# EDGAR Filing Document

**Accession Number:** 0002082847
**File Stem:** 9999999995-26-000869
**Filing Date:** 2026-3
**Character Count:** 1334
**Document Hash:** a6b9ad0e516d98c843164d08bb6af75b
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**9999999995-26-000869.hdr.sgml**: 20260320

**ACCESSION NUMBER**: 9999999995-26-000869

**CONFORMED SUBMISSION TYPE**: EFFECT

**PUBLIC DOCUMENT COUNT**: 1

**FILED AS OF DATE**: 20260319

**DATE AS OF CHANGE**: 20260320

**EFFECTIVENESS DATE**: 20260319

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Blue Water Acquisition Corp. IV
- **CENTRAL INDEX KEY:** 0002082847
- **STANDARD INDUSTRIAL CLASSIFICATION:** BLANK CHECKS [6770]
- **ORGANIZATION NAME:** 05 Real Estate & Construction
- **EIN:** 000000000
- **STATE OF INCORPORATION:** E9
- **FISCAL YEAR END:** 0331

**FILING VALUES:**
- **FORM TYPE:** EFFECT
- **SEC ACT:** 1933 Act
- **SEC FILE NUMBER:** 333-291959
- **FILM NUMBER:** 26775973

**BUSINESS ADDRESS:**
- **STREET 1:** 15 E. PUTNAM AVENUE
- **STREET 2:** SUITE 363
- **CITY:** GREENWICH
- **STATE:** CT
- **ZIP:** 06830
- **BUSINESS PHONE:** 646-303-0737

**MAIL ADDRESS:**
- **STREET 1:** 15 E. PUTNAM AVENUE
- **STREET 2:** SUITE 363
- **CITY:** GREENWICH
- **STATE:** CT
- **ZIP:** 06830

### UNITED STATES
### SECURITIES AND EXCHANGE COMMISSION
**Washington, D.C. 20549**

## Notice of Effectiveness

**Date:** March 19, 2026

**Time:** 16:00:00

**Form Type:** S-1

---

**CIK:** 0002082847

**Company Name:** Blue Water Acquisition Corp. IV

**File Number:** 333-291959