Pershing Square Tontine Holdings (NYSE: PSTH), sponsored by Bill Ackman's Pershing Square Capital Management, was among the most closely watched blank-check vehicles of the 2020 SPAC boom, completing its IPO in July 2020 with a focus on acquiring a mature, high-quality private business across a broad range of industries. The company drew sustained market attention for its unconventional structure and a proposed business combination with Universal Music Group that did not ultimately proceed. PSTH filed Form 15-12G with the SEC on August 5, 2022, deregistering its securities and formally terminating the vehicle without completing an acquisition. Sign up at SpacDesk for full filings, timeline data, and analytics on PSTH and the broader SPAC universe.