EXECUTIVE & SECRETARY

SENIOR MANAGERS

KHOTSO MOKHELE (BORN 1955)
Chairman
Khotso joined the board in 2016 and took up his position as chairman a year later. He is also chairman of the Nomination, Governance and Director’s Affairs Committee, and the Investment, Innovation and Technology Committee. In addition, he is a member of the Remuneration and Human Capital Committee, and the Social, Ethics and Sustainability Committee. Khotso is the lead independent non-executive director at the MTN Group, non-executive director at Seasoned Capital and Hans Merensky Holdings and president of the Hans Merensky Foundation.
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STEVE DAWSON (BORN 1964)
Non-executive director
SSteve joined the board in 2020. He chairs the safety, Health and Environment Committee and is member of the Risk Committee and Investment, Innovation and Technology Committee. In his career Steve has fulfilled senior global roles at Dyno Nobel and Incitec Pivot across sales, operations, safety and risk related to explosives and fertilisers. He is currently CEO of Nomad Breads Proprietary Limited.
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FIKILE DLUDLU (DE BUCK)(BORN 1960)
Non-executive Director
Fikile joined the AECI Board in 2019. She chairs the Social, Ethics and Sustainability Committee, and is a member of the Audit Committee and the Remuneration and Human Capital Committee. She is an Independent Non-executive Director on the board of Mercedes-Benz South Africa, where she chairs the Audit Committee and is a member of the Social, Ethics and Sustainability Committee. Fikile has more than 23 years’ financial experience in an executive capacity and was, among others, COO/CFO at The Council for Medical Schemes and Treasurer at BDC in Botswana. Fikile is the founding President of the South Africa Chapter of the Global Forum of Women Entrepreneurs. She is also a member of Women in Mining South Africa.
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WALTER DISSINGER (BORN 1962)
Non-executive Director
Walter joined the board in 2020. He is the chairman of the Risk Committee and a member of the Investment, Innovation and Technology Committee, and the Safety, Health and Environment Committee. Walter is an independent non-executive director at a number of international companies in Brazil. He served as CEO of Votorantim Cimentos S.A. and prior to that he held senior positions at BASF in South America and globally.
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GODFREY GOMWE (67)
Non-executive Director
Godfrey has served on the AECI Board since 2015. He is Chairman of the Remuneration Committee and the AECI Mining Financial Review Committee as well as a member of the Audit, Nomination and Investment Committees.

Godfrey is an Independent Non-executive Director of Orion Minerals and Econet Wireless Zimbabwe and serves on the boards of a number of non-listed entities.

In his career he was, among others, Chief Executive of Anglo American Thermal Coal and was also responsible for Anglo American’s manganese interests in the joint venture with BHP Billiton.
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MARNA ROETS (BORN 1967)
Non-executive Director
Marna joined the Board in 2020. She is a member of the AECI Audit, Remuneration and Human Capital and Social, Ethics and Sustainability Committees and the AECI Captive Insurance Financial Review Committee. Marna has extensive experience in business, financial services, banking, corporate finance and auditing. She has served as an executive at major banking groups on the African continent. Marna is a non-executive director and shareholder of No More Plastic, a company that manufactures biodegradable products.
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PHILISIWE SIBIYA (BORN 1977)
Non-executive Director
Philisiwe was appointed to the Board in 2018. She chairs the Audit Committee and is a member of the Risk Committee and Nomination, Governance and Director’s Affairs Committee. Other directorships include the Investec Group and GoldFields. She is also CEO and Chair of the Shingai Group, the investment holding company she founded. Philisiwe was formerly CFO at MTN South Africa and CEO at MTN Cameroon.
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PATTY MISHIC O’BRIEN (BORN 1965)
Non-executive Director
Patricia (Patty) joined the Board Patty joined the Board in 2021. She is a member of the Social, Ethics and Sustainability; Risk; and Safety, Health and Environment Committees. She is an independent non-executive director at SE Advanced Materials in the USA and also serves on an advisory board in Europe.

Patty served as the chief commercial officer at US-based CoorsTek Inc. Her experience in the chemicals industry includes her time as chief marketing officer at A. Schulman (now part of LyondellBasell) and as global director of marketing excellence at Dow Inc.
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SAMUEL COETZER (BORN 1961)
Non-executive Director
Sam joined the Board in 2022. He is a member of the Investment, Innovation and Technology Committee as well as the Safety, Health and Environment Committee. He is a global mining executive with over 30 years’ international experience, operating in Canada, the USA, South America, Australia, Tanzania, Fiji and South Africa. Sam has held numerous senior leadership positions at international companies including Harte Gold Corp., Golden Star Resources, Kinross Gold, Xstrata and Placer Dome/Barrick and brings extensive global knowledge of underground and open-pit mining operations.
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NEIL FRANKLIN (51)
Group Safety, Health and Environment (“SHE”) Manager
Neil is AECI’s Group Safety, Health and Environment (“SHE”) Manager, appointed in 2017. He has extensive experience in SHE risk management in mining and petrochemical manufacturing across small and large operating sites globally.
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TONI SERRA (58)
Chief Information Officer
Toni is AECI’s Chief Information Officer with overall responsibility for managing IT operations, including the formulation and implementation of the Group’s IT strategy. He has extensive experience in the IT field, including that gained in his role as Chief Information Officer at Nampak.
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IWAN SCHUTTE (48)
Group’s Internal Audit Manager
Iwan is the Group’s Internal Audit Manager. Prior to this position he was Divisional Internal Audit Manager responsible for the former Specialty Chemicals segment. He joined AECI in 2004.
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GRAHAM THOMPSON (44)
Group Financial Manager
Graham is Group Financial Manager with overall responsibility for the Group’s finance and tax functions. He joined AECI in 2005 as Group Accountant.
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GUGU MTHETHWA (60)
Group M&A Manager
Gugu is Group M&A Manager. She joined AECI in 2011. Her work experience includes various roles in the chemical processing and pulp manufacturing industries, as well as investment banking.
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TREVOR STARKE (51)
Group Treasurer
Trevor is Group Treasurer with overall responsibility for treasury functions, Corporate Centre accounting and office management. He joined AECI in 1997 and worked in Group Accounting before moving to the Treasury in 1999.
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FULVIA PUTERO (57)
AECI’s Corporate Communications and Investor Relations Manager
Fulvia is AECI’s Corporate Communications and Investor Relations Manager. A graduate of the University of the Witwatersrand, she joined the Group’s Publicity Department as a Junior Press Officer in 1986.
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HOLGER RIEMENSPERGER (BORN 1970)
Chief Executive
Holger has been appointed AECI Group Chief Executive and Executive Director with effect from 1 May 2023. He has held many executive and senior management positions in leading companies across Germany, the USA, Switzerland, the Netherlands, Sweden and Malaysia and has extensive expertise in the mining, chemicals, agricultural and manufacturing sectors. These include global vice president and senior management roles at Bunge Lodgers Croklaan, BASF, Frutarom and AkzoNobel. His most recent role was as chief operating officer and executive director of the K+S Group AG (Germany).
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RAFAEL FERNANDES
Group Chief Financial Officer
Rafael was appointed as acting CFO of AECI with effect from 26 April 2023. In addition to being a qualified chartered accountant with a B.Com Honours degree in Accounting, he has an ACMA qualification from CIMA and has completed the Strategic Financial Leadership Programme at Stanford University. Rafael has served as CFO of AECI Mining since 2015.
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MARK KATHAN (BORN 1970)
CEO of AECI Mining and Executive Director
Mark is an executive Director of AECI and CEO of AECI Mining, the group’s largest and most international business. Prior to taking up his role at AECI Mining in May 2022, he was AECI’s CFO for 13 years. Mark’s career has included his time as financial director for South Africa and Africa at Nampak. In 2021, his contribution to his profession was acknowledge when he was named winner of the Finance & Technology award at South Africa’s prestigious annual CFO Awards.
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JOHN MAHLASE (61)
Group Executive Committee as Acting Group Executive: Human Capital
John joined the Group in 1995. He is currently the Human Capital Executive for AECI Mining.

During his career, John has served in several roles including Group Industrial Relations Manager, Group Human Resources Manager and Group Transformation Manager.

John joined the Group Executive Committee as Acting Group Executive: Human Capital in April 2022 following the resignation of Candice Watson.
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DEAN MULQUEENY (56)
Executive
Dean is Group Executive: Water and Chairman of AECI Much Asphalt. He also oversees the AECI Growth Office which spearheads the Group’s innovation drive.

Dean joined Chemserve as a Sales Representative in 1990 and held several sales positions before going on to serve as Managing Director of three Group businesses. He left AECI in 2011, returning in 2015 as a member of the then AECI Chemicals Executive. He was appointed to the AECI Executive Committee in 2018.
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DEAN MURRAY (54)
Executive
Dean is the Group Executive responsible for AECI Agri Health and AECI Chemicals.

He joined the Group as Managing Director of Chemiphos when Chemserve acquired that business in 2006 and went on to serve in a number of leadership roles in the Chemserve group.

Dean was appointed to the then AECI Chemicals Executive in 2013 and the AECI Executive Committee in 2018.
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CHERYL SINGH (46)
Group Company Secretary and General Counsel
Cheryl took up her position as Group Company Secretary and General Counsel in 2021. She is an admitted attorney and GIBS MBA alumna with over 15 years’ experience as a company secretary, including the legal, compliance and risk management disciplines.

Cheryl started her career at a leading law firm and went on to work at various listed and unlisted companies in a number of sectors. She is also a certified Ethics Practitioner with the Ethics Institute of Southern Africa.
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