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Clearwater, Florida, United States
KnowBe4 provides Security Awareness Training to help you manage the IT security problems of social engineering, spear phishing and ransomware attacks.
Last updated
In 2017, Knowbe4's revenue reached $60M. Since its launch in 2011, Knowbe4 has shown consistent revenue growth.
Knowbe4 reached a $180M valuation in 2025, set during its M&A Offer round.
Knowbe4 has raised $384.2M in total funding across 5 rounds, with its most recent round in 2019.
| Year | Round | Amount | Valuation | % Sold | Source |
|---|---|---|---|---|---|
| 2025 | M&A Offer | - | $180M | - | |
| 2019 | Funding round | $309.4M | - | - | |
| 2019 | Funding round |
CEO
Stu Sjouwerman is the founder and CEO of KnowBe4, Inc., which hosts the world's most popular integrated Security Awareness Training and Simulated Phishing platform. A serial entrepreneur and data security expert with more than 30 years in the IT industry, Sjouwerman was the co-founder of Inc. 500 company Sunbelt Software, a multiple award-winning anti-malware software company that was acquired in 2010. Realizing that the human element of security was being seriously neglected, Sjouwerman decided to help organizations manage the problem of cybercrime social engineering tactics through new school security awareness training and founded KnowBe4.
| Question | Answer |
|---|---|
| What's your age? | 64 |
| Favorite online tool? | - |
| Favorite book? | - |
| Favorite CEO? | - |
| Advice for 20 year old self | - |
Knowbe4 serves 9.5K customers.
Knowbe4 employs approximately 969 people as of 2026, up from 749 in 2019, including 286 sales reps that carry a quota. It serves 9.5K customers that rely on its solutions.
Knowbe4 generates $60M in revenue.
Knowbe4 was founded by Stu Sjouwerman.
The CEO of Knowbe4 is Stu Sjouwerman.
Knowbe4 raised $384.2M across 5 rounds.
Knowbe4 has 969 employees.
Knowbe4 is headquartered in Clearwater, Florida, United States.
Knowbe4 operates across multiple industries. Browse revenue, funding, and growth data for Knowbe4 in each sector below.
All figures on this page are taken directly from interviews or are estimates from public sources and proprietary models. Not financial advice. Read full disclaimer.
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Valuation
$180M
2017 Revenue
$60M
Customers
9.5K
Funding
$384.2M
Avg ACV
$6.3K
Team · 2020
969
Founded
2011
| Year | Milestone | Source |
|---|---|---|
| 2017 | Knowbe4 Hit $60m revenue in May 2017 | |
| 2011 | Launched with $0 revenue |
| $31.6M |
| - |
| - |
| 2017 | Funding round | $30M | - | - |
| 2017 | Funding round | $5.2M | - | - |
| 2016 | Funding round | $8M | - | - |
| Year | Milestone | Source |
|---|---|---|
| 2020 | Reached 969 employees (December 2020) | |
| 2020 | Reached 845 employees (June 2020) | |
| 2019 | Reached 749 employees (December 2019) | |
| 2018 | Reached 546 employees (December 2018) | |
| 2017 | Reached 290 employees (May 2017) |
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