Amitai Ratzon
About Amitai Ratzon
Amitai Ratzon is based in Tel Aviv and has been CEO of Pentera since January 2018. Pentera, formerly Pcysys, was founded in 2015 by Dr. Arik Liberzon. Ratzon joined as CEO and also sits on its board. The company sells automated security validation, which it now calls exposure validation. A company bio says he led it out of stealth through three funding rounds, backed by AWZ Ventures and Blackstone, Insight Partners, and K1 Investment Management with Evolution Equity Partners.
Before Pentera he worked in sales at Israeli fintech companies. He was a sales director at SuperDerivatives, which NYSE acquired in 2013 for a reported $350M. He was the first VP of Sales at Earnix from 2012 to 2016. A LinkedIn-derived profile also lists a VP of Global Sales role at Callvu from 2016 to 2018.
He holds an International Executive MBA from Kellogg and a law degree and business degree from Reichman University. In interviews he has credited his military service and a sales background for how he runs a company.
Public data on his angel activity is thin. PitchBook lists him as an individual angel with one recorded investment. Crunchbase shows the same Arrakis Security seed round. We found no other disclosed angel deals, no fund, and no statement of a check size or investing thesis.
Ratzon took part in the $8M seed round of Arrakis Security, announced in August 2026. Hetz Ventures led the round. Other angels named in press coverage were Mati Staniszewski of ElevenLabs, Ofer Smadari of Torq, and senior Palantir executives. Arrakis is an Israeli company building a platform that discovers enterprise AI agents, profiles their behavior, monitors them in real time, and can block actions or revoke permissions. The company plans to use the funding to grow its research, development and product teams in Israel.
The only disclosed investment is a seed-stage round in an Israeli AI agent security company, so his public focus is cybersecurity and enterprise AI. He has not published a check size, preferred stage or geography. His operating experience is in enterprise go-to-market and scaling security software.
- Arrakis Security: Israeli platform that monitors and governs enterprise AI agents. Ratzon joined its $8M seed round in August 2026.
- pitchbook.com/profiles/investor/1470282-94
- crunchbase.com/person/ofer-smadari
- app.dealroom.co/news/note/arrakis-security-raises-8m-seed-to-secure-en
- israeldefense.co.il/en/node/70059
- linkedin.com/in/amitairatzon
- pentera.io/about-us
- insightpartners.com/ideas/ceo-amitai-ratzons-results-oriented-attitude
- eventible.com/speakers/profile/amitai-ratzon-1825
Investing activity
Amitai Ratzon appears in 1 AI deal tracked by the Lounge deals desk. The rounds are mostly Seed, with a median round size of $8M. The most recent is Arrakis Security (Seed, $8M, Aug 2026).
Amitai Ratzon most often invests alongside Hetz Ventures, Ofer Smadari and Mati Staniszewski, and the companies they back on Lounge are mostly in AI.
Deals
Frequently asked questions about Amitai Ratzon
Is Amitai Ratzon an angel investor in AI?
Yes. PitchBook and Crunchbase list him as an angel in the $8M seed round of Arrakis Security, which builds security for enterprise AI agents, announced in August 2026.
What does Amitai Ratzon do besides angel investing?
He is CEO of Pentera, an exposure validation company, and has led it since January 2018. He also serves on its board.
What is Amitai Ratzon's check size?
It is not public. We found no disclosed check size for him, including in the Arrakis Security round.
What stage does Amitai Ratzon invest in?
His only disclosed investment is a seed round. He has not stated a stage preference publicly.
Should I pitch Amitai Ratzon if I am building AI security or enterprise software?
His only public angel round is in AI agent security, and his operating background is in enterprise security sales and scaling. He has not published a thesis, so a short, specific note about your go-to-market is a reasonable approach.
Is Amitai Ratzon an angel investor?
Yes. Amitai Ratzon invests personally as an angel.
What AI companies has Amitai Ratzon invested in?
Amitai Ratzon's AI investments include Arrakis Security. The 1 round on Lounge are listed on this page with amounts, dates and co-investors.
What stage does Amitai Ratzon invest at?
In the rounds tracked on Lounge, Amitai Ratzon has invested at Seed, with a median round of $8M.
Who does Amitai Ratzon co-invest with?
Amitai Ratzon's most frequent co-investors on Lounge are Hetz Ventures (1 deal), Ofer Smadari (1 deal) and Mati Staniszewski (1 deal).
How can founders reach Amitai Ratzon?
Founders on Lounge can see Amitai Ratzon's contact details in AI Investor Contacts (paid plans), check for a warm introduction through members who worked with them under Warm Paths, and add Amitai Ratzon to their Investor Pipeline to track the conversation.