underwriter

noun | \ ˈən-dər-ˌrī-tər \ | un·der·writ·er

1. a : a person (as an individual or a company) who underwrites an insurance policy : insurer

   b : a person who assesses risks to be covered by an insurance policy

2. : a person (as an individual or company) who underwrites a security issue — compare issuer

   Note: The Securities Act of 1933 requires dealers, issuers, and underwriters to file registration statements for the securities that they sell.