Hartmut Riester

Hartmut E. Riester was the CEO of Dentsu Turkey for 14 years, concluding his tenure in 2021.4 He had a total of 27 successful years with the Dentsu Group.4 As the CEO of Dentsu Aegis Network Turkey, Riester played a key role in the acquisition of SesliHarfler, a leading digital agency in Istanbul, which joined Dentsu Aegis Network's global digital agency unit, Isobar.1

During his time as CEO, Riester was involved in strategic decisions and expansions in the Turkish market. He described SesliHarfler as a "leading and highly experienced digital marketing agency" and expressed enthusiasm about the acquisition strengthening Dentsu's position in digital creative and production services in Turkey.1

Currently, Hartmut E. Riester identifies himself as a Managing Partner.2 He describes himself as a hands-on business executive with strong management and leadership skills, focusing on business management and go-to-market strategies.2 His experience as a former Dentsu Country CEO has equipped him with valuable insights into the advertising and digital marketing industry.

Riester continues to share his expertise in business management. Recently, he announced the release of an ebook titled "Generations of Excellence: 5 Steps to Transform and Sustain Your Family Business," indicating his ongoing involvement in business strategy and development.3