To some, it may seem like no big deal, just a move across the street.
But to Putnam Investments CEO Bob Reynolds, the asset manager’s imminent shift of its headquarters — from One Post Office Square to 100 Federal St. — is a major milestone indeed.
“Quite frankly, we’ve always been enamored with the building. It’s the building everyone thinks of (when they think of) the Financial District,” Reynolds said of 100 Federal, the downtown office tower perhaps best known by its nickname,…