here you go.
Items 2, 3, and 4. Individual/Organization Name. If
the person on whose behalf the transaction(s) is conducted
is an individual, put his/her last name in Item 2, first
name in Item 3, and middle initial in Item 4. If there is no
middle initial, leave item 4 BLANK. If the transaction is
conducted on behalf of an entity, enter the name in Item
2 and leave Items 3 and 4 BLANK.
Item 5. Doing Business As (DBA). If the financial
institution has knowledge of a separate “doing business
as” name, enter it in Item 5. For example, if Smith
Enterprise is doing business as MJ’s Pizza, enter “MJ’s
Pizza” in item 5.
http://www.fincen.gov/forms/files/fin104_ctr.pdf