The Swiss-based insurance giant appoints former AON affinity executive Ulisses Soares.
Caixa's 8.9% stake is worth around US$655mn based on the current price of IRB's shares.
The country has been working with the regional Central American parliament to shore up its cyber defenses.
Support from congressional leaders will be key in securing legislative passage this year of the unpopular pension reform.
The goal is to speed up compensation, including insurance payouts, to avoid the delays seen in payments related to the similar 2015 Samarco dam disaster.