Form 605 Corporations Act 2001 Section 671B Notice of ceasing to be a substantial holder To: Company Name/Scheme: Orbital Corporation Ltd ACN/ARSN: 009 344 058 1. Details of substantial holder Name: Superannuation and Investments HoldCo Pty Ltd ACN 644 660 882 and its related bodies corporate listed in annexure A The holder ceased to be a substantial holder on: 13/12/2024 The previous notice was given to the company on: 22/11/2024 The previous notice was dated: 21/11/2024 2. Changes in relevant interests Particulars of each change in, or change in the nature of, a relevant interest of the substantial holder or an associate in voting securities of the company or scheme, since the substantial holder was last required to give a substantial holding notice to the company or scheme are as follows: Date of change Person whose relevant interest changed Nature of change Consideration given in relation to change Class and number of securities affected Person's votes affected Decrease in voting power arising from issuance of shares on 13 December 2024 and transactions as set out in Annexure B 1 3. Changes in association The persons who have become associates of, ceased to be associates of, or have changed the nature of their association with, the substantial holder in relation to voting interests in the company or scheme are as follows: Name and ACN/ARSN (if applicable) Nature of association 2 4. Addresses The addresses of persons named in this form are as follows: Address Name Colonial First State Investments Limited (Note 1) ACN 002 348 352 Level 15, 400 George Street, Sydney, NSW, 2000, Australia 3 5. Signature Dated the 17 day of December 2024 - 4 Annexure A This is Annexure A referred to in Form 605, Notice of ceasing to be a substantial holder Superannuation and Investments HoldCo Pty Ltd ACN 644 660 882 Dated the 17/12/2024 SCHEDULE Avanteos Investments Limited Colonial First State Investments Limited Superannuation And Investments US LLC Superannuation and Investments FinCo Pty Ltd Superannuation and Investments HoldCo Pty Ltd Superannuation and Investments Management Pty Ltd Superannuation and Investments MidCo Pty Ltd Superannuation and Investments Services Pty Ltd 5 Annexure B This is Annexure B referred to in Form 605, Notice of ceasing to be substantial holder Superannuation and Investments HoldCo Pty Ltd ACN 644 660 882 Dated the 17/12/2024 Date of change Person whose relevant interest 13/12/2024 Colonial First State Investments Limited (Note 1) ACN 002 348 352 Sale 13,555.29 129098 Fully Paid Ordinary Shares 129,098 13/12/2024 Colonial First State Investments Limited (Note 1) ACN 002 348 352 Sale 8,924.37 84994 Fully Paid Ordinary Shares 84,994 11/12/2024 Colonial First State Investments Limited (Note 1) ACN 002 348 352 Sale 6,402.88 58208 Fully Paid Ordinary Shares 58,208 29/11/2024 Colonial First State Investments Limited (Note 1) ACN 002 348 352 Sale 19,804.50 172213 Fully Paid Ordinary Shares 172,213 29/11/2024 Colonial First State Investments Limited (Note 1) ACN 002 348 352 Sale 12,768.80 111033 Fully Paid Ordinary Shares 111,033 21/11/2024 Colonial First State Investments Limited (Note 1) ACN 002 348 352 Sale 3,809.70 38097 Fully Paid Ordinary Shares 38,097 Nature of change Consideration given in relation to change Class and number of securities affected Person's votes affected 6