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The following tables summarize information about stock options outstanding and exercisable under the 1995 Plan, the 1995 Directors' Plan, the 1996 Plan, the Petrolsoft Plan and the 2001 Plan at June 30, 2003: 

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In August 2003, all employee stock options, with the exception of certain executive options, vested in full and became 100% exercisable, which resulted in a total of 8,356,882 exercisable shares immediately following the acceleration (see Note 20). 

## (d) Employee Stock Purchase Plans 

In October 1997, the Company's Board of Directors approved the 1998 Employee Stock Purchase Plan, under which the Board of Directors may grant stock purchase rights for a maximum of 1,000,000 shares through September 30, 2007. In December 2000, the shareholders voted to increase the number of shares eligible under the 1998 Employee Stock Purchase Plan to 3,000,000 shares. 

