Star Peak Energy Transition Corp (Nasdaq: STPK), sponsored by Star Peak Capital, completed its initial public offering in 2020 with a strategic focus on energy transition and clean power infrastructure. The vehicle completed its business combination with Stem, Inc.—an AI-driven energy storage optimization and software company—in April 2021, after which the combined entity began trading on the New York Stock Exchange under the ticker STEM. Stem develops intelligent software for clean energy asset management and grid-scale storage optimization. The company filed a Form 8-K with the SEC on April 14, 2025, as part of standard post-combination reporting obligations. Sign up for SpacDesk to access full filing histories, deal timelines, and sponsor analytics on STPK and the broader SPAC market.