through its subsidiaries, is a leading financial guarantor and provider of specialized financial services. MBIA's innovative and cost-effective products and services meet the credit enhancement, financial and investment needs of its public and private sector clients, domestically and internationally. MBIA Inc.'s principal operating subsidiaries, MBIA Insurance Corporation and MBIA UK Insurance Limited, have financial strength ratings of Triple-A from Moody's Investors Service, Standard & Poor's Ratings Services and Fitch Ratings. MBIA has offices in London, Madrid, Milan, New York, Paris, San Francisco, Sydney and Tokyo. Please visit MBIA's Web site at www.mbia.com.