  THIS IS THE 
  AECI Board of Directors

Philisiwe Sibiya

Independent Non-executive
Director and Chairman

Philisiwe is the founder and Chief Executive Officer of the Shingai Group. With nearly two decades of executive leadership experience across the African continent, she has proven ability to navigate complex regulatory and operational environments across Africa. She has held senior roles, including Chief Financial Officer of MTN South Africa and Chief Executive Officer of MTN Cameroon, where she made history as the first woman appointed to a Chief Executive Officer position within the MTN Group. She serves as a non-executive director of Gold Fields Limited.

Her expertise spans finance, governance, IT, risk management and strategic investment. She offers strong financial leadership and governance oversight. Her leadership as Chairman reinforces AECI’s strategic oversight and Board effectiveness, while her entrepreneurial perspective supports the Board’s focus on growth and innovation.

Qualifications

BCom (Hons) Accountancy, CA (SA)

Appointed

Appointed to the Board in 2018 and Chairman in 2025

Walter Dissinger

Lead Independent
Non-executive Director

Walter has more than 30 years of global leadership experience in the industrial and chemical sectors. He previously served as Global Chief Executive Officer of Votorantim Cimentos SA, a leading international building materials company based in Brazil. Prior to that, he held senior executive roles at BASF across Argentina, Brazil and Germany, including being the Global President of the Nutrition and Health division and Senior Vice President Latam for Crop Protection Products and Performance Chemicals, including mining chemicals. He serves as an independent director on the boards of Tenda Atacado, Grupo Baumgart, Group Tigre and Evora Group in Brazil.

His extensive experience in the global industrial and chemical sectors brings valuable industry perspective to his role as Lead Independent Director and contributes to the Board’s deliberations on AECI’s long-term growth and resilience.

Qualifications

MEng (Industrial)

Appointed

Appointed to the Board in 2020

Steve Dawson

Independent
Non-executive Director

Steve is the Chief Executive Officer of Nomad Breads. His extensive international career includes executive leadership roles at Incitec Pivot Limited and Dyno Nobel, where he oversaw operations, safety and risk management in the explosives and fertiliser sectors. Earlier in his career, he gained valuable experience in South Africa's mining sector as Operations and Marketing Manager of AECI's explosives business.

His extensive experience in the global industrial and chemical sectors brings valuable industry perspective to his role as Lead Independent Director and contributes to the Board’s deliberations on AECI’s long-term growth and resilience.

Qualifications

Australian BSc (Hons)

Appointed

Appointed to the Board in 2020

Billy Mawasha

Independent
Non-executive Director

Billy is an accomplished mining executive with leadership experience across some of South Africa’s most prominent mining houses. He has held senior roles at De Beers, AngloGold Ashanti and Kumba Iron Ore, served as Country Head of Rio Tinto South Africa and as Managing Director of Richards Bay Minerals. He is the founder and Chief Executive Officer of Kolobe Nala Investment Company and serves as a non-executive director of Exxaro Resources Limited.

His engineering background and leadership of complex mining operations supports the Board’s oversight of performance, safety, execution discipline and asset-intensive environments. He brings practical insight into managing risk and stakeholder complexity, supporting reliable delivery and value creation.

Qualifications

BSc Electrical Engineering

Appointed

Appointed to the Board in 2025

July Ndlovu

Independent
Non-executive Director

July is a seasoned mining executive with over 30 years of experience across multiple commodities and global markets. Since 2007, he has held senior leadership roles, successfully leading large-scale projects and mergers and acquisitions with multiple listings in Southern Africa and Australia. He served on the Board of Thungela Resources Limited and currently serves on the Caledonia Mining plc Board and is the Chairman of the Coal Industry Advisory Board.

His global mining experience and strong emphasis on safety and operational excellence contribute important industry insight to the Board’s deliberations on long-term performance.

Qualifications

BSc Metallurgical Engineering, MBL

Appointed

Appointed to the Board in 2025

Marna Roets

Independent
Non-executive Director

Marna is a senior business leader with extensive expertise in financial services, banking and corporate finance. She has held executive roles in major banking institutions and brings significant experience in financial reporting, audit, risk, IT, capital allocation and governance. She serves as a director of Zeda Limited and MCB Group Limited (Mauritius). She is skilled in operational efficiency, programme execution and the application of digital and data-driven solutions to support strategic transformation.

Her financial services, banking and IT experience adds valuable perspective to the Board’s deliberations on reporting, risk, governance, capital allocation, and strategic transformation. She supports disciplined oversight of risk, IT and reporting, with a focus on financial integrity, resilience and trust

Qualifications

BCom (Hons) Accountancy, CA(SA)

Appointed

Appointed to the Board in 2020

Dean Murray

Interim Group
Chief Executive Officer

Dean has over 18 years of experience within AECI and extensive knowledge of the Group's chemical operations. He joined AECI in 2006 as Managing Director of Chemiphos and subsequently led Lake International. He became a member of the AECI Chemicals Executive team in 2013 and was appointed to the Group Executive Committee in 2019.

His institutional knowledge, decades of operational leadership at AECI and track record in the chemicals sector reinforce the Board’s focus on operational performance, execution and value creation.

Qualifications

National Diploma in Chemical Engineering Global Executive Development Programme (GIBS)

Appointed

Appointed to the Executive Committee in January 2019

Ian Kramer

Group
Chief Financial Officer

Ian is a Chartered Accountant with more than 30 years of financial leadership experience across global mining and professional services organisations. He was appointed permanent Group Chief Financial Officer (CFO) and an Executive Director of AECI in June 2025, following his tenure as interim Group CFO. Prior to joining AECI, he held senior finance leadership roles at AngloGold Ashanti, including Vice President: Group Finance and Interim CFO. Earlier in his career, he was an audit and advisory partner at KPMG in South Africa and Canada.

He brings financial leadership in strategy, capital management and risk oversight, supporting the Board’s focus on responsible growth and financial resilience.

Qualifications

BCom (Hons) Accountancy, CA(SA)

Appointed

Appointed to the Executive Committee in December 2024

AECI Executive Leadership

The Executive Committee implements the Board-approved strategy, manages day-to-day operations and leads performance delivery across the Group. During the year, we reinforced organisational continuity following leadership, Executive team and operating model changes, strengthened delivery discipline and improved reporting, controls and governance to support effective decision making and accountability.

Dean Murray

Interim Group
Chief Executive Officer

Dean has more than 18 years of experience at AECI across the Group’s chemical operations. He joined AECI in 2006 as Managing Director of Chemiphos, later led Lake International, and joined the AECI Chemicals Executive in 2013 and the AECI Executive Committee in 2018. He currently serves as Interim CEO and continues to support the AECI Chemicals team.

His institutional knowledge, operational experience at AECI and track record in the chemicals sector support the Group’s focus on operational performance and value creation.

Qualifications

National Diploma in Chemical Engineering Global Executive Development Programme, Gordon Institute of Business Science

Appointed

Appointed to the Executive Committee in January 2019

Ian Kramer

Group
Chief Financial Officer

Ian is a Chartered Accountant with more than 30 years of experience. He has held senior finance roles at AngloGold Ashanti, where he led key initiatives in corporate restructuring, external reporting and treasury. Before that, he was an audit and advisory partner at KPMG in South Africa and Canada. His expertise spans financial management, taxation, risk and IT. At AECI, he is responsible for overseeing the Group’s financial strategy and supporting its growth.

His experience in financial strategy, capital management and risk oversight supports the Group’s focus on responsible growth and financial resilience.

Qualifications

B.Com (Hons) Accountancy, University of Pretoria CA (SA), The South Africa Institute of Chartered Accountants (SAICA)

Appointed

Appointed to the Executive Committee in December 2024

Stuart Miller

Executive Vice President:
AECI Mining

With more than 25 years of international experience in the mining industry, Stuart has led operations across over 20 countries in the EMEA and Asia-Pacific regions. Prior to joining AECI, he served as Vice President at Orica Asia.

His global mining experience and operational leadership support AECI Mining’s strategy and performance.

Qualifications

BEng Mining

Appointed

Appointed to the Executive Committee in 2024

Cheryl Singh

Group Company Secretary
and General Counsel

Cheryl is an admitted attorney with two decades of experience in legal, governance, compliance and risk management across listed and unlisted entities. She previously served as Company Secretary of Afrox Limited.

Her legal and governance leadership supports ethical conduct, compliance and corporate stewardship across the Group.

Qualifications

BProc, LLB, MBA (GIBS)

Appointed

Appointed to the Executive Committee in 2021

Chantal van Dyk

Interim
Group Chief People Officer

Chantal joined AECI in December 2025 as Head of Remuneration and Reward and has focused on strengthening reward governance, frameworks, reporting and strategic alignment across the Group. Prior to AECI, she held senior HR and rewards leadership roles at AngloGold Ashanti and BHP Billiton, including serving as Vice President, Remuneration and Benefits at AngloGold Ashanti.

Her people and reward leadership experience supports alignment between reward frameworks and business performance in multinational environments.

Qualifications

BCom Hons Tax Diploma UNISA

Appointed

Appointed to the Executive Committee in 2026

THIS IS THE AECI Board of Directors

Philisiwe Sibiya

Walter Dissinger

Steve Dawson

Billy Mawasha

July Ndlovu

Marna Roets

Dean Murray

Ian Kramer

AECI Executive Leadership

Dean Murray

Ian Kramer

Stuart Miller

Cheryl Singh

Chantal van Dyk

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