Joseph Hernandez - 25 Nov 2025 Form 4 Insider Report for Blue Water Acquisition Corp. III (BLUW)

Role: Chief Executive Officer, Director, 10%+ Owner
Signature: /s/ Joseph Hernandez
Issuer symbol: BLUW
Transactions as of: 25 Nov 2025
Net transactions value: $0
Form type: 4
Filing time: 28 Nov 2025, 17:05:04 UTC
Previous filing: 12 Jun 2025
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Hernandez Joseph	Chief Executive Officer, Director, 10%+ Owner	C/O BLUE WATER ACQUISITION CORP. III, 15 E PUTNAM AVENUE, SUITE 363, GREENWICH	/s/ Joseph Hernandez	28 Nov 2025	0001598384

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	BLUW	Class A ordinary shares	Sale		-430,000	-50%		430,000	25 Nov 2025	See Footnote	F1, F2, F4

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	BLUW	Class B ordinary shares	Other		-6,325,000	-100%		0	25 Nov 2025	Class A Ordinary Shares	6,325,000		See Footnote	F1, F2, F3
transaction	BLUW	Warrants to purchase Class A ordinary shares	Other		-215,000	-100%		0	25 Nov 2025	Class A ordinary shares	215,000		See Footnote	F1, F2, F4, F5

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Joseph Hernandez is no longer subject to Section 16 filing requirements. Form 4 or Form 5 obligations may continue.

Explanation of Responses:

Id	Content
F1	In connection with the Purchase Agreement, dated as of November 25, 2025, by and among the Issuer, Blue Water Acquisition III LLC (the "Original Sponsor") and Yorkville BW Acquisition Sponsor, LLC (the "New Sponsor"), the Original Sponsor sold to the New Sponsor an aggregate of 6,325,000 Class B ordinary shares (the "Founder Shares") and 430,000 private placement units (the "Private Placement Units"), consisting of 430,000 Class A ordinary shares and 215,000 warrants to purchase Class A ordinary shares of the Issuer (the "Private Placement Warrants"). The New Sponsor purchased the Founder Shares and Private Placement Units for an aggregate purchase price of $7,200,000.
F2	The securities are held directly by the Original Sponsor. The Reporting Person is a managing member of the Original Sponsor, therefore, he may be deemed to have beneficial ownership of the securities held directly by the Original Sponsor. The Reporting Person disclaims beneficial ownership of such shares, except to the extent of his pecuniary interest therein.
F3	The Class B ordinary shares have no expiration date and will automatically convert into Class A ordinary shares at the time of the Issuer's initial business combination, or earlier at the option of the holder, on a one-for-one basis.
F4	Represents securities included in the 430,000 Private Placement Units.
F5	Each whole Private Placement Warrant entitles the holder thereof to purchase one Class A ordinary share for $11.50 per share, subject to adjustment. The Private Placement Warrants will become exercisable at the later of 12 months from the closing of the Issuer's initial public offering and 30 days after the completion of its initial business combination and will expire five years after the completion of the initial business combination or earlier upon redemption or liquidation.