# Abnormal AI funding rounds and investors

As of 13 Oct 2026, Abnormal AI has raised $534M across 4 verified rounds on record; latest: $250 million Series D+ led by Wellington Management, announced 6 Aug 2024.

Abnormal AI is a behavioral AI security platform that protects email, identity, and AI—and stops insider threats.

Website: https://abnormal.ai  
Headquarters: San Francisco, CA  
Page: https://fireround.dev/companies/abnormal.ai

## Verified rounds

| Announced | Round | Amount | Lead investors | Other investors | Sources |
| --- | --- | --- | --- | --- | --- |
| 2024-08-06 | Series D+ | $250 million | Wellington Management | Greylock, Menlo Ventures, Insight Partners, CrowdStrike Falcon Fund | [abnormal.ai](https://abnormal.ai/newsroom/press-releases/series-d-5b-valuation) |
| 2022-05-10 | Series C | $210 million | Insight Partners | Greylock, Menlo Ventures | [cooley.com](https://www.cooley.com/news/coverage/2022/2022-05-10-abnormal-security-raises-$210-million-series-c-reaches-$4-billion-valuation) |
| 2020-11-18 | Series B | $50 million | Menlo Ventures | Greylock | [abnormal.ai](https://abnormal.ai/newsroom/press-releases/50m-series-b-funding) |
| 2019-11-19 | Series A | $24M | Greylock | none named | [abnormal.ai](https://abnormal.ai/newsroom/press-releases/launching-24m-series-a-funding-from-greylock), [greylock.com](https://greylock.com/blog/our-investment-in-abnormal-security) |

Source: Fireround (https://fireround.dev), an open-source funding feed. Each round is checked against the pages listed with it.