brian lesser
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3 days ago
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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4 days ago
GroupM to merge agency brands into single P&L
WPP to 'sunset' agency specific job titles in the shake-up.
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May 6, 2025
WPP set to drop GroupM brand in media shake-up
WPP media arm to change name as part of ongoing restructure.
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Apr 4, 2025
WPP acquires InfoSum to drive AI-based data offer
Brian Lesser, currently global chief executive of GroupM, joined from InfoSum in September 2024.
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Mar 3, 2025
'We know that we have to be simpler': Brian Lesser lays out GroupM plans
Lesser spoke to investors at WPP’s annual results.
Jul 18, 2024
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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