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C1

C1

Private
San Francisco, CaliforniaCybersecurityhttps://c1.ai

Last Round

Series B

Oct 28, 2025

Est. Valuation

$350M

Total Funding Raised

$111M

Company Overview

C1 operates in Cybersecurity and is based in San Francisco, California. Its latest recorded funding round was a Series B round in October 2025.

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, Cloud Security, Compliance & Risk

Business Model

B2B

Customer Profile

Subscription SaaS, Services & Consulting

AI Layer

Infrastructure

Historical Pricing

Historical view of private secondary pricing and transaction trends.

Pricing history

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Caplight Momentum Score

Proprietary index based on bid/ask volume and sentiment.

Momentum history

Caplight clients track how buyer interest and sentiment change over time.

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C1 Comparables

Compare C1 with similar companies based on industry and business-model similarity.

C1 comparables — related companies by embedding similarity
CompanySimilarityMarket Cap
Lumos
90%
Linx Security
85%
Andromeda Security
84%
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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
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Key People

Founding team and executive leadership

Paul Querna

Co-Founder and CTO

Founding Team

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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
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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.

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Recent news

Latest coverage and updates

  • receives_financingOct 23, 2026

    C1.AI receives a $79M Series B round led by Greycroft.

  • identified_as_competitor_ofOct 15, 2026

    Workday's Rob Enslin identifies C1.AI as SailPoint Technologies, Inc.'s real rival as Asia Pacific and Japan customers ask how to stop experimenting with AI on Oct 16th '26.

  • launchesSep 28, 2026

    C1.AI launches C1 AppHub, a self-hosted platform that deploys, authenticates, and sets permissions for team-built applications, as a public repository in California on Sep 28th '26.

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C1 Filings

Explore SEC and related filing metadata, where available.

C1 filings preview — column headings only; records require access
TypeDateAmount OfferedAmount SoldFilingPagesDownload

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Frequently Asked Questions

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

Is C1 a public or private company?

C1 is a private company.

What is the current stock price of C1?

C1 is a private company, so its shares have no public market price. Caplight tracks C1's secondary market activity and provides MarketPrice™ estimates of its share price to Caplight users.

How much is C1 worth (valuation)?

C1's valuation is estimated at $350.0M based on funding round data.

Can I buy C1 stock?

C1 shares may be available on secondary markets subject to transfer restrictions. Caplight facilitates secondary market transactions for accredited investors.

When was C1's last funding round?

C1's most recent funding round was Series B on October 28, 2025.

Who are the main investors in C1?

Key investors in C1 include Greycroft, Felicis Ventures, Accel.

Will C1 IPO soon?

No public IPO plans have been announced for C1.

How can I track C1 secondary market activity?

Caplight tracks bids, offers, and trades in C1's shares on secondary markets.

Firmographic Details

HeadquartersSan Francisco, California
Employee Range129
Year Founded2020
Last FundingOct 28, 2025

Institutional Data Access

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