Company: HSDTW
Filing Date: 2025-03-25
Form Type: S-3/A
Source: 0001104659-25-027793
Chunk: 24

Company: Solana Co
Filing Date: 2025-03-25
Form: S-3/A
Chunk 24
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 13, 2024, August 12, 2024and November 12, 2024, respectively.

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Our Current Reports on Form 8-K, filed with the SEC on January 15, 2025, January 24, 2025 , and February 7, 2025.

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Our Definitive Proxy Statement on Schedule 14A, filed with the SEC on March 25, 2025 (to the extent specifically incorporated by reference into our Annual Report on Form 10-K).

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The description of our common stock included in our registration statement on Form 8-A filed on April 4, 2018, including any amendments or reports filed for the purposes of updating this description.

All reports and other documents we subsequently file pursuant to Section 13(a), 13(c), 14 or 15(d) of the Securities Exchange Act of 1934, as amended, which we refer to as the “Exchange Act” in this prospectus, prior to the termination of this offering, including all such documents we may file with the SEC after the date of filing of this registration statement and prior to the effectiveness of this registration statement, but excluding any information furnished to, rather than filed with, the SEC, will also be incorporated by reference into this prospectus and deemed to be part of this prospectus from the date of the filing of such reports and documents.

You may request a free copy of any of the documents incorporated by reference in this prospectus by writing or telephoning us at the following address:

#### Helius Medical Technologies, Inc.

#### 642 Newtown Yardley Road, Suite 100

#### Attn: Jeffrey Mathiesen

#### Phone: (215) 944-6100
Exhibits to the filings will not be sent, however, unless those exhibits have specifically been incorporated by reference in this prospectus or any accompanying prospectus supplement.

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TABLE OF CONTENTS

#### 6,213,888 Shares of Common Stock

### PROSPECTUS

#### , 2025
TABLE OF CONTENTS

PART II INFORMATION NOT REQUIRED IN PROSPECTUS Item 14. Other Expenses of Issuance and Distribution The following table sets forth estimated expenses in connection with the issuance and distribution of the shares of common stock being registered hereby. Each item listed is estimated, except for the SEC registration fee:

| ​ | SEC registration Fee                           | ​ | ​ | ​ | $ | 618.38 |