The term used to describe a security that is in proper form to transfer title, which means that the registered owner has endorsed it. To settle a sale, the certificate must be surrendered on good delivery by the seller. A certificate that bears a share transfer restriction will not constitute good delivery. The term used to describe a security that is in proper form to transfer title, which means that the registered owner has endorsed it. To settle a sale, the certificate must be surrendered on good delivery by the seller. A certificate that bears a share transfer restriction will not constitute good delivery.