Team

Antonina Yaholnyk

Founding Partner

E-mail: yaholnyk@clacis.com

Antonina Yaholnyk has overall 29 years of legal practice of which over 20 years of experience handling antitrust and compliance matters. She headed Baker & McKenzie’s Competition & Compliance Law Practice Groups. Mrs. Yaholnyk holds a LL.M. degree from the University of Cambridge (UK), a Master’s degree International Law and Economics from the World Trade Institute (Switzerland). Antonina Yaholnyk chaired the European Business Association’s Competition Committee in 2011-2012. Mrs. Yaholnyk was elected as a Member of Council of Competition Law Committee at UBA in 2016-2017. Antonina Yaholnyk has been admitted to Bar in Ukraine since 2004.

Antonina has been recognized by Chambers Europe 2026 as a leading expert in competition and antitrust law in Ukraine for the fifteenth consecutive year as well as is recommended as a Leading Partner in Competition by Legal 500 EMEA 2026 for the ninth successive year. 

Clients describe Antonina as "one of the best lawyers", "excellent practitioner", with a "strong ability to see how the issues in question fit into the bigger market picture in the light of clients' interests", "very strong on the legal assessment underling her advice" and simply "She inspires trust" (Legal 500, Chambers Europe).

Our lawyers – team of dedicated professionals in antitrust and antitrust litigation – are graduates of leading local and foreign universities with professional experience in leading local and international law firms in Ukraine and the region.

Legal 500 EMEA 2025 endorses CLACIS team as the “team that operates on an international scale, advising both domestic and foreign clients across the full range of sectors, from telecoms, banking and finance to retail, agriculture, consumer products and beverages to pharmaceutical and shipping”.

CLACIS team “combines excellence in Ukrainian antitrust and merger control laws as well as commercial acumen that is hugely appreciated by clients” (Legal 500 EMEA 2024).

The team is "responsive, proactive, commercial and focused on getting the job done" (Chambers Europe 2021).

 Recognitions and awards of Antonina Yaholnyk, Managing Partner

• Band 1 practitioner in Competition/Antitrust by Chambers Europe (2010-2025)
• Band 2 practitioner in Competition/Antitrust by Chambers Europe (2026)
• Tier 1 Leading Partner in Competition in Ukraine by Legal 500 EMEA (2017-2026)
• Recommended as a Global Leader in Competition by Who’s Who Legal (2020-2023)
• Named a 2022 Client Choice Award Winner by Lexology (2022)
• Named Best Competition Lawyer in Ukraine by Best Lawyers (2013-2022)
• Named expert on antitrust and competition in Ukraine by Women in Business Law Expert Guide in 2019, 2021, 2022