Theresa Sigillito Hollema

Theresa Sigillito Hollema has focused her attention on cross-cultural management after years of successfully leading multi-cultural projects and teams. Her focus is on cross-cultural competence development, leadership development, and the impact of culture on project management processes, teams and managers. Her clients have included Philips, ING, Generali Group, LSG Group, and Boehringer Ingelheim, amongst others.

Prior to associating with THT, Theresa led acquisition and post-integration M&A projects in Central and Eastern Europe, software implementations, and other strategic and operational projects. Due to her business background, she has a practical approach to the learning and understanding of the impact of culture in the business setting. Theresa’s underlying conviction is that cultural competence is a key skill in a successful leader’s toolbox.

Theresa began her career in accounting and financial positions before receiving her MBA from the University of Michigan, where she was awarded the Henry Ford II Award for academic excellence . For the past decade, this American has worked extensively throughout Europe, continuing to expand her geographical boundaries. In addition, Theresa has taught Cultural Management for an International MBA Program and has been an active member of the Board of European Professional Women’s Network – Amsterdam, an organization which supports women leadership development in Europe.

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  • Programme 2: Follow up from RT4L TV Series 'Hoe maakt u het' December 16, 2017
    The programme broadcast 16 December explored Corporate Culture. For further information about the Apps mentioned in the programme MandA App   Innovation App   Change App  […]
  • Programme 1: Follow up from RT4L TV Series 'Hoe maakt u het' December 9, 2017
    You can download the App free from the Apple App store (IOS version) or Google Play store (Android version). Just search your app store for ‘Culture for Business’. For more information on the Intercultural Team App see here Watch this video clip of Fons (90 seconds) explaining the rationale for digitising culture tools and introducing the CFB App. […]
  • Announcement September 12, 2017
    Trompenaars Hampden-Turner Consulting has decided to terminate its formal collaboration with KPMG. Having evaluated our working relationship we both concluded that a separation is in the best interest of both parties. This means that we and our holding Trompenaars Hampden-Turner Consulting B.V. will continue our consulting activities independently from KPMG. […]
  • We're getting multi-culturalism all wrong - Patheos (blog) June 4, 2017
    Patheos (blog)We’re getting multi-culturalism all wrongPatheos (blog)And here I have pulled Riding the Waves of Culture, by Fons Trompenaars and Charles Hampden-Turner, off the bookshelf. This was a book that was given to us as reading material when we were preparing for our expat assignment in Germany, and it was … For the full article, please see here: htt […]
  • The new geography of management - Chartered Management Institute April 7, 2017
    Chartered Management InstituteThe new geography of managementChartered Management InstituteCultural theorists Charles Hampden-Turner and Fons Trompenaars believe that such companies owe their success to ignoring Western advice and plotting a distinctively Chinese course. Their genius, they posit, has been to integrate elements that, to the … For the full art […]