This excerpt taken from the STT DEF 14A filed Mar 13, 2006.
Corporate achievement of objectively determinable performance goals established by the Committee determines whether, and the extent to which, a participant earns his or her award. The goals are based on any or any combination of the following determined on a consolidated basis or on the basis of one or more divisions, subsidiaries or business units: earnings or earnings per share, return on equity, total shareholder return, revenue, market share, quality/service, organizational development, strategic initiatives, risk control, operating leverage, or expense. No payments under an award will be made under the SEAIP unless the performance goals are met or exceeded. Once established for an award period, performance goals may not be modified, except that (i) the Committee may provide in advance for automatic and objectively determinable adjustments to reflect events (for example, but without limitation, acquisitions or dispositions, changes in accounting principles or interpretations, impairment charges) occurring during the year that affect the applicable performance measure, and (ii) performance measures determined on a per-share basis will automatically be adjusted to reflect stock splits, stock dividends, reverse stock splits and similar changes to capitalization.