U.S. Well Services Holdings, LLC filed an 8-K with the SEC on November 5, 2018, in connection with the de-SPAC merger involving Matlin & Partners Acquisition Corporation (Nasdaq: MPAC). The blank-check company, sponsored by Matlin & Partners Capital and focused on the energy sector, completed its IPO in 2016 targeting oilfield services opportunities. The transaction resulted in U.S. Well Services, Inc., a hydraulic fracturing services provider to upstream oil and gas operators, listing on Nasdaq under the ticker USWS. The November 2018 filing marked the culmination of MPAC's business combination in the energy services sector. Sign up at SpacDesk for full filing history, deal timelines, and sponsor analytics on this and other SPAC transactions.