Swarmer Inc. (NASDAQ:SWMR) shares rose 4.

US-based defence tech company Swarmer is acquiring Ukrainian ground robotics maker Ratel Robotics in a cash-and-stock deal worth up to US$224 million.

Swarmer (SWMR) buys Ratel Robotics for up to $224M, merging battlefield-tested UGVs with advanced AI software to boost defense tech.