Founder Secondary Sales: Taking Chips Off the Table Without Signaling the Wrong Thing

Selling a slice of founder stock before an exit can reduce personal risk, but the mechanics, the taxes, and the optics all require care.

A founder who has spent six years building a company may hold tens of millions of dollars of paper wealth and very little cash. Selling a portion of that stock in a secondary transaction, often alongside a financing round, has become a normal part of the private company landscape. In the first half of 2026, Carta counted 71 tender offers on its platform totaling roughly $3 billion, up 34% by count from a year earlier, with about 70% at Series C or later. Founder-specific secondaries are a related but distinct animal, and they come with their own set of questions.

Why founders consider selling early

The case for a partial sale is mostly about risk. A founder's salary, unvested equity, and personal identity are already tied to one company, leaving the household with almost no diversification. Converting a small percentage into cash can pay off a mortgage, fund a reserve, or remove the pressure to accept a mediocre acquisition offer because the family needs liquidity. Investors sometimes support this for exactly that reason: a founder who is financially secure can afford to swing for a bigger outcome.

The cost is straightforward. Shares sold today at a private valuation forgo any future appreciation, and the price in a secondary is frequently discounted to the preferred price of the round because common stock lacks the liquidation preference that investors hold.

The mechanics and the approvals

Private company stock is not freely transferable. As Cooley's guide to secondary sales explains, common stock is typically subject to a right of first refusal that gives the company the opportunity to buy shares before a third party can, and it has become increasingly common for bylaws to require separate board approval for any transfer. Investor agreements often add co-sale rights that let other holders participate proportionally. In practice, a founder sale is negotiated with the board and lead investors rather than arranged privately.

Valuation is a second practical issue. Private companies obtain regular independent appraisals, commonly called 409A valuations, so that option grants can be priced at fair market value. A founder sale at a price well above the current appraisal can influence the next valuation, which raises the strike price on future employee options. The Cooley guide notes that the impact depends on the terms, the parties, and the size of the transaction; a small, investor-led sale is generally less consequential than a large one to an outside buyer.

Tax treatment

For federal purposes, gain on founder shares held more than one year is long-term capital gain. In 2026, the top federal rate of 20% applies above taxable income of $545,500 for single filers and $613,700 for joint filers, and the 3.8% net investment income tax applies above $200,000 or $250,000 of modified adjusted gross income. California taxes the gain as ordinary income at rates up to 13.3%.

The largest tax variable is often qualified small business stock. Under the changes enacted in 2025, stock acquired after July 4, 2025 can qualify for a 50%, 75%, or 100% federal exclusion after three, four, or five years, with a per-issuer cap of $15 million, while stock acquired earlier still requires the five-year holding period. A founder whose shares are a few months short of the threshold may want to weigh the value of waiting against the value of liquidity now; selling part of the position at different times is one way to manage this. California does not conform to the QSBS exclusion, so the state tax applies regardless.

Managing the signal

The optics concern is real but manageable. A sale structured with investor participation, sized to a modest fraction of holdings, and explained to the board as a diversification step is read very differently from a founder quietly seeking buyers. Some boards set a policy in advance, such as permitting sales of a limited percentage of vested shares at each round, which removes the need for an awkward one-off request. Transparency with co-founders matters as well.

What to weigh

A secondary sale reduces concentration and can improve decision-making, at the cost of forgoing upside on the shares sold, potentially affecting the company's option pricing, and triggering tax that could otherwise be deferred or, with QSBS, partly excluded. The right size and timing depend on the household's needs, the company's stage, and the terms the board will approve.

This article is educational only and is not investment, tax, or legal advice; founders should consult qualified tax and legal professionals before entering into any secondary transaction.

Important Disclosures

Important Disclosures: Propulsion Capital Management is an investment adviser registered with the State of California Department of Financial Protection and Innovation. Registration does not imply a certain level of skill or training. This article is provided for general informational and educational purposes only and does not constitute investment, tax, legal, or accounting advice, nor an offer or solicitation to buy or sell any security or to adopt any particular investment strategy. The information is believed to be accurate as of the date of publication but is subject to change without notice; tax laws and regulations change frequently and their application depends on individual facts and circumstances. Nothing herein should be relied upon as a substitute for personalized advice from a qualified professional. Investing involves risk, including the possible loss of principal, and past performance is no guarantee of future results. Diversification does not ensure a profit or protect against loss. Any examples are hypothetical, are for illustrative purposes only, and do not reflect the experience of any client. Links to third-party websites are provided for convenience; Propulsion Capital Management does not endorse, and is not responsible for, the content of third-party sites. Propulsion Capital Management does not provide tax or legal advice; please consult your tax adviser or attorney regarding your specific situation.