Announcement PDF Market Announcement 22 April 2025 Atomo Diagnostics Limited (ASX: AT1) – Trading Halt Description The securities of Atomo Diagnostics Limited (‘AT1’) will be placed in trading halt at the request of AT1, pending it releasing an announcement. Unless ASX decides otherwise, the securities will remain in trading halt until the earlier of the commencement of normal trading on Thursday, 24 April 2025 or when the announcement is released to the market. Issued by ASX Compliance 22 April 2025 ASX Limited #10894990v1 Market Announcement 1/1 ASX Customer Service Centre 131 279 | asx.com.au 22 April 2025 Ms. Yulia Gurdina ASX Compliance Pty Limited Level 6, 20 Bridge Street, Sydney NSW 2000 Delivered via email: TradingHaltsSydney@asx.com.au Dear Yulia, REQUEST FOR TRADING HALT Atomo Diagnostics Limited (ASX: AT1) (the Company) requests an immediate halt to the trading of the Company’s securities (ASX: AT1) quoted on the Australian Securities Exchange (ASX) in accordance with ASX Listing Rule 17.1. The trading halt is requested to enable the Company to prepare and release a market announcement regarding a capital raising (stated purpose). In accordance with ASX Listing Rule 17.1, the Company provides the following information in relation to the request: 1. The trading halt is necessary to assist the Company in managing its continuous disclosure obligations as the Company expects to make an announcement to the market in relation to the stated purpose above. 2. The Company requests that the trading halt remains in place until the earlier of commencement of normal trading on Thursday, 24 April 2025, or when the announcement regarding the stated purpose is released to the market. 3. The Company expects to make the announcement to the market before the commencement of normal trading on Thursday, 24 April 2025. 4. The Company is not aware of any reason why the trading halt should not be granted or of any further information necessary to inform the market about the trading halt. Please contact me if you require any further information concerning this matter. Yours sincerely, Mathew Watkins Company Secretary Atomo Diagnostics Limited ACN 142 925 684 Level 1, 3-5 George St Leichhardt NSW 2040