I think the market will hammer them if the name CEO before the deal.. IOC said that they will have a done deal BEFORE they name CEO. They say this is a FIVE year plan with EXXON and shareholder value is important. Name a CEO and they go down further. Only bc it shows IOC is up to the same antics. typical BS if they name. You will see $60's ($67-69) very easily.
IOC is highly unlikely to name a new CEO before the AGM for another reason.
Typically, IOC doesn't want to be strongly questioned on such announcements and tries to delay that as long as possible. By naming the new CEO after the AGM -- and after the deal announcement -- they can delay questioning on the CEO until the next earnings CC in August, if then.
Presumably, a new CEO would go on a tour, conducted by WA, to be introduced to key players before having to face much scrutiny by the unwashed public.