Contact us on 07 348 3599 or by email

Our Team


Glenn Hawkins

BMS(Hons) MMS CA | Ngāti Whakaue, Ngāti Maniapoto

Before establishing this accounting and consulting practice in 2005, Glenn was Finance Manager, then General Manager, of the New Zealand Māori Arts & Crafts Institute (Te Puia). As a Chartered Accountant, he has a varied background that includes roles as management consultant with Ernst & Young and management accountant for a manufacturer and exporter. Glenn has extensive experience with Māori post-settlement governance entities (PSGEs), Māori incorporations, Māori land trusts, service providers, marae and non-profit organisations. Glenn is passionate about Māori business development and has helped numerous Māori commercial organisations in industries as diverse as tourism, agribusiness, fisheries, property, geothermal, forestry, education, health and aquaculture. He is also the Te Puni Kōkiri accredited business mentor for the Rotorua region. Glenn has governance roles with a range of client companies and Trusts and has been a fully qualified Chartered Accountant for 22 years.


Mere George

BMS CA | Ngāti Whare, Ngāti Manawa, Tūwharetoa, Ngāti Porou

Mere became a qualified Chartered Accountant in 2005, while working at Deloitte as an auditor in Risk and Assurance from graduation until early 2009.  Mere has worked with commercial entities across a broad range of industries, including Māori businesses, public sector entities, telecommunications and insurance. In 2009, Mere returned home to Rotorua working with Hulton Patchell Ltd, before joining GHA in June 2012. Mere enjoys working closely with iwi groups, Māori trusts, marae and incorporations. Mere is a conscientious and honest professional committed and passionate about Māori business and Māori economic development.

Glenn Cash
General Manager

DipLaw | Te Whakatōhea, Ngāti Porou, Ngāi Tuhoe

Glenn has experience working in small, medium and large businesses including 11 years with Telecom NZ as account manager to some of NZ’s largest companies and holding senior management roles in marketing.  She has worked as a Partnerships Ranger with the Department of Conservation and was GM of a specialist consultancy firm and PTE working in the fields of resource management, environmental protection, health and safety at work and hazardous substances.  From 2009 to 2014 she was General Manager of CNI Iwi Holdings Ltd, working closely with the 8 central north island Iwi. Glenn brings a depth of knowledge and skill from a successful corporate career and her unique experience supporting post-settlement Iwi governance, particularly in regards to Trust law and collaborative investments.  She is passionate about water and land conservation and engaging rangatahi to build a prosperous future.

Oksana Kahlenberg
Accounting Manager


Oksana was born and raised in Riga, Latvia, where she completed her degree and worked as an accountant for various commercial entities.   She moved to New Zealand in 2008, and has since settled in Rotorua. Before joining the GHA team in August 2013, Oksana worked for a Chartered Accounting firm in Rotorua and Whakatane. She has several years of experience working with a variety of clients across different industries, with particular interest in education sector, including early childhood education.

Donelle Leef

Donelle Leef
Accounting Assistant Manager

NZDipBus | Rongomaiwahine

Born and raised in Rotorua, Donelle worked within the audit division of a local accounting firm for four years before leaving for Sydney in 2012.  After realising her heart was in Rotorua, she returned home at the end of 2013 and joined the GHA team as an Accountant in May 2014.  Donelle has completed all academic and practical requirements for full membership of the New Zealand Institute of Chartered Accountants as an Accounting Technician, and intends to continue studying towards becoming a Chartered Accountant. She is keen to build positive working relationships and to contribute to the future success of GHA clients.

Isabelle Yee
Accounting Assistant Manager


Isabelle joined the GHA team as an accountant in May 2017.  Isabelle is originally from China and moved to New Zealand in 2003.  She completed her Bachelor of Commerce and Administration in 2006 at Victoria University majoring in accounting. Before joining the GHA team, she worked as a tax accountant at several Chartered Accountant firms in Tauranga and Rotorua. Isabelle has worked with clients in various industries, ranging from small businesses to large farms. Isabelle understands the importance of maintaining a positive client relationship and is committed with helping GHA clients to succeed.

Stacey Winiata

Stacey Winiata

BBA | Ngāti Awa, Ngāti Patumoana, Whakatōhea

Stacey joined GHA in August 2015 after graduating from the University of Waikato in 2014 with a Bachelor in Business Analysis, majoring in Accounting.  Stacey is passionate about accounting and helping clients to reach their objectives.  Her quietly conscientious and hard-working nature is attested to by her supportive whānau and already evident in her work at GHA.  GHA are pleased to be supporting Stacey on her pathway to becoming a Chartered Accountant.

Matiria Temara

Matiria Temara

NZDipBus BBA | Tūhoe, Ngā Puhi

Matiria is of Tuhoe and Ngāpuhi decent and a graduate of kōhanga reo and kura kaupapa Māori. In 2013, she graduated from the University of Waikato where she completed a Bachelor of Business Analysis majoring in Accounting.  Matiria sees her role at GHA as an opportunity to develop her skills and experience further in a professional Māori environment. GHA are pleased to be supporting Matiria on her pathway to becoming a Chartered Accountant.


Zara Morrison

BCA/BSC CA | Te Arawa, Ngāti Whakaue, Ngāti Tūwharetoa, Ngāti Turumakina

Zara grew up in Rotorua and became a qualified Chartered Accountant in 2011, while working as a tax consultant at Ernst & Young Wellington.  She then spent almost 5 years living in Germany and recently returned home with her family to join GHA in September 2016.  Zara has previous experience in tax structuring advice for Iwi PSGE’s and has a passion for helping Maori businesses succeed.  Zara is dedicated to giving back to her iwi and developing positive relationships with GHA’s clients.

Tamaku Pau’u

BMS | Tapuika, Ngā Puhi

Tamaku was born and raised in Te Puke and is of Te Arawa and Ngā Puhi decent. She graduated with a Bachelor of Management Studies degree from the University of Waikato majoring in Accounting. Prior to working with GHA she worked at other accounting firms and worked for her iwi. A passion to grow Maori business is what led to Tamaku to join GHA. GHA is supporting Tamaku on her pathway to becoming a Chartered Accountant.

Rebekah Coker

Rebekah was born and raised in Rotorua. Prior to joining the accounting team at GHA, Rebekah started out as an office administrator for a small local Chartered Accountancy firm in 2012 which allowed her to grasp basic practical knowledge of accounting whilst studying part-time at Toi Ohomai Institute of Technology also learning the theoretical knowledge of Accounting. This helped her to confidently transition into more of an accounting-based role. Rebekah is very passionate about embracing the importance of developing and maintaining honest relationships with the clients and colleagues of GHA and respects and acknowledges the importance of Te Reo me ona Tikanga.

Keri Te Tamaki

Keri Te Tamaki

Ngāti Tura, Ngāti Te Ngakau

Originally on reception, Keri has re-joined the accounting team after spending two years abroad. Keri was born and raised in Rotorua. She previously spent six years in Hamilton working in both the motor industry and the training of horses in dressage but has decided to return home to pursue a career in Accounting. Keri studied Mathematics at the University of Waikato and is currently studying towards her Diploma in Accounting. Keri is excited to be home in Rotorua and building strong relationships within the team and client base.

Trish Tuisea
Graduate Accountant

NZDipBus |  Ngāti Porou, Ngāti Hamoa

Originally from Wellington, Trish lived in Australia for five years and Gisborne for seven years prior to moving to Rotorua in 2018. With a strong background in administration and accounts, she was inspired to obtain her NZ Diploma in Business and Open Polytech Diploma in Accounting with the support of her workplace in Gisborne at the time. She later continued studying toward a Bachelor in Business majoring in Accounting, set for completion in late 2018. Trish believes working at GHA will not only deepen her knowledge of tikanga Maori and te reo, but also further motivate her to become a Chartered Accountant with CAANZ in the near future.

Te Ana Stephen
Graduate Accountant

BCom |  Ngāti Hine, Ngā Puhi

Born and raised in Wellington, Te Ana recently graduated from Victoria University with a Bachelor of Commerce, majoring in Accounting and Commercial Law. She is passionate about te ao Māori and being able to transmit that passion to her tamariki. It was her passion for Māori and learning te reo Māori that brought her to Rotorua and to GHA. Te Ana believes that immersing herself in a cultural hub like Rotorua will help further her te reo Māori journey and sees GHA as an opportunity to develop her accounting knowledge and skills in a professional Māori environment. She hopes to one day complete her chartered accountancy with the support of GHA, help to develop culturally responsive financial systems for Māori and use her skill and knowledge to give back to Māori.


Matiu Taurau
Consulting Manager

BCom CA | Rangitāne, Ngā Puhi, Ngāi Tahu, Ngāti Kahungunu

Matiu joined the GHA team in November 2015 as a management consultant bringing with him a wealth of international and local experience in business. Matiu has been a Chartered Accountant since 2008, and most recently worked for listed company Comvita as their accountant. Previously, Matiu worked as an auditor with Audit New Zealand before heading to the UK where he worked with Fortune 500 company General Electric. Matiu’s knowledge and experience spans a number of industries and sectors including agriculture, manufacturing, healthcare, retail and Māori authorities. Matiu is pleased to be lending his considerable talent, skills and energy to helping our clients succeed.

Kateriina Selwyn
Management Consultant and Maori Sector Manager for CA ANZ

BMS | Te Arawa, Ngā Puhi, Tūhoe

Kateriina has recently completed her Bachelor of Management Studies (BMS) degree, majoring in Marketing at the University of Waikato.  In her final year at Waikato, Kateriina worked as a Marketing Intern at Ebbett Volkswagen Hamilton and was also selected as one of the recipients of the Tāwera Scholarship.  Kateriina is pleased that securing mahi in Rotorua has allowed her to move back to her home in Rotoiti. Kateriina is committed to Māori business and economic development.

Brook Grant
Management Consultant

BSc (Chemistry), PGDipGrad (Finance) | Ngāti Whakaue, Te Arawa

Brook joined the GHA team in April 2017, bringing over 10 years’ experience in banking and financial advisory services, having worked in London, Dublin and here in New Zealand. Brook has held senior roles in Bancorp Treasury Ltd and BNZ and has professional experience in SIPO development, fixed income investment, treasury risk management strategies, financial markets trading, and financial and econometric modelling. Brook is passionate about elevating the use of te reo Māori in the commercial world, and has become the first te reo Māori financial commentator on television, delivering a fortnightly wrap of topical financial issues entirely in te reo Māori, on Te Karere. Brook is a Trustee of Tuia Charitable Trust, which is focussed on empowering Māori rangatahi.

Kirsten Rei
Management Consultant

LLB/BA | Te Māhurehure, Ngāti Rangi, Ngāti Whakaue

Kirsten has broad Māori and government sector experience, having led a number of high profile leadership roles for both.  Born and raised in Rotorua, Kirsten initially trained as a lawyer before heading in to management roles at home in Rotorua and Wellington.  Kirsten joined the GHA team in March 2018, bringing nearly twenty years’ experience in senior management, specialising in public policy and dealing at the interface between government, communities and the various sectors that comprise the wider ecosystem of Māori development.   Kirsten is committed to supporting GHA’s clients to thrive.

Lucy Inder
Business Analyst


Lucy joined GHA as a Business Analyst in the Consulting team in January 2018 after returning home from her OE where she spent 18 months travelling the world. She completed a Bachelor of Commerce and Administration with Honours (First Class) at Victoria University of Wellington in 2012 before starting on Westpac’s Graduate Program in Auckland spending two years rotating around different departments giving her an end-to-end understanding of banking and a unique breadth of skills. She continued at Westpac as an Analyst in Treasury Finance for almost 2 years where her focus was on Liquidity and Funding reporting and analysis enabling her to develop her financial modelling and analysis skills. She has also passed Level 1 and 2 CFA exams. Lucy is excited to be a part of the GHA Consulting team where her role gives her the opportunity to help clients directly and be part of the interesting and growing Māori business sector.

Hoete Mitai-Ngatai
Graduate Analyst

NZDipBus | Te Arawa, Tūhoe, Te Whakatōhea

Hoete was born and raised in Rotorua and has worked for many years at his family’s tourism venture Mitai Māori Village in Rotorua. Hoete will look to finish his final paper in semester two of 2018 to complete the Bachelor of Applied Management with a major in Accounting. Hoete completed a three month internship with Deloitte Rotorua in February 2018 and is very passionate about Te Reo Maori and Kapa haka. He is pleased to be working in the professional services industry to help Māori collectives become successful and he is determined to complete his Chartered Accountancy in the near future with the support of GHA.

Rachel Hoffman
Board Secretary

Ngāti Pikiao

Rachel joined the GHA team in September 2017 as personal assistant to Glenn and Mere. Born and raised in Rotorua, Rachel brings a range of skills and experience to the position. Prior to working at GHA, Rachel was the receptionist and administrator at Iles Casey Chartered Accountants and before that worked as a personal assistant for a local real estate agent. With a natural affinity for people and management coupled with an eye for detail and efficiency, Rachel will enjoy the challenges that a multifaceted role brings. Rachel looks forward to growing her Te Reo Māori and enhancing her knowledge of kaupapa Māori.

Melissa Katting
Board Secretary

DipHR, NZDipBus|  Te Arawa – Ngāti Mākino, Ngāti Whakaue, Tūhourangi – Ngāti Wāhiao

Melissa has been an integral part of the GHA team since joining in 2014. After an exciting start in Real Estate, she decided to take her career in a new direction and enter into the Māori business sector. Melissa has a passion for helping people and utilises her extensive organisational skills to support the partners of the firm. She is an innovative problem solver with strong interpersonal skills. Outside of work she is a dedicated mother and student. Melissa is excited for the future and hopes to continue to contribute to Māori and the Māori business sector. 

Rikki-Lee Naea
Personal Assistant to the Partners

DipHosp | Ngāpuhi

Rikki-Lee joined the GHA team in July 2018. Rikki-Lee grew up in Queenstown and completed her International Diploma in Hospitality Management and Tourism before moving to Perth, Australia where she worked as an Executive Assistant at Chartered Accountants, KordaMentha. Rikki-Lee moved to Rotorua to be closer to her whanau and brings international experience to GHA.  She has an interest in the Māori Business Sector and continues to enhance her knowledge of tikanga and te reo Māori. 

Wendy Schultz
Personal Assistant to the Accounting Manager

Wendy and her husband moved from Auckland to Rotorua in 2015 after many years of taking holidays here.  She has worked in a number of different industries including Legal, Manufacturing, Property Management and the Health Sector in the UK.  Wendy is looking forward to learning about the Māori language and customs, and contributing to the GHA team.

Kere Mitai
Senior Administrator

NZDipBus | Te Whakatōhea, Ngāti Pikiao, Tūhourangi – Ngāti Wāhiao

Born and raised in Rotorua, Kere’s family ties stretch far and wide around the city. Kere attended both Kohanga Reo and Kura Kaupapa Māori her entire schooling years making her fluent in Te Reo Māori. She then went to study and gained her NZ Diploma in Business in 2012. Since studying, Kere has travelled the world, gaining different experiences whilst working in a number of various roles. Joining GHA in July 2017, Kere’s previous experience in Management, Accounting and Administration is a great pillar to guide her in her new role as the Senior Administrator.

Jasmine Manley
Office Administrator

NZDipMāori | Ngāti Whakaue, Ngāti Takihiku, Maniapoto (Ngāti Matakore)

Born and raised in Rotorua, Jasmine is of Te Arawa, Raukawa and Maniapoto decent. She has a background in Administration with a passion for Māori development and Te Reo Rangatira. She is determined to complete her bachelor’s degree in the near future and give back to her iwi/hāpū. Jasmine looks forward to helping Māori enterprises and organisations succeed and develop in this front line role.

Nero Panapa
Share Registry Administrator

Tūhourangi, Ngāti Pikiahu Waewae, Ngāti Pūkeko, Ngāti Whātua

Born and raised in Rotorua hailing from the small village of Te Whakarewarewa.  Nero’s journey in tribal registers began in 2010 where he was asked to audit the state of the Te Pūmautanga o Te Arawa beneficiary register.  What started as a two-month contract quickly turned into a full-time position maintaining the beneficiary register for the post settlement entity.  In 2014 Nero moved to Deloitte Rotorua as the Share Registry Assistant focussing on shareholder grants, payments and successions.  Here he also became a cultural liaison for the other Deloitte offices in Auckland and Wellington where specialised skills were required for some of the total immersion clients.  Nero joined the team at GHA in February 2018 and is the Share Registry Administrator.  Nero realises that the key to success is to share knowledge and empower our people by making sound decisions based on a blend of traditional and contemporary mindset. Nero encourages Te Reo across the office and speaks fluently.

Jason Mika

Dr Jason Mika

BMS(Hons) MPP PhD | Tūhoe, Ngāti Awa, Whakatōhea, Ngāti Kahungunu

Jason has been a consultant for GHA since the company was formed. Jason specialises in Māori enterprise development and Māori organisational development. Jason’s strengths are in developing strategies, plans and policies to help Māori enterprises and Māori organisations succeed. He was raised in Rotorua and has completed consultancy assignments for Māori organisations locally and across the motu. Jason is a senior lecturer in the School of Management, Massey University in Palmerston North and co-director of Te Au Rangahau, Māori Business & Leadership Research Centre. Jason provides consulting services as an independent management and associate of GHA.

Brigette Arnold

BA(Hons) PGDipGrad (Economics)

Brigette has worked in the financial industry for over 15 years, across markets in the UK, Europe, Asia, North America, Middle East and Australasia. Brigette firmly believes in strong, face-to-face communication to strengthen relationships and identify the present and future needs of investors. Brigette has worked for 10 years at UK-based MVision Private Equity Advisers, managing private equity fund-raisings for global clients and as the lead relationship manager for Asian, Australian and New Zealand institutional investors. Since 2011, she has filled senior roles at Fisher Funds and Knox Investment Partners and is a former council member of the New Zealand Venture Capital Association. 

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