One of the hardest things about employee equity is that even after an employee has exercised their options and owns actual shares, those shares are usually illiquid — there is no easy way to turn them into cash until the company is acquired or goes public, which may be years away or never. Secondary sales are one mechanism that can provide liquidity before that point. This guide explains what a secondary sale is, how it works, and what to consider.
What a secondary sale is
A secondary sale is the sale of existing shares by an existing shareholder to a buyer — as distinct from a primary issuance, where the company creates and sells new shares to raise capital. In a primary round, money goes to the company; in a secondary sale, an existing shareholder sells their shares and the money goes to that shareholder.
In the ESOP context, a secondary sale is when an employee who holds shares (having exercised their options) sells those shares to a buyer — often an investor, the company itself, or another party — to realise value without waiting for an acquisition or IPO. It is a way for employees to get liquidity on their equity ahead of a traditional exit.
Why secondary sales matter for employees
The significance of secondary sales for employees is liquidity. Without a secondary sale (or a company-run liquidity programme), an employee with exercised shares typically has to wait for the company to be acquired or to go public before they can convert their equity into cash — and that wait can be long and uncertain. A secondary sale offers an earlier route to realise some value.
This matters because employees may have real reasons to want liquidity before an exit — personal financial needs, a desire to de-risk by taking some money off the table, or simply the wish to realise some of the value they have built up. Some companies facilitate secondary sales (sometimes as organised liquidity events, such as allowing employees to sell a portion of their shares during a funding round) precisely to give employees this option and to reward and retain them. So secondary sales can be an important part of how equity actually delivers value to employees in practice, especially at companies that stay private for a long time.
How a secondary sale works, and the restrictions
Secondary sales of private company shares are not as simple as selling listed shares on a market, because private company shares come with restrictions, and a sale usually requires navigating them.
Private company shares are typically subject to transfer restrictions set out in the company's constitutional documents and shareholder agreements. Common restrictions include rights of first refusal (the company or existing shareholders may have the right to buy the shares before they can be sold to an outside buyer), board or company approval requirements for transfers, and other conditions on who shares can be sold to and how. So an employee cannot usually just sell their shares to anyone they like — the sale generally needs to respect these restrictions and obtain the required approvals.
This means a secondary sale usually involves a process: identifying a buyer (which may be facilitated by the company, an investor, or a platform), respecting any rights of first refusal, obtaining the necessary company or board approvals, agreeing the price, and documenting the transfer properly so the company's records and cap table are updated. Because of the restrictions and approvals, secondary sales are more involved than ordinary share sales, and they typically happen with the company's awareness and cooperation rather than entirely independently.
There may also be limits on how much an employee can sell — organised secondary programmes often cap the proportion of holdings employees may sell, to balance giving liquidity against keeping employees invested in the outcome.
The tax treatment
A secondary sale of shares is a sale, and so it has tax consequences for the selling employee. In broad terms, selling shares typically gives rise to capital gains tax on the gain — the difference between the sale proceeds and the employee's cost (which relates to what they paid and what was already taxed). The specifics depend on the jurisdiction and the holding period, and the capital gains treatment of selling ESOP shares is covered in our ESOP taxation guide. The key point is that realising value through a secondary sale is a taxable event, so the employee should understand the tax before selling. As always, the precise treatment should be confirmed with a qualified tax advisor for the specific situation.
What to consider before a secondary sale
For an employee considering a secondary sale, several things matter. The price being offered relative to their view of the shares' worth — selling early may mean selling below what the shares could be worth later, the trade-off for getting liquidity now. The restrictions and approvals required, and whether the sale can actually be completed. Any limits on how much can be sold. The tax consequences of the sale. And the broader decision of whether to take liquidity now or hold for a potential later exit. These are genuine financial decisions, and for significant holdings, advice is worthwhile.
Common secondary sale mistakes
The recurring issues include:
Assuming private shares can be sold freely, overlooking transfer restrictions and approval requirements.
Not respecting rights of first refusal or other constraints, which can invalidate a sale.
Overlooking the tax consequences of the sale.
Failing to document the transfer properly and update the company's records and cap table.
Selling without weighing the trade-off between liquidity now and potential value later.
Why secondary sales are easier on a connected system
A secondary sale changes who owns shares — it has to respect transfer restrictions, obtain approvals, and result in an accurate update to the cap table, with tax implications for the seller. When the cap table lives in a disconnected spreadsheet, processing a secondary sale (or an organised secondary programme involving many employees) and keeping the ownership record accurate is a manual exercise prone to error, especially when multiple transfers happen together.
When ESOP management and the cap table sit on the same database, a secondary sale is reflected accurately in the ownership record from the same system that holds the grants and exercises, so the cap table stays correct as shares change hands — and an organised secondary programme involving many employees is handled coherently rather than as a mass of manual spreadsheet edits. This is part of how Helion is built, with ESOP and the cap table living natively together — so that secondary sales, like every other equity event, keep the ownership picture accurate and current. The legal and tax aspects of a secondary sale, of course, require qualified advice, but the record-keeping that keeps the cap table right through such transfers is handled by design. For a company facilitating employee liquidity through secondary sales, that connected design keeps the cap table reliable through what can otherwise be a messy process.
This guide gives general information on secondary sales of ESOP shares as of 2026 and is not legal, tax, or financial advice. The rules, restrictions, approvals, and tax treatment governing secondary sales of private company shares vary by company and jurisdiction. Consult qualified legal, tax, and financial advisors for a specific situation.