BTRS Holdings Inc. (Nasdaq: BTRS) is the publicly traded successor entity to Billtrust, a New Jersey-based provider of accounts receivable automation and business payments software, which went public through a merger with South Mountain Merger Corp., a blank-check vehicle sponsored by South Mountain Merger Corp. Sponsor LLC that completed its IPO in 2020. Operating in the financial technology sector, BTRS closed its business combination with Billtrust in January 2021. At the time of this September 2022 8-K filing, the company was subject to a pending go-private acquisition by EQT Partners, announced earlier that year. Visit SpacDesk to access the complete filing history, deal analytics, and sponsor data for BTRS and the broader SPAC universe.