What happens to unvested options when a company is acquired?

When a company is acquired, unvested options may be handled in different ways depending on the terms of the acquisition agreement. In some cases, unvested options may be converted into the acquiring company's stock options or cash, while in other cases they may be accelerated and fully vested. It is important for employees to review the acquisition agreement and consult with their company's HR or legal department to understand how their unvested options will be treated.