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Melih Poyraz holds a bachelor’s degree in Business Administration from Boğaziçi University, an LL.M. in Economics Law from Galatasaray University, an MBA from MIT Sloan School of Management, and a JD (Juris Doctor) degree from Northwestern University School of Law. He is admitted to law practice in Illinois as of 2014. Melih Poyraz started his professional career as consultant at Ernst & Young and later worked as tax inspector for the Turkish Ministry of Finance. He joined Koç Group in 2014 as Enterprise Risk Management Director at Arçelik. He served as Coordinator at CEO Office in between 2015 to 2020 at Koç Holding. He then worked as Strategy and Business Development Director in between 2021 to 2023 at Koç Holding A.Ş. Melih Poyraz was appointed as General Manager at Aygaz, as of April 17, 2023. Alongside his duties as general manager, Mr. Poyraz serves as President of the LPG Assembly of the Union of Chambers and Commodity Exchanges of Turkey and is also the Vice President of the Board of the World Liquid Gas Association (WLGA).
Gökhan Dizemen’s professional career started in 2002 as an Associate and later Senior Associate at Pricewaterhouse Coopers and continued as Assistant Manager in 2006. After serving as Finance Manager at Societe Generale Consumer Finance in 2007, he joined Koç Holding A.Ş. where he worked as Finance Manager (2008-2010) and Finance Coordinator (2011-2018). He later served as Chief Financial Officer at Tüpraş Trading Ltd. (2018-2020) Gökhan Dizemen has been appointed Assistant General Manager, Finance at Aygaz A.Ş. as of January 2021.
Ayşe Abamor Bilgin began her career in 1998 as a Management Trainee at Aygaz A.Ş. Appointed Supply Manager in 2005, Ayşe Abamor Bilgin served as LPG Supply and Trade Manager from 2008 to 2011. She serves as Director - Supply Chain since January 2012. As of January 2021,she was appointed Assistant General Manager of Technical Affairs and Investments at Aygaz A.Ş.
Ercüment Polat is a graduate of the Turkish Military Academy with a degree in Mechanical Engineering. He completed his EMBA programs at Marmara University in 1999 and at Koç University in 2003. Between 1989 and 1994, he served as a professional officer in various ranks within the Turkish Armed Forces. Ercüment Polat began his career in the private sector in 1995 as a Sales Engineer at Aygaz. He held several positions, including Regional Sales Officer and Regional Sales Manager for Autogas and Bulk Gas. In 2004, he assumed the position of Branch Manager at Akpa A.Ş., a subsidiary of Aygaz, and served as General Manager from 2008 to 2010. From 2010 to 2018, Ercüment Polat worked as the Marketing Director at Aygaz, and in 2018, he was appointed Sales Director for LPG. In February 2021, he was appointed CEO of United Aygaz LPG Ltd., a subsidiary of Aygaz operating in Bangladesh. Ercüment Polat was appointed as Assistant General Manager of Sales, effective from the beginning of 2025.
Şenol Zafer Polat began his career in 1994 as Construction Site Control Engineer and joined Aygaz in 1996 as Project Marketing Engineer. From 1997 to 2010 after serving as Cylinder Gas, Autogas and Bulk Gas Sales Manager in Thrace, İstanbul and Marmara regions he worked as Central Anatolia Sales Manager. From 2010 to 2016 he served first as Mogaz then Aygaz Aegean Region Cylinder Gas Sales Manager. He served as Planning and Business Development Manager of Cylinder Gas between 2016-2018. As of 2018 Polat began to serve as Director of Autogas Sales, as of 2021 February he was appointed as Director of Cylinder Gas Sales.
Hakan Öntürk, who began his career as an Industrial Engineer at Z Management Consulting in 1994, joined Aygaz A.Ş. in 2000 as Çukurova Cylinder Gas Sales Manager. From 2002 to 2006, Öntürk worked as Çukurova Region Bulk Gas and Autogas Sales Represantative and Çukurova Region Cylinder Gas Field Manager. From 2006 to 2013 after serving as Marmara Region Bulk Gas and Autogas Sales Manager, he worked as Kuzey Marmara Otagaz Sales Manager and then Aegean Region Autogas Sales Manager between 2013-2018. As of 2018, Öntürk began to serve as Marmara Region (North) Autogas Sales Manager, as of 2021 February he was appointed as Director of Autogas Sales.
Elifcan Yazgan started her professional career in 2007 as LPG Supply Planning Specialist at Aygaz A.Ş. and went on to serve as LPG Supply and Trade Specialist (2013-2015), Operation and Process Development Manager (2015-2017) and most recently as Business Development Manager (2017-2020). Elifcan Yazgan has been appointed Supply Chain Director as of January 2021.
Didem Kalkan Erdem completed her undergraduate and graduate studies in Industrial Engineering at Istanbul Technical University. She began her career at Aygaz as a Management Trainee in 1996, and from 1997 to 2001, she served as the Bulk Gas Marketing Responsible. In 2001, she joined Aygaz Doğal Gaz, a company initially established as Koç Statoil Gaz, which continued its operations as a subsidiary of Aygaz starting in 2009. She worked as the Sales and Marketing Manager and then as the Sales Manager. In 2019, she assumed as the General Manager of Aygaz Doğal Gaz. In addition to this role, she was appointed as Marketing Director at Aygaz as of the beginning of 2025.
Esra Topkoç started her career at Aygaz A.Ş. in 1998 as a Human Resources Specialist. She was appointed as Human Resources Supervisor in 2006, and served as Human Resources Manager from 2009 to 2020. Topkoç has been appointed as Director - Human Resources as of January 2022.