BTRS Holdings Inc. is the post-merger public company formed when South Mountain Merger Corp (Nasdaq: SMMC), sponsored by South Mountain Sponsor LLC, combined with Billtrust, a B2B payments and accounts receivable automation platform. South Mountain Merger Corp completed its IPO in 2020 and closed the business combination in January 2021, with the surviving entity operating in the financial technology sector under the BTRS ticker on Nasdaq. On June 2, 2022, BTRS Holdings filed an 8-K current report with the SEC under accession number 0001140361-22-021624, representing a routine post-combination disclosure obligation. To access full filing details, deal timelines, and SPAC analytics for BTRS Holdings and hundreds of other transactions, sign up for SpacDesk.