Market Announcement 19 August 2025 Orbital Corporation Limited (ASX: OEC) – Trading Halt Trading in the securities of Orbital Corporation Limited (‘OEC’) will be halted at the request of OEC, pending the release of an announcement by OEC. Unless ASX decides otherwise, the securities will remain in trading halt until the earlier of: • the commencement of normal trading on Thursday, 21 August 2025; or • the release of the announcement to the market. OEC’s request for a trading halt is attached below for the information of the market. Issued by ASX Compliance 19 August 2025 ASX Limited Market Announcement 1/1 ASX Customer Service Centre 131 279 | asx.com.au 19 August 2025 Ms Caitlyn Cooke ASX Compliance Level 40, 152 – 158 St Georges Terrace Perth, WA 6000 By email: Caitlyn.Cooke@asx.com.au; tradinghaltsperth@asx.com.au Dear Ms Cooke, Orbital Corporation Limited – Request for Trading Halt In accordance with ASX Listing Rule 17.1, Orbital Corporation Limited (‘the Company’) requests that an immediate trading halt be placed on its securities (OEC and OECO). In accordance with ASX Listing Rule 17.1, the Company advises: • that it is seeking a trading halt pending an Announcement by the Company of a capital raising ('Announcement'); • it anticipates that the trading halt will end at the commencement of normal trading on Thursday, 21 August 2025 after the Announcement has been released to the ASX; and • the Company is not aware of any reason why the trading halt should not be granted or of any other information necessary to inform the market about the trading halt. Please telephone Mark Wege on (08) 9441 2135 with any queries. This request has been authorised for release to the ASX by the Company's Board of directors. Yours faithfully, Mark Wege Company Secretary and CFO