Callsign raised €30M in a Series A round in Aug 2017. The company is based in UK. Investors in the round: Accel Partners, Allegis Capital, NightDragon Security and 1 other. Data as of 7 Aug 2026.
Confidence is the weaker of amount-FX and source evidence (the cascade rule). See methodology.
This is the company's only recorded round.
