dMY Squared (NYSE: DMYY) converts 1.16M shares before business combination

Rhea-AI Filing Summary

dMY Squared Technology Group, Inc. reported that 1,163,484 shares of its Class B common stock were converted into an equal number of Class A common shares. This was done on a one-for-one basis in connection with and immediately prior to the closing of its business combination with Horizon Quantum Computing Pte. Ltd. and Horizon Quantum Holdings Ltd.

The Class B shares had been held of record by dMY Squared Sponsor, LLC, which now holds 1,163,484 Class A shares after the conversion. The filing notes that Harry L. You, as managing member of the Sponsor, may be deemed to beneficially own these securities, although each reporting person disclaims beneficial ownership except to the extent of any pecuniary interest.

Insider Trade Summary

Net Buyer: 1,163,484 shares

Net Buy 2 txns

Insider dMY Squared Sponsor, LLC, You Harry L.

Role Director, 10% Owner | CEO, CFO & Chairman

Type	Security	Shares	Price	Value
Conversion	Class B Common Stock	1,163,484	$0.00	$0.00
Conversion	Class A Common Stock	1,163,484	$0.00	$0.00

Holdings After Transaction: Class B Common Stock — 0 shares (Direct); Class A Common Stock — 1,163,484 shares (Direct)

Footnotes (3)

1. F1. The shares of Class B common stock, par value $0.0001 per share ("Class B Common Stock"), are convertible into shares of the issuer's Class A common stock, par value $0.0001 per share ("Class A Common Stock"), at the holder's election at any time and automatically at the time of the closing of the issuer's initial business combination, on a one-for-one basis, subject to adjustment pursuant to certain antidilution rights and have no expiration date.
2. F2. In connection with and immediately prior to the closing of the business combination ("Business Combination") between dMY Squared Technology Group, Inc., Horizon Quantum Computing Pte. Ltd., and Horizon Quantum Holdings Ltd., all of the outstanding shares of Class B Common Stock were converted on a one-for-one basis into shares of Class A Common Stock in accordance with the issuer's Amended and Restated Articles of Organization.
3. F3. dMY Squared Sponsor, LLC (the "Sponsor") Sponsor is the record holder of the securities reported herein. Harry L. You is the managing member of the Sponsor and has voting and investment discretion with respect to the securities held of record by the Sponsor. Each of the Sponsor and Mr. You is a "Reporting Person" and may be deemed to beneficially own the securities reported herein; however, each Reporting Person disclaims beneficial ownership of the securities reported herein, except to the extent of such Reporting Person's pecuniary interest therein. Solely for purposes of Section 16 of the Exchange Act, each Reporting Person may be deemed a "director by deputization".

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Form 4 Insider Transactions: What Each Field Means →

Accepted by SEC EDGAR 03/20/2026 - 04:20 PM Learn about SEC filing dates

FAQ

What insider transaction did dMY Squared (DMYY) report in this Form 4?

The Form 4 reports a conversion of 1,163,484 shares of Class B common stock into the same number of Class A common shares. This is a derivative conversion at a one-for-one rate, not an open-market purchase or sale.

Who holds the converted dMY Squared (DMYY) Class A shares?

The converted shares are held of record by dMY Squared Sponsor, LLC. Harry L. You is the managing member and has voting and investment discretion, though each reporting person disclaims beneficial ownership except for any pecuniary interest in the securities.

How many dMY Squared (DMYY) shares were affected by the Class B to Class A conversion?

A total of 1,163,484 shares of Class B common stock were converted into 1,163,484 shares of Class A common stock. After the transaction, 1,163,484 Class A shares are shown as held directly by the reporting holder.

What triggered the share conversion reported by dMY Squared (DMYY)?

The conversion occurred in connection with and immediately prior to the closing of the business combination between dMY Squared Technology Group, Inc., Horizon Quantum Computing Pte. Ltd., and Horizon Quantum Holdings Ltd., as provided in the company’s governing documents.

Is the dMY Squared (DMYY) Form 4 transaction a buy or sell of shares?

The Form 4 reflects a conversion of derivative securities, not a market buy or sell. Class B shares were converted into Class A shares at a one-for-one ratio, with no reported purchase price or sale proceeds in this filing.

Do Harry L. You and the Sponsor fully own the reported dMY Squared (DMYY) shares?

The filing states that dMY Squared Sponsor, LLC is the record holder, and both the Sponsor and Harry L. You may be deemed beneficial owners. However, each disclaims beneficial ownership except to the extent of their pecuniary interest in the securities.

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

X

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^*

dMY Squared Sponsor, LLC

(Last) (First) (Middle)

C/O DMY SQUARED TECHNOLOGY GROUP, INC.

1180 NORTH TOWN CENTER DR, SUITE 100

(Street)

LAS VEGAS NEVADA 89144

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
dMY Squared Technology Group, Inc. [ DMYY ]

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

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
03/19/2026

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

	Form filed by One Reporting Person
X	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 Common Stock	03/19/2026		C(2)		1,163,484	A	(2)	1,163,484	D(3)

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
Class B Common Stock	(1)	03/19/2026		C(2)			1,163,484	(1)	(1)	Class A Common Stock	1,163,484	$0	0	D(3)

1. Name and Address of Reporting Person^*

dMY Squared Sponsor, LLC

(Last) (First) (Middle)

C/O DMY SQUARED TECHNOLOGY GROUP, INC.

1180 NORTH TOWN CENTER DR, SUITE 100

(Street)

LAS VEGAS NEVADA 89144

(City) (State) (Zip)

UNITED STATES

(Country)

Relationship of Reporting Person(s) to Issuer

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

1. Name and Address of Reporting Person^*

You Harry L.

(Last) (First) (Middle)

C/O DMY SQUARED TECHNOLOGY GROUP, INC.

1180 NORTH TOWN CENTER DR, SUITE 100

(Street)

LAS VEGAS NEVADA 89144

(City) (State) (Zip)

UNITED STATES

(Country)

Relationship of Reporting Person(s) to Issuer

X	Director	X	10% Owner
X	Officer (give title below)		Other (specify below)
	CEO, CFO & Chairman

Explanation of Responses:

1. The shares of Class B common stock, par value $0.0001 per share ("Class B Common Stock"), are convertible into shares of the issuer's Class A common stock, par value $0.0001 per share ("Class A Common Stock"), at the holder's election at any time and automatically at the time of the closing of the issuer's initial business combination, on a one-for-one basis, subject to adjustment pursuant to certain antidilution rights and have no expiration date.

2. In connection with and immediately prior to the closing of the business combination ("Business Combination") between dMY Squared Technology Group, Inc., Horizon Quantum Computing Pte. Ltd., and Horizon Quantum Holdings Ltd., all of the outstanding shares of Class B Common Stock were converted on a one-for-one basis into shares of Class A Common Stock in accordance with the issuer's Amended and Restated Articles of Organization.

3. dMY Squared Sponsor, LLC (the "Sponsor") Sponsor is the record holder of the securities reported herein. Harry L. You is the managing member of the Sponsor and has voting and investment discretion with respect to the securities held of record by the Sponsor. Each of the Sponsor and Mr. You is a "Reporting Person" and may be deemed to beneficially own the securities reported herein; however, each Reporting Person disclaims beneficial ownership of the securities reported herein, except to the extent of such Reporting Person's pecuniary interest therein. Solely for purposes of Section 16 of the Exchange Act, each Reporting Person may be deemed a "director by deputization".

	/s/ Harry L. You, Name: Harry L. You, Title: Managing Member	03/20/2026
	/s/ Harry L. You	03/20/2026
	** 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)