As a result of its acquisition of Red Brick Systems, Inc. (“Red Brick”) in December 1998, the Company assumed all outstanding Red Brick stock options which had been issued under Red Brick’s 1995 Stock Option Plan (including options granted under the predecessor 1991 Stock Option Plan) and Supplemental Stock Option Plan. Each Red Brick stock option so assumed is subject to the same terms and conditions as the original grant, except that each option was adjusted at a ratio of 0.6 shares of Informix Common Stock for each one share of Red Brick Common Stock, and the exercise price was adjusted by dividing the exercise price by 0.6.

As a result of its acquisition of Cloudscape, Inc. (“Cloudscape”) in October 1999, the Company assumed all outstanding Cloudscape stock options which had been issued under Cloudscape’s 1996 Equity Incentive Plan. Each Cloudscape stock option so assumed is subject to the same terms and conditions as the original grant, except that each option was adjusted at a ratio of approximately 0.56 shares of Informix Common Stock for each one share of Cloudscape Common Stock, and the exercise price was adjusted by dividing the exercise price by approximately 0.56.

Following is a summary of activity for all stock option plans for the three years ended December 31, 1999:

The following table summarizes information about options outstanding at December 31, 1999:

In connection with all stock option plans, 30,089,289 shares of Common Stock were reserved for issuance as of December 31, 1999, and 7,082,302 options were exercisable. At December 31, 1998, 31,869,993 shares of Common Stock were reserved for issuance, and 6,143,986 options were exercisable.