- 1926 Creation of Publicis by Marcel Bleustein-Blanchet
- 1970 Initial public offering of Publicis on the Paris Stock Exchange
- 1987 Management Board and Supervisory Board Maurice Lévy Chairman of the Management Board
- 2000 Acquisition of Saatchi & Saatchi (United Kingdom)
- 2001 Establishment of Zenith Optimedia
- 2002 Acquisition of Bcom3 (United States)
- 2006 Acquisition of Digitas (United States)
- 2009 Acquisition of Razorfish (United States)
- 2015 Acquisition of Sapient (United States)
- 2016The Power of One
- 2017 Maurice Lévy Chairman of the Supervisory Board Arthur Sadoun Chairman of the Management Board
- 2019 Acquisition of Epsilon (United States)
- 2023 The Groupe has the highest market capitalization in the industry
- 2024