Sustainable Development Acquisition I Corp. (Nasdaq: SDAC) is a blank-check company formed to pursue a business combination in the sustainability and clean energy sector. The SPAC completed its initial public offering in 2020 and, as of its 10-Q filing dated May 25, 2021 (accession 0001140361-21-018671), remained in the target-search phase. The "I" designation in its name indicates it was structured as the first vehicle in a planned series by its sponsoring team, reflecting a sector-specific focus on companies advancing sustainable development and environmental solutions. SDAC represents a wave of ESG-oriented SPACs that came to market during the 2020–2021 surge. Sign up at SpacDesk for full filings, timeline data, and sponsor analytics on SDAC and hundreds of other SPACs.