Announcement PDF ASX Announcement 13 December 2023 Change of Share Registry In accordance with ASX Listing Rule 3.15.1, Atomo Diagnostics Limited (ASX: AT1) (Atomo or the Company) advises that as of Monday 18 December 2023, the Company will change its provider for share registry management services from Link Market Services Limited (Link) to Boardroom Pty Limited (Boardroom). Boardroom’s contact details are as follows: Boardroom Pty Limited Level 8, 210 George Street Sydney NSW 2000 PO Box 3993 Sydney NSW 2001 Telephone: 1300 737 760 Fax: (02) 9279 0664 Email: enquiries@boardroomlimited.com.au Web: www.boardroomlimited.com.au Link will cease to be the registry provider at close of business on Friday 15 December 2023. Shareholders can manage their holdings in Atomo via Boardroom’s secure portal http://www.investorserve.com.au/ which provides an interface to update and manage shareholder details and view balances and transactions. Shareholders that are not already a user of Boardroom’s investor portal may sign up to register their details. For more information, please contact: John Kelly Atomo Diagnostics john.kelly@atomodiagnostics.com Phone: +61 401 922 279 This announcement was authorised by the Managing Director & CEO. Atomo Diagnostics Limited ACN 142 925 684 Level 1, 3-5 George St Leichhardt NSW 2040