Pedro Antonio Arias is CEO of Sienna Capital since 2020
Previously, he created and oversaw the Amundi’s business line encompassing private equity, private debt, real estate, infrastructure and private multi-management businesses from 2013.
Earlier in his career, he was Deputy CEO in charge of M&A and Real Estate at French retailing Casino Group; he also served onthe Board of Casino’s major subsidiaries in numerous countries.
He started his career at Jones Day law firm before moving to Corporate and Investment Banking in various institutions; he notably worked as co-Head of the restructuring business at Rothschild & Cie for Europe.
Pedro Antonio Arias graduated in Law and holds a Master’s in Business from ESSEC Business School.
Denis Blank joined Sienna Capital in 2018 as the Chief Investment Officer.
Before joining Sienna Capital, Mr. Blank previously was the Chief Investment Officer of a family office that he joined in 2011.
He started his career at Bank of America Securities where he was an analyst for 2 years, before joining Natural Gas Partners as an associate, a private equity fund based in Texas, USA, and founded by Ken Hersh, focusing on the energy sector. He also was a partner from 2004 to 2013 at a hedge fund focused on Global Emerging Markets.
Mr. Blank holds a BA from Southern Methodist University and an MBA from the Stanford University Graduate School of Business.
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.
Figen Eren-Gangloff joined Sienna Capital in March 2020 as Chief Legal Officer. Prior to joining Sienna Capital, Ms. Eren-Gangloff worked for LVMH and L Catterton Real Estate (fka L Real Estate) as Director heading Legal, Compliance and Risk Management. She was also Conducting Officer for Compliance and Risk Management authorised by the CSSF.
Ms. Eren-Gangloff started her career at the Court of Justice of the European Union. After that, she worked for international law firms in Luxembourg where she gained experience in Corporate, Mergers and Acquisitions, Investment funds and litigation laws. Then she joined Oaktree Capital Management, as Director heading the legal and corporate secretary department.
She also served as an Independent Non-Executive Director at several boards including Alarko Carrier Sanayi ve Ticaret AS, a public company listed at Istanbul Stock Exchange and member of the US group United Technologies.
Ms. Eren-Gangloff earned a Master’s degree in law and a Postgraduate Diploma (D.E.S.S.) in European Law from the University Robert Schuman of Strasbourg (France) and the Institut Universitaire International of Luxembourg.
She is a member of Luxembourg Bar Association since 2003 and is a CSSF authorised Director. She is also a member of ILA (Institut Luxembourgeois des Administrateurs), and ALCO (Association Luxembourgeoise des Compliance Officers).
Ruairi Keeley is the Financial Associate at Sienna Capital.
Mr. Keeley formerly worked as a Credit and Portfolio Analyst at 23 Capital, an innovative financing and solutions firm specializing in the Sports, Music and Entertainment sectors.
He has previous experience with roles at EQT Partners across their Equity, Credit and Ventures funds, 3i Group within their Debt Management team and GFC Economics. Mr. Keeley holds an MA from the University of St Andrews.
Fatima Calvo Rodriguez joined Sienna Capital in June 2020 as Head of Accounting.
Before joining Sienna Capital, Ms. Calvo Rodriguez worked for Quilvest, a family-owned asset manager with approximately $5bn of AuM split across diversified geographies and strategies. She was chief accountant of the Corporate Department after spending several years in the Private Equity Accounting department.
Previously Ms. Calvo Rodriguez was responsible for a team dealing with a portfolio of Private Equity and Real Estate clients in the Accounting Compliance and Reporting department of Ernst & Young Luxembourg.
She holds a BA in Accounting from Henallux Arlon, Belgium and was graduated from Ordre des Experts Comptable in Luxembourg.
Christoph Ruiner joined Sienna Capital in 2019 as Senior Financial Controller.
Before joining Sienna Capital, Mr. Ruiner previously was Head of Corporate Development at Becker Holding AG & Co. KG, a family-owned world-wide system supplier for energy, automation, communication, transportation and infrastructure technology for the mining industry.
He also worked as Head of Business Controlling at Profine GmbH, an international producer of PVC profiles for windows and residential doors, shutter systems and PVC sheets having 29 sites in 22 countries.
Mr. Ruiner studied Business Administration at Saarland University and Hillsdale College and holds a PhD in Business Administration from Saarland University.
Antonina Rogler joined Sienna Capital in 2018 and is the Accountant and Administrative Assistant of the Luxembourg office.
From 2006 to 2014, Ms. Rogler worked in Finance and event management sectors as an administrative assistant and receptionist in Moscow and Paris.
Ms. Rogler is graduated in Management at The State University of Management in Moscow and also holds a degree in Management from the Paris-Dauphine University in Paris. She speaks French, English, Russian and German.