 Shares of Photronics Inc. PLAB, 3.80 surged 5.5 in premarket trading Wednesday, after the semiconductor and flat panel display company reported fiscal fourth-quarter profit and revenue that rose above expectations and provided an upbeat outlook for the current quarter. Net income for the quarter to Oct. 31 rose to 19.8 million, or 33 cents a share, from 6.5 million, or 10 cents a share, in the year-ago period. 