Company: HSDTW
Filing Date: 2025-03-26
Form Type: 424B5
Source: 0001104659-25-028242
Chunk: 1

Company: Solana Co
Filing Date: 2025-03-26
Form: 424B5
Chunk 1
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 offering price of up to $1,444,764 under the Sales Agreement. If the market value of our common stock held by non-affiliates increases such that we may sell a greater amount of common stock under the Sales Agreement and the registration statement of which this prospectus supplement and the Prior Prospectus are a part, we will file another prospectus supplement prior to making such sales.

Our common stock is listed on The Nasdaq Capital Market under the symbol “HSDT.” On March 25, 2025, the last sale price of our common stock as reported on The Nasdaq Capital Market was $0.4116 per share.

The aggregate market value of our common stock held by non-affiliates as of March 26, 2025 pursuant to General Instruction I.B.6 of Form S-3 is $4,564,372, which was calculated based on 6,085,830 shares of our common stock outstanding held by non-affiliates and at a price of $0.75 per share, the closing price of our common stock on January 31, 2025. As of the date hereof, we have sold $76,693 of securities pursuant to General Instruction I.B.6 of Form S-3 during the prior 12 calendar month period that ends on and includes the date hereof. As a result of the limitations of General Instruction I.B.6 of Form S-3, and in accordance with the terms of the Sales Agreement, we may offer and sell shares of our common stock having an aggregate offering price of up to $1,444,764 from time to time through Roth.

Investing in our common stock involves significant risks. See “Risk Factors” beginning on page S-4of the Prior Prospectus and in the documents incorporated by reference in the Prior Prospectus for a discussion of the factors you should carefully consider before deciding to purchase our common stock.

Neither the Securities and Exchange Commission nor any state securities commission has approved or disapproved of these securities or passed upon the adequacy or accuracy of this prospectus supplement or the Prior Prospectus. Any representation to the contrary is a criminal offense.**

#### Roth Capital Partners
<div align='center'>The date of this prospectus supplement is March 26, 2025.</div>

TABLE OF CONTENTS

TABLE OF CONTENTS Prospectus Supplement

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| ABOUT THIS PROSPECTUS SUPPLEMENT                  | ​ | ​