On January 5, 2026, the TEFFI legal team joined the ADER HABER Law Firm.
This move is aimed at strengthening ADER HABER’s position in the legal services market by combining the firm’s many years of comprehensive practice with TEFFI’s deep expertise in corporate law and M&A.
Joining ADER HABER is TEFFI’s Managing Partner, Igor Kryzhanovskyi, who will assume the position of Partner and Head of the Corporate Law and M&A Practice at the firm.
Igor Kryzhanovskyi has over 20 years of legal experience. He has earned a recognized professional reputation in corporate and M&A law, as well as in handling complex litigation. He currently represents leading Ukrainian and international investors in business structuring processes and advises international companies both in Ukraine and abroad.
Alongside Igor Kryzhanovskyi, a group of experienced lawyers from TEFFI is joining ADER HABER, bringing many years of experience in M&A, corporate restructurings, investment transactions, and comprehensive consulting on strategic business development.
All lawyers will operate under the unified ADER HABER Law Firm brand, ensuring team cohesion, standardized quality, and a consistent approach to client service.
“This is a strategic step in response to the global challenges our clients face,” said Yuriy Petrenko, Managing Partner at ADER HABER. “We are building a platform capable of delivering comprehensive, locally adapted, and simultaneously globally integrated legal solutions. The team led by Igor Kryzhanovskyi significantly strengthens our strategy for developing a multi-service, internationally oriented law firm.”
“Our ambition to grow in the Ukrainian and international markets aligns naturally with ADER HABER’s approach — a firm focused on innovation and leadership in times of rapid change. Modern corporate projects require integrated legal support, and within ADER HABER we can provide clients with comprehensive solutions, combining deep expertise, efficiency, and advanced digital tools,” said Igor Kryzhanovskyi.
The integration of the TEFFI team will allow ADER HABER to expand its range of corporate and financial services and provide clients with end-to-end legal support — from initial consulting and transaction structuring to execution.


