Wednesday, September 16, 2026
MiningNewsTerminal
Wednesday, September 16, 2026 Admin

IVN.TO ·

Ivanhoe Mines and Kamoa Copper strengthen Executive Leadership Teams with key appointments ■ Ivanhoe appoints President Marna Cloete as President & Chief Executive Officer ■ Annebel Oosthuizen appointed as Kamoa Copper’s new

Management Changes

February 24, 2025

Ivanhoe Mines and Kamoa Copper strengthen Executive

Leadership Teams with key appointments

Ivanhoe appoints President Marna Cloete as

President & Chief Executive Officer

Annebel Oosthuizen appointed as Kamoa Copper’s new

Managing Director; Tom van den Berg joins Kamoa as Senior

Executive, Operations

HOLLYWOOD, FLORIDA – Ivanhoe Mines (TSX: IVN; OTCQX: IVPAF) Executive Co-Chair

Robert Friedland announces today at the BMO Global Metals, Mining & Critical Minerals

Conference key appointments to strengthen the Executive Leadership Teams of

Ivanhoe Mines and the Kamoa-Kakula Copper Complex in the Democratic Republic of

the Congo (DRC).

Marna Cloete, currently President of Ivanhoe Mines, has been appointed as President &

Chief Executive Officer, reflecting nearly two decades of experience in building the

Company to become a major, diversified metals producer.

At the Kamoa Copper Joint Venture, Annebel Oosthuizen has been appointed as

Managing Director, replacing Riaan Vermeulen. Ms. Oosthuizen previously served as

Chief Executive, Commercial and has been an instrumental executive in the joint

venture for 10 years.

Tom van den Berg has been appointed as Senior Executive, Operations for Kamoa-

Kakula bringing with him decades of experience in mining development and operations,

previously with Sibanye-Stillwater.

Ivanhoe Mines Executive Co-Chair, Robert Friedland commented:

"I would like to offer my profound congratulations to Marna Cloete on her appointment

as President & Chief Executive Officer of Ivanhoe Mines.

"Marna’s success is the best example of our greatest asset – our culture. She has

driven this company forward tirelessly and with great tenacity, while building around

her a world-class team of decision-makers who are never wrapped up in bureaucracy.

2

She has created a mining company with a heart and compassion – building sustainable

operations driving positive, lasting impact in the communities in which we operate.

"It has been a pleasure for me to have a front-row seat over 19 years and witness her

growth and evolution from joining the company in a finance position, to becoming our

Chief Financial Officer for over ten years and more recently an exceptional President of

Ivanhoe Mines. Today she is deservingly recognized as one of the world’s foremost

mining business leaders.

“As we move forward, Marna will continue to drive Ivanhoe Mines into our next era of

extraordinary growth. The best is yet to come!"

Ivanhoe appoints President Marna Cloete as President & Chief Executive

Officer, effective immediately

Ms. Cloete joined Ivanhoe Mines in 2006 with a

background as a Chartered Accountant (CA) and a

Master’s Degree in Taxation. She has played a vital

role in the company’s evolution, serving as Chief

Financial Officer from 2009 to 2020. She has been

the President of Ivanhoe Mines since April 2020.

During this time, Ms. Cloete’s financial acumen,

visionary leadership and approach to stakeholder

relations laid the groundwork for Ivanhoe Mines’

sustainable growth and global success.

Marna has been instrumental in driving some of the

mining industry’s most significant achievements.

Under her leadership, Ivanhoe Mines successfully

developed and launched production at the Kamoa-

Kakula Copper Complex in the DRC, today one of

the world’s fastest growing, highest-grade and

greenest major copper mines. She also guided the

rehabilitation and reopening of the Kipushi Mine,

renowned for its ultra-high-grade zinc, copper, germanium and silver deposit. In

addition, Ms. Cloete continues to oversee the development of the Platreef Project in

South Africa, one of the world's largest undeveloped precious metals projects, which

includes platinum, palladium, rhodium, nickel, gold and copper.

A champion of education and local empowerment, Marna also spearheaded the

establishment of the Kamoa Centre of Excellence in October 2023. This higher-

education facility, launched in collaboration with the DRC Government and President

Félix Tshisekedi, is dedicated to nurturing the next generation of mining leaders in

Africa.

President & Chief Executive Officer, Marna Cloete, commented:

“It has been the journey of a lifetime being part of Ivanhoe Mines’ organic growth from a

junior exploration company to one of the world’s most successful builders of mining

projects and the largest producers of critical metals.

Marna Cloete, President & Chief

Executive Officer, Ivanhoe Mines

3

“When I joined Ivanhoe, there were fewer than one hundred employees in the entire

organization, and I look today with enormous pride at a company with a full-time

complement of over 7,500 dedicated people across our operations, and over 30,000

including contractors, and many thousands of lives more positively impacted by our

activities.

“This company, more than anything, is built on exceptional individuals with shared

values and a commitment to building a mining company with a fresh approach –

including the hardware of exploration, mine building and operations, but also the

software – our approach to nurturing talent, improving our communities and fostering

positive and lasting relationships with our host governments.

“I am particularly proud at our company’s track record in identifying, developing and

retaining exceptional talent – and the appointments we have announced today are

evidence of that – including the richly deserved promotion of Annebel Oosthuizen to

Managing Director of our flagship Kamoa-Kakula Copper Complex.”

Ivanhoe Mines President and Chief Executive Officer, Marna Cloete (left), with

Founder and Executive Co-Chairman Robert Friedland during a visit to Kamoa-

Kakula

4

Kamoa Copper makes key appointments to further strengthen the

management team

Annebel Oosthuizen will succeed Riaan Vermeulen as

Managing Director at the Kamoa Copper Joint Venture. Ms.

Oosthuizen was appointed as the Chief Executive,

Commercial for Kamoa Copper in September 2022. Prior to

this, she joined the Kamoa-Kakula project in 2015 and served

in progressively senior roles within the finance department,

including as Executive, Finance.

Ms. Oosthuizen has 18 years of financial management

experience in the mining sector across Africa. She was

appointed to Kamoa Copper’s Executive Committee in 2020

and has served a critical role in ensuring a seamless and

successful transition of Kamoa-Kakula from development

project into an operating mining complex, building from

scratch a world-class team and developing capabilities to

manage an operation with annual sales of over $3 billion,

while also overseeing complex commercial agreements and

logistical flows across the African continent. Ms. Oosthuizen has diligently managed

approximately $6 billion in capital investment to date at Kamoa-Kakula, including the

self-financing of the Phase 2 and Phase 3 expansions, as well as the recently completed

smelter.

(L-R) Dodo Mbay Executive, Concentrators, Kamoa Copper; Annebel Oosthuizen,

Managing Director, Kamoa Copper; and Riaan Vermeulen, outgoing Managing

Director, Kamoa Copper, holding first concentrate from the Phase 3 concentrator

in June 2024.

Annebel Oosthuizen

Managing Director

Kamoa Copper SA

5

Ivanhoe Mines would like to extend our gratitude to Riaan Vermeulen for his

contributions in the rapid growth of Kamoa-Kakula and wish him well in his future

endeavors. Mr. Vermeulen joined the Kamoa Copper Joint Venture as Managing Director

in June 2022, and oversaw the ahead-of-schedule delivery of Kamoa-Kakula’s Phase 1

and 2 debottlenecking program, as well as the ahead-of-schedule delivery of the Phase

3 expansion, which produced first concentrate in June 2024. Mr. Vermeulen also has

been instrumental in the long-term planning for Kamoa-Kakula’s Phase 4 expansion,

and the new life-of-mine integrated development plan for the complex, which is

expected to be released in Q2 2025.

Tom van den Berg will join Kamoa Copper as Senior

Executive, Operations, with 36 years of mining and

development experience across South Africa in numerous

operational leadership and management roles. Most recently

Senior Vice President, Mining Strategy and Technology, for

Sibanye Stillwater Group Technical; also as an Executive of

Safety, Mining Technical with Harmony Gold; and Head of the

Zero Harm Initiative for Anglo American Platinum. This was

preceded by 10 years as an Operational Mining General

Manager on large complex mining operations for Anglo

American.

Mr. van den Berg brings extensive underground and open-pit

mining expertise and has experience developing strategic

long-term operating partnerships and leading award-winning

community and stakeholder engagement programs.

Mr. van den Berg holds a Master’s degree in Business Leadership and a Bachelor’s

degree in Mining Engineering . He also is a Fellow at the Southern African Institute of

Mining and Metallurgy.

Ms. Oosthuizen and Mr. van den Berg will serve as Ivanhoe Mines ’ senior management

designees in the Kamoa-Kakula joint-venture.

Tom van den Berg

Senior Executive, Operations

Kamoa Copper

6

Aerial view of the recently completed direct-to-blister copper smelter. The

smelter has a nameplate capacity of 500,000 tonnes per annum of approximately

99%-pure blister copper.

A key milestone was recently achieved at the on-site smelter, as concentrate

from Kamoa-Kakula has started to be stockpiled into the smelter concentrate

storage shed.

7

160 slag ladles being overturned using a stack-handler in preparation for

transport to the slag processing plant.

Aerial view of the main smelter building with gas handling plant and substation

in the foreground. Construction of the smelter complex is now complete.

8

About Ivanhoe Mines

Ivanhoe Mines is a Canadian mining company focused on advancing its three principal

projects in Southern Africa; the expansion of the Kamoa-Kakula Copper Complex in the

DRC, the ramp-up of the ultra-high-grade Kipushi zinc-copper-germanium-silver mine,

also in the DRC; and, the phased development of the tier-one Platreef palladium-nickel-

platinum-rhodium-copper-gold project in South Africa.

Ivanhoe Mines is also exploring across its highly prospective, 60-100% owned

exploration licences in the Western Forelands, covering an area over 5 times larger than

the adjacent Kamoa-Kakula Copper Complex. Ivanhoe is exploring for new sedimentary

copper discoveries, as well as expanding and further defining its high-grade Makoko,

Kiala, and Kitoko copper discoveries as the company’s next major development

projects.

About Kamoa Copper

The Kamoa-Kakula Mining Complex is operated by Kamoa Copper, a joint venture

between Ivanhoe Mines (39.6%), Zijin Mining Group (39.6%), Crystal River Global

Limited (0.8%) and the DRC government (20%).

The Kamoa-Kakula Copper Complex is one of the highest-grade and fastest growing

major copper mining operations globally. Copper concentrates were first produced in

May 2021 and, through on-going Phase 2 and Phase 3 expansions, Kamoa-Kakula is

positioned to become one of the world's largest copper producing operations, with 2025

production guidance set at between 520,000 to 580,000 tonnes of copper in concentrate.

The Kamoa-Kakula Copper Complex is powered by clean, renewable hydro-generated

electricity and is among one of the world’s lowest greenhouse gas emitters per tonne of

copper metal produced on a Scope 1 and 2 basis.

Follow Robert Friedland (@robert_ivanhoe) and Ivanhoe Mines (@IvanhoeMines_) on X.

Information contact

Investors

Vancouver: Matthew Keevil +1.604.558.1034

London: Tommy Horton +44 7866 913 207

Media

Vancouver: Tanya Todd +1.604.331.9834

Website www.ivanhoemines.com