Blue Water Acquisition Corp. III issued an Amended and Restated Working Capital Note to its Sponsor, Yorkville BW Acquisition Sponsor, LLC, on August 11, 2026. The Sponsor advanced an additional $250,000 for working capital, bringing the aggregate principal amount of the convertible unsecured promissory note to $750,000. This new note supersedes a prior $500,000 note issued on January 26, 2026. The balance bears no interest and is payable upon the earlier of the consummation of an initial business combination or the effective date of winding up. At the Sponsor's election upon business combination completion, the principal converts into units at $10.00 per unit, with a maximum conversion potential of 75,000 New Units. Each unit comprises one Class A ordinary share and one-half of one redeemable warrant exercisable at $11.50 per share. Blue Water Acquisition Corp. III is a blank check company organized to effect a merger, capital stock exchange, asset acquisition, or similar business combination with one or more businesses.