Thanks for Box F, but how do I complete Schedule D; i.e., Cost Basis, Sales, etc. with no 1099 B?

It may take more research on your part.  You will need to know the original purchase date and price.  The purchase price is the basis (plus any additional that you had to pay in fees at purchase or at selling the REIT), then the date of the sale and the sales price.  If the sale price is less than the basis, and the REIT was more than 1 year old, then it will be reported as a long-term capital loss on Schedule D.

I have all the numbers.  It's long term. The 2016 & 17 liquidations result in a $3000 loss. Received $400 as the final liquidation in 2018.  I can't enter a $3000 loss as my cost basis.  Can I enter all 3 liquidations as the "sales"?  My  2018 1099-DIV shows $400 for in Box 9, but there were 2 previous partial liquidations.  The REIT company said to wait to report until the final distribution was made in 2018.

Is this reported on 1099-DIV? or which form?