Board of Directors / Partners

Josef U. Bollag worked for ten years as an asset manager at Credit Suisse, during which time he was also posted abroad in London and Paris. He then spent almost 20 years operating as an independent asset manager in Basel. In 2005 he joined Tareno Ltd as a partner. Josef U. Bollag has been the responsible fund manager for the Tareno Global Water Solutions Fund since its launch in 2007. From 2011 to 2020 he was CEO of Tareno, leading the company with a steady hand. Since 2020 he holds the position as Chairman of the Board of Directors at Tareno. A father of three and a fan of music and films, he actively supports cultural projects.
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After basic commercial training, Othmar Cueni went on to undertake further training on an ongoing basis, for instance in advertising and PR, in human resources management and in particular in banking and management (including at London Business School and Harvard Business School). Over a period of 35 years he held a number of posts at Credit Suisse in Geneva, Basel, Berne and Zurich, latterly as Managing Director. Among other things he was in charge of advertising and PR, personnel manager, chief management assistant, manager of overall bank projects, head of the Northern Switzerland region and head of private banking institutions and the Switzerland region at CS Business School. Between 2008 and 2014 Othmar Cueni was a member of the Executive Board of Basellandschaftliche Kantonalbank with responsibility for retail and private banking and for all branches. At the age of 62, he retired at his own request in order to have more time for his hobbies. He is president of the hiking organisation Wanderwege beider Basel and a member of the board of Baselland Tourismus. In addition he works on a freelance basis for upConsult. Mr Cueni has been a member of the Board of Directors of Tareno Ltd since October 2016. With over 40 years of practical experience in banking, 35 of which he spent in management posts, he is an ideal addition to the Board of Directors of Tareno Ltd.
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Mr Bucher obtained a degree in economics from the University of St. Gallen and completed the International Executive Programme at INSEAD Business School in Fontainebleau and Singapore. After his studies he first worked at Ciba-Geigy in Basel and South Africa. Following the merger to form Novartis he moved to Ciba Specialty Chemicals, where he held various posts in the finance department and in management between 1997 and 2007. In 2008 he became Chief Financial Officer at Gategroup, the largest independent airline caterer. Thomas Bucher launched the company on the stock market and completely overhauled its financial and tax structure. In April 2015 he became CFO of Alpiq AG. He has also been a member of the Board of Directors of Swiss Post since July 2019. He has brought his in-depth economic expertise to bear on the Board of Directors of Tareno Ltd since 2011. Mr Bucher is married and has a grown-up daughter. In his spare time he likes playing golf, cycling and skiing.
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Mr Battegay studied economics and law at the universities of Basel and Neuchâtel. He works as a lawyer and notary for the law firm Battegay Dürr AG in Basel, of which is a founding partner and the Chairman of the Board of Directors. Oscar Battegay has been a member of the Board of Directors of Tareno Ltd since 2013. His skills and contacts as an independent lawyer and notary and the knowledge and experience he brings from his practical work at banks and financial institutions are particularly valuable assets. He is an expert in company and commercial law, in banking and capital market law and in mergers, acquisitions and joint ventures. Oscar Battegay holds various other seats on boards of directors and boards of trustees, including for Camlog Holding AG, the Swiss Red Cross blood donation centre foundation for Basel-Stadt and Basel-Land (BSZ SRK beider Basel), and the Abisch-Frenkel Foundation. Mr Battegay is married and has two sons. In his spare time he enjoys cycling and skiing and is an avid reader, particularly of political literature. Between 2000 and 2004 he was involved in politics himself as a member of the Basel cantonal parliament.
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Jossi Hess has worked in banking for over 40 years. He gained his knowledge and skills at a number of different banks. After training as a forex and stock exchange dealer, he decided to specialise in asset management more than 30 years ago. Before joining Tareno Ltd as a partner in 2004, he co-owned an asset management company. He speaks German, French, English, Dutch and Hebrew. In his spare time he likes playing tennis and is actively involved with charitable institutions.
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Brought up in two different cultures – Swiss and Peruvian – Daniel U. Unger studied politics and history in Boston and Washington D.C. From 1996 he was a member of the management at UBS in various divisions of Wealth Management Latin America and Southern Europe. In 2004 he joined Tareno Ltd as a partner. Mr Unger's enthusiasm for different cultures and for travelling is obvious, considering that as well as German he speaks French, English, Italian, Spanish and Portuguese fluently.
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