brian lesser
Why has GroupM lost its way for so long? The buck stops with WPP
The visceral response to the latest restructuring has been a lament for the way the holding company has moved too slowly and downgraded its agency brands over many years.
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History of GroupM 2003-2025: The world's largest media investment arm
Campaign charts the WPP media arm's history amid ongoing change under global chief executive Brian Lesser.
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GroupM to merge agency brands into single P&L
WPP to 'sunset' agency specific job titles in the shake-up.
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WPP acquires InfoSum to drive AI-based data offer
Brian Lesser, currently global chief executive of Group M, joined from InfoSum in September 2024.
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'We know that we have to be simpler': Brian Lesser lays out GroupM plans
Lesser spoke to investors at WPP’s annual results.
WPP appoints new global CEO of GroupM as Christian Juhl steps down
GroupM leadership shake-up to be effective from September this year.
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