MARK IV INDUSTRIES, INC. Prospectus Supplement dated May 8, 1998 to the Prospectus dated February 13, 1998 The Selling Holders table contained on pages 16-18 of the Prospectus is hereby amended and supplemented to amend certain information contained therein and to include additional Selling Holders as indicated in the following table: Number of Shares of Aggregate Principal Amount Common Stock Issuable of Notes Owned and that Upon Conversion of Notes Name of Selling Holder May Be Sold That May be Sold Bear, Stearns & Co. Inc. (1) $39,350,000 1,199,238 Forum Capital Markets LLC (2) 1,000,000 30,476 GLG Global Convertible Fund (2) 2,000,000 60,952 - ------------------------ (1) Amended Information. (2) Additional Selling Holder.