Sidus Space Inc. (NASDAQ: SIDU) announced an expansion of its agreement with Lonestar Data Holdings Inc. to build and deliver an additional StarVault orbital data storage payload, according to a company statement.

The amendment extends Sidus Space's involvement in what Lonestar describes as a commercially operational space-based data storage service. The expanded agreement builds on the companies' existing partnership as the StarVault system moves from early missions to commercial deployment.

Sidus Space is currently building the first StarVault payload, scheduled to launch aboard LizzieSat-4 no earlier than fall 2026. The additional payload will expand the overall StarVault network as part of Lonestar's orbital data storage architecture.

"The expansion highlights the strength of our engineering processes and our ability to support increasingly complex payload integrations," said Carol Craig, founder and CEO of Sidus Space.

The Cape Canaveral, Florida-based company operates a 35,000-square-foot space manufacturing, assembly, integration and testing facility. Sidus Space provides satellite manufacturing and technology integration, space-based data solutions, mission planning and operations, and space hardware manufacturing services to government, defense, intelligence and commercial customers.

Lonestar Data Holdings develops data storage and edge processing services for what it describes as a secure network serving terrestrial, space and lunar-based digital infrastructure for enterprise and government customers.