Company: HSDTW
Filing Date: 2025-04-15
Form Type: DRS
Source: 0001104659-25-035130
Chunk: 67

Company: Solana Co
Filing Date: 2025-04-15
Form: DRS
Chunk 67
---
.1** | ​ | ​ | Power of Attorney (included on signature page hereto)                                                                                                                                                                                     | ​ |
| ​ |         107** | ​ | ​ | Filing Fee Table                                                                                                                                                                                                                          | ​ |

* Indicates a management contract or compensatory plan. ** To be filed by amendment. ‡ Confidential information has been omitted and filed separately with the U.S. Securities and Exchange Commission. Confidential treatment has been granted with respect to this omitted information.

II-6

TABLE OF CONTENTS

### CONFIDENTIAL TREATMENT REQUESTED

#### PURSUANT TO 17 C.F.R. SECTION 200.83

### SIGNATURES
Pursuant to the requirements of the Securities Act of 1933, as amended, the Registrant has duly caused this Registration Statement on Form S-1 to be signed on its behalf by the undersigned, thereunto duly authorized, in the City of Newton, State of Pennsylvania, on the day of , 2025.

#### Helius Medical Technologies, Inc.
By:

Dane C. Andreeff 
 President, Chief Executive Officer and Director

<div align='center'>II-7</div>

TABLE OF CONTENTS CONFIDENTIAL TREATMENT REQUESTED PURSUANT TO 17 C.F.R. SECTION 200.83

POWER OF ATTORNEY KNOW ALL MEN BY THESE PRESENTS, that the undersigned officers and directors of Helius Medical Technologies, Inc., a Delaware corporation, do hereby constitute and appoint each of Dane C. Andreeff and Jeffrey S. Mathiesen as his or her true and lawful attorney-in-fact and agent, with full power of substitution and re-substitution, for him and in his name, place, and stead, in any and all capacities, to sign any and all amendments (including post-effective amendments, exhibits thereto and other documents in connection therewith) to this Registration Statement and any subsequent registration statement filed by the Registrant pursuant to Rule 462(b) of the Securities Act of 1933, as amended, which relates to this Registration Statement, and to file the same, with all exhibits thereto, and other documents in connection therewith, with the Securities and Exchange Commission, granting unto said attorney-in-fact and agent full power and authority to do and perform each and every act and thing requisite and necessary to be done in connection therewith, as fully to all intents and purposes as he might or could do in person, hereby ratifying and confirming all that said attorney-in