Bank Ozk – BZ56Q65 – US06417N1037
To qualify for ISA inclusion, a share has to be officially listed on a recognised stock exchange (see ISA Guidance https://www.gov.uk/guidance/stocks-and-shares-investments-for-isa-managers#shareinv) or, from 5 August 2013, admitted to trading on a recognised stock exchange in the European Economic Area (EEA) or the UK.
From the initial research we have carried out, this share appears to have a listing on the NASDAQ and is also admitted to trading on the Frankfurt Stock Exchange (see links below) therefore, on that basis, the shares should qualify for stocks & shares ISA inclusion.
BANK OZK DL-,01 Equity | A2JQ1Z | US06417N1037 | Share Price (boerse-frankfurt.de)
Bank OZK Common Stock (OZK) Stock Price, Quote, News & History | Nasdaq