secwatch.observer — SEC 8-K summary
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Issuer:     Ark 21Shares Bitcoin ETF (ARKB)
CIK:        0001869699
Form:       8-K
Filed at:   2026-10-22T20:01:24+00:00
Accession:  0001213900-26-111688
Event type: other_material
Sentiment:  neutral
Materiality: 0.60
Item codes: 1.02
LLM model:  deepseek-v4.1-flash:cloud@v2

21Shares terminates ARK sub-advisory pact for ARKB; ETF to rename to 21Shares Bitcoin ETF with ticker TBIT
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- 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.

Source:
  EDGAR index:    https://www.sec.gov/Archives/edgar/data/1869699/000121390026111688/0001213900-26-111688-index.htm
  Primary doc:    https://www.sec.gov/Archives/edgar/data/1869699/000121390026111688/ea0309236-8k_ark21shares.htm
  HTML page:      https://secwatch.observer/filing/0001213900-26-111688

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