As companies stay private longer, secondary sales have become a common way for founders and early employees to realize some liquidity without waiting for an IPO or acquisition. Here's what you need to understand before pursuing one.
What a Secondary Sale Is
A secondary sale is the transfer of existing shares from a current shareholder — a founder, employee, or early investor — to a new buyer, as opposed to a primary issuance where the company sells new shares and receives the proceeds. Secondaries don't raise capital for the company directly, but they can relieve pressure on employees and early backers who have significant paper wealth tied up in illiquid stock. For a company, the appeal is straightforward: people who have been waiting years for an exit get some cash in hand, which can reduce attrition risk during a long run-up to a liquidity event.
Common Structures
Secondaries can happen a few different ways: a structured tender offer run alongside a new financing round, where new investors or the lead of a round buy a portion of existing shareholders' stock; individual negotiated sales to an investor seeking additional exposure to the company; or sales facilitated through specialized secondary marketplaces. Company-sponsored tender offers are generally the most founder- and employee-friendly, since they're structured, priced consistently, and run with company cooperation. Secondary marketplaces and unsolicited broker outreach, by contrast, can introduce pricing inconsistency and sometimes involve buyers the company has not vetted, which is one reason many companies try to funnel secondary interest into a single sanctioned process rather than letting it happen piecemeal.
Why Companies Allow Them
Later-stage companies increasingly build secondary liquidity into their financing strategy to retain talent and reduce the pressure for a premature exit. Allowing some liquidity for long-tenured employees can be a meaningful retention tool, particularly at companies that have stayed private for seven-plus years. It's worth discussing with your board and lead investors as part of your broader fundraising and retention strategy, alongside your growth stage financing plans. Boards also like secondaries because they can be sized and timed deliberately — unlike an open-ended employee stock sale, a company-run tender offer lets the board set a cap on total dollars changing hands and decide which classes of stakeholders are eligible to participate.
What Founders Need to Check First
Most startup stock comes with transfer restrictions written into your certificate of incorporation and stockholder agreements, including rights of first refusal that let the company or existing investors match any outside offer before it closes. Review your governing documents and your cap table carefully, and loop in counsel before entertaining any outside offer — unauthorized transfers can create compliance headaches for both the seller and the company. Many stock plans also impose transfer restrictions on options and restricted stock units that differ from the rules governing common shares held outright, so the type of security being sold matters as much as who is selling it.
It's also worth checking whether your company's bylaws require board approval for any transfer, since even a willing buyer and seller can be blocked if the proper consents aren't obtained first. Founders who skip this step sometimes find out too late that a handshake deal with an outside buyer isn't enforceable without the company's sign-off.
Tax and Valuation Considerations
A secondary sale is generally priced at or near the company's most recent valuation, though pricing can diverge meaningfully in either direction depending on investor demand and company performance since the last round. Secondary sales are also taxable events for the seller, generally subject to capital gains treatment, and can interact with qualified small business stock (QSBS) holding period requirements — the IRS rules around Section 1202 QSBS exclusions are worth understanding before you sell, since an early sale could forfeit a significant future tax benefit. A secondary transaction can also affect your company's 409A common stock valuation, since it provides a new data point on fair market value.
Sellers should also think through the difference between long-term and short-term capital gains treatment, which depends on how long the shares have been held, and should talk to a tax advisor well before a transaction closes rather than after terms are already set. The paperwork involved — transfer agreements, updated cap table entries, and any required 83(b) or withholding considerations — can take longer to finalize than the negotiation itself.
How This Fits Into Your Broader Fundraising Strategy
Companies often pair a secondary opportunity with a new primary financing round, giving new investors a chance to build a larger position while existing shareholders get partial liquidity. If you're structuring a round that includes a secondary component, make sure your term sheet clearly separates the primary and secondary allocations — our guide to the essentials of term sheets covers the mechanics that matter here, and keeping clean records matters as much as it does for any other round, as outlined in our due diligence for startups guide.
Clear documentation also protects you later. A messy secondary process — inconsistent pricing across sellers, unclear eligibility, or informal side deals — can create friction in diligence for your next round or an eventual acquisition, when buyers will want a clean, well-documented capitalization history.
When to Consider It
Secondary liquidity makes the most sense once your company has demonstrated durable traction and has investor demand exceeding what a primary round alone would absorb. Early-stage companies rarely have this kind of demand, so secondaries are much more common from Series B onward. If you're earlier than that and an investor approaches you about buying founder or employee shares, treat it as a signal worth discussing with your board, but don't assume it's the right moment to act on it.
If you're preparing for a raise and want a second set of eyes on your strategy, materials, or investor targeting, book a free consult with Quantum Growth Advisors. We work with founders across stages to help them get fundraising-ready and connect with the right investors.