Conn. Gen. Stat. § 42a-8-406: Obligation to notify issuer of lost, destroyed or wrongfully taken security certificate.

If a security certificate has been lost, apparently destroyed, or wrongfully taken, and the owner fails to notify the issuer of that fact within a reasonable time after the owner has notice of it and the issuer registers a transfer of the security before receiving notification, the owner may not assert against the issuer a claim for registering the transfer under section 42a-8-404, or a claim to a new security certificate under section 42a-8-405.