1 June 2026

Arbuthnot Banking Group PLC

(the "Company")

Admission of Ordinary Non-Voting Shares to Trading on AIM

Arbuthnot Banking Group PLC (AIM: ARBB) announces that an application has been made for its ordinary non-voting shares of £0.01 each (the "Ordinary Non-Voting Shares") to be admitted to trading on AIM ("Admission") and it is expected that Admission in respect of the Ordinary Non-Voting Shares will become effective at 8:00 a.m. on or around 2 June 2026 .

The Ordinary Non-Voting Shares are currently admitted to trading on the Aquis Stock Exchange Growth Market ("AQSE") under the TIDM ARBN and have the following identifiers: ISIN GB00BJRHYM66 and SEDOL BJRHYM6 (the "Identifiers").

Background to and reasons for the creation of the Ordinary Non-Voting Shares

The Ordinary Non-Voting Shares were created in 2019 as a separate class of ordinary share capital to the Company's voting ordinary shares of £0.01 each ("Ordinary Shares"), to give the Company the flexibility to raise funds through the issue of shares while preserving the voting position of the majority holders of the Company's Ordinary Shares. In May 2019, the Company announced a bonus issue of 152,621 Ordinary Non-Voting Shares to holders of Ordinary Shares on a basis of one Ordinary Non-Voting Share for every one hundred Ordinary Shares held, alongside the Ordinary Non-Voting Shares and existing Ordinary Shares being admitted to trading on AQSE.

Following changes to the AIM Rules for Companies in January 2026 and, in particular, the removal of the requirement for the publication of an admission document when admitting a new class of shares to trading on AIM, the Board now believes that admission to trading on AIM of the Ordinary Non-Voting Shares is in the best interests of the Company and shareholders as a whole, as it is expected to improve the visibility of the Ordinary Non-Voting Shares, enhance liquidity and broaden the potential investor base for the Ordinary Non-Voting Shares.

Rights attaching to the Ordinary Non-Voting Shares

The Ordinary Non-Voting Shares rank pari passu with the Ordinary Shares as to dividends and other distributions and as to returns of capital on a winding-up. However, they do not carry voting rights at general meetings of the Company, save in the limited circumstances required by applicable law and/or where the rights attaching to the Ordinary Non-Voting Shares as a class are varied.

Ordinary Non-Voting Share identifiers following Admission

From Admission, the Ordinary Non-Voting Shares will continue to trade with its current Identifiers, as set out below:

• TIDM: ARBN

• ISIN: GB00BJRHYM66

• SEDOL: BJRHYM6

The identifiers of the Ordinary Shares, which are admitted to trading on AIM and AQSE, remain unchanged.

Admission and total voting rights

The Company has 152,621 Ordinary Non-Voting Shares in issue of which 19,040 are held in Treasury. Application has been made for the 152,621 Ordinary Non-Voting Shares to be admitted to trading on AIM. Admission is expected to become effective and dealings to commence at 8.00 a.m. on or around 2 June 2026.

Following Admission, the Company's issued share capital will remain unchanged, comprising 16,576,619 Ordinary Shares and 152,621 Ordinary Non-Voting Shares. The Ordinary Shares (voting) are admitted to trading on AIM under TIDM: ARBB. The Ordinary Non-Voting Shares do not carry voting rights and therefore do not form part of the Company's total voting rights for the purposes of the FCA's Disclosure Guidance and Transparency Rules.

Following Admission, the Ordinary Non-Voting Shares and Ordinary Shares will remain admitted to trading on AQSE. The Board will keep this under review and may in due course seek to cancel the AQSE admission of the Ordinary Shares and Ordinary Non-Voting Shares. No decision has been taken in this regard and any further updates will be announced as and when appropriate.

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