Based on my understanding from the Form 8937, I suggest entering the sale of all the VALPQ holdings on April 30, 2021, for the market value of the warrants (including the cash in lieu you received) and the purchase of the warrants. The cash in lieu you received should help calculate a cost basis for the warrants received.
Geobrick said: That should work. So if/when the warrants expire without exercising them, how is the remaining loss of from the warrant basis accounted for? A sale of the warrant shares for $0? I'm sure the broker just pulls the shares at that point.