Master your startup's equity by correctly splitting founder shares with vesting, modeling dilution from investors and SAFEs, and using an employee option pool to attract top talent. Avoid common, costly mistakes around 83(b) elections and equity communication.
Key takeaways
- Split founder equity based on contribution, not a 50/50 default.
- Mandate 4-year vesting with a 1-year cliff for all founders. No exceptions.
- File your 83(b) election within 30 days of receiving stock to avoid a massive tax bill.
- Model dilution from SAFEs and priced rounds so there are no surprises.
- Communicate employee grants in dollar value, not just as a percentage.
- Create the employee option pool from the pre-money valuation, not post-money.
Equity is ownership, represented by shares. But thinking of it as a fixed pie is where founders go wrong. Your job isn't to hoard 100% of a tiny pie; it's to grow the entire pie so enormously that your remaining 15% slice is worth a fortune. How? By strategically selling ownership to get the fuel you need to grow.
You'll give equity to two groups: investors (for cash) and employees (for talent). Managing this is a core founder skill. Getting it wrong leads to co-founder disputes, a crippled ability to hire, and failed funding rounds. Getting it right aligns everyone on the same goal: making the company more valuable.
When you incorporate, you and your co-founders own 100% of the company. Your first big test is deciding how to split that ownership.
It feels fair and easy, but a 50/50 split is often a mistake. It assumes all contributions—past, present, and future—are equal. They rarely are. An unequal split, like 55/45 or 60/40, is often more equitable and prevents future resentment. Have the hard conversation now, not when you're fighting over a term sheet.
Past Contributions: Who came up with the initial idea? Who built the prototype or wrote the first lines of code? Who put in cash to get things started?
Future Contributions: Who has the track record to be CEO and raise capital? Who is the technical lead who will build and manage the engineering team? Are there large differences in market-rate salaries for your respective roles?
Commitment Level: Is everyone quitting their job and going full-time on day one? If someone is keeping their job for six months, their vesting should probably start later.
This is the most important mechanism to protect the company. All founder shares must be subject to vesting. The market standard is ironclad: a four-year schedule with a one-year cliff.
How it works: You earn no shares for the first 12 months. On your one-year anniversary (the "cliff"), 25% of your shares vest. The rest vest in equal monthly installments for the next 36 months.
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Frequently asked questions
- What is the difference between a stock option and a share?
- A share represents direct ownership in the company. An option is the *right to buy* a share at a future date at a fixed price (the strike price). Employees must 'exercise' their options (i.e., purchase the shares) to become shareholders.
- What is a 409A valuation and when do I need one?
- A 409A valuation is a third-party appraisal of your company's fair market value (FMV). You need it to set the strike price for employee options. Get your first 409A before you issue your first option grant and then refresh it at least annually or after a material event like a new funding round.
- What is double-trigger acceleration for founder shares?
- Double-trigger acceleration means founder shares vest immediately only if two events happen: 1) the company is acquired, AND 2) the founder is terminated without cause. This protects founders in an acquisition and is a common, investor-friendly term.
- How much dilution is 'normal' in a seed round?
- Expect to sell between 15% and 25% of your company in a seed round. If you're selling more than 30%, it could be a red flag that your valuation is too low or you're raising too much for your stage.
