Sinead Kaufman

Director/Board Member at SOUTH32 LIMITED

Net worth: 5 M $ as of 2026-05-30

Non-Energy Minerals

Consumer Services

Energy Minerals

Profile

Sinead Kaufman is currently Director at Diavik Diamond Mines (2012), Inc. Ms. Kaufman is also Independent Non-Executive Director at Deep Yellow Ltd. and South32 Ltd., both starting in 2026.
Former positions include Chief Executive Officer-Minerals at Rio Tinto Plc from 2021 to 2025, Chief Executive Officer at Rio Tinto Exploration Canada, Inc., Non-Executive Director at Energy Resources of Australia Ltd. from 2017 to 2018, Managing Director at Rio Tinto Coal Australia Pty Ltd., and Chief Executive-Minerals at Rio Tinto Ltd. Education includes undergraduate studies at the University of Birmingham and graduate studies at the University of Leicester.

Known holdings in public companies

Company	Date	Number of shares	Valuation	Valuation date
RIO TINTO LIMITED 0.01%	2026-02-04	37,436 ( 0.01% )	5 M $	2026-05-30

Sinead Kaufman active positions

Companies	Position	Start
SOUTH32 LIMITED	Director/Board Member	2026-03-31
DEEP YELLOW LIMITED	Director/Board Member	2026-04-30
Diavik Diamond Mines (2012), Inc. Diavik Diamond Mines (2012), Inc. Other Metals/MineralsNon-Energy Minerals Operates and explores diamond mines	Director/Board Member	-

All active positions of Sinead Kaufman

Former positions of Sinead Kaufman

Companies	Position	End
RIO TINTO PLC	Corporate Officer/Principal	2025-09-30
ENERGY RESOURCES OF AUSTRALIA LTD	Director/Board Member	2018-06-18
Rio Tinto Exploration Canada, Inc. Rio Tinto Exploration Canada, Inc. SteelNon-Energy Minerals Provides iron ore, copper, diamond and lithium mining services	Chief Executive Officer	-
RIO TINTO GROUP	Corporate Officer/Principal	-
Rio Tinto Coal Australia Pty Ltd. Rio Tinto Coal Australia Pty Ltd. CoalEnergy Minerals Engages in coal mining business	Chief Executive Officer	-

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Training of Sinead Kaufman

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Private companies

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Linked companies

Private companies	10
Rio Tinto Plc Rio Tinto Plc Other Metals/MineralsNon-Energy Minerals Explores and mines for mineral resources	Non-Energy Minerals
Energy Resources of Australia Ltd. Energy Resources of Australia Ltd. Other Metals/MineralsNon-Energy Minerals Engages in mining, processing and selling of uranium	Non-Energy Minerals
Deep Yellow Ltd. Deep Yellow Ltd. Other Metals/MineralsNon-Energy Minerals Engages in the acquisition, exploration, evaluation and development of uranium properties	Non-Energy Minerals
Rio Tinto Ltd. Rio Tinto Ltd. Other Metals/MineralsNon-Energy Minerals Explores and mines for mineral resources	Non-Energy Minerals
University of Birmingham University of Birmingham Other Consumer ServicesConsumer Services Functions as a College/University	Consumer Services
Diavik Diamond Mines (2012), Inc. Diavik Diamond Mines (2012), Inc. Other Metals/MineralsNon-Energy Minerals Operates and explores diamond mines	Non-Energy Minerals
University of Leicester University of Leicester Other Consumer ServicesConsumer Services Functions as a College/University	Consumer Services
Rio Tinto Coal Australia Pty Ltd. Rio Tinto Coal Australia Pty Ltd. CoalEnergy Minerals Engages in coal mining business	Energy Minerals
Rio Tinto Exploration Canada, Inc. Rio Tinto Exploration Canada, Inc. SteelNon-Energy Minerals Provides iron ore, copper, diamond and lithium mining services	Non-Energy Minerals
South32 Ltd. South32 Ltd. Other Metals/MineralsNon-Energy Minerals Provides alumina, aluminum, copper, zinc, lead and silver exploration services	Non-Energy Minerals