Summerset has an experienced Board with a diverse range of skills and experience.  The Board is responsible for supervising and directing the management of the company, guiding the strategic direction of Summerset and ensuring strong corporate governance.


Mark VerbiestDr Marie Bismark - Stephen BullVenasio-Lorenzo CrawleyGráinne TrouteAnne Urlwin  - Dr Andrew Wong

Mark Verbiest

Chair, Independent | LLB CFInstD

Mark is Chair of the Board.

Mark is a lawyer by training, having spent many years in private practice as partner of a large national law firm. He subsequently joined the senior executive team at Telecom New Zealand as Group General Counsel, also having executive responsibility for other corporate groups and two business units.

He is currently the Chair of listed companies Meridian Energy and Freightways, as well as a director of ANZ Bank.

Mark has previously been Chair of Spark, Transpower NZ, Willis Bond Capital and a director of a number of other companies and entities, including the inaugural board of the Financial Markets Authority and the advisory board to NZ Treasury.

Mark has been Chair of Summerset since July 2021.

Dr Marie Bismark

Independent | MBChB, LLB, MBHL, MPH, MD, MPsych, FAICD, FAFPHM

Marie is Chair of Summerset’s Clinical Governance Committee. She holds degrees in law, medicine, bioethics and public health, and has completed a Harkness Fellowship in Healthcare Policy at Harvard University. 

Marie works as a psychiatry registrar with Melbourne Health, and as a Professor at Melbourne University. Her research focuses on patients' rights, quality of care, and medical regulation.

Marie is an experienced company director, serving on the boards of GMHBA Health Insurance, The Royal Women's Hospital in Melbourne, and on the Veterans' Health Advisory Panel. 

Marie has been a director of Summerset since 2013.

Stephen Bull

Independent | BCom, BPsych (Hons), MAICD

Stephen is the Chair of Summerset's Development and Construction Committee. He has over 25 years’ experience in real estate, community creation and finance roles. He has held executive roles at Westfield, AMP and Stockland.

Stephen finished executive work in 2018 and for the last five years of his executive career was a Group Executive at Stockland and CEO of their retirement village business. Prior to his real estate career in Australia, Stephen spent several years working in investment banking in London.

Stephen holds a Bachelor of Commerce and a Bachelor of Psychology (Honours) and is a member of Chartered Accountants (Australia and New Zealand). In addition, he is a Member of the Australian Institute of Company Directors (MAICD).

He is currently a non-executive director of Bridge Housing Ltd and sits on the investment committees for the MaxCap Industrial Opportunities Fund and the Wingate Direct Property business. He is also a member of the advisory board for the Moits Group in Australia.

Stephen has been a director of Summerset since 2022.

Venasio-Lorenzo Crawley

Independent | MBA, BA

Venasio-Lorenzo is the Chair of the AUT Business School Advisory Board. He has also recently completed a term as a Future Director for The Warehouse Group.

Venasio-Lorenzo recently completed his executive career as the Chief Customer Officer with the successful business turnaround and transformation of Contact Energy’s Retail, LPG, Broadband and Commercial and Industrial businesses.

Venasio-Lorenzo’s previous directorships and trustee positions include the Electricity Retailers’ Association, the New Zealand Gas Complaints Commission (now Utilities Disputes), Loyalty New Zealand and Workbase.

He has held senior executive positions at ASB Group and at IAG in both New Zealand and the United Kingdom, and has worked across a wide variety of areas including strategy, finance, IT, pricing, data analytics, digital technology, culture and branding.

Venasio-Lorenzo has been a director of Summerset since 2020.

Gráinne Troute

Independent | GradDipBusStuds, CMinstD

Gráinne is Chair of Summerset’s People and Culture Committee. She is a Chartered Member of the Institute of Directors and is also Chair of Tourism Industry Aotearoa and a director of Tourism Holdings and Investore Property. 

Gráinne is a professional director with many years’ experience in senior executive roles. She was General Manager, Corporate Services at SKYCITY Entertainment Group and Managing Director of McDonald’s Restaurants (NZ). She also held senior management roles with Coopers and Lybrand (now PwC) and HR Consultancy Right Management.

Gráinne has vast expertise in operating customer-focused businesses in highly competitive sectors. She has also spent many years as a trustee and Chair in the not-for-profit sector, including having been the Chair of Ronald McDonald House Charities New Zealand for five years. 

Gráinne has been a director of Summerset since 2016.

Anne Urlwin

Independent | BCom, FCA, CFInstD, MAICD, ACIS, FNZIM

Anne is the Chair of Summerset’s Audit Committee. She is a professional director with experience in a diverse range of sectors including construction, property development, health, infrastructure, telecommunications, regulation and financial services. 

She is a director of Precinct Properties New Zealand, Ventia Group Services and Vector. Her other directorships include City Rail Link and Queenstown Airport Corporation. 

Anne is a former director of Tilt Renewables, Southern Response Earthquake Services and Chorus, and a former Chair of national commercial construction group Naylor Love Enterprises and of the New Zealand Blood Service.

Anne is a Chartered Accountant with experience in senior finance management roles in addition to her governance roles.  

Anne has been a director of Summerset since 2014. 

Dr Andrew Wong

Independent | BHB, MBChB, MPH

Andrew is the Managing Director of Mercy Ascot Hospitals and HealthCare Holdings, having held these positions since 2009. 

He holds a medical degree and has previously practised as a public health medicine specialist.

Andrew is also a director of a number of medical organisations. These cover a diverse range of areas, such as surgical hospitals, day surgeries, diagnostic radiology and cancer care.

Andrew has been a director of Summerset since 2017.