The strike price (also called exercise price) is the predetermined price at which you can buy or sell shares through an option contract or equity grant. In the context of options trading, it represents the cost per share to exercise your right. For startup equity grants, it's the price your employees or you pay to purchase vested shares, typically set at the company's fair market value when the option is granted. Once locked in, the strike price never changes, even if the company's valuation skyrockets or plummets.
How It Works
When you receive stock options, two prices matter: the strike price and the current market price. If you hold a call option with a $5 strike price and the stock trades at $12, your option is "in the money" by $7—you can buy at $5 and sell at $12. Conversely, if the stock drops to $2, your option is "out of the money" because exercising it would be pointless. The strike price is set on the grant date and remains your exercise price throughout the option's life, regardless of company performance or market conditions.
Why It Matters for Investors
Strike price directly determines your profit potential and downside protection. A lower strike price means greater upside leverage—small increases in company valuation translate to larger returns. For angel investors negotiating convertible notes or SAFEs that convert at future valuations, understanding how strike prices work in dilution scenarios is critical. In M&A exits, the strike price determines which option holders realize gains; those with lower strikes capture more value.
Example
You join an early-stage fintech startup and receive 10,000 options with a $0.50 strike price. Two years later, the company raises a Series A at a $20 million valuation, and your strike price reflects that fair market value at grant. If the company later achieves a $200 million valuation and goes public at $15 per share, your right to buy 10,000 shares at $0.50 is extraordinarily valuable—each share nets you $14.50 in profit. Without that locked-in strike price, you'd have no advantage over public market investors buying at $15.
Key Takeaways
- Strike price is fixed at the grant date and never changes, creating your leverage in equity upside scenarios
- In-the-money options (current price above strike) have immediate intrinsic value; out-of-the-money options have only time value
- Lower strike prices provide greater returns on the same company appreciation, making strike price negotiation important in employment offers
- Understanding strike price is essential for evaluating equity compensation packages and modeling investment returns