Hornbeck Offshore Services, Inc. Chairman, President and CEO Todd M. Hornbeck, will ring The Closing Bell at the New York Stock Exchange
on Friday, September 30, 2005 at 4:00 p.m. Eastern time. This event marks the pricing of the company's recent public stock offering and private placement of 6.125% senior notes that will raise approximately $290 million in aggregate gross proceeds for the Company. These combined proceeds will fund, in part, two new vessel construction programs announced on Monday, September 26, 2005. Mr. Hornbeck stated, "Hornbeck Offshore is a proud member of the New York Stock Exchange and believes it enhances our ability to raise growth capital at the lowest possible cost."