Marty Chavez has spent five months in lockdown in the mountains of West Massachusetts. However, his trademark beard has not grown to frontiersman proportions. Instead, he is clean-shaven, tanned, relaxed — albeit with more hair than usual.

This is all the more surprising as, since retiring after more than 20 years at Goldman Sachs, where he was chief financial officer, chief information officer and co-head of its hulking securities business, he has taken on four new board positions as well as a teaching job at Stanford University.