Gerard Sieben

Experienced CFO and board member, both executive and non-executive

Netherlands

About

Finance executive with a background in listed real estate and corporate finance, shaped over 20+ years across Europe and the US. I served as CFO and Management Board member at Unibail-Rodamco-Westfield N.V., working on navigating change, strengthening the financial foundation and supporting long-term value creation.  Today, I focus on roles where finance, strategy and governance come together. Alongside this, I am actively involved as Chair of the non-executive board at Le Champion, contributing to the development and governance of one of the Netherlands’ largest sports organisations.

Experience

  • Le Champion (4 yrs 5 mos)
    • Bestuursvoorzitter / Chair of the Board
      Sep 2025 - Present · 11 mos

    • Bestuurslid & Vice Voorzitter
      Mar 2022 - Sep 2025 · 3 yrs 7 mos

      Le Champion bevordert een gezonde en actieve samenleving. Dit gebeurd door mensen van alle leeftijden en van alle sportieve niveaus via aansprekende sportevenementen te enthousiasmeren om te gaan hardlopen, fietsen en wandelen. Plezier en persoonlijke topprestaties gaan daarbij hand in hand. Le Champion werd als vereniging opgericht in 1969 voor toerfietsers, later kwamen daar hardlopers en wandelaars bij. In 1986 werd de stichting opgericht om de grote evenementen onder te brengen. Evenementen van le Champion zijn onder andere Egmond Halve Marathon, de Ronde van Noord-Holland, de NN Dam tot Damloop, de TCS Amsterdam Marathon en de Wandel4daagse Alkmaar. De vereniging en stichting werken tot op de dag van vandaag nauw samen. Le Champion is inmiddels een van de grootste sportverenigingen van Nederland met zo’n 17.000 leden en jaarlijks 300.000 deelnemers. 70% van de leden focussen zich vooral op hardlopen, van de overige 30% doet ongeveer de helft aan fietsen en wandelen. Le Champion promotes a healthy and active society. This is done by encouraging people of all ages and all sporting levels to start running, cycling and walking through appealing sporting events. Fun and personal top performance go hand in hand. Le Champion was founded in 1969 as an association for touring cyclists, later runners and walkers were added. In 1986 the foundation was established to accommodate the major events. Events of le Champion include Egmond Half Marathon, the Ronde van Noord-Holland, the Dam tot Damloop, the TCS Amsterdam Marathon and the Wandel4daagse Alkmaar. The association and foundation work closely together to this day. Le Champion is now one of the largest sports associations in the Netherlands with about 20,000 members and 250,000 participants annually. 70% of the members mainly focus on running, of the other 30% about half do cycling and walking.

  • CFO & Management Board Member at Unibail-Rodamco-Westfield NV
    Jun 2018 - Jun 2026 · 8 yrs 1 mo

    CFO & Management Board Member of Unibail-Rodamco-Westfield N.V., a Dutch listed real estate investment trust and member of the Unibail-Rodamco-Westfield Group.

  • Unibail-Rodamco (10 yrs 1 mo)
    • Project Manager Finance
      Feb 2017 - May 2018 · 1 yr 4 mos

      Working on several projects to optimize IT use in Finance, sharing best practices and decrease use of excel and other manual processes outside the ERP system.

    • Finance Director a.i.
      Mar 2013 - Feb 2017 · 4 yrs

      Responsible for the Netherlands Finance and IT department, including Rodamco Europe corporate holding entities. Member of the Country Management Team and the Group Extended Finance Management Team. Unibail-Rodamco is Europe's leading listed commercial property company specialised in shopping centres in European capital cities, in offices in Paris and in Convention & Exhibition centres in Paris. The Group's portfolio was valued at €43 Bn at 31-12-2017 with a recurring result of €1,202 Mn on group level. In The Netherlands assets are valued at € 1.6 Bn and a NRI realised of € 62 Mn from recurring operations at 31-12-2017. Main shopping centers in The Netherlands owned are located in Amstelveen, Zoetermeer, Almere and Leidschendam. The last one is currently being redeveloped into Mall of the Netherlands ( http://mallofthenetherlands.com/ ).

    • Head of Accounting Corporate Center Schiphol and NL a.i.
      Aug 2010 - Feb 2013 · 2 yrs 7 mos

      Head of Accounting responsible for the AP, AR, GL, property accounting and part of the treasury department at the corporate centre of Rodamco Europe as well as the Netherlands regional organisation and managing a team of 12 persons. Reporting to the Finance Director. Unibail-Rodamco is Europe's leading listed commercial property company specialised in shopping centres in European capital cities, in offices in Paris and in Convention & Exhibition centres in Paris.

  • Interim Finance Director at Sieben Consultancy
    Apr 2007 - May 2018 · 11 yrs 2 mos

    Experienced in all sorts of financial interim / project assignments, like temporary coverage of financial positions, implementation and improvement of internal controls, restructuring, implementing financial packages, etc.

  • Group Controller a.i. at Jansen, Post & Cocx BV
    May 2007 - May 2008 · 1 yr 1 mo

    JPC is a wholesale company in the jewelry industry. As the group controller I was responsible for the finance department, both internal and external reporting, tax, insurance and payroll for one entity. Besides the operational financial responsibilities and managing a team of 3 persons I was also responsible for the holding and consolidated reporting.