Yep. Left signal when entering then right signal when going to the 3rd exit. The left signal means you’re planning to continue in the roundabout which would be wrong if you’re exiting.

Car position is also a thing. Move to the right side on exit to block traffic behind.

Also on entry: left side of lane turning left, center for straight, right for right.

Idk what the rules are in the US for roundabouts. From what i recall there really aren’t any you’re just expected to use them without training and not crash.

Edit: not sure i would necessarily apply these in the US. You need to drive extremely defensively because someone WILL misinterpret your signal cause they don’t know what’s happening either.