Equity Vesting Schedules Explained: A Founder's Plain-English Guide

What Is Equity Vesting?

Vesting is the process by which founders and employees earn their equity ownership over time. Rather than owning all of your shares outright from day one, vesting creates a schedule under which you earn the right to those shares incrementally — typically tied to continued service to the company.

The most common startup vesting schedule is four-year vesting with a one-year cliff. Here's what that means: for the first 12 months (the "cliff"), you earn no equity. On day 366, you earn 25% of your total grant at once (the cliff vests). After that, the remaining 75% vests monthly or quarterly over the following three years.

Why Founders Need Vesting (Yes, Even Co-Founders)

Many first-time founders assume vesting is only for employees. In fact, co-founder vesting is one of the most important protective mechanisms a startup can have. If one co-founder leaves six months in — before the cliff — vesting ensures they leave with a proportionally small equity stake, rather than walking away with 30% of the company and no continuing obligation to help build it.

Investors almost universally expect to see founder vesting schedules when reviewing a startup's cap table. If founders own their equity outright with no vesting, sophisticated investors will often require a vesting reset as a condition of investment.

Single-Trigger vs. Double-Trigger Acceleration

Acceleration provisions determine what happens to unvested equity in an acquisition. There are two types:

  • Single-trigger acceleration: unvested equity accelerates automatically upon a change of control. This is favorable for founders but less attractive to acquirers.
  • Double-trigger acceleration: requires both a change of control AND a qualifying termination. This is the market standard and provides founder protection without deterring acquirers.

Handling Vesting When a Co-Founder Leaves

When a co-founder departs, the company typically has the right to repurchase unvested shares at cost. Having a clear, legally documented process for this — including buyback rights, notice periods, and dispute resolution — prevents co-founder departures from becoming existential company crises.

Zecca Ross Law builds vesting schedules and co-founder agreement terms that protect all parties — including provisions that prevent a departing co-founder from holding equity hostage or creating governance problems after they leave.

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