Hollywood Pictures has upped three exex — Scott Immergut, Gail Lyon and Jay Stern — to vice presidents of production.Immergut has been a creative executive at Hollywood Pictures since 1989. He previously was an associate editor at Premiere magazine. Lyon has been director of production at the company since November 1992. Before that, she worked at Disney Pictures and previously was a veepee of development for Silver Pictures at Warner Bros. Stern started at Hollywood Pictures in 1989 as a creative executive. Previously, he served for a year as director of development with Michael Peyser.