I received a cash settlement after the Express Scripts stock I owned was purchased by Cigna. There is no cost basis reported on my 1099B, and I'm not sure what to put.

I received a cash settlement after the Express Scripts stock I owned was purchased by Cigna. There is no cost basis reported on my 1099B, and I'm not sure what to put. My turbotax app has separated my sale into two different sales for some reason.