About Michael Gross (actor)
Michael Edward Gross is an American television, film, and stage actor. He is notable for playing Steven Keaton on the sitcom Family Ties (1982–1989) and survivalist Burt Gummer in the Tremors film franchise, being the only actor to appear in all the films and the television show. Gross was first seen by a broad audience in his role as Steven Keaton in the 1980s sitcom Family Ties; he and his co-star Meredith Baxter, who played his wife Elyse Keaton, were born on the exact same day: June 21, 1947. After the Cubs won the 2016 World Series, Gross suggested his character Burt Gummer switch to a Cubs cap for Tremors: A Cold Day in Hell, replacing the Atlanta Hawks cap he had worn in the first five films of the series.
Biography source: Wikipedia. The profile adds birthday-specific historical context from the Celebs Birthday Today editorial database.