A team that creates valuethrough experience and strategy.

CEO & Portfolio Manager
Mehmet Özkaya serves as the CEO of Esas Portföy Yönetimi A.Ş., the entity responsible for Esas’s asset and wealth management services. Prior to his current role, he served as the Chief Strategy Officer at Esas, responsible for business development, corporate strategy, and strategic asset allocation
Mehmet started his career in the World Bank in Washington, DC where he held various positions in Pension Fund Investments, Capital Markets, Structured Financing, Derivatives, and Risk Management groups (1996-2006). In his last role, he led the Global Fixed Income team in the World Bank Pension Fund, overseeing more than USD 7 billion of investments in global capital markets.
After his return to Turkey, he joined the BNP Paribas – TEB Group as the Chief Investment Officer, first in the TEB Asset Management (2006-2010) and then in the TEB A.Ş (2011-2022).
Mehmet earned his PhD degree in International Finance (1999) and MBA degree in Decision Science (1994) from George Washington University in the United States, and his B.S. degree in Computer Engineering (1992) from Boğaziçi University in Turkey.He also holds Capital Markets Board of Turkey Advanced Level and Derivatives licenses.

Board Member
Bora Subaşı serves as a Board Member responsible for Financial Reporting at Esas Portföy Yönetimi A.Ş.
Since joining Esas in 2012, he has been responsible for the establishment, structural organization, and management of the family office.
With over 13 years of experience in family office management, Bora Subaşı possesses deep expertise in developing short- and long-term investment strategies, planning intergenerational wealth transfer, structuring processes professionally, and managing relationships with family members effectively.
Prior to joining Esas, he worked at HSBC Turkey from 2000 to 2010, where he played an active role in the establishment of HSBC Private Banking Turkey and gained significant experience in private banking. Between 2010 and 2012, he served as Senior Private Banking Manager at Citibank Turkey, where he was responsible for establishing the Private Banking Center in Istanbul.
Bora Subaşı holds a degree in Aeronautical Engineering from Istanbul Technical University and is licensed by the Capital Markets Board of Turkey with both Advanced Level and Derivatives certificates.

Deputy General Manager, Portfolio Management
Özgür Sungu is Deputy General Manager responsible for portfolio management at Esas Portföy Yönetimi A.Ş. He previously served as Portfolio Director in Esas’s Wealth Management team.
Before joining Esas in 2020, he managed multi-asset class funds, hedge funds, and private portfolios at İş Asset Management. From 2006 to 2017, he held various roles managing local and global equities, bonds, and commodities across different mutual and pension fund strategies.
Özgür holds a Master’s degree in Finance from Koç University and a Bachelor’s degree in International Finance from Istanbul Bilgi University. He also holds the CMB Advanced and Derivatives licenses.

Deputy General Manager, Marketing & Business Development
Didem Özkanbaş serves as Deputy General Manager responsible for marketing and business development at Esas Portföy Yönetimi A.Ş. Previously, she was Director of Strategy and Business Development at Esas.
She began her career in 1999 at İşbank’s Treasury Division as a Management Trainee, working in the Turkish Lira Money Market, TL/FX, and TL Bonds for 9 years. In 2008, she joined Akbank’s Private Banking division, later managing the Yeşilköy and Nişantaşı branches over an 11-year period.
Didem holds a degree in Business Administration from Bilkent University and the CMB Advanced and Derivatives licenses.

Senior Director, Research
Füsun Hacıeyüpoğlu is Director of Research at Esas Portföy Yönetimi A.Ş. She previously served in Esas’s Wealth Management team.
She began her career as a project assistant at Arçelik in 1998, later working in various roles at Gedik Yatırım’s International Capital Markets and Research departments (1999–2005). Before joining Esas, she spent 11 years at Deniz Yatırım.
Füsun holds a Master’s degree in Financial Economics from Istanbul Bilgi University and a Bachelor’s degree in Industrial Engineering from Yıldız Technical University. She also earned executive education and certifications in Data Science and Artificial Intelligence from the London School of Economics. She holds the CMB Advanced and Derivatives licenses.
Director, Portfolio Management
Duygu Gülçur serves as Director of Portfolio Management at Esas Portföy Yönetimi A.Ş.
She started her career in 2008 at Ashmore Asset Management and later worked in marketing and sales at İş Asset Management and TEB Asset Management.
Duygu holds a degree in Economics from Koç University and holds the CMB Advanced and Derivatives licenses.
Director, Investment Advisory
Duygu Günışık is the Director of Investment Advisory at Esas Portföy Yönetimi A.Ş.
She began her career in 2003 at Citibank and held various Private Banking roles at HSBC, Akbank, and Odeabank.
Duygu earned her undergraduate degree in Economics from Istanbul University and her Master’s in European Union Economics from Galatasaray University. She holds the CMB Advanced and Derivatives licenses and AFP Certified Financial Consultant Level 1 certification.
Senior Manager, Accounting & Operations
Serpil Temurkaynak is Senior Manager of Accounting and Operations at Esas Portföy Yönetimi A.Ş.
She began her career at Yapı Kredi in 2005 and has held client management roles at TEB, Akbank, and Garanti Bank.
Serpil received her bachelor’s degree from Marmara University, Department of Banking and Insurance. She holds the Capital Markets Board Advanced Level and Derivatives licenses.
Manager, Audit & Internal Control
Özlem Kağanoğlu serves as Audit and Internal Control Manager at Esas Portföy Yönetimi A.Ş.
She started her career at TEB in 1995 and has since held internal audit roles at İktisat Bank, Sabancı Holding, Finans Leasing, Deniz Leasing, Emin Group, Pulver Chemicals, and Akiş REIT.
Özlem holds a degree in Business Administration from Istanbul University. She is a Certified Internal Auditor (CIA) and Certified Public Accountant (SMMM), and holds the CMB Advanced and Derivatives licenses.
Manager, Risk Management
Alişan Aydoğdu is the Risk Management Manager at Esas Portföy Yönetimi A.Ş.
He began his career in 2014 at Tacirler Investment as an Account Manager in forex markets and has held roles at Başkent Investment, Denizbank, Deniz Asset Management, and Beylerbeyi Asset Management.
Alişan holds a degree in Capital Markets Supervision and Rating from Kadir Has University and the CMB Advanced and Derivatives licenses.
Manager, Research
Özge Ongun Doğan serves as the Research Manager at Esas Portföy Yönetimi A.Ş.
Before joining Esas, she worked at Ak Asset Management as Assitant Portfolio Manager, where she managed commodity and global equities, pension funds, fund-of-fund portfolios.
Prior to that, between 2012 and 2022, she worked at İş Investment in the International Markets – Equities and Derivatives Department, where she was involved across various roles in global market brokerage, macroeconomic analysis, and market monitoring.
Özge Ongun Doğan holds a Bachelor’s degree in Business Administration from Boğaziçi University. She holds the CMB Advanced and Derivatives licenses.
Assistant Portfolio Manager, Portfolio Management
Baran Turan serves as Assistant Portfolio Manager at Esas Portföy Yönetimi A.Ş.
He began his career in 2017 at Denizbank’s Treasury Division. Baran holds a degree in Finance from the Faculty of Management at Sabancı University.
Investment Advisor
Volkan Taş is an Investment Advisor at Esas Portföy Yönetimi A.Ş.
He began his career in 2014 at QNB Finansinvest in forex and international markets, and later worked in Private Banking at QNB Finansbank.
Volkan holds a degree in Economics from Adnan Menderes University and holds the CMB Advanced and Derivatives licenses.
Specialist, Marketing & Business Development
Arzum Özyiğit is a Specialist in the Marketing and Business Development team at Esas Portföy Yönetimi A.Ş.
She began her career in 2023 in the KYC department at Citibank.
Arzum holds a dual degree in Economics and Business from Istanbul Bilgi University and the London School of Economics.












