PITTSBURGH — Despite having moved away for nearly 20 years, when you’ve called Pittsburgh home for any length of time, two things often happen: You want to come back to raise your children, and you want to be part of something, big or small, that makes it better.

Bill Demchak wanted to do both, and as CEO of PNC Financial Services, he had the ability to make a big impact. Since returning in 2002 to the city where he grew up, he has been doing exactly that, quietly and consistently.