Publication of Circular

Auction Technology Group PLC

13 November 2026

LEI: 213800U8Q9K2XI3WRE39

Auction Technology Group plc

(the “Company” or “ATG”)

Publication of Circular and Notice of Requisitioned Meeting

As announced on 26 October 2026, the Board of ATG (the “Board”) received a requisition notice on behalf of FitzWalter Capital Limited (“FitzWalter”) to call a general meeting of the Company (the “General Meeting”).

Accordingly, the Company has today published a shareholder circular in response to the requisition (the “Circular”), which contains a notice convening the General Meeting (the “Notice of General Meeting”).

The General Meeting is to be held at the offices of Latham & Watkins (London) LLP at One Leadenhall, 1 Leadenhall Street, London EC3V 1AA, United Kingdom at 2.00 p.m. on 7 December 2026. Shareholders are invited to attend and participate in the meeting in person or may refer to the Notice of General Meeting for details on how to vote on the resolutions by proxy. Shareholders will also be able to watch and listen to (but not vote at) the General Meeting via a live webcast and should register by emailing [email protected]. Questions regarding the business of the General Meeting can be submitted in advance of the meeting to [email protected] up to 2.00 p.m. on 3 December 2026.

The Independent Board (being all of the directors of the Company other than Scott Forbes who, as the subject of Resolution 1, has not participated in the Board’s recommendation) unanimously recommends that shareholders vote AGAINST both the proposed resolutions.

FitzWalter has proposed that shareholders consider the following ordinary resolutions:

The Circular, together with the Notice of General Meeting and the accompanying Proxy Form are being made available to view on the Company’s website at www.auctiontechnologygroup.com/investors. Shareholders who elected to receive shareholder information electronically are being notified that these documents are available on the Company’s website. Hard copies of the documents are being posted today to shareholders who elected to receive shareholder information in hard copy.

The Circular, Notice of General Meeting and Proxy Form have been submitted to the National Storage Mechanism and will shortly be available for viewing at https://data.fca.org.uk/#/nsm/nationalstoragemechanism.

ATG

Chris Dyett     +44 (0)79 74 97 4690 / +44 (0)20 3725 5500

IR Director     [email protected] 

FTI Consulting (Media Enquiries)

Jamie Ricketts     [email protected]

Edward Knight     +44 (0)20 3727 1000

About Auction Technology Group plc

Auction Technology Group plc (“ATG”) operates 10 leading marketplaces in Arts & Antiques (“A&A”) and Industrial & Commercial (“I&C”), connecting millions of buyers with unique items worth finding again. ATG transforms fragmented, complex markets into structured, trusted marketplaces where buyers and sellers can transact with confidence at scale.

The Group powers its ten branded online auction and list price marketplaces using best in class proprietary technology. ATG has offices in North America, the United Kingdom, Germany and Mexico.