# EDGAR Filing Document

**Accession Number:** 0001915380
**File Stem:** 0001193805-26-000655
**Filing Date:** 2026-5
**Character Count:** 7426
**Document Hash:** 89c3929c214c59b9d9269fa384ba7172
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001193805-26-000655.hdr.sgml**: 20260519

**ACCESSION NUMBER**: 0001193805-26-000655

**CONFORMED SUBMISSION TYPE**: SCHEDULE 13D/A

**PUBLIC DOCUMENT COUNT**: 1

**FILED AS OF DATE**: 20260519

**DATE AS OF CHANGE**: 20260519

**SUBJECT COMPANY**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** dMY Squared Technology Group, Inc.
- **CENTRAL INDEX KEY:** 0001915380
- **STANDARD INDUSTRIAL CLASSIFICATION:** BLANK CHECKS [6770]
- **ORGANIZATION NAME:** 05 Real Estate & Construction
- **EIN:** 880748933
- **STATE OF INCORPORATION:** MA
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** SCHEDULE 13D/A
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 005-93779
- **FILM NUMBER:** 26998583

**BUSINESS ADDRESS:**
- **STREET 1:** 1180 NORTH TOWN CENTER DRIVE SUITE 100
- **CITY:** LAS VEGAS
- **STATE:** NV
- **ZIP:** 89144
- **BUSINESS PHONE:** 408-232-2139

**MAIL ADDRESS:**
- **STREET 1:** 1180 NORTH TOWN CENTER DRIVE SUITE 100
- **CITY:** LAS VEGAS
- **STATE:** NV
- **ZIP:** 89144
**FILED BY**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** National Philanthropic Trust
- **CENTRAL INDEX KEY:** 0001785342

**ORGANIZATION NAME:**
- **EIN:** 237825575
- **STATE OF INCORPORATION:** PA
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** SCHEDULE 13D/A

**BUSINESS ADDRESS:**
- **STREET 1:** 165 TOWNSHIP LINE ROAD, SUITE 1200
- **CITY:** JENKINTOWN
- **STATE:** PA
- **ZIP:** 19046
- **BUSINESS PHONE:** 215-277-3010

**MAIL ADDRESS:**
- **STREET 1:** 165 TOWNSHIP LINE ROAD, SUITE 1200
- **CITY:** JENKINTOWN
- **STATE:** PA
- **ZIP:** 19046

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

## SCHEDULE 13D

### Under the Securities Exchange Act of 1934

**(Amendment No. 1)**

**dMY Squared Technology Group, Inc.**

*(Name of Issuer)*

**Class A common stock, par value $0.0001 per share**

*(Title of Class of Securities)*

**—**

*(CUSIP Number)*

**Christina Hack**<br>Chief Financial Officer<br>165 Township Line Road, Suite 1200<br>Jenkintown PA 19046<br>(215) 277-3010

*(Name, Address and Telephone Number of Person Authorized to Receive Notices and Communications)*

**03/19/2026**

*(Date of Event Which Requires Filing of this Statement)*

| **CUSIP No.** | **—** |

---

| | | | |
|:--|:--|:--|:--|
| 1 | Name of reporting person<br>**National Philanthropic Trust** | Name of reporting person<br>**National Philanthropic Trust** | |
| 2 | Check the appropriate box if a member of a Group (See Instructions)<br>[x] (a)<br>[ ] (b) | Check the appropriate box if a member of a Group (See Instructions)<br>[x] (a)<br>[ ] (b) | |
| 3 | SEC use only | SEC use only | |
| 4 | Source of funds (See Instructions)<br>**OO** | Source of funds (See Instructions)<br>**OO** | |
| 5 | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | |
| 6 | Citizenship or place of organization<br>**PENNSYLVANIA** | Citizenship or place of organization<br>**PENNSYLVANIA** | |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 7 | Sole Voting Power<br>**0.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 8 | Shared Voting Power<br>**0.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 9 | Sole Dispositive Power<br>**0.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 10 | Shared Dispositive Power<br>**0.00** |
| 11 | Aggregate amount beneficially owned by each reporting person<br>**0.00** | Aggregate amount beneficially owned by each reporting person<br>**0.00** | |
| 12 | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | |
| 13 | Percent of class represented by amount in Row (11)<br>**0.00%** | Percent of class represented by amount in Row (11)<br>**0.00%** | |
| 14 | Type of Reporting Person (See Instructions)<br>**CO** | Type of Reporting Person (See Instructions)<br>**CO** | |

---

**Comment for Reporting Person:** This statement on Schedule 13D relates to the Series A common stock, par value $0.0001 per share ("Class A Common Stock"), of dMY Squared Technology Group, Inc. (the "Issuer"). The statement on Schedule 13D originally filed with the Securities and Exchange Commission (the "SEC") by the Reporting Person on September 15, 2025 (the "Schedule 13D") is hereby amended and supplemented to include the information set forth herein. This amended statement on Schedule 13D (the "Schedule 13 Amendment") constitutes Amendment No. 1 to the original Schedule 13D filing and constitutes an exit filing of the Reporting Person in respect of shares of Class A Common Stock. Following the transaction (the "Transaction") described in Item 4 below, the Issuer filed a Form 15 with the SEC to effect the deregistration of the Class A Common Stock. Except as set forth herein, the Schedule 13D is unmodified.

**Item 1. Security and Issuer**

**(a) Title of Class of Securities:**
Class A common stock, par value $0.0001 per share

**(b) Name of Issuer:**
dMY Squared Technology Group, Inc.

**(c) Address of Issuer's Principal Executive Offices:**
1180 NORTH TOWN CENTER DRIVE SUITE 100, LAS VEGAS, NV, 89144

**Item 4. Purpose of Transaction**

On March 19, 2026, Horizon Quantum Holdings Ltd., a Singapore public company limited by shares ("Horizon"), consummated the Transaction with dMY Squared Technology Group, Inc., a Massachusetts corporation (the "Issuer") and various other parties. As part of the Transaction, each outstanding share of Class A Common Stock of the Issuer (excluding any such shares which were redeemed as part of the Transaction) were automatically converted into the right to receive one Class A Share of Horizon (the "Horizon Class A Shares"). The Horizon Class A Shares were registered with the SEC on Form 8-A, effective March 19, 2025. Immediately following the Transaction, (i) there were 31,833,549 Horizon Class A Shares and 19,744,585 Horizon Class B Shares of Horizon issued and outstanding and (ii) the Reporting Person's entire holdings in Horizon securities consisted of 231,520 Horizon Class A Shares which shares it continues to hold as of the time of this Schedule 13D Amendment filing. The Reporting Person holds less than 5% of the Horizon Class A Shares and is not a Schedule 13D filer with regard to its holdings of Horizon Class A Shares.

**Item 5. Interest in Securities of the Issuer**

**(a)**
The responses to Items 7-13 of the cover page to this Schedule 13D Amendment are incorporated herein by reference.

**(b)**
The response to Item 5(a) is incorporated herein by reference.

**(c)**
Except as described in this Schedule 13D Amendment, there have been no transactions effected by the Reporting Person with respect to the Issuer's Class A common stock that were effected during the past sixty (60) days.

### SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

**Reporting Person:** National Philanthropic Trust

**Signature:** /s/ Christina Hack

**Name/Title:** Christina Hack, Chief Financial Officer

**Date:** 05/19/2026