| 5 Oct 2026, 08:14 | Macmahon Secures Two-Year $98m Extension at Daisy Milano | Company Update | — | 11001 |
| 21 Sept 2026, 13:41 | Change of Director's Interest Notice - Michael Finnegan | Director Interests | — | 02009 |
| 21 Sept 2026, 08:17 | Notice of 2026 Annual General Meeting | Meetings & Governance | — | 08001, 08004, 16002 |
| 18 Sept 2026, 11:49 | Notification regarding unquoted securities - MAH | Securities Administration | — | 06021 |
| 18 Sept 2026, 08:15 | Macmahon to Acquire Aspect Engineering Solutions | Mergers & Acquisitions | MS | 07001, 11001 |
| 10 Sept 2026, 16:54 | Change in substantial holding | Substantial Holders | — | 02002 |
| 10 Sept 2026, 15:23 | Response to ASX Letter about Director Trading | ASX Query | — | 14013, 17003 |
| 4 Sept 2026, 12:20 | Change of Director's Interest Notice - Michael Finnegan | Director Interests | — | 02009 |
| 2 Sept 2026, 13:26 | Final Director's Interest Notice - David Gibbs | Director Interests | — | 02010 |
| 1 Sept 2026, 16:06 | Notification regarding unquoted securities - MAH | Securities Administration | — | 06021 |
| 1 Sept 2026, 13:10 | Macmahon Non-Executive Director Resignation | Company Administration | — | 12001 |
| 1 Sept 2026, 08:16 | Macmahon Signs Contract for Groundrush Underground | Company Update | — | 11001 |
| 31 Aug 2026, 08:25 | TAM: Groundrush Decline Agreement Signed | Other | MS | — |
| 31 Aug 2026, 08:09 | MGX:Groundrush decline agreement signed | Other | MS | — |
| 26 Aug 2026, 07:58 | Date of AGM and Closing Date for Director Nominations | Meetings & Governance | — | 08006 |
| 24 Aug 2026, 08:00 | Macmahon Awarded $485m Extension at Telfer | Company Update | MS | 11001 |
| 19 Aug 2026, 12:25 | Change of Director's Interest Notice - Greg Evans | Director Interests | — | 02009 |
| 19 Aug 2026, 12:22 | Change of Directors' Interest Notice - Dharmendra Chandran | Director Interests | — | 02009 |
| 19 Aug 2026, 11:55 | Notification regarding unquoted securities - MAH | Securities Administration | — | 06021 |
| 18 Aug 2026, 07:53 | Dividend/Distribution - MAH | Dividends & Distributions | — | 10001, 10002, 10003 |
| 18 Aug 2026, 07:52 | Macmahon Appendix 4G 2026 | Company Administration | — | 03025 |
| 18 Aug 2026, 07:47 | Macmahon Corporate Governance Statement 2026 | Company Administration | — | 03024 |
| 18 Aug 2026, 07:46 | Macmahon Full Year Results Presentation FY26 | Financial Results | MS | 03003, 03026 |
| 18 Aug 2026, 07:46 | Macmahon Delivers Strong Revenue and Earnings in FY26 | Financial Results | MS | 03003, 10003 |
| 18 Aug 2026, 07:46 | Macmahon Annual Report 2026 | Financial Results | — | 03001, 03002, 03011, 03012, 03013, 03020 |
| 18 Aug 2026, 07:46 | Macmahon Appendix 4E FY26 | Financial Results | MS | 03003, 10001, 10002, 10003 |
| 17 Aug 2026, 08:01 | Macmahon Enters Strategic Partnership on Homeground | Mergers & Acquisitions | MS | 07002, 11001 |
| 13 Aug 2026, 08:17 | Macmahon Secures $50m Early Works Contract | Company Update | — | 11001 |
| 12 Aug 2026, 08:15 | Macmahon Selected as Preferred Mining Contractor | Company Update | MS | 11001 |
| 11 Aug 2026, 08:15 | Macmahon Awarded $406m Underground Mining Contract | Company Update | — | 11001 |
| 10 Aug 2026, 18:31 | Change of Directors' Interest Notice - David Gibbs | Director Interests | — | 02009 |
| 7 Aug 2026, 08:21 | 2026 Full Year Results Date and Conference Call Details | Periodic Reports | — | 03027 |
| 16 July 2026, 08:16 | Change of Director's Interest Notice - Arief Sidarto | Director Interests | — | 02009 |
| 16 July 2026, 08:16 | Change of Director's Interest Notice - Tom Quinn | Director Interests | — | 02009 |
| 16 July 2026, 08:16 | Change of Director's Interest Notice - Suzan Pervan | Director Interests | — | 02009 |
| 16 July 2026, 08:16 | Change of Director's Interest Notice - Greg Evans | Director Interests | — | 02009 |
| 15 July 2026, 08:19 | Macmahon Executes $355m Mt Marion Underground Contract | Company Update | — | 11001 |
| 13 July 2026, 12:33 | Notification regarding unquoted securities - MAH | Securities Administration | — | 06021 |
| 23 June 2026, 08:15 | Release from Voluntary Escrow | Securities Administration | — | 06009 |
| 17 June 2026, 12:25 | Investor Presentation - Euroz Hartleys | Presentations | — | 03026 |
| 27 May 2026, 08:21 | Macmahon Awarded Extension at Majestic | Company Update | — | 11001 |
| 1 May 2026, 08:17 | Initial Director's Interest Notice - Arief Sidarto | Director Interests | — | 02008 |
| 29 Apr 2026, 09:21 | Appointment of Non-Executive Director | Company Administration | — | 12001 |
| 21 Apr 2026, 08:40 | TAM: CTPJV SELECTS MACMAHON AS PREFERRED CONTRACTOR | Other | — | — |
| 21 Apr 2026, 08:38 | MGX: CTPJV Selects Preferred Contractor Exploration Decline | Other | — | — |
| 21 Apr 2026, 08:37 | Macmahon Selected Preferred Mining Contractor at Groundrush | Company Update | — | 11001 |
| 2 Apr 2026, 13:32 | Notification of cessation of securities - MAH | Securities Administration | — | 06027 |
| 25 Mar 2026, 08:15 | Macmahon Engaged for Restart of Mining at Wonawinta | Company Update | — | 11001 |
| 23 Mar 2026, 08:10 | Macmahon Progresses Engagement for Mining at Mount Carlton | Company Update | — | 11001 |
| 18 Mar 2026, 08:19 | Investor Presentation - Euroz Hartleys Rottnest Conference | Presentations | — | 03026 |