Ondas Holdings plans to expand U.S. manufacturing of its ULTRA long-endurance intelligence, surveillance, and reconnaissance (ISR) aircraft. The company is targeting production of 10 aircraft per month by 2028 to meet demand from the U.S. Air Force and other allies.

To support the expansion, Ondas has entered into a definitive agreement to acquire Stemme GmbH, the German manufacturer of the ULTRA’s airframe. The all-cash deal is intended to secure Ondas’ supply chain and accelerate ULTRA production.

The acquisition is expected to close in the first quarter of 2027, subject to regulatory approvals.