Tremisis Energy Acquisition Corp II, ticker TGY, filed its S-1 registration statement with the SEC on August 22, 2007, entering the public markets as a blank-check company focused on the energy sector. The "II" designation indicates the sponsoring group had previously formed a related energy-focused acquisition vehicle, making this a follow-on blank-check effort by the same team. As a 2007-vintage SPAC, Tremisis Energy II was part of the mid-2000s wave of energy-sector blank-check companies seeking to identify and complete business combinations in an era of elevated commodity interest. Its filing predates the large-scale SPAC surge of the 2020s by more than a decade. Sign up at SpacDesk for complete filing history, deal timelines, and analytics on TGY and thousands of other SPAC vehicles.