DIATREME RESOURCES LIMITED — M&A Activity 2024

Jun 16, 2024

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17 June 2024

Market Announcements Office ASX Limited 20 Bridge Street Sydney NSW 2000

Dear Sir/Madam

Takeover bid by Diatreme Resources Limited for Metallica Minerals Limited Notice of status of conditions

Diatreme Resources Limited ( Diatreme ) refers to its off-market takeover bid under Chapter 6 of the Corporations Act 2001 (Cth) ( Corporations Act ) for all the fully paid ordinary shares in Metallica Minerals Limited ACN 076 696 092 (ASX: MLM) ( Metallica ) (the Offer ).

We attach , by way of service pursuant to section 630(5)(b) of the Corporations Act, Diatreme’s notice of status of conditions under section 630(3) of the Corporations Act. As announced on 17 June 2024, Diatreme declared its Offer free of all remaining defeating conditions; therefore, the Offers and each contract resulting from acceptance of the Offers are unconditional.

This market announcement was authorised for release by:

Neil McIntyre Chief Executive Officer

Greg Starr Non-executive director

Contact – Mr Neil McIntyre - Ph – +61 (0)7 3397 2222 Website - www.diatreme.com.au Email - manager@diatreme.com.au

For investor/media queries, please contact: Anthony Fensom, Fensom Advisory anthony@fensom.com.au Ph: +61 (0)407 112 62

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DIATREME RESOURCES LIMITED ACN 061 267 061

To: Metallica Minerals Limited ACN 076 696 092 ( Metallica

ASX Limited

NOTICE OF STATUS OF CONDITIONS

SECTION 630(3) CORPORATIONS ACT 2001 (Cth)

This notice is given by Diatreme Resources Limited ACN 061 267 061 ( Diatreme ) in respect of the offers dated 11 April 2024 made by Diatreme under its off-market takeover bid to acquire all of the ordinary shares in Metallica ( Offers ). The Offers are contained in Diatreme’s bidder’s statement dated 28 March 2024 (as varied by notices dated 17 May 2024, 24 May 2024, 3 June 2024 and 6 June 2024, and as supplemented by the first supplementary bidder’s statement dated 10 April 2024, second supplementary bidder’s statement dated 17 April 2024, third supplementary bidder’s statement dated 8 May 2024 and fourth supplementary bidder’s statement dated 5 June 2024) ( Bidder’s Statement ). Unless the context requires otherwise, terms defined in the Bidder’s Statement have the same meaning in this notice.

Diatreme hereby gives notice under section 630(3) of the Corporations Act 2001 (Cth) that:

• (a) as announced by Diatreme on:

• (i) 21 May 2024, the Condition at paragraph 1 (Minimum acceptance) in Schedule 2 of the Bidder’s Statement was fulfilled on 21 May 2024; and

• (ii) 17 June 2024, the Offers and each contract resulting from acceptance of the Offers were freed from all other Conditions contained in Schedule 2 of the Bidder’s Statement;

• (b) the Offers and each contract resulting from acceptance of the Offers are unconditional; and

• (c) as at the date of this notice, Diatreme’s voting power in Metallica is 57.34%, comprising 550,391,309 Metallica Shares out of a total 959,923,922 Metallica Shares presently on issue.

The Offer will close at 7.00pm (Sydney time) on Tuesday, 25 June 2024 unless extended in accordance with the Corporations Act.

Dated 17 June 2024

Signed for and on behalf of Diatreme Resources Limited

by:

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Tuan Do Company Secretary