A bridge round is short-term funding to reach a milestone or a larger round. Whether it is a sign of strength or of trouble depends on what specifically it is meant to reach, and whether anyone new is willing to fund it.
11 min read · Level 5
The most useful question about a bridge is the simplest one: a bridge to what? If the answer is a specific thing on a specific date, the conversation is about whether that milestone is achievable. If the answer is more time, then the round is funding hope, and hope has no milestone at which anyone can tell whether it worked.
A bridge is capital raised between priced rounds, usually from existing investors, usually on a convertible instrument.
The first question is what it bridges to:
Type What it funds Signal Milestone bridge a specific, dated achievement often reasonable Opportunistic bridge capital ahead of a strong round usually a sign of demand Rescue bridge continued operation with no clear plan usually a sign of trouble
The questions that separate them:
Question What a good answer looks like What does this money buy? a specific milestone, dated, measurable Why not raise a priced round now? a reason other than being unable to Is any new investor participating? yes, or a credible explanation What happens if the milestone is missed? a plan, not silence How long does it extend runway? enough to reach the milestone plus a fundraise
A bridge funded entirely by existing investors, with no new participant and no specific milestone, is usually a rescue whatever it is called.
Terms matter too. Bridges often convert at a discount to the next round, which can be generous compensation for risk or an unnecessary transfer from existing holders, depending on how distressed the situation is.
Because bridges are the most common follow-on request, and the least informative one if taken at face value. The word describes the structure, not the situation.
Sequence also matters. A first bridge with a clear milestone is ordinary. A third bridge with the same story each time indicates the milestone is not being reached and the money is funding time rather than progress.
Educational, not personalised financial advice. Nothing in the Investor Academy is a recommendation to buy, sell or hold anything — what is right for you depends on your own circumstances and the rules where you live.
Two bridges, each 500,000 from existing investors.
Question Company A Company B What it buys reach 100,000 monthly revenue, from 62,000 "extend runway" Priced round? waiting until the metric supports it could not raise New investor? one new angel joining none If missed? reduce costs to reach profitability no plan stated Runway extension 9 months 5 months Prior bridges none two
A is buying a specific improvement with a fallback. B is buying time on its third attempt, with no new investor willing to price the risk. Both are called bridge rounds.
Evaluating a bridge on its terms - the discount or cap - before establishing what it funds and whether anyone new is willing to participate.
Require something specific, dated and measurable rather than extended runway.
An outside investor willing to join is meaningful validation; their absence deserves an explanation.
Ask how many there have been and what each was meant to achieve.
Confirm the extension covers the milestone plus the months needed to raise afterwards.
Decide whether you would fund this situation as a new investor at these terms.
Whenever an existing portfolio company asks for bridge financing.
Do not treat all bridges as warning signs. Companies raise them for good reasons, including when a specific milestone will materially improve the terms of the next round.
Investors commonly describe companies raising two or three consecutive bridge rounds from existing backers, each extending runway by a few months without changing the trajectory, before eventually winding down with more capital lost than if the first bridge had been declined.
Track the sequence. The second and third bridges deserve a far higher standard of evidence than the first.
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