Mr Sten Olsson > Hannes Snellman > Helsinki, Finland > Lawyer Profile

Hannes Snellman
PO BOX 333
00130/00131 HELSINKI

Work Department

M&A, Private Equity




Sten Olsson is Head of the firm’s M&A Group. He is recognised as one of the leaders in mergers and acquisitions in Finland and has been involved in some of the most significant transactions in Finland and Sweden.

Dual-qualified as a Finnish and New York attorney, Sten practiced for several years at international law firm Debevoise & Plimpton’s LLP’s New York and London offices and was admitted to the New York State Bar in 2001. Prior to that, he worked at Mannheimer Swartling’s private equity department in Stockholm. Sten has also worked with financial and legal matters at the European Investment Fund’s venture capital and buyout division in Luxembourg.

Sten serves on boards of various companies and non-profit organizations.


English, Finnish, Swedish


Member of the Finnish Bar Association
Member of the New York State Bar


European Investment Fund, Luxembourg, 2004-2006
Debevoise & Plimpton, New York and London, 2001-2004
Mannheimer Swartling, Stockholm, 1999-2000
LLM, UC Berkeley and New York University, 2000 (Fulbright Scholarship)
Master of Laws, Helsinki University, 1999
Member of the New York Bar and Finnish Bar Association

Lawyer Rankings

Finland > Commercial, corporate and M&A

(Leading individuals)

Sten OlssonHannes Snellman

Hannes Snellman deals with both domestic and cross-border M&A transactions, complex public takeovers, joint ventures, and fund and portfolio management issues. Its clients are active in the environment, real estate, and IT sectors, among others. The team is also highly regarded for work relating to structuring and debt and equity capital markets issues. Head of the M&A group  Olsson is dual-qualified in Finland and New York and focuses on venture capital and M&A matters. Mikko Heinonen is an expert in corporate transactions and securities regulation, while M&A specialist Johan Aalto also advises on corporate finance and capital markets mandates, and senior associate Annika Schaumann is noted for her work in private equity transactions. Managing partner Riikka Rannikko also contributes to the practice. M&A specialist Erik Stenman joined from Borenius in late 2020.