Penrhyn International is managed by a Board of Directors comprising six members representing Americas, Europe and North America. Together they drive the effective operation and governance of the network.

Board of Directors

Mattijs Kropholler (Amsterdam) 

Mattijs NJ 0899

    • Office: Maes & Lunau executive search, Amsterdam
      • Contact: This email address is being protected from spambots. You need JavaScript enabled to view it. / Linkedin profile

    Mattijs Kropholler has extensive experience in executive search at the most senior levels in the Netherlands and more widely in Europe. He became a Principal in Penrhyn International in 2005 on joining Maes & Lunau in Amsterdam. His special fields of expertise and experience are industry at large, energy and information technology, and he combines experience as a senior manager in those industries with an outstanding record of success as a provider of executive search consultancy in large and in smaller entrepeneurial organisations. 

    Mattijs is a graduate of the University of Leiden. In addition to Dutch he speaks English, German and French. 

    Mattijs has been Head of Personnel and Organisation for the Philips/AT&T joint venture, has been General Manager of a software subsidiary of AT&T, and has held the top Human Resources roles at two leading IT services businesses, Atos Origin and Getronics. 

Michael Herst (London)

michael herst

  • Office: Osprey Clarke, London
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Michael's career started in accountancy, where he gained commercial and corporate experience working in the profession, and as Head of Finance of a major international shipping group. He transferred his business knowledge into executive search, where over the past 25 years he has enjoyed a varied career.

Achievements include taking a staffing group and executive search practice to a full UK stock market flotation, and its subsequent sale to a major US listed group. He now conducts senior level search for major global corporations, with particular focus on infrastructure, transportation and logistics. Michael joined Osprey Clarke in 2008. He is proud to be a trustee of Haven House Children's Hospice; an important charity that supports families and cares for children and young people with life-limiting conditions across North and East London and West Essex.

Yanouk Poirier (Montreal)

New Chairman Yanouk Poirier May 2019

  •  Office: Leaders International, Montreal 
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Yanouk Poirier has over twenty years of professional experience in different sectors of economic activity, such as professional services, finance, media and information technology.

He has successfully led numerous assignments of top level executives and board members, for major companies and renowned firms operating in various business lines.

Recognized for his strong entrepreneurial spirit, Mr. Poirier puts his experience at the service of business leaders on a national and international level and supports them in the achievement of their business strategy.

Mr. Poirier is actively involved; he his on the Board of Directors of the Ballet Jazz of Montreal and of the Club St. James. He is also a mentor for Enablis, an organization providing assistance to entrepreneurs in developing countries to support them in the growth of their business.

He holds an MBA from the Université de Sherbrooke and a bachelor’s degree in Political Science with a major in International Relations from the Université du Québec à Montréal.

Luce Nordon (Paris)

Luce Nordon

  • Office: Agora Search, Paris
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Upon completing her business school studies, Luce Nordon started her career in advertising, with a three year tenure with the Euro-RSCG group as a Practice Group Leader where she was focused on luxury and CPG brands promotion. She then became part of the newly created Paris office of Norman Broadbent, a UK executive search firm, to expand the CPG and luxury cluster. She rapidly gained a strong expertise in other fields such as IT and digital.

In 1998, she joined Agora Search as a Business Partner. General Manager since 2008, Luce recently assumed the presidency in January 2014.

Luce leads searches for executives both in France and internationally. 

 Greg Gabel (New York)


  • Office: Coleman Lew Canny Bowen, New York
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Greg manages the firm’s New York office and leads executive searches for clients in a broad range of industries and functional areas. Greg joined Canny, Bowen, a predecessor firm, in 1991. He initially served as vice president and director of research before becoming managing director in 2000 and president in 2015. Prior to his start with Canny, Bowen, he was in the New York office of Heidrick & Struggles for four years.

With more than 30 years of experience in executive search, Greg has completed multiple CEO, COO, CFO, and other key leadership searches for the portfolio companies of middle-market private equity firms. He has also completed numerous assignments for chief legal officers and their direct reports in a diverse range of industries, including general counsel searches for some of the largest companies in the United States. He has extensive experience recruiting for medium technology industrial companies, both manufacturing and distribution, as well as for infrastructure, engineering, and construction firms.

Greg graduated from the University of Maryland with a BA and subsequently earned an MA from Columbia University. He and his wife have two children.

Yiota Arhontou (Montreal)
International Coordinator


  • Office: Penrhyn International
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Panagiota (Yiota) Arhontou joined Penrhyn International in 2019 as International Coordinator. Her mandate includes facilitating communications between members around the world and assisting in global practice groups across all industries. 

Yiota has a very diverse background. While working as an administrative support for an accounting firm, she also coordinated handicapped and medical transports in her area. She then went on to manage transport related call centres and drivers, which included a pilot project for a fleet of electric vehicles. 

Yiota interned for the communications departments of both the Quebec Ministry of Transportation and for the Research Institute of the McGill University Health Centre. A graduate from Concordia University of Montreal, Yiota completed a double major in Western Society and Culture, Second major Journalism with a specialization in broadcast. She is also a member of the Liberal Arts College. 

Perfectly trilingual, Yiota speaks French, English and Greek. She also has basic knowledge of Spanish and German. Her interests include travel, hockey, American and European football, live concerts, and reading.

Practice Groups

  • Practice Groups +

    Practice Groups Penrhyn has extensive experience and contacts within the Industrial & Auto, Financial Services, Consumer, Retail and Luxury Goods, Energy, Utilities & Renewables, Life Sciences, Education and Not-For-Profit, Technology & Telecommunications, Professional Services, and Logistics & Supply Chain sectors.
  • Automotive +

    Automotive   Intense global competition is driving rapid and transformative change across the automotive industry. On top of the need for cost efficiency, high volume and high speed production, consumers are demanding ever-higher quality and safety standards, sophisticated technology and design Read More
  • Consumer, Retail and Luxury +

    Consumer, Retail and Luxury These are challenging times for the consumer, retail and luxury sector as it strives to have a seamless shopping experience and adapt to advancements in technology. While many retailers are closing stores and shifting to e-commerce, others are remodeling stores Read More
  • Education and Not-For-Profit +

    Education and Not-For-Profit Penrhyn has represented government education departments, schools and universities, excelling at finding the ideal fit for each educational institution. Our searches also extend to sport, housing, the environment, church organisations and charities. Lead: Julia Soutter (Melbourne) Global practice experts: Teunis de Haas Read More
  • Financial Services +

    Financial Services   A volatile macroeconomic environment and continued market consolidation, combined with greater regulatory and investor scrutiny, have redefined financial services since the global financial crisis.The sector’s dynamic businesses must continue to adapt to change to create competitive advantage. This presents significant challenges, Read More
  • Life Sciences +

    Life Sciences Our Life Sciences and Biotechnology practice benefits from the wide knowledge and insight of the partners and associates in Europe, America and Asia. Our expertise extends beyond the pharmaceuticals market to also include to medical devices, diagnostics and generics, as Read More
  • Logistics & Supply Chain +

    Logistics & Supply Chain A volatile global economic environment and changes in the supply chain, combinedwith intense competition and continued market consolidation are reshaping the logisticssector. New technology and the drive towards a global footprint by many operators presentsignificant challenges, but also unprecedented opportunities Read More
  • Private Equity +

    Private Equity We have a proven track record of placing CEOs, CFOs and COOs into private equity portfolio companies, ranging from midcap to multi-billion dollar funds, as well as in small, medium and large-cap businesses backed by private equity investors – both institutional Read More
  • Professional Services +

    Professional Services Penrhyn has long-standing relationships with many of the top global management consultancies, technology systems integrators and outsourcing services companies. We have developed expansion strategies, identified practice leaders and built specialized industry teams throughout regions and countries. Additionally, Penrhyn has broad Read More
  • Technology, Media & Telecommunications +

    Technology, Media & Telecommunications Technology is changing the world very quickly, with leading Technology, Media & Telecoms (TMT) companies at the frontier of this disruption. To be successful in facing these new challenges, businesses across these industries must harness the significant opportunities technology offers Read More
  • Board Services +

    In an ever-evolving governance landscape, with increased scrutiny from investors and other stakeholders, a strong and effective Board is essential in meeting an organisation’s responsibilities and steering it to success. Penrhyn International member firms provide a range of services designed Read More
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