Blue Water Acquisition Corp. IV

We are a blank check company incorporated on August 1, 2025 as a Cayman Islands exempted company with no material operations of our own and formed for the purpose of effecting a merger, amalgamation, share exchange, asset acquisition, share purchase, reorganization or similar business combination with one or more businesses, which we refer to throughout this prospectus as our initial business combination. We have not selected any business combination target and we have not, nor has anyone on our behalf, initiated any substantive discussions, directly or indirectly, with any business combination target. However, our management team has previously engaged in discussions with potential business combination targets in their capacity as previous officers of Blue Water Acquisition Corp. III (“Blue Water III”), prior to their resignation in November 2025 upon the consummation of the sale of all interests the management team and directors held in Blue Water III, through the sponsor of Blue Water III, to a new sponsor. We may pursue business combination targets that have previously been in discussions with our management team during the time they served as Blue Water III’s management team. Further, while we may pursue an acquisition opportunity in any business, industry, sector or geographical location, we intend to focus on high-potential companies in the biotechnology, healthcare and technology sectors. Our mission is to leverage our management team’s extensive expertise and deep in

Current securities

1. Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory ArrangementsAug 18, 2026
2. 10-Q filingMay 15, 2026
3. Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory ArrangementsMay 14, 2026
4. Other EventsMay 6, 2026
5. 425 filingApr 28, 2026