Sustainable Development Acquisition I Corp. (Nasdaq: SDAC) is a blank-check company that completed its initial public offering in 2021, targeting the sustainability and clean-energy sector. The SPAC is sponsored by affiliates of Sustainable Development Capital LLP, a London-based investment firm specializing in energy efficiency and sustainable infrastructure. SDAC filed an 8-K with the Securities and Exchange Commission on December 29, 2022, under accession number 0001839882-22-030455, reflecting a material disclosure during its active search for a target business. The vehicle remains part of a cohort of ESG-focused SPACs that emerged during the 2020–2021 issuance wave. Investors and analysts tracking SDAC's status, filings, and deal pipeline can sign up for full data and real-time alerts on SpacDesk.