The move now means that Bollore controls almost 26% of the French advertising firm, following the deal with Sebastian Holdings, which owns 4% of Havas. Shares in Havas rose by 1.26% to €4.84.
At the same time, Agence-France Presse reported details of a meeting held between Bollore and Havas chairman and CEO Alain de Pouzilhac, at which changes to the management were discussed, although there are no details whether they were discussing a potential management shake-up.
Following last Thursday's board meeting, at which he failed to prevent Bollore from taking four seats on the Havas board, De Pouzilhac told staff that he intended to stay on at the company.
Bollore has now reportedly said he was "a bit surprised" at De Pouzilhac's decision to stay -- although he previously said that he wanted him to stay.
The Havas board is now due to meet next Tuesday, the first time since the annual general meeting last week.
Bollore has taken pains to stress that he does not intend to break up Havas and that he is investing in the company for the long term. However, he has a reputation in France as a corporate raider, and has still failed to outline his plans for Havas.
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