Our leadership team

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The Summerset leadership team works closely with the Board of Directors to implement the strategic direction of our company. They’re also responsible for day-to-day business operations.

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Scott Scoullar - Margaret WarringtonAaron SmailDean Tallentire - David Martin - Chris Lokum - Robyn Gillespie - Shawn Thomson

Scott Scoullar

Chief Executive Officer | CA, FCPA, BCA

Scott has overall responsibility for Summerset and is focused on developing and operating vibrant villages, and ensuring that respect for our customers is always at the core of everything we do.

Prior to becoming Chief Executive Officer in 2021, Scott was Summerset's Chief Financial Officer after joining Summerset in 2014.

Before joining Summerset, Scott held CFO roles at Housing New Zealand and Inland Revenue.

Scott was named CFO of the Year at the New Zealand CFO Summit Awards in 2019 and was NZICA’s Public Sector CFO of the Year in 2011. Scott is also a Fellow of CPA Australia, and a CPA New Zealand Council Board Member.

Margaret Warrington

Chief Financial Officer | CA, BCA, DipTeach

Margaret leads Summerset’s Finance and Strategy teams along with Corporate Services including our Property and Legal teams.

Before joining Summerset Margaret was CFO at NZX/ASX listed technology company EROAD, CFO at Statistics New Zealand and was previously Summerset’s Head of Finance.

Margaret holds a Bachelor of Commerce and Administration and is a member of Chartered Accountants ANZ. She also holds a Diploma of Teaching.

Aaron Smail

Chief Development Officer NZ | BE (Civil), BBS

Aaron leads Summerset’s development team in New Zealand, covering site acquisitions, project feasibilities, consents, and design for villages.

Previous roles in his 25 plus years of property and development experience include senior positions at Todd Property Group and Kiwi Property.

Aaron has been with Summerset since 2015.

Dean Tallentire

Chief Construction Officer NZ | BSc (Hons), HND, RICS

Dean leads our procurement, cost management, construction management and administration support teams in the construction team.

Dean has extensive construction and development experience and has led teams in the public and private sectors within developer and main contractor environments.

Dean has been with Summerset since 2015.

David Martin

Chief Sales and Marketing Transformation Lead | DipBusStuds and GradDip (Mrk)

David leads Summerset’s Sales and Marketing & Communications functions, responsible for bringing new residents to our villages and building our brand.

David has extensive experience leading sales, marketing and customer experience across New Zealand’s retirement, property and real estate sectors. Prior to coming to Summerset David was the General Manager Sales & Marketing at Metlifecare and has had senior roles at Todd Property Group and Harcourts International.

Chris Lokum

Chief People Officer | GAID, BMS, DipSocSci

Chris leads Summerset’s People & Culture team responsible for recruitment, training, Health & Safety, organisational development and more.

Joining Summerset in 2023 after roles in the public and private sector in New Zealand, Australia and the UK, including senior positions at BP and Waka Kotahi, Chris brings a breadth of experience across Human Resources with over 25 years delivering organisational efficiency, increasing organisational capability and providing strategic leadership.

Chris has qualifications in human resources, economics, management and psychology. She has completed executive programmes at Michigan and Cornell Universities and is a member of the Australian Institute of Company Directors.

Robyn Gillespie

Chief Digital Officer | BA

Rob leads Summerset’s Group technology team with responsibility for technology and digital systems across Australia and New Zealand.

Rob has over 30 years in senior tech roles delivering great outcomes for those businesses and their stakeholders.

Prior to joining us Rob was Chief Information and Operating Officer for nine years at WSP Australia and New Zealand and has worked across sectors including Downer, Spark, Dimension Data and Unisys where she started her career as a software developer.

Rob holds a Bachelor of Arts from University of Canterbury and has completed the Institute of Directors programme.

Shawn Thomson

Chief Operating Officer | BEd (Hons)

Shawn oversees Summerset’s operational performance across all of our villages. His focus is on service experience and delivery to ensures Summerset’s residents receive the highest quality experience, facilities and care.

Shawn joined Summerset in 2022 as a Group Operations Manager before moving into the General Manager Village Operations role in 2024. He was appointed COO in 2026.

After a number of years as an Executive Head in education, Shawn made the transition into the corporate environment and joined Curro in 2011, a JSE-listed education company in South Africa that constructs and operates independent schools. He held multiple senior roles at Curro from Regional Manager to GM of Operations and was a member of the Executive for four years.

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