SILEX SYSTEMS LIMITED — Director's Dealing 2025

Dec 17, 2025

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 Silex Systems Limited ABN 69 003 372 067

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	Michael Goldsworthy
Date of last notice	20 October 2025

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
Nature of indirect interest(including registered holder)Note: Provide details of the circumstances giving rise to the relevantinterest.		Fully paid ordinary shares in Silex Systems Limitedheld in the name of Majenta Holdings Pty Ltd
Date of change		15 December 2025, 16 December 2025 and 17December 2025
No. of securities held prior to change		Direct726,195 fully paid ordinary shares450,000 Options621,100 Performance RightsIndirect5,703,923 fully paid ordinary shares held byMajenta Holdings Pty Ltd
Class		Fully paid ordinary shares

• See chapter 19 for defined terms.

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Appendix 3Y Change of Director’s Interest Notice

Number acquired		• 150,000 fully paid ordinary shares from theexercise of options at $0.94 exercise price,under the Silex Systems Limited EmployeeIncentive Plan, having satisfied the vestingcriteria• 412,500 fully paid ordinary shares from thevesting of Performance Rights under the SilexSystems Limited Employee Incentive Plan(ExtendedLong-termIncentivefortheperformance period ending 31 December 2025)
Number disposed		Sold 562,500 fully paid ordinary shares to fund theexercise of options and tax liabilities incurred inrelation to shares acquired under the Silex SystemsLimited Employee Incentive Plan
Value/ConsiderationNote: If consideration is non-cash, provide details and estimatedvaluation		• 150,000 fully paid ordinary shares acquired onpayment of $141,000 to exercise options• 412,500 fully paid ordinary shares acquired for$nil following vesting of Performance Rights• Average of $7.4816 per share on the sale of562,500 fully paid ordinary shares
No. of securities held after change		Direct1,288,695 fully paid ordinary shares300,000 Options208,600 Performance RightsIndirect5,141,423 fully paid ordinary shares held byMajenta Holdings Pty Ltd
Nature of changeExample: on-market trade, off-market trade, exercise of options, issueof securities under dividend reinvestment plan, participation in buy-back		• 150,000 shares acquired on 15 December 2025from the exercise of options (related to MichaelGoldsworthy’s FY2023 long-term incentive)• 412,500 shares acquired on 15 December 2025from the vesting of Performance Rights (relatedto Michael Goldsworthy’s Extended Long-termIncentive for the 5.5-year performance periodending 31 December 2025). The Extended LTIwas eligible for early vesting in the event theperformance criteria was achieved (specificallytailored outcomes relating to the successfulTRL-6 demonstration of the SILEX uraniumenrichment technology)• On-market sale of shares (562,500 shares intotal) on 15, 16 and 17 December 2025 to fundthe exercise of options and tax liabilities incurredin relation to shares acquired under the SilexSystems Limited Employee Incentive Plan

• See chapter 19 for defined terms.

Appendix 3Y Page 2

01/01/2011

Appendix 3Y Change of Director’s Interest Notice

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

Part 3 –[+] Closed period

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

• See chapter 19 for defined terms.

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