3m co mmm on wednesday named former att inc t executive anne h chow and edison international ceo pedro j pizarro to its board of directors chow was ceo of att business 3m said its board of directors is now comprised of 13 members up from 11 shares of 3m are down 03 in premarket trades the stock is down 25 in 2023 compared to a 3 rise by the dow jones industrial average djia 