Spyderco knife ID

Can some identify this Spyderco for me? The blade material is M4. I bought it a few years ago and finally got around to using it. I was cutting soft plastic tubing on a plastic cutting board and it picked up some damage. I'm guessing something may be wrong with the heat treat. I want to call Spyderco and see if I can't get the blade replaced. I dont want to remove all that material to get the edge back to normal.