Hermeus Raises $350M Series C for Supersonic Unmanned Aircraft
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Hermeus Raises $350 Million Series C for Supersonic Unmanned Aircraft

The round, led by Khosla Ventures, will speed up the delivery of high-Mach drones for defense.

4/7/2026
Ghita Khalfaoui
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Defense aviation innovator Hermeus has secured $350 million in a Series C funding round, achieving a post-money valuation of $1 billion. Led by Khosla Ventures, the investment is earmarked to accelerate the development and delivery of high-Mach unmanned aircraft for national security. This significant capital infusion marks a pivotal moment for the company as it advances its hypersonic platform capabilities.


Strategic Capital for Advanced Development

The financing package consists of $200 million in equity and $150 million in debt, bringing Hermeus's total capital raised to over $500 million. This strategic funding will enable the company to transition from prototyping to producing mission-ready, high-speed platforms. The capital is essential for scaling operations and meeting the demands of its national security customers.

Accelerating Towards Hypersonic Flight

Hermeus is building on recent technical achievements, including the successful flight of its Quarterhorse Mk 2.1 prototype. With supersonic flight now imminent, the team is focused on scaling to a fleet of three F-16 scale aircraft. This progress accelerates the company's path toward achieving Mach 3 flight and beginning customer payload integration.

Expanding Operational Footprint

To support its ambitious goals, the company is expanding its physical footprint with a new headquarters in El Segundo, California. This facility will serve as the hub for its prototyping efforts, fostering rapid innovation and development. Meanwhile, the existing Atlanta facility will transition its focus to full-scale production to meet future demand.

Investor Confidence and Vision

AJ Piplica, Founder and CEO of Hermeus, emphasized the importance of speed in their operations. He stated the new funding allows for simultaneous aircraft construction and scaled manufacturing, accelerating the path to ramjet-powered flight. Piplica expressed gratitude for the support of partners who share the company's vision for rapid development.

Investor confidence is strong, with Vinod Khosla of Khosla Ventures highlighting the team's clear trajectory in solving a critical capability gap. New investors, including Cox Enterprises and Socium Ventures, also expressed their support, with Andrew Davis calling the round an important inflection point. This broad backing validates the company's approach and mission in the defense sector.

A Hardware-First Approach to Defense

The company's rapid progress is underpinned by its hardware-first execution model, which prioritizes building and testing. This approach significantly shortens the timeline from initial design to operational deployment for its advanced aircraft. It allows for the validation of sustained high-Mach flight under realistic conditions to meet modern defense challenges.


This $350 million funding round solidifies Hermeus's position as a formidable force in the defense aviation industry. The investment not only provides the necessary capital for expansion and production but also serves as a powerful endorsement of its innovative strategy. Hermeus is now better equipped than ever to deliver transformative high-speed capabilities for national security applications.