U.S. Well Services Holdings, LLC is an oilfield services company specializing in hydraulic fracturing and pressure pumping for upstream operators across U.S. shale basins. Filing under CIK 0001670349, the company submitted this Form 10-Q on August 4, 2017, reporting quarterly financial results as a private reporting entity during a period of recovering domestic pressure pumping demand. U.S. Well Services subsequently entered public markets through a business combination with Matlin & Partners Acquisition Corporation, a SPAC sponsored by Matlin & Partners, with the merger closing in November 2018 and the combined company trading on Nasdaq under the ticker USWS. Sign up on SpacDesk for full data and filings on this de-SPAC transaction and the broader SPAC universe.