Every accredited buyer on a secondary marketplace eventually hits the same question: is this price fair? The answer requires understanding three distinct numbers that exist simultaneously for any private company — the primary round valuation, the 409A fair market value, and the secondary market mark. They are related but not equal, and confusing them is one of the most common mistakes buyers make.

The three marks that shape every secondary price

Primary round valuation
The headline number announced when a company closes a venture or growth round. It is set by a negotiation between the company and its lead investor, and it applies to the preferred shares sold in that round — not necessarily to the common shares or options that employees hold.
409A fair market value (FMV)
An independent appraisal of common stock value, required by the IRS before a company can issue options. Because of liquidation preferences and other structural advantages that preferred shareholders hold, 409A values are almost always lower than the primary round valuation — often materially so.
Secondary market mark
The price at which buyers and sellers actually transact in the private secondary market. It reflects supply and demand, liquidity risk, and expectations about the company's trajectory — and it can sit above or below either of the other two numbers depending on market sentiment.

None of these marks is simply wrong. They each answer a different question. The primary valuation answers: what did the last lead investor pay for preferred stock? The 409A answers: what is the IRS-defensible value of a common share for option-grant purposes? The secondary mark answers: what will a willing, informed buyer pay today for exposure to this company's equity upside?

Why primary valuations mislead secondary buyers

The most dangerous error a secondary buyer can make is anchoring to the primary round valuation as if it represents the fair price for what they are buying. It usually does not, for two structural reasons.

First, preferred stock and common stock are not the same asset. Preferred shares typically carry liquidation preferences — meaning preferred holders get paid first in an exit, up to a multiple of their investment, before common holders see anything. In a modest exit, that preference can consume the entire proceeds, leaving common-share exposure worth far less than the headline valuation implies. When you buy on the secondary market through a structure that gives you economics equivalent to common stock, you are not buying what the last primary investor bought.

Second, primary valuations are set at a moment in time, in private, by parties with aligned incentives to mark things higher. A Series E investor who just led a $500M round at a $10B valuation has every reason to justify that price; they are not an independent market. Secondary prices, by contrast, emerge from buyers and sellers who have no obligation to agree — which tends to produce a more honest signal.

A secondary price below a primary round valuation is not automatically a discount. It may simply reflect what the underlying common-equivalent shares are actually worth once you account for liquidation preferences and dilution.

How 409A values enter the picture

The 409A appraisal is the company's own best-effort estimate of common share value, produced by an independent third party, typically updated every twelve months or after a material event like a new funding round. Because of liquidation preferences — and sometimes because of participation rights, anti-dilution provisions, or senior tranches of preferred — the 409A almost always values common stock at a discount to the implied primary valuation. That discount can range from 20% at well-structured companies to 70% or more at companies carrying heavy preferred overhang.

For secondary buyers, the 409A serves as a useful reference floor: if a secondary transaction is pricing below the most recent 409A FMV, you are getting a meaningful concession. If it is pricing above, the secondary market is effectively pricing in upside the 409A's backward-looking methodology does not capture — growth since the last appraisal date, a pending round at a higher price, or strong revenue momentum.

The 409A is a lagging indicator. Companies are only required to update it annually, and in fast-moving sectors the real value of the business may have changed substantially in the intervening months. A secondary market where prices refresh continuously can therefore be more current than the company's own official appraisal.

What secondary prices actually reflect

Secondary prices incorporate several factors that neither the primary valuation nor the 409A account for directly.

  • Liquidity discount: private shares cannot be sold instantly. A buyer requires compensation for the uncertainty of when — and whether — a liquidity event will occur. This discount widens when IPO timelines look uncertain and narrows when a company files an S-1 or announces a tender.
  • Information discount: public-company investors have access to quarterly filings, analyst research, and real-time earnings calls. Secondary buyers rely on whatever the company chooses to share, capped by securities law. Prices reflect that information gap.
  • Structure discount or premium: buying through an SPV (special purpose vehicle) adds a layer of fees and carry, and the buyer holds a membership interest rather than shares directly. A direct transfer, where the buyer appears on the company's cap table as a named shareholder, may command a different price than the same economic exposure held through an SPV.
  • ROFR risk: most private company transfer policies include a right of first refusal (ROFR), allowing the company or its existing investors to match any secondary buyer's price and take the shares instead. If ROFR is likely to be exercised, some sellers price to compensate buyers for the risk that the deal collapses after due diligence time is spent.
  • Seller motivation: a seller facing an option expiry, a liquidity need, or concentration risk may accept a lower price than a patient seller who has flexibility. Secondary prices reflect real seller constraints, not theoretical valuations.

Reading the spread as a signal

When secondary prices trade at a significant premium to the most recent 409A, the market is signaling that it believes the company's real value has grown faster than the appraisal cycle can capture. This can happen legitimately — a company that doubled revenue since its last 409A update is genuinely worth more. It can also reflect speculative enthusiasm that is not yet grounded in fundamentals.

When secondary prices trade at a steep discount to the primary round valuation, the market may be pricing in risk that the last lead investor did not fully price: slowing growth, competitive pressure, a capital structure that is unfavorable to common holders, or simply the liquidity discount discussed above.

Neither signal is automatically a buy or a sell. What matters is understanding why the gap exists — and whether your own analysis of the company agrees with or challenges the market's implied assumptions.

Practical steps before you submit an indication

  1. Find the most recent publicly reported primary round valuation and note its date. Stale valuations from 18 or more months ago carry less weight.
  2. Estimate the 409A range by looking at the discount to preferred that is typical in the sector. If you cannot find it directly, look at Option Impact or comparable public disclosures from similar-stage companies.
  3. Ask the marketplace whether the shares being sold carry common or preferred economics, and whether any liquidation preferences sit above them in the waterfall.
  4. Compare the secondary ask to both references and form a view on whether the gap reflects an identifiable risk or an irrational discount.
  5. Factor in the vehicle: if you are buying through an SPV, model the fee and carry drag on your net return at various exit multiples before finalizing your bid.

At Limen Markets, each listing discloses the structure — direct or SPV — and the underlying share class before you submit an indication of interest. That means you can run this analysis before committing capital, not after. Browse current supply across all 28 issuers on the marketplace to see where secondary prices are sitting relative to the most recent round marks.