| 17/06/24 | 07:00:07 | 17 Jun 2024 | | Cancellation - Horizonte Minerals Plc |
| 16/05/24 | 14:50:31 | 16 May 2024 | | Appointment of Administrators |
| 16/05/24 | 07:30:00 | 16 May 2024 | | Suspension - Horizonte Minerals Plc |
| 16/05/24 | 07:00:13 | 16 May 2024 | | Notice of resolution to appoint administrators |
| 01/05/24 | 07:00:11 | 1 May 2024 | | Corporate Update |
| 15/04/24 | 07:00:09 | 15 Apr 2024 | | Corporate Update |
| 02/04/24 | 07:00:13 | 2 Apr 2024 | | Corporate Update |
| 28/03/24 | 13:39:28 | 28 Mar 2024 | | Corporate Update |
| 14/03/24 | 16:40:32 | 14 Mar 2024 | | Araguaia Project Update |
| 01/03/24 | 07:00:08 | 1 Mar 2024 | | Corporate Update |
| 23/02/24 | 10:52:19 | 23 Feb 2024 | | Holding(s) in Company |
| 19/02/24 | 16:53:03 | 19 Feb 2024 | | Updated Capex and Schedule Estimate |
| 18/01/24 | 16:57:26 | 18 Jan 2024 | | APPOINTMENT OF NICHOLAS MICHAEL TO THE BOARD |
| 10/01/24 | 17:35:22 | 10 Jan 2024 | | TR-1: Standard notification of major holdings |
| 27/12/23 | 07:00:04 | 27 Dec 2023 | | INTERIM US$20M FUNDING PACKAGE SIGNED |
| 19/12/23 | 14:32:35 | 19 Dec 2023 | | ARAGUAIA PROJECT UPDATE |
| 18/12/23 | 17:55:06 | 18 Dec 2023 | | APPOINTMENT OF BOARD MEMBERS |
| 27/11/23 | 07:00:11 | 27 Nov 2023 | | BOARD AND MANAGEMENT CHANGES |
| 14/11/23 | 08:02:44 | 14 Nov 2023 | | ARAGUAIA PROJECT UPDATE |
| 23/10/23 | 07:00:11 | 23 Oct 2023 | | Q3 2023 Construction Update |
| 12/10/23 | 07:00:12 | 12 Oct 2023 | | Holding(s) in Company |
| 05/10/23 | 07:00:06 | 5 Oct 2023 | | Holding(s) in Company |
| 02/10/23 | 07:00:04 | 2 Oct 2023 | | Update on Araguaia Nickel Project Construction |
| 14/09/23 | 13:00:02 | 14 Sept 2023 | | EXERCISE OF OPTIONS AND TOTAL VOTING RIGHTS |
| 12/09/23 | 07:00:07 | 12 Sept 2023 | | PASSING OF FORMER CHAIR AND CO-FOUNDER |
| 24/08/23 | 07:00:05 | 24 Aug 2023 | | Operations Director Appointed for Araguaia Project |
| 17/08/23 | 07:00:03 | 17 Aug 2023 | | Interim Financial Results |
| 03/08/23 | 07:00:09 | 3 Aug 2023 | | Q2 2023 Araguaia Construction Update |
| 02/08/23 | 07:00:07 | 2 Aug 2023 | | Notice of Investor Presentation |
| 27/07/23 | 15:00:00 | 27 Jul 2023 | | Exercise of Options and Total Voting Rights |
| 25/07/23 | 07:00:13 | 25 Jul 2023 | | APPOINTMENT OF JOINT CORPORATE BROKER |
| 13/07/23 | 07:00:07 | 13 Jul 2023 | | Award of Options |
| 11/07/23 | 07:00:05 | 11 Jul 2023 | | Board Appointments |
| 07/07/23 | 11:03:52 | 7 Jul 2023 | | Holding(s) in Company |
| 06/07/23 | 07:00:09 | 6 Jul 2023 | | MINING APPROVAL RECEIVED FOR ARAGUAIA |
| 29/06/23 | 07:00:06 | 29 Jun 2023 | | DELIVERY OF ROTARY KILN |
| 15/06/23 | 07:00:06 | 15 Jun 2023 | | Araguaia Nickel Project Pictorial Update |
| 24/05/23 | 16:37:12 | 24 May 2023 | | Result of AGM |
| 24/05/23 | 07:00:12 | 24 May 2023 | | HORIZONTE MINERALS PLC 2022 SUSTAINABILITY REPORT |
| 23/05/23 | 16:05:18 | 23 May 2023 | | TR-1: Notification of Major Holdings |
| 23/05/23 | 16:01:18 | 23 May 2023 | | TR-1: Notification of Major Holdings |
| 28/04/23 | 07:00:09 | 28 Apr 2023 | | Notice of AGM |
| 24/04/23 | 07:00:06 | 24 Apr 2023 | | Araguaia Construction Update |
| 19/04/23 | 07:00:06 | 19 Apr 2023 | | Notice of Investor Presentation |
| 31/03/23 | 16:07:00 | 31 Mar 2023 | | Exercise of Options and Total Voting Rights |
| 29/03/23 | 07:00:06 | 29 Mar 2023 | | FINAL RESULTS FOR THE YEAR ENDED 31 DECEMBER 2022 |
| 06/03/23 | 07:00:02 | 6 Mar 2023 | | Araguaia Line2 Feasibility Study Contracts Awarded |
| 27/02/23 | 07:00:08 | 27 Feb 2023 | | Second drawdown complete |
| 24/02/23 | 09:04:07 | 24 Feb 2023 | | TR-1: Notification of Major Holdings |
| 16/02/23 | 07:00:07 | 16 Feb 2023 | | HORIZONTE MINERALS PICTORIAL UPDATE |
