# EDGAR Filing Document

**Accession Number:** 0002087954
**File Stem:** 0001104659-25-095926
**Filing Date:** 2025-10
**Character Count:** 14248
**Document Hash:** 6d2449e597575634e86518b4c5967c94
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001104659-25-095926.hdr.sgml**: 20251002

**ACCESSION NUMBER**: 0001104659-25-095926

**CONFORMED SUBMISSION TYPE**: SCHEDULE 13D

**PUBLIC DOCUMENT COUNT**: 2

**FILED AS OF DATE**: 20251002

**DATE AS OF CHANGE**: 20251002

**SUBJECT COMPANY**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Solana Co
- **CENTRAL INDEX KEY:** 0001610853
- **STANDARD INDUSTRIAL CLASSIFICATION:** ELECTROMEDICAL & ELECTROTHERAPEUTIC APPARATUS [3845]
- **ORGANIZATION NAME:** 08 Industrial Applications and Services
- **EIN:** 364787690
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** SCHEDULE 13D
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 005-89397
- **FILM NUMBER:** 251367380

**BUSINESS ADDRESS:**
- **STREET 1:** 642 NEWTOWN YARDLEY ROAD
- **CITY:** NEWTOWN
- **STATE:** PA
- **ZIP:** 18940
- **BUSINESS PHONE:** 215-944-6100

**MAIL ADDRESS:**
- **STREET 1:** 642 NEWTOWN YARDLEY ROAD
- **CITY:** NEWTOWN
- **STATE:** PA
- **ZIP:** 18940

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** HELIUS MEDICAL TECHNOLOGIES, INC.
- **DATE OF NAME CHANGE:** 20180525

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** HELIUS MEDICAL TECHNOLOGIES, INC
- **DATE OF NAME CHANGE:** 20180517

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** HELIUS MEDICAL TECHNOLOGIES, INC.
- **DATE OF NAME CHANGE:** 20140613
**FILED BY**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Fusion Summer Ltd
- **CENTRAL INDEX KEY:** 0002087954

**ORGANIZATION NAME:**
- **EIN:** 000000000
- **STATE OF INCORPORATION:** E9
- **FISCAL YEAR END:** 1231

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

**BUSINESS ADDRESS:**
- **ADDRESS IS A NON US LOCATION:** YES
- **STREET 1:** WALKERS CORPORATE LIMITED
- **STREET 2:** 190 ELGIN AVENUE
- **CITY:** GEORGE TOWN
- **NON US STATE TERRITORY:** GRAND CAYMAN
- **PROVINCE COUNTRY:** E9
- **ZIP:** KY1-9001
- **BUSINESS PHONE:** 85239598000

**MAIL ADDRESS:**
- **ADDRESS IS A NON US LOCATION:** YES
- **STREET 1:** WALKERS CORPORATE LIMITED
- **STREET 2:** 190 ELGIN AVENUE
- **CITY:** GEORGE TOWN
- **NON US STATE TERRITORY:** GRAND CAYMAN
- **PROVINCE COUNTRY:** E9
- **ZIP:** KY1-9001

## Exhibit 99.1

**Exhibit 99.1**

**Joint Filing Agreement**

In accordance with Rule 13d-1(k) promulgated under the Securities Exchange Act of 1934, as amended, the undersigned hereby agree to the joint filing with all other Reporting Persons (as such term is defined in the Schedule 13D referred to below) on behalf of each of them of a statement on Schedule 13D (including amendments thereto) with respect to the Class A Common Stock, $0.001 par value per share, of Helius Medical Technologies, Inc., a Delaware corporation, and that this Agreement may be included as an exhibit to such joint filing. This Agreement may be executed in any number of counterparts, all of which taken together shall constitute one and the same instrument.

IN WITNESS WHEREOF, the undersigned hereby execute this Agreement as of October 02, 2025.

---

| | |
|:---|:---|
| **FUSION SUMMER LIMITED** | **FUSION SUMMER LIMITED** |
| By: | /s/ CHEE Choon Wee |
| Name: | CHEE Choon Wee |
| Title: | Director |
| **CHEE Choon Wee** | **CHEE Choon Wee** |
| /s/ CHEE Choon Wee | /s/ CHEE Choon Wee |

---

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

## SCHEDULE 13D

### Under the Securities Exchange Act of 1934

**Helius Medical Technologies, Inc.**

*(Name of Issuer)*

**Class A Common Stock, $0.001 par value per share**

*(Title of Class of Securities)*

**42328V876**

*(CUSIP Number)*

**CHEE Choon Wee**<br>C/O HELIUS MEDICAL TECHNOLOGIES, INC.<br>642 NEWTOWN YARDLEY RD #100<br>NEWTOWN PA 18940<br>(215) 944-6100

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

**09/18/2025**

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

| **CUSIP No.** | **42328V876** |

---

| | | | |
|:--|:--|:--|:--|
| 1 | Name of reporting person<br>**Fusion Summer Limited** | Name of reporting person<br>**Fusion Summer Limited** | |
| 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>**PF** | Source of funds (See Instructions)<br>**PF** | |
| 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>**CAYMAN ISLANDS** | Citizenship or place of organization<br>**CAYMAN ISLANDS** | |
| 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>**6830402.00** |
| 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>**6830402.00** |
| 11 | Aggregate amount beneficially owned by each reporting person<br>**6830402.00** | Aggregate amount beneficially owned by each reporting person<br>**6830402.00** | |
| 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>**17.0%** | Percent of class represented by amount in Row (11)<br>**17.0%** | |
| 14 | Type of Reporting Person (See Instructions)<br>**CO** | Type of Reporting Person (See Instructions)<br>**CO** | |

---

**Comment for Reporting Person:** Note to Rows 8, 10 and 11: Consists of 6,830,402 shares of Class A Common Stock (the "Common Stock") held directly by Fusion Summer Limited and acquired pursuant to the Securities Purchase Agreement as further described in Item 3 and Item 6.

Note to Row 13: The percentage of beneficial ownership is calculated based on 40,295,612 shares outstanding as of September 24, 2025 (which number was provided by the Issuer to the Reporting Persons).

| **CUSIP No.** | **42328V876** |

---

| | | | |
|:--|:--|:--|:--|
| 1 | Name of reporting person<br>**CHEE Choon Wee** | Name of reporting person<br>**CHEE Choon Wee** | |
| 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>**PF** | Source of funds (See Instructions)<br>**PF** | |
| 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>**N8** | Citizenship or place of organization<br>**N8** | |
| 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>**6830402.00** |
| 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>**6830402.00** |
| 11 | Aggregate amount beneficially owned by each reporting person<br>**6830402.00** | Aggregate amount beneficially owned by each reporting person<br>**6830402.00** | |
| 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>**17.0%** | Percent of class represented by amount in Row (11)<br>**17.0%** | |
| 14 | Type of Reporting Person (See Instructions)<br>**IN** | Type of Reporting Person (See Instructions)<br>**IN** | |

---

**Comment for Reporting Person:** Note to Rows 8, 10 and 11:  Consists of (6,830,402 shares of Class A Common Stock (the "Common Stock") beneficially owned by Mr. CHEE, who is the ultimate controlling person of Fusion Summer Limited.

Note to Row 13: The percentage of beneficial ownership is calculated based on 40,295,612 shares outstanding as of September 24, 2025 (which number was provided by the Issuer to the Reporting Persons).

**Item 1. Security and Issuer**

**(a) Title of Class of Securities:**
Class A Common Stock, $0.001 par value per share

**(b) Name of Issuer:**
Helius Medical Technologies, Inc.

**(c) Address of Issuer's Principal Executive Offices:**
642 Newtown Yardley Road, Suite 100, NEWTOWN, PA, 18940

**Item 4. Purpose of Transaction**

The Reporting Persons acquired the securities of the Issuer for investment purposes. The Reporting Persons intend to continuously review their investment in the Issuer.

The transactions reported herein were effected in connection with a private placement financing transaction by the Issuer (the "PIPE Transaction"). In connection with the PIPE Transaction, Mr. CHEE was appointed to serve as the Executive Chairman of the Issuer's board of directors (the "Board"), effective as of the closing of the transaction.

Depending on various factors, including, without limitation, the Issuer's financial position and strategic direction, the outcome of the discussions referenced above, actions taken by the Board, price levels of the Common Stock, other investment opportunities available to the Reporting Persons, conditions in the securities market and general economic and industry conditions, the Reporting Persons may in the future take such actions with respect to their investment in the Issuer as they deem appropriate. These actions may include, without limitation: (i) acquiring additional shares of Common Stock and/or other equity, debt, notes, or other securities of the Issuer (collectively, "Securities"); (ii) disposing of any or all of their Securities; (iii) engaging in hedging or other transactions with respect to the Securities; and/or (iv) engaging in discussions with management, the Board, other stockholders of the Issuer and other relevant parties, or taking other actions to propose changes in the business, operations, governance or capitalization of the Issuer.

Except as set forth herein, the Reporting Persons have no present plans or proposals that relate to or that would result in any of the actions specified in clauses (a) through (j) of Item 4 of Schedule 13D.

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

**(a)**
The information contained on the cover pages to this Schedule 13D is incorporated by reference into this Item 5.

**(b)**
The information contained on the cover pages to this Schedule 13D is incorporated by reference into this Item 5. The aggregate number and percentage of the Common Stock beneficially owned by each Reporting Person are as follows:

Fusion Summer Limited

*   Amount beneficially owned: 6,830,402 shares
*   Percent of class: 17.0%
*   Sole power to vote or to direct the vote: 0
*   Shared power to vote or to direct the vote: 6,830,402
*   Sole power to dispose or to direct the disposition: 0
*   Shared power to dispose or to direct the disposition: 6,830,402

These shares consist of 6,830,402 shares of Common Stock held directly by Fusion Summer. Fusion Summer shares the power to vote and dispose of these securities with Mr. CHEE.

CHEE Choon Wee

*   Amount beneficially owned: 6,830,402 shares
*   Percent of class: 17.0%
*   Sole power to vote or to direct the vote: 0
*   Shared power to vote or to direct the vote: 6,830,402
*   Sole power to dispose or to direct the disposition: 0
*   Shared power to dispose or to direct the disposition: 6,830,402

These shares consist of 6,830,402 shares beneficially owned indirectly as Mr. CHEE is the ultimate controlling person of Fusion Summer. As the ultimate controlling person of Fusion Summer, Mr. CHEE may be deemed to share the power to vote and dispose of the securities held by Fusion Summer.

The percentages reported herein are calculated based on 40,295,612 shares of Common Stock outstanding as of September 24, 2025 (which information is provided by the Issuer to the Reporting Persons).

**(c)**
Except for the acquisition of securities described in Item 3, none of the Reporting Persons have effected any transactions in the Common Stock during the past sixty days.

**Item 6. Contracts, Arrangements, Understandings or Relationships With Respect to Securities of the Issuer.**

The information set forth in Items 2, 3, 4, and 5 is incorporated by reference in its entirety into this Item 6.

Joint Filing Agreement

The Reporting Persons have entered into a Joint Filing Agreement, a copy of which is attached as Exhibit 99.1 hereto, pursuant to which the Reporting Persons have agreed to file this Schedule 13D and any amendments thereto jointly.

Securities Purchase Agreement

As described in Item 3, Fusion Summer is a party to the Purchase Agreement, pursuant to which it acquired the shares of Common Stock. A form of the Purchase Agreement is filed as Exhibit 10.1 to the Issuer's Current Report on Form 8-K filed with the SEC on September 15, 2025, and incorporated by reference as Exhibit 99.2 to this Schedule 13D.

### 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:** Fusion Summer Limited

**Signature:** /s/ CHEE Choon Wee

**Name/Title:** CHEE Choon Wee, Director

**Date:** 10/02/2025

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:** CHEE Choon Wee

**Signature:** /s/ CHEE Choon Wee

**Name/Title:** CHEE Choon Wee, Individually

**Date:** 10/02/2025