Master Drilling Group Limited (Incorporated in the Republic of South Africa) (Registration number 2011/008265/06) JSE share code: MDI ISIN: ZAE000171948 (“Master Drilling” or the “Company” or “the Group”) EXERCISE OF CALL OPTION TO ACQUIRE JUST ABOVE 51% OF THE SHARES IN THE A&R GROUP OF COMPANIES (“A&R GROUP”) 1. INTRODUCTION Shareholders are referred to the announcement released on SENS on 30 July 2021 which advised that Master Drilling Mining Services (Proprietary) Limited (“MDMS”), a wholly owned subsidiary of Master Drilling, had acquired just above 25% interest in the A&R Group from the following shareholders: A&R Holdings (Pty) Ltd, Lamproom Solutions (Pty) Ltd, Tsimpilo Trading 98 (Pty) Ltd, the JJ van Niekerk Trust, Stellane Enterprises (Pty) Ltd, Ryan Mark Seath Lishman and Johann Haarhoff (“the Acquisition”). In terms of the Acquisition MDMS had a call option (“the call option”) to subsequently increase its shareholding in the A&R Group to just above 51% within a period of two years (“the call option exercise”). 2. EXERCISE OF CALL OPTION AND PURCHASE CONSIDERATION Shareholders are advised that MDMS has now exercised the call option and acquired further shares taking its shareholding in the A&R Group to just above 51%. The purchase consideration for the call option exercise will be determined in accordance with an agreed formula on the completion of the audit of the 2022 Annual Financial Statements of the A&R Group and is presently estimated to be ZAR129,4 million based on the existing management accounts of the A&R Group, subject to 1 any adjustments arising during the audit. The purchase price is capped at a maximum of ZAR240,1 million. The purchase consideration shall be financed from internal resources. 3. RATIONALE The investment in the A&R Group is aligned with the strategic intent of Master Drilling to diversify its range of services to include services that are not necessarily drilling related but focused on technology that can improve the safety and operational performance of miners globally. This transaction will better diversify overall market exposure and add additional revenue streams to the Master Drilling Group. 4. CONDITIONS PRECEDENT All conditions precedent were fulfilled at the time of the initial purchase, other than board approvals to exercise the option, which have since been obtained. 5. EFFECTIVE DATE The effective date of the purchase is 29 August 2022. 6. VALUE OF THE NET ASSETS ACQUIRED AND PROFITS AFTER TAX A&R Group comprises capital-light businesses with short return on investment cycles, and minimal working capital needed for the deployment of projects. The businesses are also highly cash generative and have experienced stable earnings in the past five years, making A&R Group a sound investment for Master Drilling. The book value of A&R Group’s net assets as at February 2021, being the date of its last audited annual financial statements, was ZAR118 million. The audited profit after tax attributable to the A&R Group for the period ended February 2021, was ZAR26,5 million. This amount is net of interest on shareholder loan accounts and payments to shareholders in respect of intellectual property, in all of which MDMS is acquiring the 51% plus interest referenced in Paragraph 2 above. 2 7. CATEGORISATION The call option exercise when based on the maximum possible purchase consideration is a Category 2 transaction as contemplated in the Listings Requirements of the JSE Limited. Fochville 29 August 2022 Investment Bank and Sponsor Investec Bank Limited 3