Sebastian Stan, Maggie Grace, Ellen Burstyn and Mare Winningham are among the thesps lined up to star in the Roundabout Theater Company’s Broadway revival of “Picnic.”Stan (“Political Animals,” “Captain America”) takes on the central role of Hal, the drifter played by William Holden in the 1955 film version of the 1953 play. Grace (“Lost,” “Taken”) plays Madge, the young woman in whom Hal develops an interest. Storyline of the William Inge title, which picked up a Pulitzer the year it bowed, takes place over a single Labor Day weekend in the midwest and follows the waves made by Hal when he comes to town to visit his college buddy. Also among the cast of “Picnic” are Elizabeth Marvel, Madeleine Martin (“Harper Regan”), Ben Rappaport (“Outsourced”) and Reed Birney (“Uncle Vanya,” “Blasted”), the Off Broadway stalwart who hasn’t had a gig on Broadway since his debut there in 1977. Burstyn, who’s appeared Off Broadway in recent years, was last on the Rialto in 2003 outing “Oldest Living Confederate Widow Tells All.” Winningham, meanwhile, makes her Main Stem debut in the show, following Off Broadway stints in plays including “Tribes” and “After the Revolution.” Sam Gold (“Seminar,” “Circle Mirror Transformation”) directs the production, which begins preview Dec. 14 ahead of a Jan. 13 opening at the Roundabout’s American Airlines Theater, where the company’s current production of “Cyrano de Bergerac” is set to wrap up its limited run Nov. 25. Roundabout produces “Picnic” in association with commercial producers Darren Bagert and Martin Massman.