About us
Meet the Grehamer & Company team

BAS GREGOOR
Managing Partner
Bas set up his own company, Gregoor Vastgoed, in 2011 focusing on initiating and mediating investment transactions. Here he gained vast experience in development projects and in the redevelopment of existing real estate. Between 2013 and 2020 he built up the real estate label Cityside Apartments with Rik Klinkhamer.
Bas gives his team the freedom and flexibility to take initiatives that ensure development and change, and the ongoing improvement in the rental and management of real estate. With his entrepreneurship and extensive network in real estate and finance, Bas knows how to add value to existing properties. His proven track record stems from his pioneering spirit and determination, as well as his pursuit of mutual 'win-win' situations.
Bas Gregoor
Managing Partner

RIK KLINKHAMER
Managing Partner
As Managing Partner, Rik focuses on the financial aspects of the Grehamer portfolio and on new ventures within Grehamer Invest. His background in business administration and his vast experience help him to identify and guide young, unique companies which, with additional capital and a strengthened company structure, have the potential to grow. Focus, attention to detail, passion and energy are concepts that Rik not only expects of himself but also of his business partners.
His knowledge of financial structures combined with his experience with mergers & acquisitions, as well as his track record in generating returns, make Rik a highly valued sparring partner among financiers.
Rik Klinkhamer
Managing Partner

Maarten Bosscher
Director Invest
Maarten’s professional motivation is to support entrepreneurs to grow and improve their business. Building on his multidisciplinary experience in strategy, operations and finance, he fulfils this role with Grehamer Invest's existing investments and is also responsible for the healthy expansion of the portfolio. Before joining Grehamer Invest, Maarten worked as an independent business advisor for SMEs, focusing on strategy development, M&A and operational and organisational improvement projects; Cityside Apartments was one of his clients. Before that he worked for eight years with PepsiCo; initially as operational manager for the production of Lays and Smiths and later as Financial Director. He began his career as a consultant with McKinsey & Company.
Maarten was trained as a technical physics engineer at the University of Twente and did an MBA at INSEAD in Fontainebleau.
Maarten Bosscher
Director Invest

Kasper Bakker
Director Invest – M&A
Kasper started at Grehamer Invest in 2022, where he is mainly responsible for the acquisition and disposal processes of portfolio companies, as well as finding and screening potential investments. His entrepreneurial character also ensures that he advises our portfolio companies on a strategic level.
Before joining Grehamer Invest, Kasper worked for 9 years in the M&A practice at EY Amsterdam. In that position he supervised several transactions, including the sale of Cityside Apartments. In addition, he advised several companies on financing structures and capital raisings. His experience in various sectors within corporate finance, as well as his experience in real estate, ensures a good fit within Grehamer & Company. Kasper graduated from the University of Amsterdam with a Master's degree in Finance.
Kasper Bakker
Director Invest – M&A

RICK ADRIAANSE
Finance Manager
Rick can draw on over 4 years of work experience with an accounting firm. He has completed his Bachelor’s in Business Administration (MER) and is currently in the final stages of his Master’s in Controlling at Nyenrode Business University. Rick derives great energy from setting up an effective and efficient financial control environment.
RICK ADRIAANSE
Finance Manager

MELVIN LINK
Development Manager
Melvin has a bachelor’s degree in Architecture, with a minor in Property & Real Estate. He is inspired by his wide variety of tasks and working in a young, ambitious and flexible organization. He sees these as forming an integral part of working at Grehamer & Company.
Melvin link
Development manager

Jeanine Buiter
Asset Manager
Working with a young and dynamic team is one of the reasons why Jeanine is back in the Grehamer & Company team. Cityside Apartments, which belonged to the current owners of Grehamer & Company until 2020, has worked for years as an employee. In her new role as Asset Manager at Grehamer Real Estate, she is responsible for all management activities and maintaining contact with the (commercial) tenants.
After the sale of Cityside Apartments, Jeanine worked as a technical property manager. She graduated from Facility Management with a minor Facility Management and Real Estate at Saxion in Deventer.
Jeanine Buiter
Asset Manager

CORINE HOP
Finance & Control
After graduating in Management, Economics & Law with a minor in Real Estate Management, Corine worked at an engineering firm where she was responsible for, among other things, financial project monitoring. She can apply this work experience and the real estate management knowledge she acquired during her studies in her new position at Grehamer & Company.
What Corine finds particularly appealing is the combination of finance, project monitoring and office management tasks: she has a broad and independent position within the company with a wealth of responsibilities.
CORINE HOP
FINANCE & CONTROL

Remco Edelenbos
Process & Information Specialist
Remco Edelenbos has been part of the Grehamer & Company team since April 1. As a Process & Information Specialist he is an important addition to the Invest branch. In his position, he will support participants in online process improvements, automation and guidance, and he will implement process improvements internally to make working at Grehamer & Company even better.
Before his current role, he gained practical experience with his previous employer and implemented process optimizations at one of the now affiliated participants of Grehamer & Company.
Remco Edelenbos
Information & Process Specialist

Margot Smit
Marketing & Communication
The size of Grehamer’s Real Estate and Investment portfolio is increasing and so is the visibility of the company.
In December 2020 Margot joined Grehamer as a Marketing and Communication specialist: for both Grehamer Real Estate and Grehamer Invest she is responsible for unambiguous positioning and clear communication.
She gained commercial experience as a sales consultant at Eijerkamp, and did an internship at PON. Margot has completed her bachelor’s degree in Communication Management with a minor Psychology at the Hogeschool Utrecht.
MARGOT SMIT
Marketing & Communication

Mirjam Welvering
Allround Office Management
Structure and order in the financial administration is indispensable and Mirjam has been making an important contribution to this since January 2022. She takes care of the administration and follow-up of debtors and creditors for both Grehamer Invest and Grehamer Real Estate. In addition, Mirjam supports the team with facility tasks.
She previously worked for a valuation and consultancy firm for 6 years as an all-round office employee. Before that she worked as a secretary at various real estate offices.
Voorheen werkte ze 6 jaar bij een taxatie- en adviesbureau als Allround Officemedewerker. Daarvoor heeft ze gewerkt als secretaresse bij verschillende Makelaardij kantoren.
Mirjam Welvering
Allround Office Management

JOS DE JONG
Project coordinator
Jos studied for a Bachelor’s in Business Administration at the Johan Cruyff University for top athletes. This, along with his baseball career and practical experience, have given him the necessary skills to successfully carry out this work. Jos really enjoys being part of a young and dynamic organisation, with a pleasant working environment, contact with people and making real change to a city landscape by transforming buildings.
JOS DE JONG
PROJECTCOÖRDINATOR

Julia Ubbink
Project Support
From August 20, Julia Ubbink will be part of team Grehamer & Company. As project support, Julia supports real estate projects and administrative tasks.
Julia is no stranger to the team, from February to June 2021 she did an internship as a Real Estate intern. During her internship she researched the changes of transformation in real estate. As a third-year business student at the Hogeschool Utrecht, she is looking forward to further developing her knowledge within real estate.
Julia Ubbink
Project Support
BAS DE JONG
BAS DE JONG
Project coordinator
As project coordinator, Bas makes full use of the competencies he acquired as a top athlete. As a baseball player with the Dutch national team, he had to be able to work in a team, perform under pressure, and have good communicative skills and an eye for detail. Bas is inspired to use these qualities to get everyone working from the same page during a project and to work to tight deadlines in order to deliver the high quality that is expected.
PROJECTCOÖRDINATOR
BAS DE JONG
Project coordinator
As project coordinator, Bas makes full use of the competencies he acquired as a top athlete. As a baseball player with the Dutch national team, he had to be able to work in a team, perform under pressure, and have good communicative skills and an eye for detail. Bas is inspired to use these qualities to get everyone working from the same page during a project and to work to tight deadlines in order to deliver the high quality that is expected.
BAS DE JONG
Project coordinator
As project coordinator, Bas makes full use of the competencies he acquired as a top athlete. As a baseball player with the Dutch national team, he had to be able to work in a team, perform under pressure, and have good communicative skills and an eye for detail. Bas is inspired to use these qualities to get everyone working from the same page during a project and to work to tight deadlines in order to deliver the high quality that is expected.
BAS DE JONG
Project coordinator
As project coordinator, Bas makes full use of the competencies he acquired as a top athlete. As a baseball player with the Dutch national team, he had to be able to work in a team, perform under pressure, and have good communicative skills and an eye for detail. Bas is inspired to use these qualities to get everyone working from the same page during a project and to work to tight deadlines in order to deliver the high quality that is expected.

Our office
KERKLAAN 33 Apeldoorn
