A company ran a Series A process with four months of runway, got a term sheet, lost it in diligence, and had five weeks left.
This is an anonymised composite, not a report about a named company. The situation and numbers are typical rather than reported.
A B2B SaaS at $95k MRR growing about 8% monthly. Sixteen employees, burning $180k a month, and roughly four months of cash when they started raising.
They needed a Series A. Their metrics looked strong on the headline numbers and three funds engaged quickly.
When to start raising, and how much diligence to do on their own numbers first.
They started immediately. Six weeks in they had a term sheet at a valuation they were happy with, and stopped talking to the other two funds to focus on it.
Diligence found that about 40% of revenue came from three customers, and that one of them — 18% of MRR alone — was on a contract expiring in five months with no renewal conversation started. The fund did not walk over concentration itself; they walked because the founders had not flagged it, which made them ask what else had not been flagged.
With five weeks of runway the founders cut to nine people, personally closed the renewal, and raised a small bridge from an existing investor at a flat valuation. They raised a proper A eleven months later at roughly the same price, having lost a year.
What killed the round was not the concentration. Plenty of companies raise with concentrated revenue. It was disclosing it late, and having stopped talking to the alternatives.