Sobhani is currently president and global chief creative officer at DDB Worldwide.
US lawsuit accuses company of 'disseminating materially false and misleading statements and/or concealing material adverse facts' about the 'true state of WPP’s media arm' ahead of profit warning in July.
Shares will vest over five-year period.
Entries from Latin America are up by 16%.
Activation features two games based on the history of the LGBTQ+ movement.
Group has shifted towards non-advertising specialisms.
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