Stoneleigh Partners Acquisition Corp. (ticker: SOC) was a blank-check company sponsored by Stoneleigh Partners, a private equity firm focused on middle-market investing. The vehicle IPO'd in the late 2000s SPAC wave and targeted acquisition opportunities consistent with the sponsor's industrial and consumer sector expertise. On August 10, 2009, the company filed a Form 15-12B with the SEC, formally deregistering its class of securities under Section 12(b) of the Securities Exchange Act and bringing its registered status to a close. The filing reflects the broader attrition seen among SPACs formed in the 2007–2008 vintage during a period of significant market disruption. Sign up for SpacDesk to access the full filing history, sponsor background, and deal-outcome data on SOC and hundreds of other SPAC vehicles.