FirstMark Horizon Acquisition Corp. (NYSE: FMAC), sponsored by FirstMark Capital, completed its initial public offering in January 2021, targeting the technology sector in keeping with the sponsor's established venture capital background. The company filed an amended quarterly report, Form 10-Q/A, with the SEC on December 14, 2021, during its search for a business combination target. FirstMark Horizon subsequently announced and closed a merger with Starry, Inc., a fixed wireless broadband internet provider, with the transaction completing in March 2022, at which point FMAC ceased trading as an independent blank-check company. Sign up for full data access on SpacDesk to explore the complete filing history, deal timeline, and analytics for FirstMark Horizon and the broader SPAC market.