New CFO and Executive Changes

Release






Meridian Energy Limited (ARBN 151 800 396) A company incorporated in New Zealand
Level 2, 98 Customhouse Quay, Wellington 6011

meridianenergy.co.nz
Stock Exchange Listings NZX (MEL) ASX (MEZ)
New CFO and Executive Changes

28 April 2025


Meridian Energy has appointed Mandy Simpson as its new Chief Financial Officer, effective
1 September 2025.

Mandy brings a depth of executive experience across finance, operations and technology, both in the
UK and in New Zealand. This includes CFO roles for the State Services Commission, IT consultancy
Fronde Systems and management and accounting roles at Audit New Zealand and Deloitte. She is a
Fellow of the Institute of Chartered Accountants in England and Wales and holds a Master of Law
with Honours from Cambridge University.

Mandy has deep capital markets expertise, including four years as Chief Operating Officer at NZX
and operations and investigative roles at the London Stock Exchange.

Most recently Mandy has been General Manager, Strategy, Delivery and Innovation at Z Energy and
has been part of that company’s Leadership Team since 2019.

Meridian’s incoming CEO Mike Roan says he is delighted to be welcoming someone of Mandy’s
calibre to the company’s Executive Team.

“Mandy has proven leadership capability and a great mix of strong finance skills and broader
operational and technology experience. She also has a strong record delivering organisation change
and technology transformation.”

As CFO, Mandy will have responsibility for Finance, Risk, Treasury, Investor Relations and
Procurement. Given her 1 September start date and Mike Roan’s transition to CEO, Meridian Group
Financial Controller Helen Peters has been appointed Acting CFO.

In other Executive changes, the company has created a new role of General Manager, Strategy and
Portfolio, elevating Strategy to the Executive team and combining it with the Financial Trading and
Portfolio Management functions of the Wholesale team.

The role of General Manager, Wholesale will be disestablished, and Chris Ewers will initially act in the
role of General Manager, Strategy and Portfolio. Once recruitment for that role is completed, Chris will
take up a new position as Electricity Security Manager, reporting to General Manager, Generation
Tania Palmer. The Wholesale Operations function of the Wholesale team also becomes part of the
Generation team.

Mike Roan says these changes will enhance collaboration at a time when it’s vital that we have teams
working closely together to create long-term value and opportunity.

meridianenergy.co.nz
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“Our industry is going through reasonably substantial change, and what I wanted was one of our most
capable people focused in on security of supply as we navigate the next few years. Chris has steered
us through some turbulent times in the wholesale electricity market and he will bring an enormous
amount of industry experience and expertise to his new role.”


ENDS

Neal Barclay
Chief Executive
Meridian Energy Limited


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Investor Relations Manager
021 246 4772
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Philip Clark
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0278 385 710