What Is Reverse Vesting? Definition, How It Works and Examples

With ordinary vesting, you earn the right to receive shares over time. Stock options and RSUs work this way. With reverse vesting, you receive and own all the shares at once. What vests over time is your freedom from the company’s repurchase right, its right to buy the unvested shares back.

A common pattern is four years with a one-year cliff. Nothing vests until the first anniversary. Then a quarter vests at once, and the rest vests monthly. If you leave before the end, the company can buy back the unvested shares, often at the price you paid. You keep the vested ones.

Because you own the shares, you can usually vote them and receive any dividends while they vest. The same mechanics apply when an employee buys shares under options before they vest. That case is covered in early exercise.

Founders usually buy their shares for a fraction of a cent each when the company is formed. Without vesting, a co-founder who leaves after three months would keep their whole stake. The founders who stay would then build value for someone who stopped working.

For that reason, investors in an early round often ask founders to put their shares under reverse vesting. Founders often negotiate credit for time already worked, so part of the stake starts vested. They may also negotiate accelerated vesting if the company is sold. The result shows on the cap table as shares that are issued but still subject to repurchase.

A reverse vesting agreement is the contract that puts your shares under the company’s repurchase right. In the US it is often called a restricted stock purchase agreement or a stock restriction agreement. Read these terms before you sign.

Number of shares and price

How many shares you buy and what you pay. Founders often pay a very low price per share.

Vesting schedule

The start date, any cliff and how often shares vest after it. Check whether past service is credited.

Repurchase right

What happens if you leave: which shares the company can buy back, at what price and within what period.

Acceleration

Whether a sale of the company, a firing without cause or both speed up vesting.

Transfer limits

Unvested shares usually cannot be sold or pledged.

83(b) reminder

Many agreements remind you to file a Section 83(b) election. Filing it is your responsibility.

A trigger is an event that speeds up vesting. A single trigger is a sale of the company alone. A double trigger is a sale followed by losing your job within a set window. Both are explained in accelerated vesting.

A reverse vest with no triggers has no acceleration clause at all. Your shares keep vesting only by time. If the company is sold, the unvested shares are handled as the deal documents say. They may convert into the buyer’s stock and keep vesting. If you then leave, they can still be bought back.

Investors and buyers often favor fewer triggers, because acceleration can weaken the reason to stay. Founders often ask for at least a double trigger. Which one you get is a negotiated term, and there is no standard version.

The tax code treats unvested shares as property you could lose. Under Section 83, a duty to sell shares back if you stop working is a substantial risk of forfeiture. The Treasury regulation gives that example. While the risk lasts, you are not taxed. At each vesting date, the value of the shares then, minus what you paid, is taxed as income.

A Section 83(b) election changes that. You choose to be taxed when you get the shares. If you paid their full value, the taxable amount is zero, and the regulation allows the election anyway. You file it within 30 days, by a written statement or Form 15620, with the IRS. You also give a copy to the company.

The election also starts your holding period at the purchase date. Without it, the period starts just after each block vests, under 26 CFR 1.83-4. That date matters for the long-term capital gains rate and for the QSBS requirements. See cost basis for how your basis is set.

A founder buys 4,800,000 shares at formation for $0.0001 each, or $480 in total, and files an 83(b) election. The shares vest over 48 months with a one-year cliff: 1,200,000 at month 12, then 100,000 a month. Three things can happen next.

Leaving at month 18, the founder keeps 1,800,000 shares, or 37.5% of the grant. Had the founder skipped the 83(b) election, each monthly block would have been taxed as income on its value at vesting. If the shares had gained value, that income could be large while the shares were still hard to sell.

A reverse vesting order is a different thing with a similar name. It is a court order used in Canadian insolvency cases under the Companies’ Creditors Arrangement Act. In a normal sale out of insolvency, the good assets are moved, or vested, into the buyer. In a reverse vesting order, the buyer acquires the shares of the troubled company itself. Unwanted assets and liabilities are moved out instead, as Canadian Lawyer describes.

The company keeps its permits, licenses and tax attributes, which matters in regulated industries such as mining. Courts have called it an unusual or extraordinary measure. In Harte Gold, a 2022 Ontario case summarized by Torys, the court said convenience alone does not justify one. It has nothing to do with founder or employee shares.

• Missing the 30-day windowThe deadline runs from the transfer and cannot be extended. Without an election, each vesting date is a taxable event.
• Assuming founders are exemptFounder shares under a repurchase right are unvested property for tax, just like an employee’s.
• Not checking the buyback priceIf the company can buy back at your original price, unvested shares bring back almost nothing.
• Expecting acceleration by defaultWithout a trigger in the agreement, a sale does not speed up vesting.
• Confusing the court orderA reverse vesting order is a Canadian insolvency tool. It is unrelated to founder vesting.

Reverse vesting

Owning shares up front while the company keeps a right to buy back the unvested part. The right lapses over time.

Repurchase right

The company’s right to buy back unvested shares, often at the price paid, if the holder leaves.

Cliff

An initial period, often one year, before any shares vest.

Substantial risk of forfeiture

A condition, such as continued work, that you must meet to keep property for good. Tax waits until it lapses.

Section 83(b) election

A filing within 30 days of receiving unvested shares that taxes them at that point.

Acceleration trigger

An event, such as a sale or a firing without cause, that speeds up vesting.

Reverse vesting order

A Canadian court order in insolvency that lets a buyer take the company’s shares while liabilities are moved out.

Related: equity compensation, private company stock, ISO vs NSO and dilution.

Every rule was last checked on October 21, 2026. Tax rules are US federal. The reverse vesting order section describes Canadian law from law-firm and press summaries. The example is illustrative. State tax is not covered.