Signal AI
PrivateLast Round
Growth Equity
Sep 24, 2025
Est. Valuation
$200M
Total Funding Raised
$266.44M
Momentum
Top 25%
of companies Caplight tracks
Company Overview
Signal AI is a software company that provides an AI-powered external intelligence platform for media monitoring, reputation management, and enterprise risk intelligence.
Sector
AI, Data & Cloud Infrastructure
Verticals
Business Intelligence, Compliance & Risk, NLP & Conversational AI, Marketing, News & Media
Business Model
B2B
Customer Profile
Subscription SaaS, Data as a Service
AI Layer
Application
Keywords
Historical Pricing
Historical view of private secondary pricing and transaction trends.
Signal AI Comparables
Compare Signal AI with similar companies based on industry and business-model similarity.
Signal AI Funding Rounds
Historical fundraising activity
| Round | Date | Amount Raised | Valuation | Investors | Sources |
|---|---|---|---|---|---|
| Growth Equity | Sep 24, 2025 | ||||
| Series D | Dec 15, 2021 | ||||
| Series C | Oct 22, 2019 | ||||
| Series B | Jun 27, 2018 | ||||
| Series A | Dec 13, 2016 | ||||
Seed | Oct 9, 2015 |
Signal AI Investors
Notable investors and investment history
| Investor | Rounds |
|---|---|
| Kreos Capital | Series B |
| Aberdeen Group plc | Series D |
| LocalGlobe | Series A, Series B |
| M25 | Seed |
| Hearst Ventures | Series D, Series A, Series B, Series C |
| Kreos Capital | Series B |
| Mercuri | Growth Equity, Series C, Series B |
Market signals
Structured signals derived from secondary market and firmographic data.
- Aug 2, 2026
Grew 20% QoQ, from 234 to 281 employees.
- Jul 25, 2026
Monthly visitors increased 87% MoM.
Recent news
Latest coverage and updates
- launchesSep 8, 2026
Signal AI launched Smart Search on Sep 8th '26.
- integrates_withAug 3, 2026
Signal integrated with Microsoft Corp. on Aug 3rd '26.
Signal AI Filings
Explore SEC and related filing metadata, where available.
| Type | Date | Amount Offered | Amount Sold | Filing | Pages | Download |
|---|
Filing documents are not displayed on this public page. Request access to learn about available coverage.
Request accessFrequently Asked Questions
Common questions about Signal AI's valuation, stock price, and market status.
Is Signal AI a public or private company?
Signal AI is a private company.
What is the current stock price of Signal AI?
Signal AI is a private company with no public stock price. No recent secondary market data is available.
How much is Signal AI worth (valuation)?
Signal AI's valuation is estimated at $200.0M based on funding round data.
Can I buy Signal AI stock?
Signal AI shares may be available on secondary markets subject to transfer restrictions. Caplight facilitates secondary market transactions for accredited investors. Visit https://www.caplight.com to learn more.
When was Signal AI's last funding round?
Signal AI's most recent funding round was Growth Equity on December 15, 2021.
Who are the main investors in Signal AI?
Key investors in Signal AI include Battery Ventures, Redline Capital Management, MMC Ventures, Frontline Ventures, Highland Europe.
Will Signal AI IPO soon?
No public IPO plans have been announced for Signal AI.
How can I track Signal AI secondary market activity?
Caplight tracks bids, offers, and trades for private companies. Visit https://www.caplight.com to monitor Signal AI's secondary market activity and sign up for updates.