General info

Sergiy Kazmirchuk specialises in corporate law and M&A’s, as well as banking and insurance regulatory matters.

Sergiy has more than 20 years of professional experience and extensive track record of advising clients on M&A projects and various corporate and regulatory matters. In particular, he advises clients in highly regulated industries such as banking and insurance. During his more than 10-year legal practice at Sayenko Kharenko, Sergiy acted on dozens of high-profile transactions involving sale and acquisition of Ukraine’s largest banks and insurance companies. His vast experience includes conducting legal due diligence of Ukrainian assets, full transactional support, pre- and post-completion support and other issues.

After adoption of the Law of Ukraine “On Joint-Stock Companies”, Sergiy participated in developing one of the first in Ukraine forms of constituent documents of a bank in a form of a public joint-stock company, that was subsequently used as a precedent [for what? In the industry?]. Notably, Sergiy was also among those assisting with converting the largest Ukrainian stock exchange into a private joint-stock company in 2010.

Sergiy has handled more than twenty successful applications for regulatory approvals for acquisitions of significant interest in Ukrainian banks and other financial institutions.

Following the introduction in 2012 of the statutory requirement to obtain written approval of the insurance regulator for acquisition or increase of significant shareholding in Ukrainian insurance companies, he advised one of the multinational insurance groups on obtaining the first approval ever granted in Ukraine for the indirect acquisition of a Ukrainian insurance company by a non-resident.

Before joining Sayenko Kharenko, Sergiy held executive positions in legal departments of Ukraine’s leading banks and non-banking financial institutions.


Recognized among leading lawyers for Сorporate and M&A by The Legal 500, 2021

Recognized among leading lawyers in M&A by Best Lawyers in Ukraine 2022


Professional membership and involvement

American Chamber of Commerce in Ukraine

European Business Association

Ukrainian Bar Association



LL. M. from I. Franko Lviv National University

Media & Insight Sergiy Kazmirchuk

20 August 2020


Sayenko Kharenko advises DCH on the acquisition of Bank Credit Dnipro
20 April 2019


Legal Digest
17 January 2019


National bank of Ukraine adopts new regulation on bank licensing
14 January 2019


Sayenko Kharenko has advised Henkell & Co. Sektkellerei GmbH on the squeeze-out of minority shareholders of PrJSC “Kyivsky Zavod Shampanskikh Vyn “Stolychniy”
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