As I suggested many times - in most cases the owners of TRUSTS are the investors (via preferred shares) in the trust
The issuer creates the trust - puts assets in it - and then sells the ownership (via equity preferred shares in the trust) to investors
It is possible that the parent company was a buyer of such preferred shares in TRusts the bank put together to sell to investors
If such is the case - then WMIH may get some money (or it may go to the LT as the holder of RESIDUAL assets v WMIH which is the new replacement company --- thus its say 2:1 that if the parent company owned any trusts or parts thereof by owning preferred shares in those bank created trusts the money goes to the LT)
Finally - it is beyond me why such ownership of an asset would not have been revealed already