Fundraising FoxKnowbe4
Tampa, US · Delaware corporation · 9 known investors
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KnowBe4 provides security awareness training, simulated phishing attacks, and AI-powered human risk management for organizations worldwide. The platform helps enterprises secure both human employees and AI agents against cybersecurity threats through attack simulation, training, and behavioral security interventions.
Founders & leadership
SS
Stu SjouwermanFounder, Executive ChairmanStu Sjouwerman is co-founder and CEO of ReadingMinds.ai, an AI platform for analyzing customer sentiment and intent. He previously co-founded KnowBe4 and Sunbelt Software, bringing decades of experience in IT, scaling organizations, and technology development.
BP
Bryan PalmaHe previously served as CEO of Trellix from 2021 to 2025, as president and COO of BlackBerry, and as senior vice president and general manager at Cisco, where he led the Advanced Services and Customer Experience Americas organizations. He has also held board seats at CloudBees and TPx Communications, advised Siris Capital Group, and serves on the U.S. National Security Telecommunications Advisory Committee.
Investors · 9
Vista Equity Partners✓ confirmed by Knowbe4New York
How we know: the company's own site · Vista Equity Partners's portfolio page · Not right? Tell us
Elephant Partners✓ confirmed by Knowbe4Bostonvia Jeremiah Daly · board
How we know: the company's own site · board seat on SEC Form D · Not right? Tell us
Crosslink Capitallisted by Crosslink CapitalMenlo Park · $1M – $9M
How we know: Crosslink Capital's portfolio page · the VCSheet dataset · Not right? Tell us
March Capital Partnerslisted by March Capital PartnersSanta Monica
How we know: March Capital Partners's portfolio page · a partner's Signal profile · the VCSheet dataset · Not right? Tell us
Ten Elevenlisted by Ten ElevenBurlingame · $3M – $15M
How we know: the VCSheet dataset · Not right? Tell us
Blumberg CapitalreportedMiami · $500K – $5M
How we know: funding news · finance.yahoo.com · Not right? Tell us
Goldman SachsreportedNew York
How we know: a partner's Signal profile · Not right? Tell us
Gradient VenturesreportedSan Francisco · $100K – $10M
How we know: funding news · calcalistech.com · Not right? Tell us
Kohlberg Kravis RobertsreportedNew York
How we know: a partner's Signal profile · Not right? Tell us
Funding
SEC filings, press & company announcements$390.2M disclosed across 6 of 7 rounds · 2016–2025
- $6MSeed roundOct 2025 · 2 sources
Blumberg Capital (lead), Gradient Ventures (lead)
Source ↗ - Undisclosed amountSeries AJan 2025Source ↗
▶$309.4MraisedJun 2019 · 7 investors · Other TechnologyRule 506(b)
▶$309.4MraisedJun 2019 · 7 investors · Other Technology
Rule 506(b)Officers, directors & promoters on the filing
- Alex EckelberryDirector
- Lars LetonoffExecutive Officer
- Sjoerd SjouwermanExecutive Officer, Director
- Jeremiah DalyDirector
- Shrikrishna VenkataramanExecutive Officer
- Joseph DiSabatoDirector
- Stephen ShanleyDirector
- Kevin MitnickDirector
- Offering amount
- $309.4M
- Amount sold
- $309.4M
- Proceeds to insiders
- $308.7M
- First sale
- Jun 2019
- Incorporated
- Corporation, Delaware
- Federal exemptions
- 06b
▶$31.6MraisedMar 2019 · 2 investors · Other TechnologyRule 506(b)
▶$31.6MraisedMar 2019 · 2 investors · Other Technology
Rule 506(b)Officers, directors & promoters on the filing
- Lars LetonoffExecutive Officer
- Sjoerd SjouwermanExecutive Officer, Director
- Shrikrishna VenkataramanExecutive Officer
- Hans ShermanDirector
- Alex EckelberryDirector
- Jeremiah DalyDirector
- Kevin MitnickDirector
- Offering amount
- $31.6M
- Amount sold
- $31.6M
- Proceeds to insiders
- $10.3M
- First sale
- Feb 2019
- Incorporated
- Corporation, Delaware
- Federal exemptions
- 06b
▶$30MraisedOct 2017 · 4 investors · Other TechnologyRule 506(b)
▶$30MraisedOct 2017 · 4 investors · Other Technology
Rule 506(b)Officers, directors & promoters on the filing
- Sjoerd SjouwermanExecutive Officer, Director
- Jeremiah DalyDirector
- Kim FurlinExecutive Officer
- Kevin MitnickDirector
- Lars LetonoffExecutive Officer
- Alex EckelberryDirector
- Offering amount
- $30M
- Amount sold
- $30M
- Proceeds to insiders
- $2M
- First sale
- Oct 2017
- Incorporated
- Corporation, Delaware
- Federal exemptions
- 06b
▶$5.2MraisedMar 2017 · 1 investors · Other TechnologyRule 506(b)
▶$5.2MraisedMar 2017 · 1 investors · Other Technology
Rule 506(b)Officers, directors & promoters on the filing
- Kim FurlinExecutive Officer
- Jeremiah DalyDirector
- Sjoerd SjouwermanExecutive Officer, Director
- Alex EckelberryDirector
- Kevin MitnickDirector
- Offering amount
- $5.5M
- Amount sold
- $5.2M
- Proceeds to insiders
- $2.6M
- First sale
- Feb 2017
- Incorporated
- Corporation, Delaware
- Federal exemptions
- 06b
▶$8MraisedFeb 2016 · 1 investors · Other TechnologyRule 506(b)
▶$8MraisedFeb 2016 · 1 investors · Other Technology
Rule 506(b)Officers, directors & promoters on the filing
- Sjoerd SjouwermanExecutive Officer, Director
- Offering amount
- $8M
- Amount sold
- $8M
- Proceeds to insiders
- $3M
- First sale
- Jan 2016
- Incorporated
- Corporation, Delaware
- Federal exemptions
- 06b
Source: SEC EDGAR Form D. Amounts as filed; amended filings shown once at their latest values.
Related companies · 10
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CrowdStrikeCrowdStrike provides an AI-native cybersecurity platform that unifies endpoint, identity, cloud, SaaS, and AI protection to detect and stop breaches for enterprise organizations. It combines automated response with human-led security operations including managed detection and response, threat hunting, and security services.
CloudflareCloudflare provides a global cloud network platform delivering security, performance, and development services through sixty-plus integrated services including SASE, application security, and full-stack development infrastructure.
Check Point SoftwareCheck Point Software Technologies is a cybersecurity company providing security products and solutions. This page is its investor relations section, containing annual reports, SEC filings, financial results, and corporate governance information.
CiscoCisco Systems designs and sells networking hardware, software, and services—including routers, switches, and cloud-based applications—to enterprise, service provider, and consumer markets globally.
MalwarebytesMalwarebytes provides consumer and small-business cybersecurity software, including antivirus and web protection, a privacy VPN, ad/tracker blocking, and identity theft monitoring with insurance. It also offers a browser extension that blocks unsafe content and detects tech support scams, plus a tool for checking suspicious links and screenshots.
Trend MicroTrendAI (Trend Micro) provides enterprise cybersecurity through its TrendAI Vision One platform, which unifies endpoint, network, cloud, and identity security with XDR visibility, threat intelligence, and AI-focused threat protection. It serves enterprise customers across 185 countries, including hybrid cloud, virtualized data center, and modern SOC environments.
SpiceworksSocial business network for IT that is transforming how $1 trillion worth of technology products and services is marketed and sold each year to small and mid-sized businesses worldwide.
Sentinel OneSentinelOne provides an AI-powered cybersecurity platform for enterprises that integrates endpoint protection, threat detection, and incident response capabilities. The company serves large enterprises, including many Fortune 500 organizations, to protect against cyber threats at scale.
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Companies working in the same space as Knowbe4.
Frequently asked questions
- What does Knowbe4 do?
- KnowBe4 provides security awareness training, simulated phishing attacks, and AI-powered human risk management for organizations worldwide. The platform helps enterprises secure both human employees and AI agents against cybersecurity threats through attack simulation, training, and behavioral security interventions.
- Who founded Knowbe4?
- Knowbe4 was founded by Stu Sjouwerman.
- Who are Knowbe4's investors?
- Knowbe4's investors include Vista Equity Partners, Elephant Partners, Crosslink Capital, March Capital Partners, Ten Eleven, Blumberg Capital, Goldman Sachs, Gradient Ventures and 1 more.
- How much funding has Knowbe4 raised?
- Knowbe4 has disclosed $390.2M raised across 6 of its 7 known rounds.
- Where is Knowbe4 headquartered?
- Knowbe4 is headquartered in Tampa, US.