Mary Oppenheimer Daughters (MODO) is the single-family office of Mary Oppenheimer and her Daughters.
Located in Johannesburg, London, and the Isle of Man, MODO stewards a portfolio of business investments and philanthropic programmes rooted in the family’s long-standing commitment to social progress and principled, inclusive values.
This website provides contact information and links to our investment activities and philanthropic undertakings.
INVESTMENTS
Mary Oppenheimer Daughters (MODO) is a patient, long-term, international investor with an intimate understanding of doing business in Africa and a commitment to responsible and sustainable development.
Our portfolio spans private equity, public markets, and alternative assets.
We partner with high-quality businesses and investment professionals whose values align with ours, supporting opportunities that create enduring value for future generations.
For more information, visit:
Stockdale Street UK Limited
Stockdale Street Pty Limited
Tana Africa Capital Limited
One Day Yes Limited
PHILANTHROPY
Our philanthropic work builds on the Oppenheimer Family’s longstanding commitment to social progress and enduring values, bringing hope and optimism to communities.
We support initiatives that have meaningful impact across education, women’s issues, economic empowerment and the arts especially within South Africa.
Our partners in philanthropy include:
The Oppenheimer Memorial Trust
The Brenthurst Library
MANAGEMENT
Mary Oppenheimer Daughters (MODO) is guided by a hands-on, multi-generational management approach. We combine strategic oversight with operational expertise, while ensuring that our business and philanthropic activities are thoughtfully aligned with our long-term vision and values.
EMMA CALLISTER
Emma is Chief Executive of Mary Oppenheimer Daughters (MODO), having worked for the family in various different management roles since 2012. Prior to joining the family office, Emma served as Company Secretary and Director for AngloGold Ashanti’s non-South African business interests, supporting complex corporate and regulatory environments, and as a Manager within the Maitland group advising and providing services to ultra-high net worth individuals.
THOMAS CLAIBORNE
Thomas is Chair of Mary Oppenheimer Daughters (MODO). After a long career within the family’s business interests, including the mining group Anglo American, he began working directly within the family office in 2002 where he served as Managing Director and later Chief Executive Officer.
He holds a degree in history from the University of Virginia.