What must the principal auctioneer issue for all auctions they conduct?

The principal auctioneer must issue a closing statement for all auctions they conduct to provide a clear and comprehensive summary of the financial aspects of the auction. This closing statement accounts for all sales made during the auction, detailing the total amounts received and any commissions or fees deducted. It serves as a record for both the seller and the auctioneer, ensuring that all parties are informed of the final financial outcome and that the transaction is transparent. This practice helps to maintain trust and professionalism in the auction process while fulfilling legal requirements.

The other options do not capture the essential requirement for finalizing the auction process. An itemized sales receipt is typically provided to bidders after a purchase, and a summary of bidder registrations pertains more to tracking participants rather than closing the auction. A final report detailing auction items may provide useful information but is not required as part of the formal financial documentation that a closing statement represents.