HawkEye 360 has raised an additional $23 million as part of its Series E funding round, with participation from new investors Ghisallo, Principia Growth and Sixty Degree Capital, alongside existing investor Strategic Development Fund.
The latest financing follows a $150 million mix of debt and equity raised by the company in December 2025 to support its acquisition of Innovative Signals Analysis (ISA). HawkEye 360 said the new funds will be used to strengthen its balance sheet and support the ongoing integration of ISA into its operations.
Craig Searle said the additional funding reflects the company’s approach to capital management.
“This additional close reflects our disciplined approach to capital formation,” Searle said. “It strengthens our balance sheet and provides flexibility as we continue integrating ISA, advancing our platform, and managing growth in a thoughtful and deliberate way.”
HawkEye 360 specializes in radio frequency (RF) detection and monitoring services using data collected from its satellite constellation. Earlier this year, the company expanded its network by commissioning three additional satellites.
Separately, HawkEye 360 said it recently received a contract award from a European defense ministry for an electronic warfare program valued at up to $75 million.
Under the agreement, the company will provide subscriptions to its Air Defense and GPS Interference Monitoring services, enabling the government customer to track and assess radio-frequency activity in designated areas.
The company said its RF data services are used by defense, intelligence and commercial customers to monitor communications signals, detect interference and support security operations.
