I would have assumed this is related to the change in SEC rules for Pink No Information stocks, but I am not sure if that actually resulted in any delistings.
It is an interesting coincidence that at the same time, U.S. Growth Fund closed on the sale of Local Hive Honey.
KBKCP might be getting redeemed sooner than you know. I'm actually hoping that doesn't happen in 2021 because I own some in a taxable account and my income is already too high this year!