Every secondary buyer has a mental model that starts with the last primary round. You find the most recent Series C or D headline number, apply a discount that feels appropriate, and work backward to a price per share. It's a reasonable starting point. The problem is that bridge rounds — short-term financing events that sit between labeled primary rounds — can quietly change every variable in that calculation without triggering a headline announcement.

This article walks through what bridge rounds are, what structural features they typically carry, and the specific questions a secondary buyer should ask before pricing a position in a company that has recently closed one.

What a bridge round actually is

A bridge round is interim capital raised between formally named funding rounds. The company needs cash to hit a milestone — a product launch, a regulatory approval, a revenue threshold — that will support a larger round on better terms. Bridge rounds are almost always smaller than the rounds on either side of them, and they close quickly because speed is the point.

The most common structures are convertible notes and SAFEs (Simple Agreements for Future Equity). Both instruments delay the valuation question: instead of pricing shares today, they convert into equity at a future round, usually at a discount to whatever price that future round prices at, sometimes subject to a valuation cap. That delay is useful for the company. For secondary buyers, it creates information gaps.

Convertible note
A short-term debt instrument that converts into preferred equity at the next qualifying round, typically carrying an interest rate, a maturity date, and a conversion discount (commonly 15–25 percent) or a valuation cap — whichever gives the noteholder the lower effective price.
SAFE
A Simple Agreement for Future Equity — not debt, no interest, no maturity. Converts into preferred shares at the next priced round subject to a cap or discount. Increasingly common in seed and bridge stages.
Valuation cap
The maximum pre-money valuation at which a note or SAFE will convert, regardless of the actual round price. A low cap signals how cheaply new capital came in relative to where secondary pricing sits.
Discount rate
The percentage reduction from the next round price at which bridge instruments convert. A 20 percent discount means bridge investors effectively priced the company 20 percent below whatever the next lead investor accepts.

When bridge instruments convert, they create new shares. Those new shares dilute existing equity holders — including any SPV or direct transfer you're holding — before the next headline round even prints. If you priced your secondary purchase against a $10 billion post-money valuation from a Series D that closed eighteen months ago, and a bridge with a $6 billion cap just converted, your effective ownership percentage is now smaller and the implied per-share value of your position may be materially lower.

Why bridge activity doesn't always surface in secondary pricing

Secondary markets price off information, and information on bridge rounds is sparse by design. Companies are not required to publish 8-K-style disclosures — they are private. Investors in the bridge are often subject to confidentiality provisions. The 409A valuation, which reflects the company's internal common-stock fair market value and is the closest thing to a public data point, typically lags the bridge by six to twelve months if it is updated at all between formal rounds.

The practical result: secondary prices sometimes continue trading near the last known primary round mark for months after a bridge has closed, even when that bridge implied a meaningful reset. Sellers who know a bridge has occurred hold pricing power over buyers who do not. That asymmetry is one reason due diligence on secondary transactions should go beyond cap table reading and into financing history.

The most dangerous secondary price is the one anchored to a primary round that is now eighteen months old and followed by undisclosed bridge activity. Age of the last round and presence of interim financing deserve equal scrutiny.

Five questions to ask before buying secondary shares in a recently bridged company

  1. Has the company raised any convertible notes or SAFEs since the last priced round? Ask the seller directly, and review any available cap table documentation for unpriced instruments. Unconverted notes are a liability; converted notes are dilution that has already occurred.
  2. What was the valuation cap or conversion discount on the bridge? Even without knowing the exact terms, the implied cap tells you where sophisticated investors were willing to step in. A cap well below the current secondary ask is a red flag.
  3. What was the stated use of proceeds? Bridges used for payroll extension or burn-rate management carry different risk profiles than bridges tied to a specific product milestone or regulatory event. Operational distress and strategic bridging are not the same thing.
  4. When does the bridge mature or convert? A note with a near-term maturity creates a conversion event — and fresh dilution — that could land during or shortly after your holding period. Model the timing.
  5. Has the company's 409A been updated since the bridge? A stale 409A does not tell you the company is in trouble, but it does mean the most visible internal valuation signal is disconnected from recent financing reality.

How bridge structure interacts with the liquidation waterfall

Bridge notes that convert into preferred equity create a new layer in the liquidation preference stack. If the bridge investors negotiated 1x non-participating liquidation preferences — standard for a clean bridge — the new preferred sits ahead of common equity in any exit scenario below the conversion price. If they negotiated participating preferred, the economics are worse for holders further down the stack, including common shareholders and, frequently, SPV interests backed by common.

Bridge rounds done in distress sometimes carry seniority provisions that jump the queue ahead of existing preferred series. This is uncommon but not rare in late-stage bridge situations. As a secondary buyer taking exposure to any position below the most senior preferred, understanding where a newly converted bridge sits in the waterfall is not optional — it is foundational to your return modeling.

When bridge financing is a neutral or positive signal

Not all bridge activity signals distress. Companies often bridge deliberately to time a larger round for strategic reasons: waiting for a competitor to stumble, delaying until a key hire is in place, or holding out for better macro conditions for a Series E or pre-IPO round. In those cases, the bridge is small, the cap is reasonably close to the prior round valuation, and conversion terms are clean.

In a neutral bridge scenario, the dilution is modest and the company's trajectory is intact. The question for a secondary buyer is still the same — what are the conversion terms, how much dilution is incoming, and where does the new preferred sit — but the answers may support a purchase at a modest discount to the last round rather than a steep haircut.

The discipline is asking the questions regardless of which outcome you expect. Secondary buyers who skip diligence because a company's brand is strong are taking on risks they have not priced.

What to do with the answers

Once you have mapped the bridge terms, the dilution scenario, and the waterfall position, run a simple breakpoint analysis. At what exit valuation does your specific share class — common, preferred, or the SPV's pass-through interest — start receiving proceeds? How much headroom exists between that breakpoint and the current secondary implied valuation? Is the secondary price giving you adequate compensation for the incremental risk the bridge represents?

If the answers support a purchase, they also help you calibrate the right discount. If the answers raise unresolvable concerns, passing is a complete strategy. The secondary market will reprice over time as more information becomes available. Waiting for the next data point — a new primary round, a 409A update, a tender offer announcement — is a legitimate approach.

At Limen Markets, listings across our 28 issuers include available cap table documentation and financing history disclosures where sellers have authorized them. If you want to explore current availability and review deal materials before submitting an indication of interest, start at the marketplace.