Jason would have been 20 or 21 in The lost boys, He was born in June 1966 and The lost boys came out in 1987.
Jason Patric is 45 years old (birthdate: June 17, 1966).
Jason Alexander is 51 years old (birthdate: September 23, 1959).
Jason Sudeikis is 35 years old (birthdate: September 18, 1975).
Jason White is 37 years old (birthdate: November 11, 1973).