To sell startup equity well, sell only when the cash buys a specific milestone, and check first whether your company’s agreements allow the sale. A primary round funds the company; a secondary sale pays the seller and usually needs consent.
This guide sits inside our wider walkthrough on how to start a startup. It covers timing, the mechanics of each route, pricing, ownership limits and the legal and tax checks that come before closing.
When founders should sell equity
The right moment depends on whose cash problem you are solving. If the company needs money to reach a milestone, the answer is a primary raise. If the founder needs personal liquidity, the answer is a secondary sale, which is harder to arrange.
The personal case is real. Part-owners with most of their net worth tied up in company stock are often equity-rich and cash-poor. Waiting for an exit is not a quick fix either: investors usually wait years for a liquidity event, and the average technology startup that went public between 1995 and 2005 was 7.3 years old at IPO, according to the same secondaries analysis.
Your own documents may block a personal sale. Young startups typically prohibit secondary sales and pledging, and founder sales usually need investor consent unless the shareholders’ agreement provides otherwise, as SeedLegals explains for UK startups. A founder who needs cash early should therefore expect to raise company money first and negotiate any personal sale into that round.
Before committing to either route, measure runway against real costs. A startup budget template shows how many months a raise would buy and whether the milestone it funds is reachable in that time. If cutting costs or growing revenue closes the gap, a smaller sale, or none, protects more ownership.
The sequence of a sale
A clean sale follows a fixed order, and skipping a stage is where deals stall. Each stage below is expanded in the sections that follow.
- Name the use of proceeds. Tie the money to one milestone so buyers can see what it changes.
- Read your agreements. Transfer restrictions, consent clauses and pre-emption rights decide who may sell and to whom.
- Pick the route. Primary round for company cash, secondary sale for the seller’s cash.
- Set price and terms. Agree valuation together with the rights attached to the shares.
- Clear legal and tax steps. Confirm the securities exemption, consents and tax treatment before signing.
- Close and record. Update the cap table so every holder’s position is accurate.
Primary and secondary sales compared
The route determines who receives the money. In a secondary sale the seller is a shareholder, not the startup, so the cash goes to that shareholder and the company’s bank balance does not change. A primary round is the reverse: the company issues shares and receives the proceeds. If the goal is longer runway, only a primary round delivers it.
Rights that shape a secondary sale
Two common clauses affect timing and price. A right of first refusal lets the startup buy back your equity at the same price a buyer is willing to pay; in UK-style agreements, shares are offered to other shareholders before a third party. A right of co-sale means you must notify all other owners before selling, they may join the sale, and that can delay it and reduce the price or quantity you achieve.
The practical lesson is to line up these notices early. A buyer will price in the delay, so a seller who hasn’t cleared first-refusal and co-sale steps weakens their own negotiating position.
Secondary platforms
Specialist platforms exist for sellers whose company permits transfers. Fees and minimum sizes rule many small holders out unless they pool shares.
| Platform | Seller fee | Minimum seller transaction | Planning use |
|---|---|---|---|
| Forge | 5% | At least $100,000 of shares | Suits a seller with a large block; the fee comes out of proceeds. |
| EquityZen | 5% | $175,000, though small sellers can pool together | Pooling is the route for holders below the minimum. |
These figures come from a 2022 analysis of startup secondaries, so confirm current terms with the platform before planning around them.
Pricing the equity and sizing the sale
Price is a valuation, but the valuation only tells part of the story. Headlines make this visible: one reported round was $550 million raised at an $8 billion company valuation. For an early company, a tool such as our Startup Valuation Calculator: Estimate Your Company’s Worth Fast — A Practical 2026 Guide – Startalliance gives a working range to bring into talks with an angel investor or fund.
Terms matter as much as the headline price
Investors usually receive preferred stock, while founders and employees receive common stock, and preferred holders access liquidation proceeds before common holders, according to Crunchbase News. That ordering means two deals at the same valuation can pay founders very different amounts at exit.
Participation is the clearest example. Crunchbase’s hypothetical has an investor putting in $20 million for participating preferred shares representing 20 percent on an as-converted basis. Participating holders take their initial investment back first and then a pro rata share of what remains, so the percentage on the cap table understates their take. The same source notes that over 80 percent of VC deals struck in Q2 2017 had no participation rights attached. When a term sheet includes participation, treat it as a price concession and push back or ask for a higher valuation to compensate.
How much equity to sell
The supported benchmark concerns founders selling part of their own holding alongside a funding round. SeedLegals reports that investors agreed 90% of the time when the percentage was reasonable, usually 10%, and its platform default lets founders sell up to 10% of their shares without investor approval. That is a UK platform’s default, not a universal cap, so check your own shareholders’ agreement.
For a primary round, no single percentage is right. Size the raise to the milestone it funds, then test each dilution outcome against the runway it creates. The 20 percent in the Crunchbase example is an illustration, not a target. Selling more than the milestone needs only adds dilution; selling less leaves you raising again before the milestone lands.
Protecting runway and control
An equity sale is one of several ways to fund growth, and the alternatives trade different things away. Revenue growth, convertible notes, venture debt and grants each cost something other than immediate ownership, and each deserves a price check against the milestone you need to hit.
- Equity sale. Gives up ownership and, depending on terms, payout priority; the company’s runway extends only if the shares are newly issued.
- Secondary sale. Gives the seller cash without changing company funds, which suits a founder’s personal liquidity rather than a runway problem.
- Pledging shares as loan collateral. The holder forfeits the shares if the loan isn’t repaid, so it can give up economic rights as surely as a sale does.
Control also lives in the cap table. A pooled vehicle can keep it manageable: a special purpose vehicle can hold up to 2000 shareholders yet counts as one investor to the startup. After any closing, update the cap table so every holder’s stake and class of shares is recorded and the board sees the effect on ownership.
Legal and tax checklist
Work through these items with a securities lawyer and a tax adviser before signing, since both rules and rates depend on jurisdiction and deal structure.
- Securities exemption. US startups generally sell equity under three regulations: Reg CF, Reg A+ and Reg D, per the secondaries analysis. Choose the one that fits the investors you intend to approach.
- Shareholder count. A startup can have only a maximum number of shareholders before it must report fully to the SEC, so each new holder counts.
- Consents. The shareholders’ agreement and articles can bar founders from selling without investor consent, and sellers may have to offer shares to existing shareholders before a third party.
- Tax on proceeds. Selling shares for cash triggers capital gains tax, with the rate depending on how long the shares were held.
- Local relief. An older SeedLegals article described a 10% capital gains rate for eligible UK founders with a significant shareholding. Treat it as a dated example and confirm current rules.
Finally, document each approval and keep a record of consents. Good records make due diligence faster and protect you if a buyer later questions whether a transfer was permitted.
Frequently asked questions
How does a special purpose vehicle affect investor count?
An SPV can hold up to 2000 shareholders, but the startup treats it as a single investor. That keeps the startup’s own shareholder count lower than the number of people who invested.
Can part of a sale payment be held back?
Yes. In an acquisition, part of the sum may be placed in escrow. The amount and release depend on the deal conditions, so read those terms before counting on the full payment.
Can tax be deferred in a stock-for-stock deal?
Sometimes. Certain stock-for-stock deals may let you defer capital gains until you sell the acquired shares, depending on deal structure and tax rules, so check with a tax adviser before agreeing.
