If you have only ever bought publicly traded securities, the pricing mechanism in private secondary markets will feel unfamiliar. In a private market marketplace, there is no central exchange, no live order book, and no market maker posting continuous bid and ask quotes. If you're still building foundational context on how pre-IPO investing and secondary market structures work before learning pricing mechanics, review the complete guide to pre-IPO investing. Instead, prices emerge from a negotiation between buyers and sellers — mediated by marketplaces, brokers, or direct relationships — with reference points anchored to a handful of observable data points rather than continuous price discovery.
This is not a flaw in the market. It is a structural feature of an asset class where transfer restrictions, ROFR rights, and small transaction counts make exchange-style liquidity impractical. Once you understand how pricing actually forms, you can engage more effectively — whether you are a buyer trying to size your indication or a seller trying to set a realistic ask.
The reference points that anchor private secondary prices
Because there is no continuous price feed, participants anchor to observable events. The most important are: the company's last primary round valuation, recent reported secondary transaction prices, and the company's most recent 409A valuation (which is a formal appraisal of common stock fair market value prepared by a third-party firm, required for US companies issuing stock options).
The last primary round sets a ceiling in many buyers' minds — they are unwilling to pay more on the secondary market than what the most recent institutional investors paid in a primary preferred round. In practice, for high-demand issuers like Rocket Lab, Neuralink, or Gemini, secondary pricing has at times exceeded the last primary round's implied common equivalent, because supply is scarce and demand from buyers who could not access the primary is strong. The reverse is also common: companies whose growth has slowed since the last round trade at discounts.
Reported secondary transaction data comes from a variety of sources — marketplace disclosures, company 409A process inputs, news reports on tender offers, and limited partnership secondary fund transactions. None of these is perfectly transparent. A 409A valuation, for example, is prepared for a specific purpose (setting option strike prices) and uses methodologies (OPM backsolve, probability-weighted expected returns) that may not reflect what a willing buyer and seller would agree to on a given day. Treat 409A as a floor reference, not a market price.
What creates the bid-ask spread in private secondary markets
A bid is what a buyer is willing to pay. An ask is what a seller is willing to accept. The gap between them — the spread — exists for several reasons that are more pronounced in private markets than in public ones.
Information asymmetry. Sellers often know more about the company than buyers. An employee who attended the last all-hands meeting knows things that a buyer cannot easily access. Sellers demand a premium to compensate for the risk that they are parting with something more valuable than the buyer realizes. Buyers apply a discount for the same reason — they know they are operating with incomplete information.
Transfer friction. Because transferring private shares requires ROFR clearance, legal documentation, and in some cases board consent, the cost and time of completing a transaction are real. Both parties factor this into their price expectations. A seller who has been through a complicated transfer before will ask for more to offset the administrative burden. A buyer who anticipates a long closing timeline will bid less.
Illiquidity premium. Private shares cannot be sold instantly if circumstances change. A buyer who commits capital to a secondary transaction may not be able to exit for years — until an IPO, merger, or another secondary transaction. This illiquidity is a genuine risk, and it is reflected in the discount buyers demand relative to what they might pay for a comparable publicly traded security.
Supply-demand imbalance. For some issuers, there are many more buyers than sellers. SpaceX is the canonical example: retail demand from accredited investors is enormous, but SpaceX's transfer restrictions are among the most restrictive in the market, limiting supply. That imbalance compresses the spread — sellers can ask more and still find buyers. For issuers with less buyer demand, sellers must accept wider discounts to transact.
How a marketplace surfaces and narrows that spread
A well-functioning secondary marketplace reduces the spread by aggregating supply and demand signals, standardizing documentation, and providing price transparency. The mechanism differs by platform.
Some marketplaces operate on an indication-of-interest model: buyers submit price indications, sellers submit asks, and the platform facilitates a match when the two are within a negotiable range. This is closer to a double-auction or negotiated dealer market than to an exchange. Others operate more like brokers, with a platform team actively sourcing and pricing inventory.
The key question for any buyer is: does the platform verify that seller-side supply actually exists before showing you a listing? In some secondary markets, a listed price represents only a buyer's posted indication with no confirmed seller. In others, the listing reflects confirmed seller intent with verified share ownership. The difference matters enormously for your ability to execute — an unconfirmed indication that falls through wastes weeks of diligence time and leaves your capital deployed in your brokerage account instead.
Reading a secondary market listing: what the numbers mean
How sellers should think about setting an ask
Sellers frequently make two mistakes. The first is anchoring too hard to the last primary round — assuming that because investors paid $X per preferred share in the last round, common stock is worth $X. Preferred has rights common does not. A reasonable discount to the last primary preferred price is normal and expected. Fighting that discount extends time to transaction without improving outcome.
The second mistake is anchoring to wishful future valuations — what the company might be worth at IPO — rather than present secondary market conditions. Secondary buyers are pricing risk, not certainty. An ask that requires a buyer to pay for an outcome that has not happened yet will sit unfilled. Sellers who calibrate to where recent comps have cleared move faster and with less friction.
The most useful thing a seller can do before setting an ask is review recent secondary transaction data for their specific issuer and understand how their share class (common vs. preferred, and which preferred series) affects their price relative to those comps. A marketplace that provides this context — rather than just accepting whatever ask you submit — is one that is working in your interest.
What moves prices between now and your settlement date
In a negotiated private secondary market, the agreed price is typically locked at the time of signing. But the time between signing and settlement is not zero — it can range from a day to several weeks depending on ROFR clearance, legal review, and the specific issuer's transfer process. During that window, new information can emerge: a primary round at a different valuation, a key executive departure, a regulatory development, or a public competitor's earnings call that resets AI sector sentiment.
Buyers and sellers should both understand that private secondary transactions generally do not include price adjustment mechanisms tied to post-signing events. You are buying or selling at the signed price. This creates an incentive to move quickly through the settlement process and to work with platforms and counsel that treat ROFR clearance and documentation as parallel workstreams rather than sequential ones.
Understanding how pricing forms is the foundation of every secondary decision — whether you are a buyer sizing an indication on Stripe, Canva, or Brex, or a seller deciding whether to wait for a better market. See our complete guide to secondary investing for a broader framework, or visit the marketplace to review current bid-ask conditions across all 28 issuers. For the broader market pricing trends shaping these spreads, read our 2026 market map.