Vesting for co-founders: cliff, reverse vesting, leavers

Vesting is the rule that makes a co-founder earn their shares over time instead of owning them all on day one. It protects a founding team from its most common disaster: someone leaves early and keeps a large stake. This guide explains the standard schedule, reverse vesting in a GmbH or the Austrian FlexCo, leaver clauses, and the usual mistakes.

What is vesting, and why does every team need it?

Vesting means that the shares a founder holds become theirs step by step, as they stay and work. Until a share has vested, the company or the other founders can buy it back at a low price if the founder leaves. After it has vested, it is the founder's to keep.

The reason is simple. Without vesting, a founder who leaves after eight months keeps the full stake, while the others work for years to make it valuable. Investors call that dead equity, and many will not invest until it is cleaned up, which means buying the leaver out at a price nobody enjoys. With vesting, leaving early means leaving with little, and the people who stay keep the company. Our guide on how to split equity between co-founders explains why the split itself matters less once vesting is in place.

What does the standard schedule look like?

The standard that investors expect and most lawyers recommend is four years with a one-year cliff:

• The cliff. In the first twelve months, nothing vests. A founder who leaves before the first anniversary keeps no shares.
• The first anniversary. A quarter of the shares vest at once.
• Then monthly. The remaining three quarters vest in 36 equal monthly steps.

So after 18 months, 18 of 48 months have passed and 37.5 percent is vested. After two years it is half. After four years everything is vested, and the schedule ends. Some teams use three years, some add a year when an investor comes in. The shape stays the same: a cliff that filters out short stays, then steady steps.

Vesting applies to every founder, including the one who had the idea. A founder who refuses vesting for themselves while asking it of others is telling the team something.

Money is a different matter. Vesting is about the work still to come, not about cash already in the company. If a founder pays in more than their part of the share capital, keep that money out of vesting: as a shareholder loan with its own terms, or as shares bought at the price an angel investor would pay. At the very least, the buy-back price for unvested shares should not fall below what the leaver actually paid in. They lose the upside they have not earned yet, not their money.

How does reverse vesting work?

In a company limited by shares in the United States, founders often receive their shares under a restricted stock agreement, and the shares vest in the legal sense. In Germany and Austria that does not fit the GmbH, and in Austria it does not fit the FlexCo either, the flexible capital company that Austria introduced in 2024 and that exists nowhere else. The founders hold their shares in full from the day the company is registered, and a transfer of shares needs a notary, in the FlexCo a notary or a lawyer.

Founder vesting there is agreed by contract as reverse vesting. The founders agree, usually in the shareholders' agreement, that if one of them leaves before the schedule has run, the other founders have the right to buy back the unvested shares, and the leaver has the duty to sell them.

The buy-back price for unvested shares is often the nominal value or the price originally paid. Kanzlei Herfurtner describes the usual clauses: the schedule, the trigger events, the price, and how the buy-back is executed. The Austrian FlexCo also offers company value shares without voting rights, a second instrument for employee and co-founder participation. Founder vesting still runs through the agreement there too.

Because a GmbH share transfer needs a notary, the agreement should include the mechanics: a power of attorney or an offer that the leaver has already signed, so the buy-back does not depend on the leaver's cooperation after a conflict.

What do good leaver and bad leaver clauses decide?

The leaver clauses decide the price. A good leaver leaves for reasons the agreement accepts: illness, death, or being let go without cause, sometimes a resignation after the cliff. They keep the vested shares, and the agreement often lets them sell the unvested shares at a fair value rather than the nominal value.

A bad leaver breaches the agreement, is dismissed for cause, or leaves without reason during the cliff. They typically lose the unvested shares at nominal value, and some agreements let the company buy back vested shares too, at a discount.

The lines between the two cases are where most disputes happen later. Define the events precisely, keep the consequences proportionate, and resist the temptation to make every departure a bad leaver case. Germany's Federal Court of Justice has accepted vesting clauses with buy-back rights in principle, as firms like LFR explain, but the terms have to be reasonable in duration and price. A clause that strips a founder of everything after three years of work for a minor breach is the kind that fails.

When do you agree it, and what does an investor change?

Agree vesting when you agree the split, in the first weeks, before the company exists if possible. Hellmann and Wasserman found that 73 percent of teams split their equity within the first month, and many of those splits had no vesting attached. A founder agreement before incorporation can already contain the schedule; at incorporation it moves into the shareholders' agreement.

At the first priced round, investors often ask for vesting again, sometimes a new four years from the round. Negotiate credit for the time already served and a cap on the total years. A schedule that already exists is a strong argument: it shows the team thought about the case before an investor had to.

Which mistakes should you avoid?

• No vesting because "we trust each other". Vesting is not about trust. It is about illness, a family move, a better offer, and the person who stays.
• Vesting for the others, not for yourself. It binds everyone or it poisons the team.
• A schedule without mechanics. In a GmbH the buy-back needs a notary; without a signed offer or power of attorney it can be blocked.
• Bad leaver as the default. Proportionate consequences hold up in court and in the team.
• Forgetting the exit. What happens to vesting on a sale? Most agreements accelerate it, fully or partly, so founders are not punished for success.

Vesting is one of the agreements that prevent the conflicts described in our guide on co-founder conflict. It belongs in the first conversation with a potential co-founder, together with the questions on commitment and money. And if you have not found that person yet, the open roles on Cofoundista show what founders in Europe offer, equity ranges included.