Cobb began in the role left vacant by Nicole Bardsley last week, after departing Lendi Group as chief growth officer in January.
In March, Mediaweek revealed Supermassive had snared Zambrero's creative account.
“After an orderly transition, it is the right time for me to step down as CEO.”
At Mindshare, Pickering was managing partner on the NAB account for almost five years.
"The board has been supportive through the events of the last month and last few days in particular. But going forward I...
Simon Joyce told Mediaweek: "We needed greater senior leadership in the strategy unit, as opposed to senior PR skills."
"The next step for us is now the work," plus "awards recognition and new business wins."
"There's a lot of client organisations that have flipped themselves on their heads ... I'm not sure the agency world, or the...
"The conditions have not been, or have become incapable of being, satisfied" now Girgis is no longer employed.
Plus: Scale ambitions - "it doesn't need to be 50 people, it might be 12 core, or 15" - the name, and...
The leadership change follows a "thorough review of The Brag Media."
Jadanne Dare held the role until last May, when she moved to KPMG.
Mediaweek broke the news of Derwin's departure from BMF and intention to launch his own shop in April.
Nicholas Gray, Mark Reinke, and Pippa Leary will lead the three new divisions.