Thank you George4Tacks for your response.  

Would I report the first sale in 2020 even if this is all part of one exchange?

The problem is that the two purchases were $575,000 and $70,000 and the first sale was $251,200 all of which took place in 2020.  The subsequent sales in 2021were for $400,000.

I thought that all 3 sales would be reported in 2021 since the exchange closed in 2021.

Yes, an exchange accommodator was appropriately used for these sales/purchases.

Thank you again!