Armis Security, a cybersecurity unicorn, is in advanced talks to raise hundreds of millions of dollars at a valuation of over $5 billion. The round will also include a secondary sale, allowing some investors and employees to sell their shares. Thoma Bravo is expected to be one of the investors taking part.
The company recently closed a secondary funding round at a $4.5 billion valuation, led by Georgian, an existing investor. According to the media, hundreds of longtime Armis employees in Israel and abroad took part in this round, while the founders and outside investors did not.
In an email to employees on Monday, CEO Yevgeny Dibrov said: “It is true that we are receiving many investment offers – dozens of them. These discussions are ongoing, and as always, once there is something concrete to share, we will update you right away.”
In October 2024, Armis was valued at $4.3 billion when it raised $200 million. That round was led by General Catalyst and Alkeon Capital, with participation from Brookfield and Georgian, along with existing investors like Insight Partners, CapitalG, and One Equity Partners.
The current negotiations show Armis’s value increasing by about $900 million compared to that round.
Over the past year, Armis has grown quickly through several acquisitions. In March 2025, it bought Israeli company Autorio for about $120 million. Autorio focuses on protecting industrial systems and cyber-physical environments and is already generating substantial revenue for Armis. Earlier, in April 2024 Armis acquired another Israeli startup, Silk Security, for $150 million. Silk built a platform to manage cyber threat exposure and risk prioritization. What once earned only a few hundred thousand dollars is now bringing in tens of millions in revenue.
In February 2024, Armis also bought the American company CTCI for around $20 million. CTCI specializes in using AI tools to detect cyber threats.
Armis currently makes around $300 million in yearly revenue and is aiming to go public with an IPO in 2026.
Armis was founded in 2016 by Yevgeny Dibrov (CEO) and Nadir Izrael (CTO). The company has about 850 employees in Israel and other countries. Its customers include big global companies like United Airlines, Colgate-Palmolive, and Mondelez (the parent company of Oreo, Milka, and Toblerone).
Armis’ platform helps organizations monitor, secure, and manage their most important assets. This covers IT systems, operational technology (OT), medical devices, cloud environments, software code, and applications.
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