Saronic raises $1.75B in Series D

Saronic, the Austin-based defense technology firm specializing in autonomous sea vessels, has secured $1.75 billion in a Series D funding round led by Kleiner Perkins. This round elevates Saronic’s valuation to $9.25 billion, a substantial increase over its previous valuation in 2025. The capital injection underscores the growing investor enthusiasm for autonomous maritime technology within the broader defense and robotics sectors.

The funding round positions Saronic to expand its development of automated sea vessels, a niche yet increasingly critical segment of the defense industry. The Series D infusion, which brings the company's total funding to approximately $2.6 billion, is co-supported by existing investors and marks the company as a significant player in the field. The successful fundraising reflects a broader trend in which venture capitalists are vigorously backing innovative companies leveraging embodied AI — artificial intelligence systems capable of interacting with the physical world.

The strategic rationale for the funding is to accelerate Saronic’s product development and potential scale-up of operations. The firm plans to enhance its fleet of autonomous vessels, which hold promise for both military applications and commercial maritime logistics. This expansion aligns with defense industry priorities as governments worldwide seek to modernize naval capabilities with cutting-edge technologies that offer increased efficiency and reduced human risk.

The defense sector has been witnessing an infusion of capital into tech startups, especially those with autonomous capabilities, as traditional defense contractors explore augmenting their portfolios with innovative tech-led solutions. Saronic’s funding event echoes the broader surge in venture funding for robotics and AI-focused enterprises, which have so far raised a record $18.8 billion globally in 2026, surpassing the total in 2025.

Looking forward, Saronic will need to navigate the regulatory landscape, particularly surrounding defense technology and autonomous systems, which often face stringent compliance and operational scrutiny. As it advances towards deploying its technology in real-world scenarios, meeting these requirements will be a critical milestone.