Committees: Safety and health committee; Audit and risk committee

Sindiswa (Sindi) Zilwa is a Sibanye-Stillwater independent non-executive director and was appointed on 1 January 2021. A chartered accountant by profession, Sindi is an expert in the areas of accounting, auditing, governance, transformation and business management. Sindi is also a chartered director (SA) and has vast experience as a director in the public and private sectors, currently serving as a non-executive director of Cell C Limited, Delta Property Fund Limited, Gijima Group Limited, Mercedes-Benz South Africa Limited, Metrofile Limited and Tourvest Group Proprietary Limited and was recently appointed as an independent non-executive director of the ABSA Group Limited with effect from 1 April 2025. She is an author of “The ACE Model-Winning Formula for Audit Committees”, formerly used by the Institute of Directors to train audit committee members in South Africa, and the author of “Creating Board and Committee Effectiveness”. She is a member of the South African Institute of Chartered Accountants and Institute of Directors. Sindi was the co-founder and retired Chief Executive Officer of Nkonki Incorporated, having held the position from 1993 to 2016. Her other former non-executive directorships over the past five years included AngloGold Ashanti Limited (AngloGold), Aspen Pharmacare Holdings Limited, Consol Holdings Proprietary Limited, Consol Glass Proprietary Limited, Discovery Limited, Massmart Limited and Redefine Properties Limited. In 2023, Sindi completed a cybersecurity certificate programme at Harvard University online, entitled “Cybersecurity: Managing Risk in the Information Age”. On 23 August 2025, Sindi was honoured and awarded an Honorary Doctorate in Business by HBI University, Connecticut, USA, and the prestigious Black Excellence Lifetime Achievement Award, a recognition of her remarkable and impactful journey in the accountancy profession in business, entrepreneurship, governance and transformation.