{"filing":{"accession_number":"0001213900-26-111688","cik":"0001869699","ticker":"ARKB","company_name":"Ark 21Shares Bitcoin ETF","form":"8-K","filing_date":"2026-10-22","report_date":"2026-10-16","primary_document":"ea0309236-8k_ark21shares.htm","primary_document_url":"https://www.sec.gov/Archives/edgar/data/1869699/000121390026111688/ea0309236-8k_ark21shares.htm"},"events":[{"id":37182,"run_id":34280,"accession_number":"0001213900-26-111688","anchor_item_number":"1.02","event_type":"operational_other","event_domain":"operational","is_material":true,"confidence":0.75,"summary":"The filing discloses termination of a material marketing and sub-advisory services agreement between the Sponsor (21Shares US LLC) and ARK Investment Management LLC, effective December 22, 2026. This is a material operational event affecting the Trust's service provider relationships and brand identity, evidenced by the planned name change from \"ARK 21Shares Bitcoin ETF\" to \"21Shares Bitcoin ETF\" and ticker symbol change from ARKB to TBIT. While Item 1.02 typically covers M\u0026A terminations, this disclosure centers on the termination of an ongoing service agreement rather than a material acquisition or disposition, making it an operational matter affecting the Trust's business continuity and marketing support.","company_name":"Ark 21Shares Bitcoin ETF","ticker":"ARKB","filing_date":"2026-10-22","form":"8-K","submitted_at":null,"items":[{"id":41817,"accession_number":"0001213900-26-111688","item_number":"1.02","item_title":"Termination of a Material Definitive Agreement.","event_type":"operational_other","event_domain":"operational","is_material":true,"confidence":0.75,"reasoning":"The filing discloses termination of a material marketing and sub-advisory services agreement between the Sponsor (21Shares US LLC) and ARK Investment Management LLC, effective December 22, 2026. This is a material operational event affecting the Trust's service provider relationships and brand identity, evidenced by the planned name change from \"ARK 21Shares Bitcoin ETF\" to \"21Shares Bitcoin ETF\" and ticker symbol change from ARKB to TBIT. While Item 1.02 typically covers M\u0026A terminations, this disclosure centers on the termination of an ongoing service agreement rather than a material acquisition or disposition, making it an operational matter affecting the Trust's business continuity and marketing support.","classifier_version":"claude-haiku-4-5-20251001+prompt-a85dd512","taxonomy_version":"v1.3","classified_at":"2026-10-22T20:03:42.223728+00:00","company_name":"","ticker":null,"filing_date":""}]}],"classifications":[{"id":41817,"accession_number":"0001213900-26-111688","item_number":"1.02","item_title":"Termination of a Material Definitive Agreement.","event_type":"operational_other","event_domain":"operational","is_material":true,"confidence":0.75,"reasoning":"The filing discloses termination of a material marketing and sub-advisory services agreement between the Sponsor (21Shares US LLC) and ARK Investment Management LLC, effective December 22, 2026. This is a material operational event affecting the Trust's service provider relationships and brand identity, evidenced by the planned name change from \"ARK 21Shares Bitcoin ETF\" to \"21Shares Bitcoin ETF\" and ticker symbol change from ARKB to TBIT. While Item 1.02 typically covers M\u0026A terminations, this disclosure centers on the termination of an ongoing service agreement rather than a material acquisition or disposition, making it an operational matter affecting the Trust's business continuity and marketing support.","classifier_version":"claude-haiku-4-5-20251001+prompt-a85dd512","taxonomy_version":"v1.3","classified_at":"2026-10-22T20:03:42.223728+00:00","company_name":"Ark 21Shares Bitcoin ETF","ticker":"ARKB","filing_date":"2026-10-22"}]}