. the 2000 plan provides for grants of options to key employees , directors , advisors and consultants to the company or its subsidiaries as either incentive or nonqualified stock options as determined by the company 2019s board of directors . up to 4900000 shares of common stock may be awarded under the 2000 plan and are exercisable at such times and subject to such terms as the board of directors may specify at the time of each stock option grant