Stock option An assignment of a certain number of shares giving an individual - usually an employee - the right, but not the obligation buy stock at a certain price (the strike price) at a certain time. Home Resources Startup Law Dictionary Stock option Return to Glossary Need legal help? Schedule a free consultation with a world-class startup attorney on LawTrades. LET'S CHAT Roy G. Business Attorney Heather N. Business Attorney Jared S. Business Attorney Tell us about your project We'll connect you with a vetted attorney in just a few minutes. Trusted by top companies like :