Arbuthnot Banking Group PLC ARBB

LONDON, October 01, 2026-- FORM 8.3

FORM 8.3 PUBLIC OPENING POSITION DISCLOSURE/DEALING DISCLOSURE BY A PERSON WITH INTERESTS IN RELEVANT SECURITIES REPRESENTING 1% OR MORE Rule 8.3 of the Takeover Code (the “Code”) 1. KEY INFORMATION (a) Full name of discloser:OCTOPUS INVESTMENTS LTD(b) Owner or controller of interests and short positions disclosed, if different from 1(a): The naming of nominee or vehicle companies is insufficient. For a trust, the trustee(s), settlor and beneficiaries must be named. (c) Name of offeror/offeree i

FORM 8.5 (EPT/RI) PUBLIC DEALING DISCLOSURE BY AN EXEMPT PRINCIPAL TRADER WITH RECOGNISED INTERMEDIARY STATUS DEALING IN A CLIENT-SERVING CAPACITY Rule 8.5 of the Takeover Code (the “Code”) 1. KEY INFORMATION (a) Name of exempt principal trader:Investec Bank Plc(b) Name of offeror/offeree in relation to whose relevant securities this form relates: Use a separate form for each offeror/offereeAdvanced Medical Solutions Group Plc(c) Name of the party to the offer with which exempt principal trader