A.Hakan Özman
Chairperson of the Board of GAMA Enerji Representing GAMA Holding A.Åž.
Hakan Özman, who serves as the Vice Chairperson of the Board and Executive Member of GAMA Holding, began his professional career as a Financial Analyst at Koç Holding A.Åž. Joining GAMA in 1992, Özman held various positions until 2012, when he served as the CEO and Vice Chairperson of the Board of GAMA Holding from 2012 to 2018. He earned his bachelor’s degree in Business Administration from Chapman University in 1985 and his master’s degree from the American Graduate School of International Management in 1987. In 1998, he completed the Management Development Program at Harvard University. Özman is also a member of TÃœSÄ°AD (Turkish Industry and Business Association).
Ömer Tunçata
GAMA Enerji Deputy Chairperson of the Board
Ömer Tunçata serves as the Chairperson and Executive Member of the Board of Directors of GAMA Holding. Prior to being elected Chairperson in 2018, he served as a member of the Board of Directors of GAMA Holding between the years of 2010 and 2014. Ömer began his career as an engineer at H. B. Zachry Company in San Antonio, Texas. He then worked at Parsons Brinckerhoff International in New York, New York until which time he joined BDIM, Inc. (Business Development and International Marketing, Inc.) in Washington, DC, a company he eventually bought and renamed Alvensa Corporation. Prior to joining GAMA, Ömer spent twenty five years of his career at Alvensa Corporation serving as the Chairperson and CEO of the group. He graduated with a bachelor’s of science degree in Industrial Engineering from Texas A&M University in 1980.
Elif Ateş Özpak
GAMA Enerji Board Member
Elif Ateş Özpak has over 30 years of professional experience in compliance, governance, mergers and acquisitions (M&A), and private equity. With a proven track record in regulated sectors such as energy, renewables, retail, telecoms, and financial services, Özpak has made significant contributions to risk management, ESG initiatives, and policy development.
She began her career as a Partner at Pekin & Pekin Law Firm, then served as Corporate Legal Counsel and Corporate Governance Secretary to the Board at Turkcell. From 2011 to 2021, she held the role of Partner at Crescent Capital (Turkey). She has also chaired the Sustainability Committee at Arzum Elektrikli Ev Aletleri and currently serves as an IFC Nominee Board Member at GAMA Enerji. As the Founder and Managing Director of Kybele Consulting Limited, Özpak provides consultancy services on governance, strategy, globalization, and sustainability to clients in the UK and emerging markets.
Ä°rem Baysal
GAMA Enerji Board Member
Ä°rem Baysal graduated from the Middle East Technical University (METU) with a degree in Business Administration. She began her career at Ernst & Young as a Senior Auditor and later specialized in financial reporting and strategic planning. In 2004, she joined GAMA Holding, where she held key positions such as Assistant Financial Reporting Manager, Financial Reporting Manager, and Strategic Planning Director. With over 20 years of experience at GAMA Holding, Baysal continues to lead significant projects in her current role as Strategic Planning and M&A Coordinator.
Nazmi Othman
GAMA Enerji Board Member
Nazmi Othman has over 35 years of finance and business experience across industries in the areas of accounting, finance, strategy, investment management, and risk management. His professional journey has been significantly shaped by 20-year tenure at Tenaga Nasional Berhad (TNB), a leading energy utility company in Malaysia listed on the FTSE Bursa Malaysia KLCI, where he held key C-suite and senior leadership roles, including Group Chief Financial Officer, Chief Investment Management Officer and Group Accountant. In his advisory capacity, he played an integral role in shaping strategic decisions, overseeing financial management, and driving initiatives that promote business growth and sustainability.
He is a Fellow and Member of CPA Australia, a member of the Malaysian Institute of Accountants (MIA) and the Malaysian Institute of Certified Public Accountants (MICPA). Additionally, he holds directorship in various subsidiaries (domestic and international) within TNB Group.
Tamer Çalışır
Managing Director & Board Member of GAMA Enerji
Tamer Çalışır currently serves as the General Manager and a Member of the Board of Directors at GAMA Enerji A.Åž. He holds a bachelor’s degree in Mechanical Engineering from Yıldız Technical University and completed the Executive MBA program at Koç University between 2009 and 2010.
He began his career in the energy sector at Aygaz in 2000. In 2008, he joined Zorlu Enerji, where he was responsible for energy trading and power plant optimization management. He gained international experience as the Country Manager of GEN-I Doo, an energy trading company based in Slovenia, before joining GAMA Enerji in early 2013.
In August 2017, he was appointed General Manager of GAMA Enerji, and in October 2019, he also became a Member of the Board of Directors. Çalışır is currently a Board Member of the Energy Traders Association (ETD), where he previously served as Chairperson for two terms, and the Chairperson of the Board at the Electricity Producers Association (EÜD).
Zarihi Hashim
Tenaga Nasional Berhad Chief New Energy Officer & GAMA Enerji Board Member
Encik Mohd Zarihi Hashim plays a pivotal role in the New Energy Division, spearheading the expansion of TNB’s renewable energy ventures, both domestically and internationally.
Before his tenure at TNB, Encik Mohd Zarihi occupied senior positions in investment and private equity firms. He also brings a wealth of experience in management and IT consultancy, garnered from his work with various local and international consultancies.
In the early stages of his career, he served as an engineer at a leading semiconductor corporation.