Mo. Rev. Stat. § 364.140: Filing of agreement not required for validity against creditors.

No filing of the premium finance agreement shall be necessary to perfect the validity of such agreement as a secured transaction as against creditors, subsequent purchasers, pledgees, encumbrancers, trustees in bankruptcy or any other insolvency proceeding under any law, or anyone having the status or power of the aforementioned or their successors or assigns.