I received a first-time OWI over four years ago in Wisconsin, where it is considered a civil and not a criminal charge. I completed all requirements and paid all fines. I did not notify my insurance company, as I assumed they would learn about it from the DMV (and also I was very embarrassed). As I did not request an occupational license while mine was revoked, I never needed SR22 insurance; my usual insurance was considered fine by the state once my license was reinstated.
However, my insurance company never contacted me about it, and my rates have only ever gone up slightly over the past four years (I am uncertain as to why they went up). I am a little worried: is it possible they do not know? Was it my responsibility to tell them? Will they claim I have defrauded them if I place a future claim? What is my best course of action right now?