First, you have not been "found" to not be at fault--your own insurance company's determination is not legally binding on anyone; it's just their opinion. If you are sued by the other side, they could certainly win, regardless of what your insurer thinks. (The good news is that since you have insurance, your insurer should, if you are sued, step in to defend you.)You do NOT have to fill out the form or report just because the other side asked you--not unless and until you are sued and they use formal court processes (such as written interrogatories) to get the information. If you are sued, however, they can get much or all of this information from you.There is no way to definitively answer the question about the trust, since it depends on the nature of the trust, when and how and by whom it was set up, etc. If it gets to you being sued, you should consult with an attorney on this question, bringing with you the documents establishing the trust and all information relating to it.