Founder Profile
Evan Reiser
Last reviewed: September 2026 · By Swet Parvadiya
Who is Evan Reiser?
Evan Reiser is a founder of Abnormal AI, which was founded in 2018 with Sanjay Jeyakumar.
- Company founded
- Abnormal AI
- Founded
- 2018
- Co-founders
- Sanjay Jeyakumar
Background
Reiser started his career doing machine learning research and development at Eastman Kodak. He holds a B.S. in Computer Systems Engineering from Rensselaer Polytechnic Institute.
Founding Story
Evan Reiser co-founded Abnormal in 2018 and has led it as CEO from its launch through its 2024 Series D at a $5.1 billion valuation and the 2025 rebrand to Abnormal AI. Before Abnormal he led product management and machine learning teams for Twitter's advertising business. He co-founded Bloomspot, which JPMorgan Chase acquired, and AdStack, which TellApart acquired. (Exact birth year remains publicly undisclosed).
Sources
This profile does not yet cite a source specific to Evan Reiser. The sources below document the company company rather than the person, so check them against the claims above.
- Abnormal Security launches with $24M Series A from Greylock (2019) (Abnormal AI)
- Greylock: Our investment in Abnormal (Abnormal AI)