Iris Brisson

Senior Associate, Member of the Finnish Bar

Services

  1. Dispute Resolution

Contact details

I advise our clients in assignments relating to dispute resolution. My main areas of practice are domestic and international court and arbitration proceedings.

Prior to joining Castrén & Snellman, I worked as an associate with the dispute resolution team of another Finnish law firm and as an in-house lawyer for a global company manufacturing mobile phones. During my studies, I gained valuable work experience by working as a trainee at reputable Finnish law firms and by completing an internship with one of the case management teams of the ICC International Court of Arbitration in Paris.

I hold a Master of Laws degree from the University of Helsinki.

Latest references

Energy company – Dispute arising from an energy supply agreement
We represent a major energy company in arbitration. The dispute has arisen out of a long-term energy supply agreement and the value of the claims is approximately EUR 33 million.
Case published 19.9.2023
Excelerate Energy – Chartering an FSRU to Finland
We advised Excelerate Energy on the conclusion of a lease agreement with Gasgrid Finland Oy for the Floating Storage and Regasification Unit (FSRU) Exemplar. The Inkoo LNG terminal project will have a significant impact on securing the supply of gas to Finland and Estonia as imports of pipeline gas from Russia cease. The Exemplar is the first FSRU in Finland and the Inkoo LNG terminal project is legally unique. Moreover, the project, which is critical for Finland’s and the Baltics’ gas supply, was completed in an exceptionally short timeframe. Our experts assisted the company in a wide range of areas including contracts, energy legislation, licensing, labour law, taxation and structuring.
Case published 9.6.2023
Urban Partners – Financing of EUR 100 million construction project in Herttoniemi, Helsinki
We advised the real estate investor and developer Urban Partners in the financing of a EUR 100 million construction project in Helsinki, which combines build-to-rent housing and care homes within one scheme.  A fund managed by Urban Partners (NSF V) purchased the plot of land in Herttoniemi, Helsinki and subsequently secured planning consent to deliver a hybrid living scheme. The modern complex will offer high-quality housing and care facilities for the elderly alongside rental accommodation. A total of 425 apartments and 108 care homes will be delivered across four buildings on the site.  The project will be implemented in accordance with Urban Partners’ sustainability targets. All buildings will be constructed to energy class A, and the project will aim for the highest Platinum level of the international LEED environmental certification and will be implemented in accordance with the EU taxonomy criteria.
Case published 5.1.2026
Citycon – Sale of a 275-apartment residential portfolio
We assisted Citycon Oyj in the sale of the Lippulaiva residential assets in Espoo, Finland. The sold residential assets consist of 275 apartments totaling approximately 13,000 sqm, located in connection to Citycon’s Lippulaiva shopping centre. The assets were sold at their latest IFRS book value for a gross purchase price of EUR 61.5 million.
Case published 19.12.2025
S-Bank – Issuance of EUR 150 million SNP notes and tender offer for notes maturing in 2026
We advised S-Bank Plc in its issuance of a EUR 150 million Senior Non-Preferred Notes and on the tender offer of its EUR 150 million Senior Preferred MREL Eligible Notes maturing in 2026. The tender offer required prior approval from the Finnish Financial Stability Authority based on the Commission’s regulatory technical standards (EU) 2023/827. The Stability Authority granted S-Bank a permission for repurchases of the notes. Based on the permission, S-Bank replaced the notes with own funds or eligible liabilities instruments of equal or higher quality at terms that are sustainable for the income capacity of S-Bank. According to the final tender offer results published on 10 December 2025, S-Bank repurchased a total of EUR 97.9 million of the notes. The new notes will pay a floating interest rate, which is determined based on 3-month Euribor added with a margin of 1.35 per cent. The notes were issued on 11 December 2025 and listed on Nasdaq Helsinki Ltd. The maturity date of the notes is 11 December 2029. The purpose of the issue was to meet the minimum requirement for own funds and eligible liabilities (MREL) and to finance the bank’s activities.
Case published 18.12.2025
eQ Community Properties Fund – Sale of seven social infrastructure properties
We are assisting eQ Community Properties Fund in the sale of seven social infrastructure properties to Kinland AS. The value of the transaction is approximately EUR 29 million, and the portfolio comprises three preschool facilities and four child protection units from different parts of Finland. The portfolio consists of modern and energy-efficient properties that are long-term leased to leading operators in the industry. The Weighted Average Unexpired Lease Term (WAULT) is approximately 11 years. The transaction is expected to close on 17 December 2025.
Case published 10.12.2025
Ålandsbanken – Consent solicitation process regarding T2 instruments and issue of SEK 350 million AT1 notes
We advised Ålandsbanken Abp in the consent solicitation process regarding its SEK 150,000,000 Tier 2 notes due December 2041 and SEK 200,000,000 Tier 2 notes due March 2043. The terms and conditions of the aforementioned instruments were amended by removing the write-down mechanisms in the consent solicitation process. In addition, we advised Ålandsbanken Abp on the issue of SEK 350 million Additional Tier 1 notes. The notes bear floating interest at the rate of STIBOR three months plus a margin of 3.35 per cent per annum. The AT1 notes were issued on 20 November 2025, and admitted to trading on the official list of Nasdaq Helsinki Ltd. The instrument has no maturity date and qualifies as Additional Tier 1 capital in accordance with the EU Capital Requirements Regulation. The issue strengthens Ålandsbanken’s capital structure by taking advantage of favourable market conditions.
Case published 10.12.2025
SuperOffice – Acquisition of Lyyti
We acted as Finnish counsel to SuperOffice AS, backed by Axcel, in its acquisition of Lyyti Oy from Finnish private equity firm Vaaka Partners and other sellers. Lyyti is a leading event management software company for physical, digital and hybrid events with a strong customer base in Finland, Sweden and France. SuperOffice is a leading provider of customer relationship management (CRM) software for small and medium-sized businesses across Northern Europe. Axcel is a Nordic private equity firm with a focus on technology, business services and industrials, healthcare, and consumer sectors.
Case published 9.12.2025

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