This excerpt taken from the MRO DEF 14A filed Mar 13, 2007.
Vesting of 2004 Performance Awards
In 2004, the Committee granted performance shares to Officers with vesting based entirely on our relative TSR for the period January 1, 2004 through December 31, 2006. Per the terms of the grant, our relative TSR was measured against the three-year TSR for each of the member companies within the XOI on December 31, 2006.
In January 2007, the Committee approved the vesting of these performance shares. For the 2004 to 2006 performance period, we ranked second in total stockholder return among the XOI companies with a TSR of 212 percent. As a result of the second place ranking, the Committee vested 183 percent of the target number of shares awarded to each Officer in 2004, in accordance with the pre-established vesting matrix.