Section 47-9310 - When filing required to perfect security interest or agricultural lien; security interests and agricultural liens to which filing provisions do not applyA. Except as otherwise provided in subsection B of this section and section 47-9312, subsection B, a financing statement must be filed to perfect all security interests and agricultural liens.B. The filing of a financing statement is not necessary to perfect a security interest: 1. That is perfected under section 47-9308, subsection D, E, F or G;2. That is perfected under section 47-9309 when it attaches;3. In property subject to a statute, regulation or treaty described in section 47-9311, subsection A;4. In goods in possession of a bailee that is perfected under section 47-9312, subsection D, paragraph 1 or 2;5. In certificated securities, documents, goods or instruments that is perfected without filing, control or possession under section 47-9312, subsection E, F or G;6. In collateral in the secured party's possession under section 47-9313;7. In a certificated security that is perfected by delivery of the security certificate to the secured party under section 47-9313;8. In deposit accounts, electronic chattel paper, electronic documents, investment property or letter-of-credit rights that is perfected by control under section 47-9314;9. In proceeds that is perfected under section 47-9315; or10. That is perfected under section 47-9316.C. If a secured party assigns a perfected security interest or agricultural lien, a filing under this chapter is not required to continue the perfected status of the security interest against creditors of and transferees from the original debtor.