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OSK – The Story

From a one-man show to a permanent fixture among the top 10 German PR agencies – OSK’s growth since 1993 has been incredibly dynamic. Today, the agency offers a broad portfolio of communication services at the interface between PR, social media and marketing. We have compiled the most significant stages of our story in the following brief timeline…

1989 1989 - 1993: The beginning
  • First customers: Opel, Mazda, Chrysler, ABB
  • PR work with a strong journalistic emphasis
1993 1993 - 1998: Small to medium-sized specialist agency
  • 1993, GmbH founded
  • Additional customers, greater demands, first international projects
  • 1995, second location in Rüsselsheim
  • Growth from 10 to 30 employees
1998 1998 - 2001: Diversification
  • First major international project “Opel Millennium Express”
  • Addition of new specialist disciplines: architecture, technical planning, hospitality
  • Growth from 30 to 50 employees
  • Expansion from Opel to GM
2001 2001 - 2008: Entry into top ten
  • Lead agency for Mercedes-Benz
  • Strong internationalization of project work (USA, Asia)
  • Addition of Graphic Design department
  • Major international projects for Daimler, Siemens, Tetra Pak …
  • Doubling of team to 100
  • Doubling of fee income
2008 2008 - 2014: Internationalization and digitalization
  • Adoption of internationalization strategy
  • Foundation of OSK Inc., New York
  • Foundation of OSK China, Beijing
  • Addition of Motion Design department and Social Media team
  • Majority acquisition of digital agency Compuccino, Berlin
2014
2014 - 2018: Further agency expansion
  • Lead agency for ZF Friedrichshafen
  • Foundation of OSK office in Friedrichshafen
  • Growth from 140 to more than 250 employees
2018
2018 - 2021: Further agency expansion
  • Confirmed as global lead agency for Mercedes-Benz Cars
  • Expansion of OSK digital agency in Berlin Mitte
  • Won content marketing account for Fraport AG
  • Certification to Consultancy Management Standard III
  • Launch of Digital Public Affairs consultancy offer in Berlin
  • Recognized as "Best Consultant" 2020 and 2021 by "Die Welt"
  • Successfully overcame the Covid challenges of 2020
  • Moved into new Cologne headquarters "Haus der Ideen"
  • 2021 most successful year for new business in agency history
  • OSK joins Omnicom, one of the leading international networks for marketing and communications
2021
2021-2024: Change in leadership after 31 years
  • Awarded “Best Consultants” by “Die Welt” in 2022 and 2023
  • New record for fee revenues in 2023
  • OSK places 3rd in PR Ranking 2023
  • Agency takes holistic approach to strategic consultancy in its core sectors with four units: OSK Move, OSK Tech, OSK Life and OSK Green
  • Five newly formed OSK Studios embody agency’s creative heart
  • OSK CommsTech implements first AI consultancy projects for renowned companies
  • Agency recertification in accordance with Consultancy Management Standard IV
  • Christoph Horn takes over as CEO from founder Oliver Schrott, who assumes role of agency Chairman
2025