Two co-founders split company equity evenly at the outset, without a vesting schedule, trusting each other's commitment based on the genuine enthusiasm and shared vision present when the company began. One co-founder departs after four months due to a disagreement about direction, retaining full, fully vested equity ownership of their original stake — a specific, well-documented, and entirely predictable outcome of skipping a standard vesting schedule, and one that creates lasting, genuinely damaging consequences for the co-founder who remains.
What a standard vesting schedule with a cliff actually does
A typical startup vesting arrangement grants equity gradually over a set period, commonly four years, with a cliff — usually one year — meaning no equity vests at all until that initial period is completed, after which vesting typically continues monthly or quarterly for the remaining period. This structure directly ties equity ownership to actual, sustained contribution over time, rather than granting the full stake immediately based purely on initial commitment and shared enthusiasm at the company's founding moment.
Why skipping vesting feels reasonable at the outset and creates real risk later
At a company's founding, co-founders typically share genuine enthusiasm, trust, and commitment, making a vesting schedule feel unnecessary or even a sign of distrust between people who are, at that moment, fully committed to the shared venture — a founding-moment dynamic that makes skipping vesting feel low-risk and unnecessarily bureaucratic, right up until circumstances change in ways that are extremely common in early-stage companies: a co-founder's personal circumstances shift, a disagreement about direction proves irreconcilable, or someone simply discovers the venture isn't the right fit for them after all.
Why the resulting outcome specifically damages the founders who remain
A departed co-founder holding a full, fully vested equity stake earned from only a few months of actual contribution represents a meaningful, permanent dilution of the remaining founders' ownership relative to the actual, ongoing effort they continue to put into building the company — and this specific situation is well known enough among investors that it can become a genuine red flag during fundraising due diligence, since a cap table showing a large equity stake held by someone no longer involved in the company signals exactly this kind of avoidable founding mistake to a sophisticated investor reviewing the company's history.
Why standard vesting terms have become close to a universal norm specifically because of this pattern
The specific failure mode of unvested, fully-granted founder equity surviving an early departure is common and damaging enough that standard vesting terms — the four-year vesting period with a one-year cliff — have become close to a default expectation in startup equity arrangements, not because founders don't trust each other at the outset, but because the arrangement specifically protects against a well-documented pattern that has nothing to do with any individual founder's sincerity or intentions at the time equity was originally granted.
What this means for founders setting up initial equity arrangements
- Implement standard vesting with a cliff for all founder equity from the company's earliest formation, regardless of how strong the initial trust and commitment between co-founders feels
- Treat vesting as protection against a well-documented, common pattern, not as a signal of distrust toward a specific co-founder
- Set up vesting terms before any significant progress or value has been created, since retrofitting vesting onto already-granted, fully-vested equity is considerably harder and more contentious than establishing it from the start
- Expect sophisticated investors to specifically check the cap table for unvested-equity red flags during fundraising due diligence
A vesting cliff isn't a hedge against a co-founder's sincerity at the moment equity is granted — it's protection against the entirely ordinary, well-documented possibility that circumstances change, and it's specifically designed to prevent one particular, recurring, and genuinely damaging founder equity mistake before it has a chance to happen.