Blue Water Acquisition Corp. IV (BWIV) sponsor reports $2.75M private unit buy

Rhea-AI Filing Summary

Blue Water Acquisition IV LLC, the sponsor of Blue Water Acquisition Corp. IV, reported purchasing 275,000 Class A ordinary shares and 137,500 warrants tied to those shares. The position reflects ownership of 275,000 private units, each consisting of one share and one-half warrant.

Each whole warrant entitles the holder to buy one Class A ordinary share at $11.50 per share, subject to adjustment. The private units were purchased at $10.00 per unit for a total of $2,750,000, giving the sponsor both equity and leveraged upside exposure through warrants.

Insider Trade Summary

2 transactions reported

Net Buy 2 txns

Insider Blue Water Acquisition IV LLC

Role 10% Owner

Bought 412,500 shs ($0.00)

Type	Security	Shares	Price	Value
Purchase	Warrants to purchase Class A ordinary shares	137,500	$0.00	--
Purchase	Class A ordinary shares	275,000	$0.00	--

Holdings After Transaction: Warrants to purchase Class A ordinary shares — 137,500 shares (Direct); Class A ordinary shares — 275,000 shares (Direct)

Footnotes (1)

1. Reflects the 275,000 private units owned by Blue Water Acquisition IV LLC, the Issuer's sponsor. Each private unit consists of one Class A ordinary share and one-half of one warrant, with each whole warrant entitling the holder thereof to purchase one Class A ordinary share for $11.50 per share, subject to adjustment. The private units were purchased at $10.00 per unit for an aggregate purchase price of $2,750,000. The warrants included in the private units 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.

Form 4 Insider Transactions: What Each Field Means →

SEC Form 4

FORM 4

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

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Blue Water Acquisition IV LLC

(Last) (First) (Middle)

15 E PUTNAM AVENUE

SUITE 363

(Street)

GREENWICH CONNECTICUT 06830

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
Blue Water Acquisition Corp. IV [ BWIV ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director	X	10% Owner
	Officer (give title below)		Other (specify below)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
03/23/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Class A ordinary shares	03/23/2026		P		275,000	A	(1)	275,000	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Warrants to purchase Class A ordinary shares	$11.5	03/23/2026		P		137,500		(2)	(2)	Class A ordinary shares	137,500	(1)	137,500	D

Explanation of Responses:

1. Reflects the 275,000 private units owned by Blue Water Acquisition IV LLC, the Issuer's sponsor. Each private unit consists of one Class A ordinary share and one-half of one warrant, with each whole warrant entitling the holder thereof to purchase one Class A ordinary share for $11.50 per share, subject to adjustment. The private units were purchased at $10.00 per unit for an aggregate purchase price of $2,750,000.

2. The warrants included in the private units 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.

	Blue Water Acquisition IV LLC By: /s/ Joseph Hernandez, as Managing Member	03/24/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)

FAQ

What insider transactions did Blue Water Acquisition IV LLC report for BWIV?

Blue Water Acquisition IV LLC, the BWIV sponsor, reported buying 275,000 Class A ordinary shares and 137,500 related warrants. These holdings come from 275,000 private units, each including one share and one-half warrant, giving the sponsor both equity and warrant exposure.

How many private units of BWIV does Blue Water Acquisition IV LLC own?

Blue Water Acquisition IV LLC owns 275,000 private units of BWIV. Each unit consists of one Class A ordinary share and one-half of one warrant, providing 275,000 shares and 137,500 whole warrants tied to the company’s equity.

What is the exercise price of Blue Water Acquisition Corp. IV sponsor warrants?

The sponsor’s warrants have an exercise price of $11.50 per Class A ordinary share. Each whole warrant allows the holder to buy one share at this price, with the terms subject to adjustment under the company’s warrant agreement.

When do the BWIV private placement warrants held by the sponsor become exercisable?

The private placement warrants become exercisable at the later of 12 months after BWIV’s IPO closing and 30 days after completing its initial business combination. They then remain outstanding for up to five years after that business combination, unless earlier redeemed or liquidated.

How much did Blue Water Acquisition IV LLC pay for its BWIV private units?

Blue Water Acquisition IV LLC purchased its 275,000 private units at $10.00 per unit, for a total of $2,750,000. Each unit provides one Class A ordinary share and one-half warrant, combining immediate equity ownership with additional warrant-based upside potential.

What securities are included in the BWIV sponsor’s recent Form 4 filing?

The Form 4 covers warrants to purchase Class A ordinary shares and the underlying Class A ordinary shares themselves. In total, it reflects 137,500 warrants and 275,000 shares held through the sponsor’s 275,000 private units in Blue Water Acquisition Corp. IV.