Hans Wadsack founded our firm in 1983 in Zug, Switzerland, and he constantly developed it during the years. Before becoming an entrepreneur with his own firm, he was the chief accountant of a Swiss entreprise in Freetown, Sierra Leone, as well as the chief accountant of a US-entreprise in Zug. After that, he was financial Auditor at a Swiss audit firm in Zug and Zurich.
As from 1982 he was working as a Swiss certified accountant in the position of a manager in the area of auditing and tax advisory. Since the incorporation of wadsack treuhandgesellschaft, he was constantly developing and the firm.
Apart from that, he was one of the founding members of the Zug Association of Fiduciary Firms and was the secretary until the year 2000. Furthermore, he was also one of the founding members of the Zug Tax Association and was a member of the editorial commission until 2015 of the "Zuger Steuerpraxis". With his extensive experience, he advises national and international clients in the areas of audit, tax, accounting and business consultancy. He regularly attends various seminars in these areas in order to maintain the high quality standard of this work. He is member of several professional local and regional associations.
Before joining Wadsack, he was working in Santiago de Chile for a consulting firm and after that for an international audit and accounting firm in Zurich. During this time, he gained large experience in the area of financial audit and valuation services.
Mark graduated at the University of St. Gallen with the Bachelor in Economics and the Master in Banking and Finance. Moreover, Mark is a Swiss Certified Accountant and a licensed auditor for financial audits in Switzerland.
He is an active member of various professional associations, such as Expert Suisse. Apart from his activities in our Zug Office, he is leading our Office in Solothurn.
Languages: German, English, Spanish
M.A. HSG / Attorney at Law / Swiss Certified Tax Expert
Lukas has a wide experience in tax law that spans a period of almost 10 years. Before joining Wadsack as a Partner, he worked for 2 of the major business law firm in Zurich and in Zug where he was member of the tax team and was focusing on the tax advice for individual and corporate clients. During this time, he gained additional experience in all aspects of business law as well as in notarial services.
Lukas graduated at the University of St. Gallen with the major legal studies and is a Swiss attorney at law. Furthermore, he is a Swiss certified tax expert. He is an active member of the professional society and holds memberships in the Zug and Swiss bar association and is a member of the International Fiscal Association. Lukas is leading the tax and legal department of Wadsack.