Phyllis Barber Highmark Phyllis is a native Pittsburgher and returned home in 2000 after living in Dublin, Ireland. She has led Highmark’s sustainability initiatives since 2007, but her interest in environmental issues goes back to childhood. Phyllis shares “when I have free time, I love to be in my garden planting and weeding, followed by the kitchen throwing together whatever ingredients I have from there and my CSA farm share.”