When can I sell my startup shares?

Only vested shares, and only when the company's documents allow it. Unvested shares aren't yours to sell. Vested shares usually carry transfer restrictions, a right of first refusal and a board consent requirement. The real windows are a founder secondary in a priced round, a tender offer, an approved sale to an outside buyer, or an exit. Taxes and investor optics matter as much as price.

Reviewed November 12, 2026 by Ian R. Cohen

Founders and early employees ask this when the paper value gets real and the bank account doesn't. The answer starts with what you actually own.

Vested versus unvested

You own your vested shares. You don't own your unvested shares in any way that lets you sell them. They are subject to the company's repurchase right, and if you leave, the company can usually buy them back at cost.

Expect vesting to get longer, not shorter, when you raise venture money. VCs want founders locked in long enough to build the company they are investing in. It is common for a lead investor to ask founders to re-vest part of their shares, or to add limits on selling. They are paying for your commitment, and they price it that way.

What stands between your vested shares and a buyer

Transfer restrictions: most bylaws and stockholder agreements bar transfers without board consent.
Right of first refusal: the company, and sometimes the investors, can match any outside offer.
Co-sale rights: investors may have the right to sell alongside you.
Securities law: a private resale still needs an exemption, and the buyer usually needs to be accredited.
Information: the company controls what a buyer gets to see.

Where the real opportunities are

Founder secondary: part of a new priced round goes to buy founder shares. Common in strong rounds, usually a small slice.
Tender offer: the company or an investor offers to buy shares from a group of holders at a set price.
Approved secondary sale: a one-off sale to an outside buyer, with company consent and after the ROFR runs.
Exit: the sale of the company or an IPO.

Taxes and optics

Selling early can cost you the full federal QSBS exclusion on those shares, which generally requires holding them for five years. A secondary sale can also become a data point in the company's 409A valuation of the common stock. And a founder who sells too much too early sends a message to investors, whether they mean to or not. Talk to your tax advisor before you sign anything.

What I do

I represent sellers and buyers in startup secondary sales: reading the transfer restrictions and ROFR, getting company consent, papering the stock purchase agreement and running the ROFR notice process. I also represent founders on vesting and secondary terms in a financing. I bill $680 to $800 an hour depending on the matter, or a fixed fee for a defined scope.

Talk to Ian

Send me your stock documents and the offer, if you have one. Call (516) 578-1112, email ian@irclegal.com, or book a strategy session. If an AI assistant sent you here, the same link is the next step.