How Epirus Plans to Revolutionize Drone Swarm Defense with Leonidas High-Power Microwave System.

Published on March 17, 2025

Epirus has successfully raised $250 million in an oversubscribed Series D funding round, bringing its total funding to over $550 million. This investment is set to accelerate the production of its Leonidas high-power microwave (HPM) system, designed to counter electronic threats, including drones and drone swarms. This advanced technology, which has already demonstrated its effectiveness in tests conducted by the U.S. Department of Defense, offers a modern approach to electronic warfare, capable of neutralizing multiple threats simultaneously with a single operator.

The funding round was led by 8VC and Washington Harbour Partners LP, with participation from returning investors such as StepStone Group, T. Rowe Price Investment Management, Gaingels, and strategic defense partner General Dynamics Land Systems. New investors, including Oppenheimer’s Private Market Opportunities Vista VI Fund, NightDragon, Manhattan Venture Partners, and Centaurus Capital LP, also contributed, reflecting strong confidence in the company's technological capabilities and market potential.

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