HRS §490:7-506
Getting a signature on a document you received
If you receive a paper title document that needs the seller's signature to be valid, you can force them to sign it. The transfer only counts as a full negotiation once they sign.
buyers
The statute, as written — Delivery without indorsement: right to compel indorsement
The transferee of a negotiable tangible document of title has a specifically enforceable right to have its transferor supply any necessary indorsement, but the transfer becomes a negotiation only as of the time the indorsement is supplied.
LawTrove is not legal advice. The summary above is a computer-generated restatement — the authoritative text is the official version linked above.