"Do I own shares here?"
When the company went public, the entire workforce including managers, kitchen workers, servers.. ect.. were given stock. This includes the JAX, PITT, and INDI locations. The number of shares were dependent on what your position was/ how much you made. I cant give you a number myself, but it wasn't anything significant.
What we did not know until about a year later was that we were not allowed to sell the shares or keep them if we left the company. Once we found that out, no one really cared because the stock was worthless at this point.