Firm Profile > Hergüner Bilgen Özeke > Istanbul, Turkey

Hergüner Bilgen Özeke
LEVENT 34394

Commercial, corporate and M&A Tier 1

Hergüner Bilgen Özeke, which is notably strong in cross-border M&A, works closely with foreign law firms in large and complex deals. It also advises clients on a standalone basis and generates work from entities in industries such as technology, telecoms, banking and real estate. In addition, it has been increasingly active in corporate transactions involving the e-commerce sector. Ümit Hergüner's M&A experience is complemented by his knowledge about governance issues and post-closing organisational matters. Hergüner jointly leads the group with Kayra ÜçerMert Oğuzülgen, energy sector expert Deniz Tuncel and Ufuk Yalçın.

Practice head(s):

Ümit Hergüner; Kayra Üçer; Mert Oğuzülgen; Deniz Tuncel; Ufuk Yalçın


‘Quick and responsive, high quality legal advice and broad area of expertise’.

‘Helpful and responsive, to-the-point legal advice and good value for money’.

‘Strong negotiators and good communicators’.

Key clients

Greif IP&S International


Telia Company

Employment Tier 1

Hergüner Bilgen Özeke handles cross-border employment disputes, collective bargaining agreements, assistance with terminations, restructuring, and collective redundancies. Bige Yücel, who ‘has strong negotiation skills’, and commercial disputes specialist Ufuk Yalçın head the team. Recent highlights include assisting Bloomberg with matters including employment contracts, settlement agreements, and employee termination, and advising International Paper Olmuksan on a mass redundancy.

Practice head(s):

Bige Yücel; Ufuk Yalçın


‘Bige Yücel is experienced in litigations and collective labour agreements.’

Bige Yücel has strong negotiation skills.

Key clients


Foot Locker



International Paper Olmuksan


Granite Services International Inc.

Sisu Axels


Monster Energy Europe Limited


Real estate and construction Tier 1

Hergüner Bilgen Özeke’s dedicated real estate practice group advises on dispute resolution, rental agreements, financing, development and construction, investment funds and asset management. Serkan Gül and Nazım O. Kurt lead the team, which recently advised Multi on zoning problems and development issues related to its shopping centres. Other clients include Union Investment Real Estate and Metro Properties.

Practice head(s):

Serkan Gül; Nazım O. Kurt


‘Their experience and vision is impressive.’

Key clients

South Stream Transport B.V. (“SSTTBV”)

EPM Gayrimenkul Tic. Ltd. Şti

Pramerica Real Estate (PGIM)

Extensa Istanbul Emlak Yatırım İşaat ve Tic. A.Ş

Metro Properties Gayrimenkul Yatırım A.Ş. (Metro Properties)

Union Investment Real Estate GmbH

Dubai Ports World Yarımca Liman İşletmeleri A.Ş. (DP World)

The Baku-Tbilisi-Ceyhan (BTC) Pipeline Company

Restructuring and insolvency Tier 1

Hergüner Bilgen Özeke has a strong capability in corporate restructurings, debt restructurings, insolvency and bankruptcy work, and liquidations of assets. Litigation is another driver of activity. The team includes Tolga DanışmanKayra Üçer, Ufuk Yalçın and Piraye Kuranel BaşolÜmit HergünerYeşim Aiı Şamlı and Deniz Tuncel are also recommended.

Practice head(s):

Ümit Hergüner; Tolga Danışman; Yeşim Api Şamlı; Piraye Kuranel Başol; Ufuk Yalçın; Kayra Üçer; Deniz Tuncel


‘The Hergüner team is as diligent as they get in the field’.

‘They are communicative and responsive’.

Key clients

St Martins Şişli Gayrimenkul Yatırımcılığı Ticaret A.Ş.

Tümad Madencilik Sanayi and Ticaret A.Ş., Nurol Holding A.Ş.

Holding Internationale de Boissons (global water business holding company of DANONE Group)

Hewlett-Packard Enterprise (HPE)

Reynaers Aluminium

ING Bank

Wafra Capital Partners, Inc.

Banking, finance and capital markets Tier 2

Hergüner Bilgen Özeke's group has expertise in corporate finance, real estate finance, acquisition finance, project finance and Islamic finance. It has particular experience of regulated sectors, such as mining, among others. The firm also advises clients on audits by the Capital Markets Board (CMB). The team generates mandates from government bodies, sponsors and multinational companies, among others. Piraye Kuranel BaşolYeşim Api ŞamlıKayra Üçer and Mert Oğuzülgen are the joint heads of the team.

Practice head(s):

Piraye Kuranel Başol; Yeşim Api Şamlı; Mert Oğuzülgen; Kayra Üçer

Key clients


Wafra Capital Partners, Inc.

Global Exchange


Telia Company

Taiwan Cement Corporation

Finansbank A.Ş.

Compliance Tier 2

Hergüner Bilgen Özeke's compliance work is primarily derived from its white-collar crime and investigations practice, where the firm advises clients on issues connected with fraudulent tender practices, insider trading, tax fraud, qualified fraud, and FCPA and UK anti-bribery investigations. Elsewhere, other compliance mandates are generated by other departments, including banking and finance, capital markets and competition. The firm is adept at handling data protection matters, including cross-border data transfers, data breaches, SARs and representing clients before local ministries and independent agencies including the Ethics Board of the Public Servants. On the general compliance front, the team advises on compliance training, the preparation of due diligence reports, writing company policies and policy reviews. The team is jointly led by Kayra ÜçerUfuk YalçınDeniz TuncelYeşim Aiı Şamlı and Bige Yücel.

Practice head(s):

Kayra Üçer; Ufuk Yalçın; Deniz Tuncel; Yeşim Aiı Şamlı; Bige Yücel

Key clients

Blackstone Group

Eversheds Southerland

Bridgepoint Capital

Global Exchange

OBSS Bilişim Bilgisayar Hizmetleri Danışmanlık Sanayi ve Ticaret Limited Şirketi

Hitachi Kokusai Electric Inc.

Hitachi Industry & Control Solutions, Ltd.

Energy Tier 2

Hergüner Bilgen Özeke advises on financing, M&A, greenfield development and cross-border transactions. It handles work in the oil and gas, nuclear, mining, natural gas and electricity sectors. Clients include the Baku-Tbilisi-Ceyhan Pipeline Company and South Stream Transport. Recent highlights include assisting Sunfarming with the financing of a solar plan project. Ümit Hergüner and Deniz Tuncel are the practice heads.

Practice head(s):

Ümit Hergüner; Deniz Tuncel

Key clients

Baku-Tbilisi-Ceyhan (BTC) Pipeline Company

South Stream Transport B.V.

SUNFARMING Eurasia Enerji Üretim A.Ş.

Mobil Oil Türk A.Ş. (“MOTAŞ”)

Insurance Tier 2

Hergüner Bilgen Özeke, which often acts as local Turkish counsel to international insurance companies, advises on company establishment, operational compliance, M&A, pension company regulatory issues and dispute resolution (including litigation and arbitration). It also handles emerging areas of insurance law, including warranty and indemnity (W&I) insurance. The team works closely with the data protection practice in order to advise on insurance-related customer data issues. Corporate partner Kayra Üçer and dispute resolution specialist Tolga Danışman are the joint heads of the practice.

Practice head(s):

Tolga Danışman; Kayra Üçer

Key clients

Vienna Insurance Group

Suzuki Otomobil Paz. ve Tic. A.Ş.

Norton Rose Fulbright (for AIG)


Sompo International

Gulf Sigorta

Project finance/projects Tier 2

Hergüner Bilgen Özeke advises on project finance and development in relation to PPPs, BOTs and build-lease-transfers (BLTs). Its work covers a wide variety of sectors, including healthcare, infrastructure, nuclear energy, oil and gas, mining and electricity. The practice covers projects in Turkey and further afield overseas, particularly the Balkans and West Africa; Aslı Budak is experienced in projects in Ivory Coast, Albania and South Africa. Ümit HergünerSenem DenktaşPiraye Kuranel Başol and Yeşim Api Şamlı are other key figures in the group. Clients include international and domestic contractors, sponsors, financiers and governmental bodies.

Practice head(s):

Aslı Budak; Ümit Hergüner; Senem Denktaş; Piraye Kuranel Başol; Yeşim Api Şamlı;


‘Very dedicated and diligent team, highly experienced in large financings’.            

‘Yeşim Api is very hands-on and dedicated to the matter’.

Key clients

Black Sea Trade and Development Bank (BSTDB)

Deutsche Investitions – und Entwicklungsgesellschaft mbH (DEG)

Export Development Canada

Overseas Private Investment Corporation


K Sure

SUNFARMING Eurasia Enerji Üretim A.Ş.

Avrasya Tüneli A.Ş. (Eurasian Tunnel a.k.a. “ATAŞ”)

İGA Havalimanı İşletmesi A.Ş.

Baku-Tbilisi-Ceyhan (BTC) Pipeline Company

Finansbank A.Ş.

South Stream Transport B.V.

Otoyol Yatırım ve İşletme A.Ş.

Kocaeli Hastane Yatırım ve Sağlık Hizmetleri A.Ş.

Gaziantep Hastane Sağlık Hizmetleri İşletme Yatırım A.Ş.

Competition Tier 3

Hergüner Bilgen Özeke’s competition and antitrust team acts for clients on mock investigations, dawn raids, multijurisdictional merger reviews and other M&A-related competition matters. The firm generates a significant flow of work, owing to its strong client following of Turkish and global companies. Kayra Üçer jointly leads the team with associate Süleyman Cengiz.

Practice head(s):

Kayra Üçer; Süleyman Cengiz

Key clients


Adel Kalemcilik Ticaret Sanayi Anonim Şirketi


Sumitomo Chemical Co., Ltd.

Hewlett Packard

Bristol Myers Squibb


CNH Industrial NV

Securitas AB

Olmuksan International Paper

Kalenakliyat Seyahat ve Turizm  A.Ş.

Dispute resolution Tier 3

Hergüner Bilgen Özeke's team is strong in multijurisdictional litigation and arbitration, and has a strong connection with Europe and the US. It is experienced in various types of general commercial disputes, as well as those involving employment, real estate, labour law, IP, bankruptcy and restructuring issues. It also advises on consumer claims, antitrust, real estate and tax litigation matters, among others. Elsewhere, the firm is active in the international arbitration sphere. The group is jointly led by Ümit HergünerAyşe Hergüner BilgenTolga DanışmanUfuk YalçınBige Yücelİsmet Bozoğlu and Nazım O. Kurt.

Practice head(s):

Ümit Hergüner; Ayşe Hergüner Bilgen; Tolga Danışman; Ufuk Yalçın; Bige Yücel; İsmet Bozoğlu; Nazım O. Kurt

Key clients

LM Wind Power Blades Turkey

CSL Behring AG

Telia Company

Türk Pirelli Lastikleri A.Ş.

OBSS Bilişim Bilgisayar Hizmetleri Danışmanlık Sanayi ve Ticaret Limited Şirketi

Foot Locker

A consortium of four Turkish construction companies

IT and telecoms Tier 3

Hergüner Bilgen Özeke is particularly focused on data protection compliance, cross-border data transfers, data breaches and subject access requests (SARs). The firm also handles other matters for clients by leveraging its strengths in commercial litigation, M&A, corporate, employment and competition law. Clients include Turkish and multinational companies. The team is jointly led by Kayra Üçer, Ufuk Yalçın and Deniz Tuncel.

Practice head(s):

Ufuk Yalçın; Kayra Üçer; Deniz Tuncel


‘Easy to reach, responsive, high quality legal advice, value for money, broad area of expertise and very good communication skills’.

Key clients

Hitachi Kokusai Electric Inc.

Hitachi Industry & Control Solutions, Ltd.

Scientific Games Szerencsejatek Szolgaltatasok Kft

Sony Pictures Entertainment Inc.

OBSS Bilişim Bilgisayar Hizmetleri Danışmanlık Sanayi ve Ticaret Limited Şirketi

Tax Tier 3

Hergüner Bilgen Özeke has been increasingly active in tax-related court proceedings arising from an increase in property tax imposed on real estate owned in Turkey. In addition to being adept at tax litigation, the team works closely with the corporate department. Ayşe Hergüner Bilgen leads the team, which was strengthened by the arrival of Emre Ergin from a multinational audit company. Ece Başaran Küçük was promoted to senior associate.

Practice head(s):

Ayşe Hergüner Bilgen

Key clients

LM Wind Power Blades Turkey

Intellectual property Tier 4

Hergüner Bilgen Özeke's team advises on a broad range of IP matters involving patents, trade marks, utility models, industrial designs, domain names and copyright. Its services cover the registration, prosecution and enforcement of IP rights. In addition, the group assists clients with licensing, franchising, distribution contracts and IP transfers. Ayşe Hergüner Bilgen, who has over 30 years of experience, co-heads the team with Bige Yücel.

Practice head(s):

Ayşe Hergüner; Bige Yücel

Key clients

Board of Directors Association

OBSS Bilişim Bilgisayar Hizmetleri Danışmanlık Sanayi ve Ticaret Limited Şirketi

The firm: Founded in 1989, Hergüner Bilgen Özeke Attorney Partnership is one of the oldest, largest, and most well-established corporate law firms in Turkey. In spite of its size, the firm maintains a personalised attention to detail that its clients have come to expect. Among Turkish law firms with a global reach, the firm is one of the few that is truly local and full-service. This combination allows Hergüner to equally advise large multinational organisations, international financial institutions, private individuals, and local start-ups and has earned the firm its reputation for flexibility and innovation.

Areas of practice: Banking and finance: Hergüner represents IFIs, banks, corporations and other investment experts in all sorts of lending transactions including corporate lending, acquisition finance, and project finance. The team also handles acquisitions of financial institutions, cross-border Islamic finance transactions such as murabaha agreements and sukuk offerings, and advises on international compliance issues such as FATCA, Dodd-Frank, and international sanctions regimes in addition to local compliance issues.

Commercial, Corporate and M&A: for the last two decades Hergüner has been involved in the majority of significant Turkish M&A deals, and it is a pioneer in the development of corporate governance principles in Turkey. The firm is proud to have represented many international clients in Turkey during their initial entry into the market, through further acquisitions, and in some cases, their exit transactions, in addition to assisting these clients with corporate compliance matters throughout their entire operational life.

Capital markets: Hergüner’s capital markets team represents investors and financial institutions in some of the most innovative securities transactions in the Turkish market. The team handles corporate bond issuances, sale/purchase transactions concerning the shares of the leading publicly held entities in Turkey, mandatory tender offer transactions, exemption applications, and equity-offering transactions.

Real estate and construction: Hergüner advises the world’s leading international retailers, real estate funds and developers in transactions involving all forms of real estate from ports to urban regeneration. The team also specializes in sophisticated real estate litigation, arbitration and represents local and international developers and investors before civil courts, administrative courts, tax courts and arbitral tribunals.

Competition: Hergüner’s competition team is led by a former state antitrust case manager and provides legal advice and assistance related to pre-investigations and investigations that have been initiated by the Competition Board, in addition to providing compliance training and programs and competition law due diligence services to clients.

Dispute resolution: Hergüner’s dispute resolution team handles every type of dispute from complex litigation to international and domestic arbitration, as well as white collar investigations, administrative disputes, and mediation. The firm’s decades of experience includes commercial disputes, high profile administrative lawsuits, and criminal proceedings.

Employment: Hergüner advises Turkish and international companies in all aspects of employment, from sensitive c-suite executive issues to contentious collective bargaining negotiations. The team advises our clients on their daily corporate needs as they relate to employment issues and provides legal assistance in the most complex, sensitive matters, resulting in innovative legal solutions.

Data protection: Hergüner has extensive experience in data protection and cybersecurity matters, including data protection compliance projects and guiding clients through data protection legislation as it relates to any aspect of their business, as well as data transfer issues and handling data breach notifications. Members of the team, equipped with global and local data protection knowledge, are able to navigate client companies through redesigning or adapting their data protection programs, policies, and data transfer schemes to comply with Turkish data protection law.

Energy and natural resoruces: from power plants to pipelines, Hergüner is a leader in the energy field, both in terms of innovative solutions to novel energy issues and benchmark international deals. The team has significant experience in mine financing, major cross-border oil and gas pipelines, and internationally funded generation facilities. Hergüner advises clients in all segments of the energy sector including traditional resources like oil and gas, mining, natural gas, coal, and nuclear, as well as renewable energy resources such as wind, solar, tidal, and geothermal, which can present novel and unique legal issues.

IT and telecoms: Hergüner represents operators, agencies, investors and lenders in a range of regulatory and transactional matters covering everything from licensing and data protection to litigation.

Intellectual property: the Hergüner team supports all aspects of IP law including patents, trade marks, utility models, industrial design, geographical signs, domain names, copyright, litigation and enforcement.

Project finance/projects: from Ottoman-era concessions to modern PPPs, Hergüner effectively wrote the book on project finance, advising clients on some of the largest projects in Turkish history.

Transport: from financing to operations, Hergüner represents sponsors, project companies, financial institutions, contractors and suppliers developing motorways, railways, ports and airports.

Restructuring and insolvency: Hergüner represents local and international companies through both M&A-related insolvency and restructuring, as well as sensitive bankruptcy enforcement proceedings.

Tax: from domestic structuring and authority disputes to multinational AD/CVD and safeguards cases, Hergüner advises local and international companies on all their tax issues.

Media and entertainment: Hergüner advises major media sector projects, including regulatory, commercial, and transactional aspects of print, television and radio broadcasting.

Global trade and customs: Hergüner has broad experience in investigations concerning import safeguard measures and anti-dumping made by the Imports General Directorate of the Ministry of Trade and acts as counsel to Turkish producers on the plaintiff side as well as to foreign exporters on the interested party side.

Immigration and citizenship via Investment: Hergüner’s citizenship acquisition team represents foreign individuals throughout the process of obtaining Turkish citizenship with our unique understanding and deep knowledge of the requirements and procedures necessary to become a citizen.

White-collar and investigations: Our team has first-rate experience in dealing with government investigations and enforcement matters. Our lawyers have substantial experience in defending clients through all phases of investigations and with criminal and civil enforcement proceedings, having represented clients before the prosecutors and courts.

Department Name Email Telephone
Commercial, corporate and M&A; Energy Ümit Hergüner
Dispute resolution; Intellectual property; Tax Ayşe Hergüner Bilgen
Dispute resolution; Restructuring and insolvency Tolga Danişman
Project finance/projects; Banking, Finance, and Capital Markets; Commercial, corporate and M&A; Competition; Media and entertainment Senem Denktaş
Commercial, corporate and M&A; Competition Kayra Üçer
Project finance/projects; Transport Asli Budak
Real estate and construction Serkan Gül
Project finance/projects; Banking, Finance, and Capital Markets Piraye Kuranel Basol
Project finance/projects; Banking, Finance, and Capital Markets Yeşim Api Şamlı
Commercial, corporate and M&A; Employment; Dispute Resolution Ufuk Yalçın
Employment,Intellectual property, Tax Bige Yücel
Commercial, corporate and M&A; Banking, Finance, and Capital Markets M. Mert Oguzülgen
Commercial, corporate and M&A; Energy; IT and Telecoms Deniz Tunel
Real Estate and Construction Nazim O. Kurt
Dispute Resolution; Transport; Commercial, corporate and M&A; Arbitration; Shipping and Transport İsmet Bozoğlu
Photo Name Position Profile
Mr Kayra Üçer  photo Mr Kayra Üçer Mr. Üçer is a partner in the M&A and Corporate Support, Competition,…
Ms Yeşim Fethiye Api Şamlı  photo Ms Yeşim Fethiye Api Şamlı Ms. Api Şamlı is a partner in the banking finance, capital markets,…
Mr İsmet Bozoğlu  photo Mr İsmet Bozoğlu Mr. Bozoğlu is a partner in the dispute resolution, arbitration, corporate support,…
Ms S. Aslı Budak  photo Ms S. Aslı Budak Ms. Budak is a partner in the projects & infrastructure, arbitration, energy,…
Mr Tolga Danışman  photo Mr Tolga Danışman Mr. Danışman is a partner in the dispute resolution, white collar and…
Ms Senem Denktaş  photo Ms Senem Denktaş Ms. Denktaş is a partner in the Projects & Infrastructure, Banking and…
Mr Serkan Gül  photo Mr Serkan Gül Mr. Gül is a partner in our firm’s real estate practice group.…
Mr Ümit Hergüner  photo Mr Ümit Hergüner Mr. Hergüner is a founding member and the Senior Partner of the…
Ms Ayşe Hergüner Bilgen  photo Ms Ayşe Hergüner Bilgen Ms. Hergüner Bilgen is a founding partner of the firm and has…
Ms Piraye Kuranel Başol  photo Ms Piraye Kuranel Başol Ms. Kuranel Başol is a partner in the banking and finance and…
Mr Nazım O. Kurt  photo Mr Nazım O. Kurt Mr. Kurt is a partner in our real estate and dispute resolution…
Mr M. Mert Oğuzülgen  photo Mr M. Mert Oğuzülgen Mr. Oğuzülgen is a partner in the corporate and M&A and capital…
Mr Deniz Tuncel  photo Mr Deniz Tuncel Mr. Tuncel is a partner in the Corporate and M&A, Data Protection,…
Mr Ufuk Yalçın  photo Mr Ufuk Yalçın Mr. Yalçın is a leader in our Corporate Support, Dispute Resolution, and…
Number of lawyers : 83
World Law Group
International Attorneys Club
International Bar Association
American Bar Association
US European Network
International Law Institute