Runway Incursion and NASA form

Hi all,

After a short local flight, I landed on 4L at HNL and forgot to hold
short of 4R. After I made the right turn on taxiway Echo from 4L, the
tower (sensing that I was taxiing a bit fast) tells me, in a rather
calm voice, "hold short of 4R!".

By that time, I had already crossed the 4R hold bars. I was not on
runway 4R, just between the hold bars and the runway edge. There was
neither departing nor landing traffic. I apologized, and the tower
told me to contact ground. Never heard from the tower again.

What should I do? Should I fill out the NASA form?

Thanks,
Alex