Catlin said the four hurricanes that devastated Florida would cost it $75m, $25m more than it originally estimated.
In a statement the company said as more information became available and planning costs were assessed it had been able to make a more considered estimate.
It said: “The higher estimate is primarily attributable to delayed notification of losses related to energy installations in the Gulf of Mexico caused by Hurricane Ivan.
“This estimate is subject to change, either upwards or downwards, as further information becomes available to the group.”
