STEM, Inc. (NYSE: STEM) is an AI-driven energy storage optimization software company that completed its public market debut in April 2021 through a business combination with Star Peak Energy Transition Corp, a SPAC sponsored by Star Peak Capital Management. The transaction closed ahead of this May 2021 S-1 registration filing, which followed the merger's completion. Operating in the clean energy and energy technology sector, STEM provides its Athena software platform to help commercial and industrial customers, utilities, and renewable energy developers intelligently manage battery storage assets. The company is headquartered in San Francisco, California, and trades on the New York Stock Exchange. Sign up for SpacDesk to access the full filing history, deal terms, and sponsor profile for STEM and hundreds of other SPAC transactions.