grounding question – hd antenna

I put up a small HD antenna (Clearstream 2v) on the side of the house. Its has a small mast and bracket similar to what you see on a dish network type dish.

The coax connects in the demarc box on the side of the house into a grounding block that is connected to the GEC as it should be.

The mast though doesn’t have a wire attached. The manufacture does not call for one. Nor have I seen a second wire for the antenna itself in photos online.

In general, I have never seen a second wire on small satellite dishes either….

So does the mast/antenna need grounding or is the one in the demarc/grounding block sufficient?