X0202 4/A 2007-03-15 2007-03-19 0 0001051431 HORIZON OFFSHORE INC HOFF 0001325516 MOGEL RONALD D 2500 CITY WEST BLVD., SUITE 2200 HOUSTON TX 77042 0 1 0 0 Vice President and CFO Common Stock 2007-03-15 4 A 0 22084 0 A 24084 D This amendment corrects the number of shares of restricted stock granted to the Reporting Person. Of the shares of restricted stock granted, 12,962 shares vested on the date of grant, 5,474 will vest on the first anniversary of the date of grant, and 1,824 will vest on each of the second and third anniversaries of the date of grant. William B. Masters, on behalf of Ronald D. Mogel 2007-04-13