AMTM

Amentum Holdings, Inc.

A global contractor providing engineering, technology, and mission-critical services to the U.S. government, allied nations, and commercial clients, Amentum handles everything from nuclear cleanup at the Hanford and Savannah River sites to space systems and cybersecurity. It was born in 2020 when AECOM sold its management services business, and in 2024 it merged with Jacobs' critical mission and cyber units. Its name is the Latin word for the leather strap javelin throwers used to add spin and range.