Contra Costa California Stock Option Plan is a comprehensive stock option program that offers various types of stock options, catering to different needs and goals of employees and participants. This plan provides for the grant of Incentive Stock Options, Nonqualified Stock Options, and Exchange Options. Incentive Stock Options (SOS) are a type of stock option that allows employees to purchase company shares at a predetermined price while enjoying favorable tax treatment. These options are typically granted to employees with certain eligibility criteria, including being employed for a specific duration and meeting specific vesting periods. Nonqualified Stock Options (SOS), also known as Nonstatutory Stock Options, are another type of stock option available under the Contra Costa California Stock Option Plan. SOS provide employees the opportunity to buy company shares at a predetermined strike price. Unlike SOS, SOS do not qualify for preferential tax treatment, and the income gained from exercising these options is subject to regular income tax rates. Exchange Options are a unique feature of the Contra Costa California Stock Option Plan. This specific type of stock option offers participants the flexibility to exchange their existing stock options for new ones, providing an opportunity to adjust or modify their investment strategies based on changing market conditions or personal circumstances. The Contra Costa California Stock Option Plan is designed to empower employees and participants by offering a range of stock option types that can align with their financial goals and risk tolerance. By providing Incentive Stock Options, Nonqualified Stock Options, and Exchange Options, this plan enables individuals to participate in the growth and success of the company while optimizing their potential financial rewards.