Abnormal Security stock & equity tools

Pre-IPO · Cybersecurity

Abnormal Security is pre-IPO. Plan your AMT and NSO exercise tax at any valuation: current 409A FMV, expected IPO price, or post-IPO scenarios.

Beta · invite-only · AlphaLatitude Inc. · Free Tools

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About Abnormal Security

Abnormal Security is a privately held Cybersecurity company, incorporated in Delaware and headquartered in San Francisco, CA.

Last reported secondary-market price: $15.12 per share (as of 2026-06-09). Your own 409A may differ.

Email security.

Equity grants at Abnormal Security typically include incentive stock options (ISOs) and non-qualified stock options (NSOs).

Evan Reiser and Sanjay Jeyakumar founded Abnormal Security in San Francisco in 2018 to detect email attacks, including business email compromise, phishing, and vendor fraud, by modeling the behavioral baseline of every employee and vendor relationship rather than relying on signatures or rules. By mid-2024 the company had reached $200 million in annual recurring revenue with over 3,000 customers. In August 2024 Abnormal closed a $250 million Series D led by Wellington Management at a $5.1 billion valuation. The company rebranded as Abnormal AI in April 2025.

Sources: cnbc.com · news.crunchbase.com

Equity comp at Abnormal Security

  • Pre-IPO cybersecurity company founded 2018 by Evan Reiser and Sanjay Jeyakumar (ex-Twitter); AI-powered email security platform. $250M Series D at $5.1B valuation (September 2024) led by Wellington Management. Standard pre-IPO double-trigger RSU structure (time-based vesting plus liquidity event) applies given private status and IPO trajectory.

Sources: news.crunchbase.com · cnbc.com

Researched 2026-05-11.

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