Assignee Signature in Purchase & Sales Agreement?

[Shannon V.]

Hello, 

Does there need to be an assignee signature line on the current purchase and sales agreement I have with the owner (seller)? I am not a realtor. One guy mentioned to me he does this because Ohio is a disclosure state, however I have seen other guys make this contract without the assignee signature line on the original P&S agreement with the owner (seller).

And conversely, does there need to be a line for the owner on the assignment contract the wholesaler has with the end-buyer? One guy mentioned to me he does this because Ohio is a disclosure state, however I have seen other guys make this contract without the owner’s signature. 

What is legally required in the state of Ohio?