Erol Bilecik was born in 1962 in Antakya. He completed his primary, secondary and high school education in his hometown. He graduated from Istanbul Technical University with a Bachelor of Science in Computer Engineering in 1987 as one of the first computer engineers in Turkey.

In 1989, Erol Bilecik founded İndeks Bilgisayar A.Ş. and became the CEO of the company. With a mission to be a technology product supply centre for computer companies throughout Turkey, İndeks Bilgisayar A.Ş. has been offering the products of more than 200 global brands to individual and business consumers in Turkey through more than 8,000 business partner channels.

Erol Bilecik served as the president of TÜBİSAD (Informatics Industry Association of Turkey), one of the oldest non-governmental institutions in Turkish computer industry between 2002 and 2005, and ITU Alumni Council and ITU Alumni Association between 2010 and 2014. He has completed his assignment as a President of TÜSİAD (Turkish Industry and Business Association) which he has carried on since Jan 12 2017, with the General Assembly dated 20.02.2019.

He has been a board member at Fenerbahçe Sports Club since June 5th 2018. As of 4th September 2020 he has been appointed to a Vice President and continues his responsibilities at Fenerbahçe Sports Club.

The Grand National Assembly of Turkey honoured Erol Bilecik with the Meritorious Service Medal in 15 July 2010, for his support and contribution to the field of education.

Mr. Bilecik is married and has two children.

Born in Samsun in 1952, Atilla Kayalıoğlu graduated from Boğaziçi University Department of Mechanical Engineering in 1974, and then completed his master's degree in Syracuse University Department of Industrial Engineering. He worked in various positions at IBM Turk between 1980 and 1999 and joined Index AŞ in 1999 after working as Global Services Manager. Kayalıoğlu is a Member of the Board of Directors of Index AŞ, Vice Chairman of Neteks AŞ, Board of Directors of Datagate AŞ, İnfin AŞ and Teklos AŞ. After serving as the General Manager of Index AŞ, since September 5, 2017 Atilla Kayalıoğlu has been the Vice Chief Executive Officer of Index Grup Companies. Atilla Kayalıoğlu also continues to serve as a Member of the Board of Directors of TUBISAD Informatics Industry Association. Atilla Kayalıoğlu is married, has two children and speaks English.

Born in 1965, Salih Baş graduated from Anadolu University Department of Business Administration. He has been working at Index Grup since 1990.

He first served as Deputy General Manager in Charge of Financial Affairs of İndeks Bilgisayar AŞ and was appointed as Deputy Chairman of Board of Directors and General Manager of Datagate AŞ in 2003. He currently serves as Deputy Chairman of the Board of Directors of İndeks Bilgisayar AŞ, Teklos AŞ, İnfin AŞ and Desbil AŞ, which are among the group companies, and as Member of Board of Directors of Despec AŞ, Neotech AŞ ve Neteks AŞ. Salih Baş is married and has 1 child and speaks English.

Born in Giresun in 1965. He completed his primary, secondary and high school education in Bulancak and graduated from Marmara University, Faculty of Economic and Administrative Sciences in 1987. He began to work at the accounting department of Yücelen İnşaat A.Ş. in 1987 and soon was appointed as the Financial Affairs Manager of this company, which he continued until 2000. He began to work as the Financial Affairs Director at İndeks Bilgisayar AŞ in September 2000. In 2003, he was appointed Deputy General Manager in Charge of Financial Affairs of the company. He currently serves as Member of Board of Directors of İndeks Bilgisayar AŞ as well as the group companies Datagate AŞ, Despec AŞ, Neteks AŞ and Teklos AŞ. He has been an Independent Accountant and Financial Advisor since 1985 and is a member of Istanbul SMMMO (Chamber of Independent Accountants and Financial Advisors of Istanbul). He has the title of Independent Auditor. He is married with two children.

Born in Ankara in 1977, Banu Sürek graduated from Middle East Technical University (METU), Department of Business Administration in 1999 and started her professional career at Garanti Bank. She worked as portfolio manager at Garanti Bank from September 1999 to February 2002. Sürek studied Marketing Management at CUNY Zicklin School of Business in the United States from February 2002 to February 2003. Between February 2003 and November 2003, she served as Finance Officer of İndeks Bilgisayar AŞ. She worked as Financial Affairs Manager of Datagate Bilgisayar AŞ between November 2003 and May 2007. She worked at the group as the Marketing Manager of Datagate Bilgisayar AŞ between May 2007 and June 2011 and between February 2015 and July 2016. Sürek worked as the Deputy General Manager of İndeks Bilgisayar AŞ starting July 2016, and then she was appointed General Manager of İndeks Bilgisayar AŞ on September 5, 2017. Banu Sürek is the mother of 2 children and speaks English.

Born in Susurluk-Balıkesir in 1968, Erhan Doğan is one of the first graduates of Istanbul Atatürk Science High School and he completed his undergraduate education at Boğaziçi University, Department of Computer Engineering. He started his business life as a Software Developer at MoonStar Software Company during his university years and started to work at Karma Bilgisayar in 1990. Doğan started to work as the Founding Partner and General Manager of Atom Elektronik AŞ in 1992, and then he worked as the person in charge of the sales and marketing activities of Network and Security solutions at İnternet İletişim Teknoloji AŞ in 1993. In 1996, he continued his career as the Founding Partner and Sales Manager of Neteks AŞ. Doğan took an active role in the integration of Netex AŞ into Index Grup in 2001 and in the management of partnership processes with Westcon Group, one of the world's largest value-added distributors in 2007, and worked as General Manager of Netex AŞ within Index Grup until 2012. Doğan became Deputy General Manager of İndeks Bilgisayar, one of the Index Grup companies in 2013, and was appointed General Manager of Artım Bilişim AŞ, one of the group companies, on November 1, 2016. He has been serving as the General Manager of Netex AŞ since November 2, 2020. Erhan Doğan is married, has a child and speaks English.

Born in Istanbul in 1974, Emrah Küçükgirgin graduated from Istanbul Technical University, Department of Metallurgical and Materials Engineering in 2000. He started his career as an MRP Consultant at Dolunay Yazılım in 2004. Emrah Küçükgirgin joined Despec Bilgisayar in 2006, worked as product manager, retail sector manager, marketing, business development manager and deputy general manager, until he became the General Manager of Despec Bilgisayar in 2016. He is married and has a boy and a girl. He is actively engaged in triathlon sports and regularly runs marathons.

Born in Erzincan in 1973, Çetin Ekinci graduated from Kabataş High School in 1990. Ekinci completed his associate degree in the Mathematics Department of Istanbul University in 1995 and continued his undergraduate education in Anadolu University Department of Public Administration. Ekinci started his working life in the accounting department of İndeks Bilgisayar AŞ in 1990, where he worked as the Planning Manager in the period of 1997 - 2002 and as Logistics Manager in the period of 2002 – 2014. He has been working as the General Manager of Teklos AŞ since March 2014.

Çetin Ekinci is married and has 2 children.

Born in Istanbul in 1990, Kaan Bilecik graduated from Üsküdar American High School and then from Koç University, Department of Economics in 2014. Bilecik completed the digital marketing certificate program at the University of California, Los Angeles (UCLA) in 2015, then has undertaken important duties and responsibilities at many points of Index Grup companies after his education life. At the General Meeting of 2021, he was elected as a Member of the Board of Directors of Index AŞ, Datagate AŞ and Despec AŞ, which are publicly traded Index Grup companies. Bilecik has been working as Index AŞ Sales and Business Development Director as of July 1, 2021.

Kaan Bilecik speaks English as a foreign language.