Johann Dumas

CFO at Sienna Capital

Johann Dumas joined Sienna Capital S.à r.l. in October 2018 as Chief Financial Officer. He is based in Luxembourg.

Before joining Sienna Capital S.à r.l., Mr. Dumas was the CFO and a member of the executive committee of Quilvest Capital Partners (formerly Quilvest Private Equity), a family-owned global asset manager with approximately $5bn of assets under management split across diversified geographies and strategies.

Prior to this, Mr. Dumas headed the group finance department of Transcom, a global customer experience specialist with 30,000 employees worldwide that was listed on the Nasdaq OMX and spent 8 years at KPMG where he worked on international assignments for leading industrial, commercial and private equity firms.

Mr. Dumas is a chartered accountant in Luxembourg. He is a graduate of ICN Business School, holds a Master in Accounting and Finance from the University of Nancy and is a graduate of the INSEAD Advanced Management Program.



  • CFO

    Current role