Anton Helanterä

Associate, Master of Laws

I advise our domestic and international clients in assignments related to private equity and venture capital.

Before joining Castrén & Snellman, I worked at a major Nordic bank with securities law matters and as a trainee at another major Finnish law firm.

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

Latest references

We supported byFounders.vc as the Finnish counsel in their investment in DataCrunch Oy in a USD 64 million Series A funding round. DataCrunch provides scalable AI compute solutions from energy-efficient data centers in Iceland and Finland. byFounders.vc is the community-powered early-stage venture fund investing in globally ambitious teams connected to the Nordic and Baltic countries.
Case published 11.9.2025
We advised the Savings Banks Group on an arrangement whereby the shares in Sp-Henkivakuutus Oy were sold to Henki-Fennia and at the same time the parties agreed on a long-term distribution cooperation for insurance savings and loan protection products. The closing of the transaction remains subject to regulatory approvals. Sb Life Insurance is a domestic life insurance company, established in 2007, offering insurance savings and risk insurance products to private customers and companies. The Savings Banks and Oma Säästöpankki Oyj act as agents for Sp-Life Insurance. Henki-Fennia is a subsidiary of Keskinäinen Vakuutusyhtiö Fennia, specialising in voluntary life, pension and savings insurance.
Case published 11.4.2025
We advised Huelsenberg Holding, a German group holding company, in a transaction whereby its subsidiary Schaumann Agri Austria GmbH & CO. KG acquired the entire share capital of RV Eurotrading Oy. Eurotrading will continue to operate as an independent subsidiary within the Schaumann Group. The transaction does not affect Eurotrading’s products, services or customer agreements. Schaumann is one of Europe’s leading manufacturers of speciality mineral feeds, probiotics and biological silage additives. Eurotrading provides agricultural professionals with profitability-enhancing products and has been a Schaumann product representative in Finland for over 25 years. 
Case published 20.2.2025
We supported byFounders.vc as the Finnish counsel in their investment in DataCrunch Oy in a USD 13 million seed funding round led by byFounders. DataCrunch provides scalable AI compute solutions from energy-efficient data centers in Iceland and Finland. byFoundersVC is the community-powered early-stage venture fund investing in globally ambitious teams connected to the Nordic and Baltic countries.
Case published 29.1.2025
We advised Tesi (Finnish Industry Investment Ltd) in its investment in the heavy duty vehicles company Oy Sisu Auto Ab. With this investment, Tesi became an owner in the company with a share of 24.4 per cent. Sisu Auto is a pioneer in the Nordic market in the development of heavy duty vehicles. Sisu’s core competences are in the product development and production of trucks and military vehicles. Tesi is a state-owned, market-driven investment company that invests in venture capital and private equity funds and directly in Finnish startups and growth companies. The investments managed by Tesi total 2.1 billion euros.
Case published 19.8.2024
We advised Exsitec Holding AB in a transaction whereby it acquired all the shares in M-flow Finland Oy. M-flow Finland Oy is a Finnish company engaged in reselling Medius B2B standard S2P software-as-a-service solutions in Finland. Exsitec Holding AB is a Swedish company part of the Nordic Exsitec group, which has over 20 offices in the Nordics. Exsitec delivers digital solutions to improve its customers’ businesses.
Case published 4.7.2024
We acted as the legal advisor to OP Finland Infrastructure LP in its investment in Cactos Fleet Finland Ky. Cactos Fleet Finland invests in smart electricity storage systems in Finland. OP Finland Infrastructure is a fund investing in Finnish infrastructure. The fund is managed by OP Financial Group. Cactos Fleet Finland primarily invests in electricity storage systems installed in real estate properties. In addition to their grid-related tasks, these systems can level out peaks in the property’s electricity consumption and provide back-up power. 
Case published 29.4.2024
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