RSHCQ capital loss
At some point, I expect the brokerage firm will remove the shares from your account, and it should show up on the 1099-B form for tax year 2015 as a loss.
I think the process is that after the end of the tax year, at the latest, the brokerage firm will remove the shares from your account, and the 'closing out' of the position is recorded on the 1099-B form to you.
You should not need to do anything since it happened automatically as part of the shares being canceled and then delisted.
If you use any tax software, the transaction should automatically download into it.
Louis J. Desy Jr.