
Bridge Rounds: The Runway Math Before You Take One
Ray KowalskiA bridge round buys time for the next real round — and the arithmetic has a verdict: a bridge without a milestone is just a slower way of running out of money.
Seed through late stage rounds reported with structure.

A bridge round buys time for the next real round — and the arithmetic has a verdict: a bridge without a milestone is just a slower way of running out of money.

Venture debt can extend runway a crucial six months without dilution — or convert a struggling company into a controlled liquidation. The difference is what the covenants trigger on.

Ilya Sutskever's SSI raised $2 billion in April 2025 at a $32 billion valuation for a company that promises no products on any near timeline — the purest personnel bet ever priced.

The secondary market turned startup equity from a lottery ticket into a tradable asset — with tender offers, company consent, and price floors deciding who can actually cash out.

The 409A valuation is the number every employee option strike is built on — a conservative, backward-looking appraisal whose gap from the headline round price is deliberate.

Databricks' July 2025 round more than tripled its valuation in seven months — on AI products shipped into an installed base that took twelve years to build.