5 May 2026

AUCTION TECHNOLOGY GROUP PLC

Appointment of Chief Executive Officer

Auction Technology Group plc ("ATG", "the Company", "the Group") (LON: ATG), the operator of world-leading auction and list price marketplaces that connect millions of buyers with unique items worth finding again, today announces the appointment of Duncan Painter as Chief Executive Officer with immediate effect.

Duncan brings significant experience in digital marketplaces, ecommerce and public company leadership. He was most recently Chief Executive of Omnicom Commerce, including Flywheel Digital, which he scaled into a global ecommerce services platform. Prior to this, he served as Chief Executive of Ascential plc from 2011 until the sale of its Digital Commerce division to Omnicom Group Inc. in January 2024.

John-Paul Savant will provide transitional support through the handover period ending on 20 May 2026 .

The Group will release its interim results on 14 May 2026 as previously announced.

Scott Forbes, Chair, commented:

"We are delighted to announce the appointment of Duncan Painter as Chief Executive Officer. He has a strong track record of delivering shareholder value through disciplined commercial execution and operational focus, alongside deep experience in marketplaces and ecommerce. ATG has a clear strategy, and we are confident that under Duncan's leadership we will accelerate its execution."

Duncan Painter, Chief Executive Officer, commented:

"I have long admired ATG and the strength of its marketplace platforms. I am delighted to join the Group at this important stage in its development.

The strategy is clear, and I see significant opportunity to accelerate its execution to drive sustainable growth and increasing shareholder value. I look forward to working closely with the Board, our colleagues and customers to realise the Group's full potential."

For the purposes of UKLR 6.4.8R, Duncan was previously Chief Executive Officer of Ascential plc from 12 February 2016 to 2 January 2024 and a Non-Executive Director of ITV plc from 1 May 2018 to 30 November 2023. There are no further matters requiring disclosure under UKLR 6.4.8R.

For further information, please contact:

About Auction Technology Group plc

Auction Technology Group plc ("ATG") is the operator of world-leading auction and list price marketplaces that connect millions of buyers with unique items worth finding again. ATG operates across two major sectors: Arts & Antiques ("A&A") and Industrial & Commercial ("I&C").

The Group powers ten branded online auction and list price marketplaces using best in class proprietary technology, and collectively facilitates the sale of more than 26m unique secondary items per year with a value of over $12bn annually. ATG has offices in North America, the United Kingdom, Germany and Mexico.