Paul Calello, the chairman of the investment bank at Credit Suisse who is credited with helping steer the Swiss bank through the global financial crisis, has died, according to a family member and Credit Suisse. He was 49 years old.

Calello had been chief executive of Credit Suisse's investment bank for three years. Last year, he stepped aside, at first temporarily, after he began treatment for cancer. Credit Suisse this summer appointed Eric Varvel to permanently take over as head of the firm's investment banking division. Calello became chairman.