WIDEN
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At WIDEN, the team has a solid track record in advising on the regulatory compliance aspects of M&A transactions, as well as handling due diligence, share purchase agreements and contractual matters. Kristi Sild and Ants Karu co-head the practice; Karu is well-known for assisting with the tax aspects of M&A deals. The client roster includes prominent Estonian companies in the financial services, insurance, and fintech sectors. Martin Nikolajev is a name to note.
Legal 500 Editorial commentary
Testimonials
Collated independently by Legal 500 research team.
- 'Ants Karu genuinely stands apart in the Estonian market. His combination of corporate and tax expertise gives him an edge that many competitors simply don’t have. In practice, this means he doesn’t just solve problems as they appear — he anticipates them, and often finds creative, tax-efficient ways to structure deals that make life easier for the client long after the transaction is complete. Beyond the technical ability, I’ve valued his calm, pragmatic style. He is approachable, easy to speak with, and has an extraordinary ability to explain complex matters clearly. That kind of clarity is rare and incredibly reassuring when decisions are high-stakes. Working alongside him, Martin Nikolajev brings an energy and sharpness that complements Ants perfectly. In high-pressure situations, he is reliable, detail-focused, and remarkably quick to respond. Together, they bring a combination of deep experience and fresh perspective. They make complex corporate and M&A work not only manageable but truly client-friendly.'
- 'Ants Karu stands out as a very accurate, precise and talented lawyer and negotiator.'
Key clients
- Arco Vara
- Alfasan Holding B.V.
Work highlights
Advised Arco Vara AS on the acquisition of the Luther Quarter in central Tallinn.


