In a secondary sale, money changes hands but the company raises nothing: an existing shareholder sells stock they already own to a new or existing investor. This is the opposite of a *primary* financing, where the company issues new shares and banks the proceeds.
Why secondaries have exploded
Startups now stay private for a decade or more, which traps founder and employee wealth in illiquid stock through the years when people buy houses and have children. Secondaries are the pressure valve. In 2025–2026 the secondary market has been one of the most active corners of venture: dedicated secondary funds, tender offers at AI companies with soaring valuations, and platforms like Forge and EquityZen matching individual sellers with buyers.
The common formats
- Founder secondary in a round — a slice of a primary financing (commonly 5%–15% of the round) buys shares directly from founders; now routine at Series B and beyond, and increasingly negotiated at strong Series As
- Company-sponsored tender offer — the company organizes a window where employees can sell to designated buyers at a set price; the cleanest structure for broad employee liquidity
- One-off transfers — an individual sells to a secondary fund or another investor, subject to the company's transfer restrictions
The friction
Private stock does not trade freely. Most transfers require board approval and pass through a right of first refusal; many companies also impose blanket transfer restrictions to keep the cap table tidy and protect their 409A valuation. Pricing is negotiated, frequently at a discount of 10%–30% to the last primary round for common stock — though shares of the hottest AI companies have recently traded at premiums.
Signal management for founders
A modest founder secondary — enough to remove personal financial desperation — is now widely viewed by VCs as alignment-positive: a founder who has taken some chips off the table can rationally swing for a large outcome. A founder selling a large stake early sends the opposite message. Size and timing are everything.