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Our Team

Vienna-PLH-1Patrick Lhoest – Managing Partner

After receiving his Master in Law at the University of Louvain (UCL), Patrick Lhoest worked for 8 years in commercial, management and financial functions at EMG Computer Leasing (part of GBL, Suez then ING).
He then joined OnSite (IT Integrator & Service provider) in 1995, one year after the start of the company. Member of the Board, he was successively Sales Manager, Country Manager Luxembourg, Director Business Development (M&A) until the integration in 2001 of the OnSite Group in the French public company Ausy S.A..
He was then responsible of co-defining and implementing the European acquisition strategy of Ausy until mid 2002, when he became CEO of the Ausy Belgium and Luxemburg entities. With his management team, he successfully transformed the company into an IT full-service integrator.

In January 2006, he joined Essensys Interim Management as Senior Advisor, where he contributed to the growth of the company on the Brussels and Walloon markets. He started his ow firm in Belgium in 2008 and Arrowstone S.àr.l. in 2021.


 _DSC8366Ghislain Gilliot – independent Partner*

Master of Science, Physics, UCL, Ghislain has more than 20 years international experience in the highly competitive automotive business.
Former Industrial Program Director at Faurecia, where he was responsible over 780M€, 4800 people, 8 plants, he also worked for Michelin as Manufacturing Director and for Valeo as Project Manager, Logistic and VPS Manager and Purchasing engineer.
In 2007 he acquired Simonis Plastics (Plastic injection, 2 plants: Belgium and China), where he is actually owner and CEO.
In 2013, he joined Arrowstone as Partner, on a part-time base, leveraging his wide and international industry experience and network.

*Operating through G-Square Consulting sprl.


Thomas Lhoest – independent Partner* 

After studies in Business Administration and International Management at the ICHEC in Brussels, Thomas worked in the insurance business before starting his own company offering Art Renting solutions for offices, a 2 years adventure that got him to really understand all he aspects of a company and to develop a strong sens of self-reliance and resourcefulness. 

He then operated a professional move and switched to the staffing business where he worked during 2 years for the US staffing company Volt. An experience that led him to work as a 360° recruiter and where he launched the European Data & Analytics department. He then joined Arrowstone as Partner in April 2017.

*Operating through Aurora Advisory srl.