He will be replaced on an interim basis by Jason Windsor, who is currently the CFO of Aviva’s UK arm.
Windsor will take on the interim CFO role from 1 July. He has worked at Aviva since 2010 and his roles have included chief capital and investments officer and a group executive member.
Stoddard will remain with the company until the end of the year to ensure a smooth transition.
The CFO is the most recent in a wave of departures announced by Aviva since Tulloch took the top job in March.
He dumped Andy Briggs, the chief executive of Aviva’s UK insurance arm, in late April.
Instead he brought in 18-year Aviva veteran and former chief risk officer Angela Darlington to replace Briggs.
Tulloch also added more business unit leaders to the senior leadership team. Aviva Canada chief exec Colm Holmes and Aviva France chief Patriock Dixneuf both joined that group.
At the time Tulloch said the appointments were necessary to bring “greater energy, pace and commercial thinking” to Aviva. Read more: New Aviva boss shakes up leadership team to boost ‘commercial thinking’
The chief executive took the reins promising to deliver more value to shareholders.
Aviva sacked former boss Mark Wilson as Aviva’s share price wallowed at 464p, down from 552p last May.