MAC Copper Limited Provides Closing Timetable for Scheme with Harmony

MAC Copper Limited ARBN 671 963 198 (NYSE:MTAL; ASX:MAC)

MAC Copper Limited (NYSE:MTAL, ASX:MAC) (“MAC” or the “Company”) is pleased to provide the following update on the proposed acquisition of 100% of the issued share capital in MAC by Harmony Gold (Australia) Pty Ltd (a wholly owned subsidiary of Harmony Gold Mining Company Limited (JSE:HAR, NYSE:HMY)) (“Harmony”) by way of a Jersey law scheme of arrangement pursuant to Article 125 of the Companies (Jersey) Law 1991 (as amended) (“Scheme”).

Capitalised terms used in this announcement have the meaning given to them in the Scheme Circular, a copy of which is attached to MAC’s announcement released on 31 July 2025.

Proposed closing timetable for the Transaction

Subject to the Court making orders sanctioning the Scheme at the Court Sanction Hearing scheduled to be held at 10:00 am (Jersey time) on 9 October 2025, the proposed closing timetable for the Transaction is as follows:

Event	Date and time (Jersey time)1
Conversion of MAC CDIs into MAC Shares ceases	4:00 pm (Sydney time) on 9 October 2025
Conversion of MAC Shares into MAC CDIs ceases	4:00 pm (New York time) on 9 October 2025
Effective Date	10 October 2025
Last day of dealings in MAC CDIs on the ASX2	10 October 2025 (close of trading on the ASX)
Last day of dealings in MAC Shares on the NYSE3	10 October 2025 (close of trading on the NYSE)
Suspension of quotation of MAC CDIs on the ASX	13 October 2025 (before trading opens on the ASX)
Initiate delisting of MAC Shares from the NYSE4	14 October 2025 (before trading opens on the NYSE)
Scheme Record Time	5:00 pm (New York time) on 17 October 2025 for Scheme Shareholders 7:00 pm (Sydney time) on 17 October 2025 for MAC CDI Holders
Complete delisting of MAC Shares from the NYSE	24 October 2025
Implementation Date