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C1

C1

Private
San Francisco, CaliforniaCybersecurityhttps://www.c1.ai/

Last Round

Series B

Oct 28, 2025

Est. Valuation

$350M

Total Funding Raised

$116M

Momentum

Top 25%

of companies Caplight tracks

Company Overview

C1 is a cybersecurity software company that develops an AI-native identity security platform to govern access across human, non-human, and AI identities.

Sector

Cybersecurity

Verticals

Identity & Access, Compliance & Risk, Zero Trust, Cloud Security

Business Model

B2B

Customer Profile

Subscription SaaS

AI Layer

Application

Keywords

identity governance and administrationIGAidentity and access managementIAMidentity securityaccess reviewslifecycle managementaccess provisioningleast privilegeidentity sprawlcompliance automationzero trustaccess governanceAI agent securityworkflow automation

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Caplight Momentum Score

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C1 Comparables

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C1 comparables — related companies by embedding similarity
CompanySimilarityMarket Cap
Lumos
95%
Opal Security
87%
Linx Security
86%

C1 Funding Rounds

Historical fundraising activity

Data table
RoundDateAmount RaisedValuationInvestorsSources
Series BOct 28, 2025
Series A ExtensionAug 8, 2023
Series AJun 23, 2022
SeedApr 5, 2021
SeedNov 20, 2020

Key People

Founding team and executive leadership

Paul Querna

Co-Founder And CTO

Founding Team

C1 Investors

Notable investors and investment history

C1 investors
InvestorRounds
Oregon Venture FundSeries B
Fuel CapitalSeed, Series A
Active CapitalSeed, Series A
GreycroftSeries B
Garuda VenturesSeries A
Operator CollectiveSeries B
CrowdStrike Falcon FundSeries B

Market signals

Structured signals derived from secondary market and firmographic data.

  • Mar 19, 2026

    Launched AI Access Management product extension for unified control plane.

  • Jan 27, 2026

    Will Bengtson appointed as Chief Information Security Officer.

C1 Filings

SEC and related filings with document metadata.

Data table
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C1 Filings

SEC and related filings with document metadata.

Frequently Asked Questions

Common questions about C1's valuation, stock price, and market status.

Firmographic Details

HeadquartersSan Francisco, California
Employee Range144
Year Founded2020
Last FundingOct 28, 2025

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