Sonja Siggberg
Sonja Siggberg
Sonja's practice includes capital markets transactions and other transactions involving listed companies as well as corporate governance related matters. She has advised clients in a number of equity and debt capital market transactions (both domestic and international), including IPOs, secondary share issues, complex corporate transactions, public takeovers and bond issues. She is also a trusted advisor in disclosure, insider and corporate governance matters as well as other securities markets related regulatory matters.
She has a lot of experience and her work is of excellent quality.
Capital Markets | Chambers Global, 2023
References
Parties:
Sega Europe Limited and SEGA Corporation (Buyers) Rovio Entertainment Corporation (Target)
Transaction:
Counsel to Sega Europe Limited and SEGA Corporation in the recommended public cash tender offer for all shares and options in Rovio Entertainment Corporation.
Deal value:
Approximately EUR 706 million
Role:
Counsel to Sega Europe Limited and SEGA Corporation

Johan Aalto

Sonja Siggberg

Jon Termonen

Marcus Lehtinen

Sofi Lehtinen

Claes Backström

Samuel Åkerlund

Satu Kokko

Oliver Vesterlund

Viola Karjalainen

Heidi Haanpää

Mikko Huimala

Lauri Putkonen

Annika Grönholm

Panu Siitonen

Hilma Mäkitalo

Wilhelm Sanmark

Ingrid Remmelgas

Karoliina Kaartinen

Monika Parkkinen

Hanna-Mari Mudi
Parties:
Cargotec Corporation, Konecranes Plc
Transaction:
Merger of Cargotec Corporation and Konecranes Plc
Deal value:
Approx. EUR 2.7 billion
Role:
Counsel to Konecranes Plc

Mikko Heinonen

Sonja Siggberg

Peter Forsberg

Mikko Huimala

Markus Bremer

Jenni Heurlin

Johanna Haltia-Tapio

Ingrid Remmelgas

Sini Paajanen

Matias Moberg

Riikka Kuha

Kaisa Himmanen

Agda Vähä-Piikkiö

Linnea Lehtonen

Pauliina Sutinen

Jenni Parviainen

Heikki Vesikansa

Khaled Talayhan

Mattias Friberg

Marc Tevell de Falck

Carolina Lefort Ahokanto

Sarah Ek
Parties
The German State (Buyer), Fortum Oyj (Seller), Uniper SE (Target)
Transaction
Fortum Oyj’s arrangements related to stabilisation of its German subsidiary Uniper SE. The package will ensure multi-billion funding for Uniper, sale of Fortum’s shareholding in Uniper to the German State for approximately EUR 0.5 billion as well as repayment of Fortum’s EUR 4 billion receivables from Uniper and release of EUR 4 billion parent company guarantees.
Deal value
Approx. EUR 4.5 billion
Role
Finnish counsel to Fortum Oyj

Mikko Heinonen

Antti Nyberg (Alanko)

Sonja Siggberg

Klaus Ilmonen

Markus Bremer

Mikko Huimala

Jan Lilius

Mikko Tavast

Matias Moberg

Robert Gordin

Sofi Lehtinen
Parties
Viking Line Abp
Transaction
Counsel to Viking Line Abp on its EUR 51.8 million issue of new shares with pre-emptive rights for existing shareholders.
Deal Value
EUR 51.8 million
Role
Counsel to Viking Line Abp

Sonja Siggberg

Klaus Ilmonen

Marcus Lehtinen

Markus Bremer

Hanna Lindberg

Stefan Stellato
Parties
Altia Plc, Arcus ASA
Transaction
Merger of Altia Plc and Arcus ASA to form Anora Group
Deal value
Preliminary aggregated annual revenue EUR 640 million
Role
Lead counsel to Altia Plc

Sonja Siggberg

Klaus Ilmonen

Anniina Järvinen

Robert Gordin

Kaisa Himmanen

Ebba Almén

Mikko Huimala

Lauri Putkonen

Essi Ellman

Jenni Heurlin

Peter Forsberg

Sarah Ek

Heikki Vesikansa

Harri Vehviläinen

Isabella Kartila

Markus Bremer

Tuomas Toivonen

Sami Niemi

Johanna Haltia-Tapio

Risto Ojakoski

Jenny Lundberg

Josephine Gjerstad Medina

Panu Siitonen

Sarita Schröder
Parties
Virala Acquisition Company Plc, Purmo Group Ltd
Transaction
Virala Acquisition Company Plc's merger with Purmo Group Ltd.
Deal Value
EUR 685 million
Role
Counsel to Virala Acquisition Company Plc

Sonja Siggberg

Anniina Järvinen

Linnea Lehtonen

Tommi Kovero

Sini Paajanen

Tero Pikkarainen

Oliver Vesterlund

Heikki Vesikansa

Stefan Stellato

Isabella Kartila

Antti Nyberg (Alanko)

Pauliina Sutinen

Axel Hård af Segerstad

Wilhelm Sanmark

Mikko Huimala

Jenni Heurlin

Douglas Essehorn

Emma Andersson
Parties
Virala Acquisition Company Plc
Transaction
Hannes Snellman acted as legal counsel to Virala Acquisition Company Plc on its IPO and the listing of its Class C shares on the SPAC segment of the regulated market of Nasdaq Helsinki
Deal Value
EUR 107.5 million
Role
Counsel to Virala Acquisition Company Plc

Sonja Siggberg

Anniina Järvinen

Sofi Lehtinen

Linnea Lehtonen

Tommi Kovero

Annemari Rosi

Aki Salmela

Heikki Vesikansa

Stefan Stellato

Isabella Kartila

Piia Ahonen

Marika Sorsa

Antti Nyberg (Alanko)

Tuomas Toivonen

Johanna Haltia-Tapio
Parties
Vaaka Partners (Seller)
Transaction
Vaaka Partners' sale of their shares held in Musti Group Plc through an accelerated book-building process.
Deal Value
Value not public
Role
Counsel to Vaaka Partners

Sonja Siggberg

Anniina Järvinen
Parties
Ahlstrom-Munksjö Oyj (target), a consortium consisting of Ahlström Capital, Bain Capital Private Equity, Viknum and Belgrano Inversiones (buyer)
Transaction
Recommended public cash tender offer for all shares in Ahlstrom-Munksjö Oyj by Spa Holdings 3 Oy
Deal value
Approximately EUR 2.1 billion
Role
Counsel to the consortium

Johan Aalto

Sonja Siggberg

Mattias Friberg

Antti Kuha

Annemari Rosi

Khaled Talayhan

Robert Gordin

Heikki Vesikansa

Stefan Stellato

Harri Vehviläinen

Helena Lamminen

Laura Sainio

Antti Nyberg (Alanko)

Marc Tevell de Falck
Parties
Local Tapiola Finance Ltd
Transaction
Local Tapiola Finance Ltd's issue of EUR 115,000,000 2-year senior unsecured floating rate notes
Deal Value
Value not public
Role
Counsel to Local Tapiola Finance Ltd

Tuomas Toivonen

Pauliina Sutinen

Sonja Siggberg

Annemari Rosi
Parties
Cramo Plc, Adapteo Plc
Transaction
Cramo’s partial demerger and listing of Adapteo on Nasdaq Stockholm
Deal Value
SEK 5.5 billion
Role
Counsel to Cramo Plc and Adapteo Plc

Sonja Siggberg

Mattias Friberg

Antti Kuha

Elina Toivakainen

Linnea Lehtonen

Khaled Talayhan

Markus Bremer

Janne Veneranta

Stefan Stellato
Parties
Ahlstrom-Munksjö
Transaction
Ahlstrom-Munksjö's EUR 150 million rights issue to partly finance the acquisition of Expera Specialty Solutions
Deal Value
EUR 150 million
Role
Counsel to Ahlstrom-Munksjö

Sonja Siggberg

Anniina Järvinen

Annemari Rosi

Elina Toivakainen
Parties
LocalTapiola Mutual Life Insurance Company
Transaction
LocalTapiola Mutual Life Insurance Company’s issue of EUR 100 million capital notes
Deal Value
Value 100 million
Role
Counsel to LocalTapiola Mutual Life Insurance Company

Markus Bremer

Sonja Siggberg

Janne Veneranta

Annemari Rosi

Valerie Wårvik
Parties
Ahlstrom-Munksjö (Buyer), Expera Specialty Solutions (Target), KPS Capital Partners (Seller)
Transaction
Ahlstrom-Munksjö’s acquisition of Expera Specialty Solutions, a U.S.-based specialty paper producer
Deal Value
USD 615 million
Role
Counsel to Ahlstrom-Munksjö

Sonja Siggberg

Fredrik Olsson

Johan Aalto

Antti Kuha

Anniina Järvinen

Albert Danielsson

Agda Vähä-Piikkiö

Carolina Wahlby
Parties
YIT Oyj
Transaction
Issue of EUR 100 million and EUR 150 million senior notes by YIT Oyj
Deal Value
EUR 250 million
Role
Counsel to YIT Oyj

Markus Bremer

Janne Veneranta

Sonja Siggberg

Annemari Rosi
Parties
The State of Finland (seller), Altia Plc (target)
Transaction
Altia Plc’s IPO and listing on the official list of Nasdaq Helsinki
Deal Value
Over EUR 270 million
Role
Counsel to Altia Plc

Sonja Siggberg

Markus Bremer

Anniina Järvinen

Annemari Rosi

Matias Moberg
Parties
Suomen Terveystalo Oy
Transaction
Terveystalo’s IPO and listing on the Nasdaq Helsinki stock exchange
Deal Value
The offering by the company and its shareholders was over EUR 870 million and the Company’s market value was over EUR 1.2 billion
Role
Counsel to Terveystalo

Klaus Ilmonen

Sten Olsson

Sonja Siggberg

Anniina Järvinen

Antti Kuha

Ella Hiltunen

Elina Toivakainen

Markus Bremer

Matias Moberg

Annemari Rosi
Parties
Lemminkäinen Corporation and YIT Corporation
Transaction
The combination of Lemminkäinen Corporation and YIT Corporation through a statutory merger
Deal Value
EUR 771 million
Role
Counsel to Lemminkäinen

Sonja Siggberg

Mikko Heinonen

Markus Bremer

Heikki Vesikansa

Johanna Haltia-Tapio

Elina Toivakainen

Laura Tavakka

Heikki Majamaa

Harri Vehviläinen

Jenni Heurlin

Stefan Stellato
Parties
Ahlstrom Oyj, Munksjö Oyj
Transaction
The combination of Ahlstrom and Munksjö through a merger
Deal Value
Approx. EUR 1,2 billion
Role
Lead counsel to Ahlstrom

Johan Aalto

Sonja Siggberg

Antti Kuha

Heikki Vesikansa

Janne Veneranta

Johanna Haltia-Tapio

Annemari Rosi

Stefan Stellato
Parties
Sampo plc (Buyer), Topdanmark A/S (Target)
Transaction
Sampo plc’s mandatory public cash offer for all outstanding shares in Topdanmark A/S
Deal Value
Value not public
Role
Counsel to Sampo plc

Johan Aalto

Sonja Siggberg
Parties
Acorda Therapeutics (Bidder), Biotie Therapies (Target)
Transaction
Acorda Therapeutics' public tender offer of the shares and other securities in Biotie Therapies
Deal Value
USD 363 million
Role
Counsel to Biotie Therapies Corp.

Mikko Heinonen

Klaus Ilmonen

Elina Toivakainen

Heikki Vesikansa

Anna-Maria Tamminen

Sonja Siggberg
Parties
Faron Pharmaceuticals Ltd
Transaction
Faron Pharmaceuticals Ltd's IPO and listing on the AIM market of the London Stock Exchange as well as the preceding fundraising of approx. GBP 10 million
Deal Value
Approx. GBP 10 million
Role
Counsel to Faron Pharmaceuticals Ltd

Sonja Siggberg

Heikki Vesikansa

Anniina Järvinen
Parties
Biotie Therapies Corp.
Transaction
Public offering and listing of Biotie Therapies Corp.’s shares on the NASDAQ Global Select Market New York
Deal Value
Approx. EUR 83 million
Role
Counsel to Biotie Therapies Corp.

Sonja Siggberg

Mikko Heinonen

Antti Kuha
Parties
Asiakastieto Group Plc
Transaction
Asiakastieto Group Plc’s IPO and listing on the Helsinki Stock Exchange
Deal Value
Approx. EUR 170 million
Role
Counsel to Asiakastieto Group Plc

Klaus Ilmonen

Sonja Siggberg

Heikki Vesikansa

Anniina Järvinen
Rankings
- "She has a lot of experience and her work is of excellent quality.", Capital Markets, Chambers Global 2023
- '"She is technically good," remark interviewees.', Capital Markets, Chambers Global 2022
- Ranked as a Highly regarded lawyer in Capital Markets and M&A in the 2021 edition of IFLR1000
- 'Sonja Siggberg "is very proactive, hands-on and always makes me feel like I receive very practical advice which allows me to move forward," says a client. She is well known for her ECM practice, being particularly active in listings.', Capital Markets, Chambers Global and Chambers Europe, 2021
- Ranked in Capital Markets in Chambers Europe 2020
- 'One client highlights her technical expertise in the capital markets area.', Chambers Europe, 2019
- 'Sources say that she is "a skilled capital markets lawyer," adding: "She is proactive and has a good, client-friendly approach."', Chambers Europe, 2018
- Ranked in Capital Markets in the 2017 edition of Legal 500
- Ranked as an "outstanding up and comer" in the 2017 edition (Finland: Capital Markets) of Chambers Europe
- Described as "a very dedicated and ambitious lawyer with a deep knowledge of company law." Sources also say that she is "a good listener.", Chambers Europe, 2017
- Ranked among the Rising stars in the 2017-2020 editions (Finland: M&A) of IFLR1000
Memberships and Positions of Trust
- Member of the Finnish Bar Association, 2005
Education and Professional Background
- Partner, Hannes Snellman, 2014 -
- Managing Associate, Hannes Snellman, 2012 – 2013
- Senior Associate, Hannes Snellman, 2005 – 2011
- Visiting lawyer, Mannheimer Swartling, Berlin, 2003
- Associate, Hannes Snellman, 2001 – 2005
- Master of Laws, University of Helsinki, 2001