Tarja Pirinen

Partner, Member of the Finnish Bar

Services

  1. Environment, Energy & Green Transition
  2. Infrastructure & Industrial Projects

Contact details

I advise clients in exploration and mining projects as well as in industrial and infrastructure projects in general.

I have more than 20 years of experience in providing comprehensive advice to exploration and mining companies on a wide range of matters arising throughout the project’s life cycle. I advise mining and other clients in permitting and regulatory processes, arrangements concerning the acquisition of permits, rights of use and access rights, administrative procedures, nature conservation and environmental liability matters, and commercial contracts. I have also assisted clients in several transactions and financing arrangements in the mining sector. Chambers Europe has ranked me among Finland’s leading energy and natural resources lawyers, and Lexology has listed me as one of Finland’s leading mining lawyers.

In my work, I have a practical and straight-forward approach. Knowing and understanding the client’s business and industry is essential in delivering effective, business-oriented legal solutions that promote the client’s business. While high-quality legal advice is the foundation of assisting clients, I also recognise that legal considerations are just one part of a broader picture. Technical factors, project timelines and financing matters may play a crucial role in a project or the client’s business, and they need to be taken into account in order to find the best solution or way forward for the client’s project and business.

Latest references

Terrafame – Environmental and water management permit processes concerning the company’s entire operations and the KL1 side rock area
Castrén & Snellman successfully assisted Terrafame Ltd in environmental and water management permit processes concerning the company’s entire operations and the KL1 side rock area, on which the Supreme Administrative Court issued its decision on 12 February 2026 (KHO 366/2026 and 367/2026). The changes made to the decisions of the Vaasa Administrative Court as a result of Terrafame’s appeals, enable the company to implement its new strategy and develop its operations as planned. The decisions of the Supreme Administrative Court brought the nearly ten-year-long permit process to a close.
Case published 20.2.2026
NoHo Partners – EUR 50 million secured notes and EUR 97 million senior secured facilities agreement
We advised NoHo Partners Plc on the issuance of EUR 50 million senior secured floating rate notes. The notes have a tenor of four years and mature on 10 September 2030. The notes bear interest at a rate of three-month EURIBOR plus a margin of 4.375 per cent. per annum. The notes were allocated to a mix of domestic and international investors. We also advised NoHo Partners on the negotiation of its new senior facilities agreement. The facilities agreement comprises a EUR 60,000,000 term loan facility, a EUR 10,000,000 capex facility and a EUR 27,000,000 revolving credit facility. “We are delighted by the interest investors have shown in the company’s Notes, which reflects confidence in our strategy. The successful issuance of the Notes, together with the new loan agreement, extends the maturity profile of our financing and enables the company to continue executing its growth strategy going forward. I would like to thank all investors for their participation, as well as our partner bank for the excellent execution of the Notes issuance”, says Jarno Suominen, CEO of NoHo Partners. OP Corporate Bank plc acted as the sole lead manager and bookrunner for the issue of the notes. NoHo Partners Plc is a Finnish group established in 1996, and it specialises in restaurant services being the creative innovator of the Northern European restaurant market. The company was listed in Nasdaq Helsinki in 2013 becoming the first Finnish listed restaurant company, and it has continued to grow strongly throughout its history. NoHo Partners’ vision is to be the leading restaurant operator in Northern Europe.
Case published 4.9.2026
Topfoods – Acquisition of Delice Plus
We advised Topfoods Oy, a Triton-backed Geia Group company, on its acquisition of Oy Delice Plus Ab, a Finnish supplier of cakes and pastries. Through the acquisition, Topfoods strengthens its retail business and further reinforces its position in the cakes and pastries segment. Founded in 2008, Topfoods supplies selected food products to professional kitchens, the retail sector, and the food industry. 
Case published 4.9.2026
Deka Immobilien – Acquisition of a prime logistics property
We advised Deka Immobilien on its acquisition of a prime logistics property located at Turvalaaksonkuja 4, Vantaa, for the Deka-ImmobilienEuropa open-ended real estate fund. The property is situated within the Aviapolis logistics cluster, which is Finland’s leading logistics hub, benefiting from its location next to Helsinki Airport and its connections to the country’s main transport routes. Completed in 2022, the modern property comprises 32,947 sqm of lettable space and is fully let on a long-term basis to Barona Varastopalvelut Oy. The tenant is a Finnish 3PL provider offering warehousing and e-commerce logistics services to companies in Finland and internationally and uses the property as its central logistics hub. The property has achieved a BREEAM International New Construction rating of Excellent and an EPC rating of A, and it features photovoltaic and geothermal systems, among other things.
Case published 3.9.2026
HANZA – Divestment of its Nivala and Sievi operations
We advised HANZA on the divestment of its Nivala and Sievi operations. The transaction was part of HANZA’s larger strategic reorganisation, where the company optimised its Finnish manufacturing cluster. Founded in 2008, HANZA is a Swedish mechanical engineering and electronics contract manufacturing company listed on the Nasdaq Stockholm main list. HANZA has approximately 5,000 employees and annual sales of SEK 10 billion. 
Case published 3.9.2026
Korona Invest – Sale of Innoflame
We advise Korona Invest and the other shareholders of Innoflame Oy on the sale of Innoflame to Sponsor Capital. The transaction makes Sponsor Capital the new majority owner of Innoflame. Korona Invest has been a shareholder of Innoflame since 2021 and, together with the other selling shareholders, has over the past five years supported the company’s growth, development and several strategically significant corporate transactions, through which Innoflame has strengthened its position as Finland’s leading product media company. The ownership change is intended to support Innoflame’s next phase of growth, including its ambition to build a significant European product media company with the capability to expand rapidly into new markets. The transaction is conditional to the customary closing conditions such as authority approvals. Innoflame is one of Finland’s leading product media specialists, helping its clients build a unified brand experience by offering the design, sourcing and management of product media as a single integrated service. Korona Invest is a Finnish private equity firm founded in 2006, specialising in buyout and growth investments in domestic small and medium-sized enterprises. It makes both majority and minority investments, structuring each project to suit the company’s growth strategy. 
Case published 27.8.2026
Marina Group – Acquisition of Iisiveneily and Porvoon Venekorjaamo
We advised Hopeasalmen Telakka Oy, part of Marina Group, on the acquisitions of Iisiveneily and Porvoon Venekorjaamo. The transactions form part of Marina Group’s expansion into the Finnish marina and boatyard sector, strengthening its position under the Quattro Marine brand. Following the acquisitions, Quattro Marine’s Finnish operations comprise Hopeasalmen Telakka, which operates boatyard facilities in Helsinki’s Mustikkamaa and in Tolkkinen, Porvoo, together with Iisiveneily and Porvoon Venekorjaamo. Marina Group is a Norwegian marina and boatyard consortium owned by the private equity sponsor Norvestor. It has grown rapidly through acquisitions to become the Nordic region’s largest boating services provider, having acquired 24 marinas and boatyards across Norway, Sweden and Finland within roughly a year.
Case published 24.8.2026
Neste – A EUR 250 million 10-year loan with NIB
We advised Neste as it signed a EUR 250 million 10-year loan with NIB. The loan will finance Neste’s investments related to research and development (R&D) in processing lower-quality feedstocks into high-quality renewable products; as well as the liquefied waste plastics (LWP) investment at Neste’s refinery in Porvoo, Finland. The R&D activities supported by the loan focus on the development of renewable solutions. These include, for example, expanding feedstock capabilities and technologies that enable the processing of new and lower-quality waste and residues into high-quality renewable end products. Part of the financing supports Neste’s liquefied waste plastics investment in Porvoo, related to upgrading low-quality plastic waste into high-quality feedstock at an industrial scale. The investment contributes to advancing circular economy solutions by enabling the use of hard-to-recycle plastic waste as a replacement for virgin fossil raw materials. The unit has an annual capacity to process up to 150,000 tonnes of liquefied waste plastic. Production ramp-up commenced in 2026.
Case published 19.8.2026

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