ORIGIN ENERGY LIMITED — Director's Dealing 2025

Aug 27, 2025

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To Company Announcements Office Company ASX Limited From Helen Hardy Subject Appendices 3Y	Facsimile1300 135 638
	Date 28 August 2025
	Pages 8

Please find attached Appendices 3Y Change of Director’s Interest Notice for Mr Frank Calabria and Dr Nora Scheinkestel.

Regards

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Authorised by: Helen Hardy Company Secretary

02 8345 5000

Origin Energy Limited ABN 30 000 051 696 • Level 32, Tower 1, 100 Barangaroo Avenue, Barangaroo, NSW 2000 GPO Box 5376, Sydney NSW 2001 • Telephone (02) 8345 5000 • Facsimile (02) 9252 9244• www.originenergy.com.au

Appendix 3Y Change of Director’s Interest Notice

Rule 3.19A.2

Appendix 3Y

Change of Director’s Interest Notice

Information or documents not available now must be given to ASX as soon as available. Information and documents given to ASX become ASX’s property and may be made public.

Introduced 30/09/01 Amended 01/01/11

Name	of	entity	ORIGIN ENERGY LIMITED	ORIGIN ENERGY LIMITED
ABN			30 000 051 696

We (the entity) give ASX the following information under listing rule 3.19A.2 and as agent for the director for the purposes of section 205G of the Corporations Act.

Name of Director	Frank Calabria
Date of last notice	17 October 2024

Part 1 - Change of director’s relevant interests in securities

In the case of a trust, this includes interests in the trust made available by the responsible entity of the trust

Note: In the case of a company, interests which come within paragraph (i) of the definition of “notifiable interest of a director” should be disclosed in this part.

Direct or indirect interest	Direct and indirect interests
Nature of indirect interest (including registered holder) Note: Provide details of the circumstances giving rise to the relevant interest.	Restricted Shares held on behalf on Mr Calabria in the name of Origin Employee Share Trust.
Date of change	22 August 2025
No. of securities held prior to change	380,404 Fully Paid Ordinary Shares held directly 1,390,497 Fully Paid Ordinary Shares held indirectly 462,496 Performance Share Rights held directly 607,679 Restricted Share Rights held directly
Class	1) Movement between indirect and direct (Fully Paid Ordinary Shares) 2) Fully Paid Ordinary Shares held directly 3) Fully Paid Ordinary Shares held indirectly 4) Performance Share Rights 5) Restricted Share Rights

• See chapter 19 for defined terms.

01/01/2011

Appendix 3Y Page 1

Appendix 3Y Change of Director’s Interest Notice

Number acquired	1) 408,750 Restricted Shares held indirectly released into Fully Paid Ordinary Shares held directly 2) 76,284 Fully Paid Ordinary Shares held directly allocated on vesting of 61,138 Restricted Share Rights plus 15,146 Dividend Equivalent Shares pursuant to the terms of Origin’s Equity Incentive Plan 3) 395,727 Restricted Shares held indirectly allocated on vesting of 198,980 Performance Share Rights and 144,989 Restricted Share Rights, plus 51,758 Dividend Equivalent Restricted Shares, in accordance with the Equity Incentive Plan Rules 4) N/A 5) N/A
Number disposed	1) N/A 2) N/A 3) 408,750 Restricted Shares held indirectly released into Fully Paid Ordinary Shares held directly at Nil consideration 4) 198,980 Performance Share Rights vested pursuant to the terms of Origin’s Equity Incentive Plan 5) 206,127 (61,138+144,989) Restricted Share Rights vested pursuant to the terms of Origin’s Equity Incentive Plan
Value/Consideration Note: If consideration is non-cash, provide details and estimated valuation	1) N/A 2) Nil, pursuant to the terms of Origin’s Equity Incentive Plan. 3) Nil, pursuant to the terms of Origin’s Equity Incentive Plan. 4) Nil, pursuant to the terms of Origin’s Equity Incentive Plan. 5) Nil, pursuant to the terms of Origin’s EquityIncentivePlan.
No. of securities held after change	865,438 Fully Paid Ordinary Shares held directly 1,377,474 Fully Paid Ordinary Shares held indirectly 263,516 Performance Share Rights held directly 401,552 Restricted Share Rights held directly

• See chapter 19 for defined terms.

Appendix 3Y Page 2

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Appendix 3Y Change of Director’s Interest Notice

	Nature of change Example: on-market trade, off-market trade, exercise of options, issue of securities under dividend reinvestment plan, participation in buy-back	1) 408,750 Restricted Shares held indirectly released into Fully Paid Ordinary Shares held directly pursuant to the terms of Origin’s Equity Incentive Plan 2) 76,284 Fully Paid Ordinary Shares held directly allocated on vesting of 61,138 Restricted Share Rights plus 15,146 Dividend Equivalent Shares pursuant to the terms of Origin’s Equity Incentive Plan 3) 395,727 Restricted Shares held indirectly allocated on vesting of 198,980 Performance Share Rights and 144,989 Restricted Share Rights, plus 51,758 Dividend Equivalent Restricted Shares, in accordance with the Equity Incentive Plan Rules 4) Vesting of 198,980 Performance Share Rights in accordance with the Equity Incentive Plan Rules 5) Vesting of 206,127 Restricted Share Rights in accordance with the Equity Incentive Plan Rules

Part 2 – Change of director’s interests in contracts

Note: In the case of a company, interests which come within paragraph (ii) of the definition of “notifiable interest of a director” should be disclosed in this part.

Detail of contract	N/A
Nature of interest	N/A
Name of registered holder (if issued securities)	N/A
Date of change	N/A
No. and class of securities to which interest related prior to change Note: Details are only required for a contract in relation to which the interest has changed	N/A
Interest acquired	N/A
Interest disposed	N/A
Value/Consideration Note: If consideration is non-cash, provide details and an estimated valuation	N/A

• See chapter 19 for defined terms.

01/01/2011

Appendix 3Y Page 3

Appendix 3Y Change of Director’s Interest Notice

Interest after change N/A

Part 3 –[+] Closed period

art 3 –+Closed period
Were the interests in the securities or contracts detailed above traded during a+closed period where prior written clearance was required?	No
If so, was prior written clearance provided to allow the trade to proceed during this period?	N/A
If prior written clearance was provided, on what date was this provided?	N/A

• See chapter 19 for defined terms.

Appendix 3Y Page 4

01/01/2011

Appendix 3Y Change of Director’s Interest Notice

Rule 3.19A.2

Appendix 3Y

Change of Director’s Interest Notice

Information or documents not available now must be given to ASX as soon as available. Information and documents given to ASX become ASX’s property and may be made public.

Introduced 30/09/01 Amended 01/01/11

Name of entity	Origin Energy Limited
ABN	30 000 051 696

We (the entity) give ASX the following information under listing rule 3.19A.2 and as agent for the director for the purposes of section 205G of the Corporations Act.

Name of Director	Nora Scheinkestel
Date of last notice	3 June 2022

Part 1 - Change of director’s relevant interests in securities

In the case of a trust, this includes interests in the trust made available by the responsible entity of the trust

Note: In the case of a company, interests which come within paragraph (i) of the definition of “notifiable interest of a director” should be disclosed in this part.

Direct or indirect interest	Indirect
Nature of indirect interest (including registered holder) Note: Provide details of the circumstances giving rise to the relevant interest.	On-market purchase of ordinary shares in the name of Scheinkestel Superannuation Pty Ltd
Date of change	26 August 2025
No. of securities held prior to change	30,805 held indirectly in the name of Scheinkestel Superannuation Pty Ltd 2,560 held indirectly in the name of Scheinkestel Superannuation Pty Ltd
Class	Fully paid ordinary shares
Number acquired	1,908
Number disposed	Nil

• See chapter 19 for defined terms.

01/01/2011

Appendix 3Y Page 1

Appendix 3Y Change of Director’s Interest Notice

Value/Consideration Note: If consideration is non-cash, provide details and estimated valuation	$12.9600 per share
No. of securities held after change	30,805 held indirectly in the name of Scheinkestel Superannuation Pty Ltd 4,468 held indirectly in the name of Scheinkestel Superannuation Pty Ltd
Nature of change Example: on-market trade, off-market trade, exercise of options, issue of securities under dividend reinvestment plan, participation in buy- back	On market purchase

Part 2 – Change of director’s interests in contracts

Note: In the case of a company, interests which come within paragraph (ii) of the definition of “notifiable interest of a director” should be disclosed in this part.

Detail of contract	N/A
Nature of interest	N/A
Name of registered holder (if issued securities)	N/A
Date of change	N/A
No. and class of securities to which interest related prior to change Note: Details are only required for a contract in relation to which the interest has changed	N/A
Interest acquired	N/A
Interest disposed	N/A
Value/Consideration Note: If consideration is non-cash, provide details and an estimated valuation	N/A
Interest after change	N/A

Part 3 –[+] Closed period

Were the interests in the securities or contracts detailed N/A above traded during a[+] closed period where prior written clearance was required? If so, was prior written clearance provided to allow the N/A trade to proceed during this period?

• See chapter 19 for defined terms.

Appendix 3Y Page 2

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Appendix 3Y Change of Director’s Interest Notice

If prior written clearance was provided, on what date was N/A this provided?

• See chapter 19 for defined terms.

01/01/2011

Appendix 3Y Page 3