Momentus is trading at $3.93, up 6.22%, with no confirmed company-specific catalyst identified for the September 30 gain. - A September 29 announcement reported successful NASA-satellite rendezvous and proximity operations, completing the demonstration’s primary and extended objectives. - The operational news is positive, but coverage does not establish it caused the September 30 move; shares closed down 8.19% on September 29. - The provided market context is mixed and does not clearly explain the rise.