TFormers has noticed a Transformers 4 casting call on ExploreTalent.com. Two roles are listed. The first being 15 people needed for supporting roles who are between the ages of 18 and 35. The other listing is for 20 extras, ranging from age 5 to 70. Casting listings on the internet can't always be trusted, so take these with a grain of salt for now, but there is a possibility of these being real.