Israeli startups raised $1.635 billion across 22 funding rounds in December, marking the strongest month for venture funding in the country since 2022 and the highest monthly total recorded this year.

Several late-stage financings, alongside a steady flow of early-stage deals, combined to produce a level of activity not seen in three years.

The largest single round came from Cyera, the data security company, which raised $400 million at a $9 billion valuation in a Blackstone-led round, increasing its valuation sixfold in little more than a year. The deal alone accounted for nearly a quarter of the month’s total funding.

Another major contributor was Eon, which raised $300 million in a Series D round at a $4 billion valuation, bringing its total funding to more than $500 million since emerging from stealth last year.

Cybersecurity dominated the funding landscape, continuing a long-running trend in Israeli tech. In addition to Cyera, Vega raised $120 million in a Series B round, valuing the two-year-old company at $700 million, while 7AI, founded by former Cybereason executives, secured $130 million in a Series A round just ten months after exiting stealth. Zafran raised $60 million, doubling its valuation, while Act Security closed a rapid $40 million Series A only four months after a $20 million Seed round.

Healthcare and life sciences also featured. Syremis raised $165 million in a Series A to develop treatments for schizophrenia and other severe mental illnesses.

Artificial intelligence-focused startups attracted sustained interest across multiple stages. Port raised $100 million in a Series C at an $800 million valuation to support AI agents across software development, while Quantum Art, a Weizmann Institute spin-off, raised $100 million to scale full-stack quantum systems.

See the full list of December’s funding rounds below. (The list includes all officially announced rounds above $5 million.)

Act Security closes a rapid Series A only four months after a $20 million Seed round

Teva veterans launch a new drugmaker targeting long-neglected psychiatric conditions

The AI-driven company expands its footprint with the acquisitions of Ubiquitous and Bambassadors amid rising M&A across influencer marketing

The Israeli data security company has increased its valuation sixfold in little more than a year

Accel leads the round as the former Unit 8200 founders continue a rapid fundraising streak in enterprise cybersecurity

The startup says defenders need environment-specific answers in minutes, not weeks

Founded by serial entrepreneurs and former Unit 8200 veterans, Echo aims to replace standard cloud infrastructure with a streamlined, secure AI-native operating system, already deployed at leading organizations

The Israeli startup founded by Roee Adler, May Walter, and Lemonade CEO Shai Wininger unveils real-time production visibility for both engineers and AI agents

The Israeli startup’s Agentic Engineering Platform handles software lifecycle from code to production

The Weizmann Institute spin-off aims to achieve commercial quantum advantage in just two years

The Israeli startup’s PeopleOS helps HR teams turn employee feedback into actionable insights while automating payroll, time-off, and performance management

After deploying across 35 U.S. states, the year-old company is already generating $3M ARR and targeting profitability by early 2026

The Israeli startup targets Fortune 500 clients as demand surges for coverage against cloud and data-center outages

Prime Security accelerates its expansion after winning Black Hat’s Startup Spotlight and attracting dozens of enterprise clients

The Israeli startup introduces Agentic Revenue Integrity, a real-time automation engine for quote-to-revenue operations

Israeli startup Lumia aims to provide network-level visibility and policy enforcement across thousands of AI applications

Ten months out of stealth, the startup reports 99% reductions in false positives across global deployments

The Israeli startup’s RLHF-driven system evolves every message, from imagery to microcopy, based on how individual users respond

Imper.ai’s founders say deepfake and voice-cloning attacks are now “one of the biggest drivers of financial loss,” as enterprises adopt the startup’s prevention-first platform

CEO Sanaz Yashar says the company has turned down multiple acquisition offers as demand for its AI-driven CTEM platform surges

The Israeli cloud startup, which has raised over $500 million since coming out of stealth last year, automates backups and transforms dormant databases into actionable insights

Led by an Iron Dome veteran, JFrog co-founder and ex–Foreign Ministry Director, Moonshot Space has assembled a mix of defense engineers, diplomats, and space-program veterans

Startup doubles its target as investors back technology that compresses months of planning into minutes