NEXTDC LIMITED — Director's Dealing 2026

May 20, 2026

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	NEXTDC Limited
ABN	35 143 582 521

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	Douglas Ronald Flynn
Date of last notice	11 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	Indirect
Nature of indirect interest (including registered holder)
Note: Provide details of the circumstances giving rise to the relevant interest.	• Dai Yat Pty Ltd ATF Alecam Trust, a family discretionary trust of which Mr Flynn is a director and beneficiary (Dai Yat Pty Ltd)
• DR & LR Flynn Nominees Pty Ltd ATF Flynn Superannuation Fund of which Mr Flynn is a director and beneficiary (DR & LC Flynn Nominees Pty Ltd)
Date of change	18 May 2026
No. of securities held prior to change	• 85,779 fully paid ordinary shares held by Dai Yat Pty Ltd
• 128,042 fully paid ordinary shares held by DR & LC Flynn Nominees Pty Ltd
Class	Ordinary Shares (acquired pursuant to the Entitlement Offer announced by NEXTDC Limited on 20 April 2026).
Number acquired	23,712 shares acquired by DR & LC Flynn Nominees Pty Ltd
Number disposed	N/A

• See chapter 19 for defined terms.

01/01/2011 Appendix 3Y Page 1

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Appendix 3Y

Change of Director’s Interest Notice

| Value/Consideration
Note: If consideration is non-cash, provide details and estimated valuation | $12.70 per share |
| --- | --- |
| No. of securities held after change | • 85,779 fully paid ordinary shares held by Dai Yat Pty Ltd
• 151,754 fully paid ordinary shares held by DR & LC Flynn Nominees 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 | Ordinary Shares acquired pursuant to the Entitlement Offer announced by NEXTDC Limited on 20 April 2026. |

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 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 2

01/01/2011