Alaska Notice of Filing, SHC-1605, is a document that is required by the state of Alaska for certain types of business transactions. This document is used to inform the Secretary of State that a certain document has been filed with the office. This document must be filed in order to provide a public record of the transaction. The types of documents that require an Alaska Notice of Filing, SHC-1605, include corporate filings, limited partnership filings, and UCC filings. This document must be signed by the authorized representative of the company and submitted to the Secretary of State office.