Power Law company profile

Callsign

Cybersecurity · London, United Kingdom · Founded 2011 Colt

Real time AI driven Identity and Authentication Solutions, that confirm the user really is who they say they are, at work and at home

Valuation

$100–500M

Latest valuation · 2026

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Revenue

$10–50M

Latest reported FY

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Headcount

100–500

Current team size

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Featured in $1B+ revenueColt · Power Law growth-stage

Investors

8 investors on Callsign's cap table

Sourced from Dealroom's funding history. Investor profile links are shown where available.

Seed 2 investors entered at this stage

Terry Eger

Breed Reply

Series A 5 investors entered at this stage

PTB Ventures

AllegisCyber Capital

Accel

Qualcomm Ventures

NightDragon

Series B+ 1 investor entered at this stage

Abu Dhabi Investment Office

Global footprint

Where Callsign has talent and traffic

AI talent share

2.6% of workforce is AI talent
(7 of 274 staff)

Core AI31.09%

Other AI41.46%

Non-AI workforce26797.45%

Workforce by country

🇬🇧 United Kingdom · London HQ

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Web traffic by country

9.7K monthly visits
across markets

🇺🇸 United States32%

🇬🇧 United Kingdom30.9%

🇦🇪 United Arab Emirates18.6%

🇮🇳 India14.4%

🇵🇹 Portugal3.1%

Top 5 markets shown

Market sentiment

What the market is saying about Callsign

An AI-synthesized read of the highest-engagement posts about Callsign on X over the past 7 days. We rank by likes & retweets, ignore corporate channels, and surface the themes that broke out from real people.

Reading the room on X — pulling top posts and synthesizing themes…

Source: X recent search ranked by engagement (likes + retweets) · Synthesis by Claude · Cached for 1 hour

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