After months of pressure, the chief executive of Nine Entertainment Mike Sneesby has announced he's leaving the company.

Mr Sneesby's departure comes after major cultural issues at Nine including allegations of sexual harrassment by former staff and the controversial exit of Nine's chairman, the former federal Treasurer Peter Costello.

So did Mike Sneesby leave voluntarily or was he pushed?

Sharemarket activist Stephen Mayne tells me either way, Mr Sneesby would have known his time was up.

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