Expel
PrivateLast Round
Series E
Extension
Oct 3, 2022
Est. Valuation
$1.14B
Total Funding Raised
$288.8M
Momentum
Top 10%
of companies Caplight tracks
Company Overview
Expel operates in Cybersecurity and is based in Herndon, Virginia. Its latest recorded funding round was a Series E Extension round in October 2022.
Expel is a cybersecurity company that provides a managed detection and response (MDR) platform to help organizations identify, investigate, and mitigate security threats.
Sector
Cybersecurity
Verticals
Cloud Security, SIEM, Threat Intelligence, Incident Response, Endpoint Security
Business Model
B2B
Customer Profile
Subscription SaaS, Services & Consulting
AI Layer
Application
Historical Pricing
Historical view of private secondary pricing and transaction trends.
Expel Comparables
Compare Expel with similar companies based on industry and business-model similarity.
| Company | Similarity | Market Cap |
|---|---|---|
| Arctic Wolf | 88% | |
| eSentire | 88% | |
| Critical Start | 85% |
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Expel Funding Rounds
Historical fundraising activity
| Round | Date | Amount Raised | Valuation | Investors | Sources |
|---|---|---|---|---|---|
| Series E Extension | Oct 3, 2022 | ||||
| Series E | Nov 18, 2021 | ||||
| Series D | May 13, 2020 | ||||
| Series C | Jun 19, 2019 | ||||
| Series B | Apr 10, 2018 | ||||
Series A | Sep 26, 2016 |
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Key People
Founding team and executive leadership
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Expel Investors
Notable investors and investment history
| Investor | Rounds |
|---|---|
| Profile Capital Management | Series B |
| Lightbank | Series A, Series B |
| New Enterprise Associates | Series C, Series A, Series B |
| Scale Venture Partners | Series E, Series C, Series E Extension, Series D, Series B |
| Paladin Capital Group | Series C, Series D, Series B, Series E, Series A, Series E Extension |
| Greycroft | Series E, Series C, Series A, Series D, Series B |
| Battery Ventures | Series C, Series A, Series E Extension, Series D, Series B |
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Market signals
Structured signals derived from secondary market and firmographic data.
- Jul 2, 2026
Company disclosed approximately $120M in ARR.
- Mar 23, 2026
Launched new Managed SIEM service at RSAC 2026.
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Recent news
Latest coverage and updates
- hiresNov 10, 2026
Expel hires former Bitdefender president Steve Kelley as CEO on Nov 9th '26 in District of Columbia, replacing Dave Merkel, who remains on its board, and tasks Kelley with using agentic AI to improve SOC efficiency while retaining human oversight.
- launchesNov 10, 2026
Expel debuts Roxy, an agentic AI bot that works alongside human security analysts to automate high-volume standard triage, including email phishing header and metadata analysis.
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Expel 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.
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Frequently Asked Questions
Common questions about Expel's valuation, stock price, and market status.
Is Expel a public or private company?
Expel is a private company.
What is the current stock price of Expel?
Expel is a private company, so its shares have no public market price. Caplight tracks Expel's secondary market activity and provides MarketPrice™ estimates of its share price to Caplight users.
How much is Expel worth (valuation)?
Expel's valuation is estimated at $1.1B based on funding round data.
Can I buy Expel stock?
Expel shares may be available on secondary markets subject to transfer restrictions. Caplight facilitates secondary market transactions for accredited investors.
When was Expel's last funding round?
Expel's most recent funding round was Series E Extension on October 3, 2022.
Who are the main investors in Expel?
Key investors in Expel include Scale Venture Partners, Paladin Capital Group, Index Ventures, CapitalG.
Will Expel IPO soon?
No public IPO plans have been announced for Expel.
How can I track Expel secondary market activity?
Caplight tracks bids, offers, and trades in Expel's shares on secondary markets.