I have several of both the regular size (one-person) and large size (1-2 people) and they do not have grommets. I don't recall the packaging showing grommets, nor do I see that now looking at pictures on their site. I do have a larger, thicker blanket that is heat-reflective and has grommets, but it takes up about 6-7 times the space to store (and it is not made by AMK). So no grommets, but folds small enough that I have them tucked into many pockets/bags where they will be handy.
If the lack of grommets are a deal-breaker for you, remember the trick of tucking a small pebble in a corner, and tying string around that for your stakeout line.