Company: HSDTW
Filing Date: 2025-05-23
Form Type: S-1
Source: 0001104659-25-052494
Chunk: 74

Company: Solana Co
Filing Date: 2025-05-23
Form: S-1
Chunk 74
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#### Helius Medical Technologies, Inc.
By:

/s/ Dane C. Andreeff

Dane C. Andreeff 
 President, Chief Executive Officer and Director

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

TABLE OF CONTENTS

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-fact and agent, or his substitute or substitutes, may lawfully do or cause to be done by virtue hereof. Pursuant to the requirements of the Securities Act of 1933, as amended, this Registration Statement on Form S-1 has been signed by the following persons in the capacities and on the dates indicated.

| ​ 
 ​ 
 ​ | Signature                
 /s/ Dane C. Andreeff     
 ​                        
 Dane C. Andreeff         
 /s/ Jeffrey S. Mathiesen 
 ​                        
 Jeffrey S. Mathiesen     | ​ 
 ​ 
 ​ | ​ 
 ​ 
 ​ | Title                                                                                             
 President, Chief Executive Officer(Principal Executive Officer)and Director                       
 Chief Financial Officer(Principal Financial Officer and Principal Accounting Officer)and Director | ​ 
 ​ 
 ​ | ​ 
 ​ 
 ​ | Date         
 May 23, 2025 
 May 23, 2025 | ​ 
 ​ 
 ​ |
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