Abnormal Security announced on Tuesday that it has secured $250 million in a Series D funding round, elevating its valuation to $5.1 billion. The round, led by Wellington Management, also includes contributions from existing investors such as Greylock Partners, Menlo Ventures, Insight Partners, and the venture arm of CrowdStrike.
Founded in 2018 by former TellApart software architects, Abnormal has achieved significant growth, doubling its size and surpassing $200 million in annualized revenue over the past year. The company now serves over 2,400 customers, including major firms like Maersk, Xerox, and Mattel, representing approximately 17% of the Fortune 500.
Co-founder and CEO Evan Reiser stated that the new funding will support further development of Abnormal’s human behavior AI platform, aimed at enhancing protection against sophisticated email attacks and advancing autonomous AI solutions for clients.
Abnormal specializes in addressing advanced email threats, a critical cybersecurity concern alongside phishing, malware, spam, and vendor fraud. As competition intensifies in the cybersecurity sector—evidenced by Microsoft’s $20 billion revenue in the field and acquisitions of rivals such as Avanan by Check Point Software and Area 1 Security by Cloudflare—the company is positioning itself as a leader in this space.
Abnormal has also expanded its executive team with strategic hires, including Michael DeCesare as president, James Yeager as head of public sector sales, CFO Smita Sanadhya, and chief legal officer Jeff True. These additions underscore the company’s preparation for an eventual initial public offering (IPO), contingent on favorable market conditions.
Reiser noted that while an IPO is a key milestone, the timing will depend on market readiness. Abnormal plans to fill approximately 300 new positions this year, expanding its current workforce of 600 employees.
