Yannick Bolloré

Under Yannick Bolloré's chairmanship of the supervisory board, Vivendi separated Canal+, Havas and Louis Hachette Group into separately listed companies. Minority shareholders challenged the structure, believing that it allowed the Bolloré family to consolidate control without triggering a mandatory takeover bid and could disadvantage minority investors.

State of the evidence

Documented

Attribution

Command responsibility

After Havas was separately listed in Amsterdam, Yannick Bolloré purchased a personal stake, while Bolloré family companies also increased their holdings. In 2026, these transactions further increased family influence over Havas.

State of the evidence

Documented

Attribution

Personally implicated

US transparency filings and a Guardian investigation showed that Havas Media Germany acted as an intermediary in a campaign funded by an advertising agency working for the Israeli government. A subcontractor created a fake think tank and published large volumes of content optimised for citation by search engines and chatbots on Israel, Gaza and anti-Zionism.

State of the evidence

Documented

Havas Media won a major global contract with Shell while Yannick Bolloré was making climate policy a prominent public priority for the group. Climate activists protested against Havas, and employees reportedly expressed opposition, with some leaving the agency.

State of the evidence

Documented

Attribution

Direct responsibility

Numerous anonymous accounts accused Havas Paris executives of sexist behaviour, inappropriate touching and abusive management practices. Two executives stepped back, and management launched an internal audit, while employee representatives denounced a culture of silence.

State of the evidence

Documented

Growing links between Havas and Vivendi, both under the influence of the Bolloré family, worried some clients. Ubisoft withdrew a media account from Havas, fearing that sensitive commercial information might circulate while Vivendi was seeking control of the video game publisher. A commercial dispute followed.

State of the evidence

Documented

Vivendi purchased approximately 60 % of Havas from Bolloré Group while Vincent Bolloré headed the selling group, exercised significant influence at Vivendi and his son Yannick headed Havas. Industry professionals feared that an agency purchasing advertising space for its clients might favour media outlets within the same group.