Moon River Moly Ltd. — Proxy Solicitation & Information Statement 2026

Apr 15, 2026

TMX

THE FUTURE IS YOURS TO SEE.

TSX TRUST COMPANY

VIA ELECTRONIC TRANSMISSION

April 15, 2026

TO ALL APPLICABLE EXCHANGES AND COMMISSIONS:

RE: MOON RIVER MOLY LTD. Confirmation of Notice of Record and Meeting Dates

We are pleased to confirm that the Notice of Record and Meeting Dates was sent to The Canadian Depository for Securities.

We advise the following with respect to the upcoming Annual and Special Meeting of Security Holders for the subject issuer:

1. ISIN: CA6154521091 CUSIP: 615452109

2. Date Fixed for the Meeting: June 9, 2026

3. Record Date for Notice: May 8, 2026

4. Record Date for Voting: May 8, 2026

5. Beneficial Ownership Determination Date: May 8, 2026

6. Classes or Series of Securities that entitle the holder to receive Notice of the Meeting: COMMON SHARES

7. Classes or Series of Securities that entitle the holder to vote at the meeting: COMMON SHARES

8. Business to be conducted at the meeting: Annual and Special

9. Notice-and-Access:

• Registered Shareholders: NO
• Beneficial Holders: NO
• Stratification Level: Not Applicable

1. Reporting issuer is sending proxy-related materials directly to Non-Objecting Beneficial Owners: YES
2. Issuer paying for delivery to Objecting Beneficial Owners: YES

Yours truly, TSX Trust Company

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