Rosa Tuominen

Senior Associate, Member of the Finnish Bar

Services

  1. Private M&A

Contact details

I advise our clients on assignments related to domestic and cross-border mergers and acquisitions. I also have experience in advising on corporate law.

I started working in Castrén & Snellman’s transaction team in July 2021. Prior to joining Castrén & Snellman, I worked at another business law firm, assisting in assignments related to mergers and acquisitions and corporate law.

I have a Master of Laws degree from the University of Turku. I also spent one academic year studying law at the University of Gothenburg in Sweden.

I am currently on family leave.

Latest references

Nevel – Acquisition of Labio’s business
We advised Nevel Oy in its acquisition of the business of Labio Oy. Lahti Aqua Oy and Salpakierto Oy sold their entire shareholdings in Labio to Nevel, expanding Nevel’s already significant biogas portfolio. The transaction will have no impact on Lahti Aqua’s water utility operations or Salpakierto’s municipal waste management responsibilities. Labio’s operations and customer relationships will continue as before. ‘This partnership is a natural next step for us as we continue investing in sustainable material efficiency and renewable energy solutions. By integrating Labio’s comprehensive offerings and expertise, we can provide customers with a strong platform for material circularity. We are also strengthening our market position as one of Finland’s leading material efficiency solution providers,’ says Ville Koikkalainen, Director of Industrial and Biogas Business at Nevel. Nevel is an energy infrastructure company offering advanced, climate-positive solutions for industry and real estate. It operates more than 130 energy production plants and manages over 40 district heating networks. Nevel’s annual turnover is EUR 150 million, and it employs 190 experts in Finland, Sweden and Estonia.
Case published 16.7.2025
Pihlajalinna – Sale of special housing services
We advised Pihlajalinna Plc on an arrangement whereby Pihlajalinna Terveys Oy and Ikipihlaja Setälänpiha Oy sold their special housing services business to Esperi Care Oy.  The transaction involved three Pihlajalinna Uniikki units in Hämeenlinna, Lohja and Riihimäki as well as Ikipihlaja Oiva in Raisio. As a result of the arrangement, more than 100 employees transferred to Esperi. Pihlajalinna is one of Finland’s leading private providers of social and healthcare services, offering a wide range of services to both private and public sector clients. Pihlajalinna has more than 160 locations across Finland.
Case published 2.6.2025
Valio – Acquisition of the Härkis® and Beanit® fava bean brands
We advised Valio Oy in its acquisition of Raisio Oyj’s plant protein business, related fixed assets and the Härkis® and Beanit® fava bean brands. The fixed assets include, among other things, the production equipment of the factory that makes plant protein products in Kauhava. The transaction supports Valio’s strategy to grow from a dairy company to a food company. This business acquisition will make us an even more significant developer and producer of plant-based protein products. The demand for these products will grow in the long term, and a great deal of growth potential still remains. In 2022, we acquired the Gold&Green® business and, since then, we have been carrying out strong product development and renewed the brand. Following successful product launches, sales in the last quarter of 2024 increased by about 50% from the previous quarter. With this acquisition, we are building our own production capacity. The production equipment of the Kauhava factory is just right for our needs and situation. says Kimmo Luoma, Valio’s Senior Vice President. Valio is a Finnish dairy and food company founded in 1905 and owned by Finnish dairy cooperatives. Valio has subsidiaries in Sweden, Estonia, the United States and China. In 2023, the Group had a turnover of EUR 2 278 million and more than 4 000 employees.
Case published 14.2.2025
Helkama-Autokauppa – Acquisition of Škoda Dealerships in Helsinki and Tampere
We advised Helkama-Autokauppa Oy in the acquisition of the Škoda dealerships in Helsinki and Tampere from Hedin Automotive Finland. Helkama-Autokauppa Oy operates as an independent dealer in the dealer network of Helkama-Auto Oy, the Finnish importer of Škoda cars, spare parts and accessories.
Case published 3.12.2024
Pernod Ricard – Sale of local Nordic beverage brands to Hartwall
We acted as Finnish counsel to Pernod Ricard in the sale of a portfolio of local Nordic brands to Oy Hartwall Ab, an affiliate of the Danish group Royal Unibrew. Pernod Ricard is a worldwide leader in the spirits and wine industry. The local portfolio of brands includes spirits, liqueurs and Finnish wine brands, the best-known being the liqueur Minttu, along with their related production assets based in Turku, Finland.
Case published 21.10.2024
Zendesk – Acquisition of Ultimate Enterprises
We acted as Zendesk, Inc.’s Finnish legal counsel in its acquisition of Ultimate Enterprises Oy, an industry leading provider of service automation using AI technology. The cross-border acquisition was completed in cooperation with the transaction’s lead counsel Allen & Overy. Zendesk is a leading global technology company that provides software-as-a-service and customer experience (CX) products based in the US. The acquisition of Ultimate expands Zendesk’s AI-powered CX offerings.
Case published 26.3.2024
Solina group – Acquisition of premium culinary brands OSCAR and Puljonki
We acted as Solina group’s Finnish legal counsel in its acquisition of Nestlé Professional Food A/S and Puljonki Oy, which own the premium culinary brands OSCAR and Puljonki, from the Nestlé group. The transaction is expected to be finalised prior to Q2 of 2024. Solina is a leading company within the food ingredient solutions industry and is active in 19 countries across Europe and North America.
Case published 23.2.2024
Speechly – Sale of Speechly to Roblox
We advised the sellers on the sale of Speechly, a Helsinki-based AI voice technology startup, to Roblox Corporation. Speechly, founded in 2016, provides accurate real-time automatic speech recognition and natural language understanding tools and APIs. In 2021, the Finnish news media Talouselämä selected the company as one of the ten most promising Finnish startups. Speechly was admitted to Y Combinator in 2022 and its investors include Cherry Ventures, SNÖ Ventures, TQ Ventures, Seedcamp, Quantum Angels, Joyance Partners, Social Starts and Tiny.vc.
Case published 21.9.2023
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