Whiteowl Holdings LLC - 05 Aug 2025 Form 3 Insider Report for Quantumsphere Acquisition Corp (QUMS)

Reporting relationship: 10%+ Owner
Issuer ticker: QUMS
Reported as of: 05 Aug 2025
Net transaction value: $0
SEC form: 3
Accepted by SEC: 11 Aug 2025, 19:01:51 UTC
Source filing: View source filing
Reporting owner signature: /s/ Ping Zhang, Managing Member of Whiteowl Holdings LLC

Key filing fact

Whiteowl Holdings LLC filed Form 3 for Quantumsphere Acquisition Corp (QUMS) on 11 Aug 2025.

Key facts

This page summarizes Whiteowl Holdings LLC's Form 3 filing for Quantumsphere Acquisition Corp (QUMS).
0 reported transactions and 1 derivative row are listed below.
Accepted by SEC: 11 Aug 2025, 19:01.

Change

No earlier filing in this sequence is available for direct comparison.
Current net transaction value: $0.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Official SEC source

Ownership activity is grounded in SEC Form 3 disclosures.

View source filing

Reporting Owners (1)

CIK 0002068027 Primary reporting owner

Whiteowl Holdings LLC

Relationship: 10%+ Owner
Address: WHITEOWL HOLDINGS LLC 1201, ORANGE STREET, SUITE 600, WILMINGTON, DELAWARE
Signature: /s/ Ping Zhang, Managing Member of Whiteowl Holdings LLC
Signature date: 11 Aug 2025

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

QUMSU holding

Ordinary Shares, par value $0.0001 per share

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 3,126,650
Date: 05 Aug 2025
Ownership: Direct
Footnotes: F1

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

QUMSU holding Derivative

Rights

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after
Date: 05 Aug 2025
Ownership: Direct
Underlying class: Ordinary Shares
Underlying amount: 32,664
Exercise price
Footnotes: F2

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 2 footnotes

Footnote F1

Includes 2,898,000 ordinary shares of the Issuer acquired by Whiteowl Holdings LLC prior to the Issuer 's initial public offering. As a result of the underwriter's full exercise of its over-allotment option to purchase 1,080,000 units on August 7, 2025, no such shares are subject to forfeiture. Also includes 228,650 ordinary shares underlying the private placement units sold in a private placement conducted simultaneously with the Issuer 's initial public offering.

Footnote F2

Includes 228,650 rights underlying the private placement units, which were sold in a private placement taking place simultaneously with the Issuer 's initial public offering. Each right is exchangeable for one-seventh of one ordinary share upon the completion of the Issuer 's initial business combination.