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[SCHEDULE 13D] Quantumsphere Acquisition Corp SEC Filing

Filing Impact
(Low)
Filing Sentiment
(Neutral)
Form Type
SCHEDULE 13D

Rhea-AI Filing Summary

Whiteowl Holdings LLC reported beneficial ownership of 3,126,650 Class A ordinary shares of Quantumsphere Acquisition Corp, representing approximately 27.41% of outstanding shares. The position comprises 2,898,000 founder shares (with 378,000 subject to forfeiture if the underwriters' over-allotment option is not exercised in full) and 228,650 ordinary shares issued as Private Placement Units purchased at $10.00 per unit. The Sponsor purchased the Placement Units for $2,286,500 from working capital and holds certain voting and lock-up commitments in favor of any proposed business combination. On July 25, 2025, 83.13% of the Sponsor's interest was transferred to Wealthwise Solutions LTD, making it the Sponsor's majority holder.

Positive

  • Material ownership stake: Reporting Person beneficially owns 3,126,650 shares (27.41%), providing significant voting influence.
  • Private Placement investment: Sponsor purchased 228,650 units at $10.00 per unit (aggregate $2,286,500) using working capital.
  • Contractual commitments: Sponsor agreed to vote shares in favor of a business combination and accepted lock-up and indemnity provisions that support transaction certainty.
  • Registration rights: Sponsor was granted demand and piggyback registration rights, providing potential future liquidity subject to customary conditions.

Negative

  • Founder share forfeiture: 378,000 founder shares are subject to forfeiture if the underwriters' over-allotment option is not exercised in full, reducing Sponsor economics.
  • Change in Sponsor control: Transfer of 83.13% of Sponsor interest to Wealthwise Solutions LTD alters the Sponsor's ownership and may affect governance or strategic intent.
  • Lock-up restrictions: Sponsor agreed not to redeem Founder Shares or Placement Units in certain liquidation or vote scenarios, limiting Sponsor liquidity and flexibility.

Insights

TL;DR: Sponsor holds a material 27.41% stake with lock-up and voting commitments that support deal approvals.

The reporting shows Whiteowl Holdings LLC controls a substantial ownership stake in QUMSU through founder shares and private placement units, aligning significant voting power behind the issuer's potential business combination plans. The Sponsor's voting commitments and indemnity provisions reduce the likelihood of founder-share redemptions that could impede a transaction vote. The Private Placement Units were acquired for $2.29 million from working capital, and registration rights give the Sponsor pathways to liquidity subject to customary limitations. The transfer of 83.13% of Sponsor interest to Wealthwise Solutions LTD changes the Sponsor's ownership structure and could affect governance dynamics.

TL;DR: The Sponsor's commitments facilitate a smoother path to an initial business combination but ownership changes warrant monitoring.

The agreements described—including the Subscription Agreement amendments, Insider Letter voting and redemption restrictions, and the Registration Rights Agreement—create contractual support for completing a business combination by limiting Sponsor-driven redemptions and aligning votes. The conditional forfeiture of 378,000 founder shares ties certain economics to underwriter activity. The July 25, 2025 transfer making Wealthwise Solutions LTD the majority holder of the Sponsor is a notable change in the controlling interest of the Sponsor and should be reviewed for any strategic implications or related-party considerations in a deal context.






If the filing person has previously filed a statement on Schedule 13G to report the acquisition that is the subject of this Schedule 13D, and is filing this schedule because of §§ 240.13d-1(e), 240.13d-1(f) or 240.13d-1(g), check the following box.

The information required on the remainder of this cover page shall not be deemed to be "filed" for the purpose of Section 18 of the Securities Exchange Act of 1934 ("Act") or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes).






SCHEDULE 13D




Comment for Type of Reporting Person:
Includes (i) 2,898,000 ordinary shares of the Issuer, $0.0001 par value ("Founder Shares") as more fully described under the heading "Description of Securities--Founder Shares" in the Issuer's registration statement on Form S-1 (File No. 333-287672), and (ii) 228,650 ordinary shares of the Issuer underlying units (each unit consisting of one ordinary share and one right to receive one-seventh (1/7) of one ordinary share upon the consummation of the Issuer's initial business combination, acquired pursuant to a Private Placement Unit Purchase Agreement by and between Whiteowl Holdings LLC (the "Sponsor") and the Issuer. On July 25, 2025, the Sponsor and its member entered into the First Amendment to the Operating Agreement, whereby 83.13% of the Sponsor's interest was transferred to Wealthwise Solutions Ltd., making it the majority holder of the Sponsor.


SCHEDULE 13D


Whiteowl Holdings LLC
Signature:/s/ Ping Zhang
Name/Title:Ping Zhang/Chief Executive Officer and Chairman
Date:09/15/2025

FAQ

How many shares of Quantumsphere Acquisition Corp (QUMSU) does Whiteowl Holdings LLC beneficially own?

Whiteowl Holdings LLC beneficially owns 3,126,650 ordinary shares, representing approximately 27.41% of outstanding shares.

What comprises Whiteowl's ownership in QUMSU?

The stake includes 2,898,000 founder shares (with 378,000 subject to forfeiture) and 228,650 ordinary shares issued as Private Placement Units.

What did the Sponsor pay for the Private Placement Units?

The Sponsor purchased 228,650 units at $10.00 each, for an aggregate purchase price of $2,286,500, using working capital.

Did the Sponsor change ownership or control recently?

Yes. On July 25, 2025, 83.13% of the Sponsor's interest was transferred to Wealthwise Solutions LTD, making it the majority holder of the Sponsor.

Are there voting or redemption commitments by the Sponsor?

Yes. Under an Insider Letter, the Sponsor agreed to vote in favor of proposed business combinations and not to redeem Founder Shares or Placement Unit shares in specified vote or liquidation scenarios.
QUANTUMSPHERE ACQUISITION CO

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