Vesting protects the company from early departures walking away with equity.
Vesting is the mechanism that earns equity over time. Founders and early employees receive shares or options that vest according to a schedule — leave before vesting completes and you forfeit the unvested portion. The 4-year vest with 1-year cliff is nearly universal.
25% vests at month 12 (the cliff), then 1/48th monthly for the next 36 months. Leave before month 12: zero vested. Leave at month 24: 50% vested. This is standard for founders and employees at seed through Series C. Investors will require it at the first priced round if founders don't already have vesting.
Single trigger: vesting accelerates on a change of control (acquisition). Rare for founders, more common for early hires. Double trigger: vesting accelerates only if there's a change of control AND the employee is terminated without cause. Standard for founders; increasingly standard for executive hires.
Credit for time served: if you've been building for 12+ months pre-financing, negotiate for that time to count toward the vest (starts you 25%+ vested at close). Repurchase price: if you leave, the company can repurchase unvested shares at original cost (not fair market value) — standard and reasonable.
Standard: 2-year vest with monthly vesting (no cliff), because advisor relationships often end informally. Grants: 0.1-0.25% for a genuine advisor commitment (monthly meetings, network intros, specific asks). Larger grants require operator involvement, not advisor status.
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