ACP Holdings (ACGCU) director Sean R. Wallace files initial Form 3

Rhea-AI Filing Summary

ACP Holdings Acquisition Corp. filed an initial Form 3 identifying Sean R. Wallace as a director and reporting person. This filing establishes his status under insider reporting rules and, based on the data provided, does not list any insider share purchases, sales, or other transactions.

Key Terms

Form 3, reporting person, director, ten percent owner

4 terms

Form 3 regulatory

"INSIDER FILING DATA (Form 3):"

Form 3 is the initial public filing that officers, directors and large shareholders must submit to report their ownership of a company’s securities when they become insiders. It acts like an opening inventory sheet that gives investors a starting point to see who holds significant stakes and to spot later trades or potential conflicts of interest, helping assess insider confidence and transparency.

reporting person regulatory

""reportingPersons": [ { "name": "Wallace Sean R.""

director regulatory

""is_director": 1"

ten percent owner regulatory

""is_ten_percent_owner": 0"

Understanding Insider Trading Forms →

SEC Form 3

FORM 3

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

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

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

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1. Name and Address of Reporting Person^*

Wallace Sean R.

(Last) (First) (Middle)

C/O ACP HOLDINGS ACQUISITION CORP.

3131 EASTSIDE STREET

(Street)

HOUSTON TEXAS 77098

(City) (State) (Zip)

UNITED STATES

(Country)

2. Date of Event Requiring Statement (Month/Day/Year)
04/06/2026

3. Issuer Name and Ticker or Trading Symbol
ACP Holdings Acquisition Corp. [ ACGCU ]

3a. Foreign Trading Symbol

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

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

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

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

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

Table I - Non-Derivative Securities Beneficially Owned
1. Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

Remarks:

Excludes securities in which the Reporting Person holds an indirect interest through an ownership interest in the Issuer's sponsor.

No securities are beneficially owned.

	/s/ Sean Wallace	04/16/2026
	** 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 5 (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 3: SEC 1473 (03-26)

FAQ

What does ACP Holdings (ACGCU) Form 3 report for Sean R. Wallace?

The Form 3 identifies Sean R. Wallace as a director and reporting person of ACP Holdings Acquisition Corp. It serves as his initial insider ownership statement and, in the data shown, does not report any insider purchases, sales, or other transactions.

Does the ACP Holdings (ACGCU) Form 3 show any insider trades?

No insider trades appear in the Form 3 data provided. The transaction summary shows zero buy, sell, exercise, gift, tax-withholding, or restructuring entries, indicating this filing functions purely as an initial reporting statement without recorded trading activity.

What insider role does Sean R. Wallace hold at ACP Holdings (ACGCU)?

Sean R. Wallace is reported as a director of ACP Holdings Acquisition Corp. on the Form 3. He is not listed as an officer and is not flagged as a ten percent owner in the structured data included with this filing.

Why is a Form 3 important for ACP Holdings (ACGCU) insiders?

Form 3 is the initial ownership report required for company insiders. It identifies individuals like directors or major holders as reporting persons, creating a baseline so that future Forms 4 or 5 can show changes in their holdings or additional transactions over time.

Does the ACP Holdings (ACGCU) Form 3 include derivative positions?

The derivative summary in the provided data is empty, and the transaction summary lists zero derivative transactions. This means no options, warrants, or other derivative positions are reported for Sean R. Wallace in this particular Form 3 excerpt.