{"url_path":"/sec/ctos/8-k/2026-04-27/item-9-01","section_key":"item-9-01","section_title":"Item 9.01 Financial Statements and Exhibits.","topic":"sec","document":{"doc_type":"8-K","doc_date":"2026-04-27","source_url":"https://www.sec.gov/Archives/edgar/data/1709682/0001709682-26-000017-index.html","accession_number":"0001709682-26-000017","cik":"0001709682","ticker":"CTOS","issuer_name":"Custom Truck One Source, Inc.","edgar_url":"https://www.sec.gov/Archives/edgar/data/1709682/0001709682-26-000017-index.html","primary_entity_key":"0001709682","primary_entity_name":"Custom Truck One Source, Inc."},"word_count":85,"has_tables":true,"body_markdown":"Item 9.01. Financial Statements and Exhibits.\n\n(d)    Exhibits.\n\nExhibit No.Description\n\n[99.1](ex991q12026pressrelease.htm)\n\n[Press release of Custom Truck One Source, Inc.](ex991q12026pressrelease.htm)\n\n104Cover Page Interactive Data File (embedded within the Inline XBRL document and contained in Exhibit 101)\n\nSIGNATURE\n\nPursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.\n\nDate:\nApril 27, 2026\nCustom Truck One Source, Inc.\n\n  \n\n/s/ Christopher J. Eperjesy\n\n  Christopher J. Eperjesy\nChief Financial Officer"}