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Our firm

Our firm

Gloor & Sieger is a law firm specializing in domestic and international business law. The roots of our law firm can be traced back to the beginning of the twentieth century. We have been operating under our current name since 1989.

Practice areas

Our focus is on advising domestic and foreign companies and private clients, particularly in the following areas in which we have extensive work experience:

Contracts/commercial law

Corporate Law/M&A

Trusts and estates

Foundation law

Private Clients/Family Offices

Rapid and precise problem analyses are our strength. Mutual trust, efficient communication and a high level of expertise form the basis for the development of timely and sustainable solutions for our clients. Our global network of correspondent lawyers, financial service providers and tax experts enables us to work in teams across law firms and borders if required.


Mr. Gloor

Alain A. Gloor

Dr. Iur., LL.M, Lawyer | Partner

Practice Areas

Trusts and estates, Contracts/commercial law, Corporate, Private Clients/Family Office Law/M&A.

1971 - 1974

University of Zurich Law School


Licentiatus iuris (equivalent to J.D.)


Admitted to the bar of the Canton of Zurich

1979 - 1980

LL.M., Univerity of Michigan Law School, Ann Arbor, MI, USA


Doctor iuris (equivalent to S.J.D.)

1975 - 1976

Junior associate with a Zurich law firm

1976 - 1977

Law clerk, District court Hinwil, Switzerland

1978 - 1979

Junior associate with a Zurich law firm

1981 – 1983

Associate with a Zurich law firm

Since 1984

Partner with the Zurich Law firm Lanz Mati Scherrer (renamed Gloor & Sieger in 1989)

Preliminary injunctions in the Area of Conflict of Federal Law and Cantonal Procedural Law ("Vorsorgliche Massnahmen im Spannungsfeld von Bundesrecht und kantonalem Zivilprozessrecht"), published as volume no. 59 of "Zürcher Schriften zum Verfahrensrecht", doctoral thesis, Zurich, 1982.

Zurich Bar Association (ZAV)

Swiss Bar Association (SAV)

International Bar Association (IBA)

Various directorships with Swiss and foreign companies

German, English, French

Mr. Sieger

Dr. Kurt Sieger

Dr. Iur., LL.M, Lawyer | Counsel

Practice Areas

Banking law, commercial criminal law, international legal assistance, corporate and contract law.

1967 - 1971

Faculty of Law of the University of Zurich


Licentiate in law


Doctorate in law

1979 - 1980

Columbia University School of Law, New York, USA (LL.M.)


Admitted to the bar of the Canton of Zurich

1976 - 1977

Law clerk at the District Court of Hinwil, Switzerland

1980 - 1982

Legal assistant at a law firm in Miami (USA)

1982 - 1984

In-house counsel with a trust company in Zurich

1984 - 1988

Associate | Partner at a Zurich law firm


Partner at Gloor & Sieger

The legally relevant knowledge of the legal entity under private law, ("Das rechtlich relevante Wissen der juristischen Person des Privatrechts") doctoral thesis Zürich, 1978 (Swiss publications on commercial and business law no. 33)

Zurich Attorneys' Association (ZAV)

Swiss Lawyers' Association (SAV)

International Bar Association (IBA)

American Bar Association (ABA)

Various directorships with Swiss and foreign companies

German, English, French


We look forward to your visit.

This is how you find us

By car from Bellevue, Zurich
  • From Bellevueplatz, take Bellerivestrasse in the direction of Rapperswil.

  • After Tiefenbrunnen station, turn right in the direction of Zollikon Zentrum.

  • Follow Dufourstrasse for approx. 1200 m until you reach the traffic roundabout.

  • Turn into Bergstrasse at the third exit.

  • After approx. 300 m turn right at the traffic lights into Rotfluhstrasse.

  • Gloor & Sieger Attorneys at Law is about 200 meters down the road on the left-hand side.

  • Parking lot to the right in front of the house.

By public transport
  • Take streetcar no. 4 to Tiefenbrunnen station.

  • Continue with bus no. 910, direction Zollikerberg to the bus stop "Gemeindehaus".

  • Walk up on Bergstrasse, after approx. 100 m turn right into Rotfluhstrasse, Gloor & Sieger Attorneys at Law is located after approx. 200 m on the left-hand side.