{"schema_version":"secwatch.filing_event.v1","accession":"0001213900-26-111688","form_type":"8-K","ticker":"ARKB","cik":"0001869699","company_name":"Ark 21Shares Bitcoin ETF","filed_at":"2026-10-22T20:01:24+00:00","discovered_at":"2026-10-22T20:02:00.425430+00:00","generated_at":"2026-10-22T20:02:05.820484+00:00","sec_items":["1.02"],"event_type":"other_material","sentiment":"neutral","materiality_score":0.6,"calibrated_materiality_score":0.6,"confidence":"high","headline":"21Shares terminates ARK sub-advisory pact for ARKB; ETF to rename to 21Shares Bitcoin ETF with ticker TBIT","bullets":["Sponsor 21Shares US LLC gave notice on Oct 16, 2026 terminating the Support Services Agreement with ARK Investment Management LLC, effective December 22, 2026.","Under the agreement ARK provided sub-advisory services and marketing assistance to the Trust; the Sponsor terminated it \"pursuant to its terms.\" No termination fees or cost terms were disclosed.","On Dec 15, 2026 the Trust will be renamed \"21Shares Bitcoin ETF\" (from ARK 21Shares Bitcoin ETF) and its Cboe BZX ticker will change from ARKB to TBIT.","No replacement sub-adviser or marketing provider was named, and the filing gives no reason for the termination beyond the contractual right.","Filing signed Oct 22, 2026 by Duncan Moir, President of 21Shares US LLC, as Sponsor of the Trust."],"urls":{"canonical":"https://secwatch.observer/filing/0001213900-26-111688","json":"https://secwatch.observer/filing/0001213900-26-111688.json","markdown":"https://secwatch.observer/filing/0001213900-26-111688.md","text":"https://secwatch.observer/filing/0001213900-26-111688.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1869699/000121390026111688/0001213900-26-111688-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1869699/000121390026111688/ea0309236-8k_ark21shares.htm"},"model":{"generated_by":"deepseek-v4.1-flash:cloud@v2","generated_at":"2026-10-22T20:02:05.820484+00:00"},"review":{"review_status":"machine_generated","human_reviewed":false,"corrected":false,"correction_note":null,"correction_timestamp":null,"superseded_by":null,"related_filings":[]},"source_grounded_claims":[],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}