SOLIS MINERALS LIMITED — Proxy Solicitation & Information Statement 2025

Nov 4, 2025

News Release

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5 November 2025

Dear Chess Depositary Interest holder

General Meeting – Notice of Special Meeting and CDI Voting Instruction Form

Notice is given that the Special Meeting ( Meeting ) of Shareholders, including Chess Depositary Interest ( CDI ) holders, of Solis Minerals Ltd. (ARBN 653 083 026) ( Company ) will be held as follows:

Time and date: 9:30am (AWST) on Thursday, 4 December 2025

Location: 3/32 Harrogate St., West Leederville WA 6007

Notice of Meeting

The Company will not be dispatching physical copies of the Notice of Meeting unless the CDI holder has made a valid election to receive documents in hard copy. Instead, the Notice of Meeting and Information Circular (together, Meeting Materials ) are being made available to CDI holders electronically and can be viewed and downloaded from:

• the Company’s website at https://solisminerals.com/investors/asx-announcements/ ; or

• the ASX market announcements page under the Company’s code “SLM”.

For those CDI holders that have not elected to receive notices by email, a copy of your personalised CDI Voting Instruction Form is enclosed for your convenience. Please complete and return the attached CDI Voting Instruction Form to the Company’s share registry, Computershare Investor Services Pty Limited, using any of the following methods:

Online	Lodge the CDI Voting Instruction Form online at www.investorvote.com.au. To use the online lodgement facility, CDI Holders will need their holder number (Securityholder Reference Number (SRN) or Holder Identification Number (HIN)) as shown on the front of the CDI Voting Instruction Form.
By post	Computershare Investor Services Pty Limited, GPO Box 242, Melbourne VIC 3001, Australia
By fax	1800 783 447 within Australia or +61 3 9473 2555 outside Australia

Your CDI Voting Instruction Form must be received by 9:30am (AWST) on Monday, 1 December 2025 . Any CDI Voting Instruction Form received after that time will not be valid for the scheduled Meeting. The Company strongly encourages all CDI holders to submit their personalised CDI Voting Instruction Form as instructed prior to the Meeting.

The Meeting Materials should be read in their entirety. If CDI holders are in doubt as to how they should vote, they should seek advice from their professional advisers prior to voting.

Solis Minerals E: info@solisminerals.com.au T: 08 6117 4798 (Australia office) solisminerals.com

Media Contact: Fiona Marshall E: fiona@whitenoisecomms.com T: +61 400 512 109

ASX: SLM OTC: WMRSF FRA: 08W

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If you have difficulties obtaining a copy of the Meeting Materials, please contact the Company’s share registry, Computershare Investor Services Pty Limited on 1300 850 505 (within Australia) or +61 3 9415 4000 (outside Australia).

Authorised by the Board of Solis Minerals Limited

Sarah Smith Company Secretary

About Solis Minerals Limited

Solis Minerals is an emerging exploration company, focused on unlocking the potential of its South American copper portfolio. The Company is building a significant copper portfolio around its core tenements of Ilo Este and Ilo Norte and elsewhere in the Southern Coastal Belt of Peru.

The Company is led by a highly-credentialled and proven team with excellent experience across the mining lifecycle in South America. Solis Minerals is actively considering a range of copper opportunities. South America is a key player in the global export market for copper and Solis Minerals, under its leadership team, is strategically positioned to capitalise on growth the opportunities within this mineral-rich region.

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Need assistance?

Phone:

Solis Minerals Ltd ~~.~~ ARBN 653 083 026

1300 850 505 (within Australia) +61 3 9415 4000 (outside Australia)

Online:

www.investorcentre.com/contact

YOUR VOTE IS IMPORTANT

For your vote to be effective it must be received by 9:30am (AWST) on Monday, 1 December 2025.

CDI Voting Instruction Form

How to Vote on Items of Business

Each CHESS Depositary Interest (CDI) is equivalent to one share of Company Common Stock, so that every 1 (one) CDI registered in your name at 28 October 2025 entitles you to one vote.

You can vote by completing, signing and returning your CDI Voting Instruction Form. This form gives your voting instructions to CHESS Depositary Nominees Pty Ltd, which will vote the underlying shares on your behalf. You need to return the form no later than the time and date shown above to give CHESS Depositary Nominees Pty Ltd enough time to tabulate all CHESS Depositary Interest votes and to vote on the underlying shares.

Lodge your Form:

Online:

Lodge your vote online at

www.investorvote.com.au using your secure access information or use your mobile device to scan the personalised QR code.

Your secure access information is

SIGNING INSTRUCTIONS FOR POSTAL FORMS

Control Number: 188469

Individual: Where the holding is in one name, the securityholder must sign.

SRN/HIN:

Joint Holding: Where the holding is in more than one name, all of the securityholders should sign.

Power of Attorney: If you have not already lodged the Power of Attorney with the Australian registry, please attach a certified photocopy of the Power of Attorney to this form when you return it.

Companies: Only duly authorised officer/s can sign on behalf of a company. Please sign in the boxes provided, which state the office held by the signatory, ie Sole Director, Sole

Company Secretary or Director and Company Secretary. Delete titles as applicable.

By Mail:

Computershare Investor Services Pty Limited GPO Box 242 Melbourne VIC 3001 Australia

By Fax:

1800 783 447 within Australia or +61 3 9473 2555 outside Australia

PLEASE NOTE: For security reasons it is important that you keep your SRN/HIN confidential.

You may elect to receive meeting-related documents, or request a particular one, in electronic or physical form and may elect not to receive annual reports. To do so, contact Computershare.

322207_0_COSMOS_Sample_Proxy/000001/000001/i

to indicate your directions

Change of address. If incorrect, mark this box and make the correction in the space to the left. Securityholders sponsored by a broker (reference number commences with ‘ X ’) should advise your broker of any changes.

CDI Voting Instruction Form

Please mark

Step 1 CHESS Depositary Nominees Pty Ltd will vote as directed

Voting Instructions to CHESS Depositary Nominees Pty Ltd

I/We being a holder of CHESS Depositary Interests of Solis Minerals Ltd. hereby direct CHESS Depositary Nominees Pty Ltd to vote the shares underlying my/our holding at the Special Meeting of Solis Minerals Ltd. to be held at 3/32 Harrogate St, West Leederville, WA Australia 6007 on Thursday, 4 December 2025 at 9:30am (AWST) and at any adjournment or postponement of that meeting.

By execution of this CDI Voting Form the undersigned hereby authorises CHESS Depositary Nominees Pty Ltd to appoint such proxies or their substitutes to vote in their discretion on such business as may properly come before the meeting.

Step 2 Items of Business

PLEASE NOTE: If you mark the Abstain box for an item, you are directing CHESS Depositary Nominees Pty Ltd or their appointed proxy not to vote on your behalf on a show of hands or a poll and your votes will not be counted in computing the required majority.

VOTING RECOMMENDATIONS FOR RESOLUTION 1 - 6 ARE "FOR".

1. Resolution 1: Ratification of issue of Tranche 1 Placement CDIs

To consider and, if thought fit, to pass with or without amendment, an ordinary resolution to ratify the issue of 10,000,000 CDIs in accordance with ASX Listing Rule 7.1, as more particularly set out in the accompanying Information Circular.

2. Resolution 2: Approval to issue Tranche 2 Placement CDIs

To consider and, if thought fit, to pass with or without amendment, an ordinary resolution to ratify the issue of 107,000,000 CDIs in accordance with ASX Listing Rule 7.1A, as more particularly set out in the accompanying Information Circular.

3. Resolution 3: Approval to issue Director Placement CDIs

To consider and, if thought fit, to pass with or without amendment, an ordinary resolution to approve the issue of 1,000,000 CDI’s to Christopher Gale (and/or his nominee(s)), as more particularly set out in the accompanying Information Circular.

4. Resolution 4(a): Approval to issue Broker Options

To consider and, if thought fit, to pass with or without amendment, an ordinary resolution to ratify the issue of up to 10,000,000 Options to CPS Capital Group Pty Ltd. (and its nominees) in accordance with Listing Rule 7.1, as more particularly set out in the accompanying Information Circular.

5. Resolution 4(b): Approval to issue Broker Options

To consider and, if thought fit, to pass with or without amendment, an ordinary resolution to ratify the issue of up to 10,000,000 Options to Euroz Hartleys Limited (and its nominees) in accordance with Listing Rule 7.1, as more particularly set out in the accompanying Information Circular.

For Against Abstain

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For Against Abstain

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For Against Abstain

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For Against Abstain

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For Against Abstain

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6. Resolution 5: Ratification of issue of Corporate Advisor Options

To consider and, if thought fit, to pass with or without amendment, an ordinary resolution to ratify the issue of 10,000,000 Options to Alpine Capital Pty Ltd. (and its nominees) in accordance with Listing Rule 7.1, as more particularly set out in the accompanying Information Circular.

7. Resolution 6: Approval to issue Consideration Shares

To consider and, if thought fit, to pass with or without amendment, an ordinary resolution to ratify the issue of Consideration Shares to the Vendors (and/or their respective nominee(s)) in accordance with Listing Rule 7.1, as more particularly set out in the accompanying Information Circular.

For Against Abstain

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For Against Abstain

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Signature of Securityholder(s)

This section must be completed.

Step 3 Individual or Securityholder 1 Securityholder 2 Securityholder 3 / / Sole Director & Sole Company Secretary Director Director/Company Secretary Date Update your communication details (Optional) By providing your email address, you consent to receive future Notice Mobile Number Email Address of Meeting & Proxy communications electronically

SLM