Actually, our friends at FinCEN would have you complete the CTR a different way. In
FIN 2006-R003, we're instructed to list the individual (with his/her SSN, DOB, and residence address) in Section A on the front, check "conducted on own behalf" above Section B (leave Section B blank), and complete a second Section A entry on the business, by listing the owner again, adding the DBA name in item 5, supply the business address and the EIN (if one has been assigned) for the business. Back on the front of the form, be sure the "multiple persons" box is checked in item #1.
It is FinCEN's view that the transaction benefits both the owner as an individual and the business, so both are listed. It's the only example I know of where you would list the same individual more than once on a CTR. It's also a bit of tortuous reasoning that arrived at the FinCEN ruling, IMO.