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SDST 424B5: Secondary offering

Stardust Power Inc.

Filed with the SEC on · accession 0001493152-26-043187

SDST filed a 424B5 (prospectus (offering)) with the SEC on Sep 18, 2026. Stardust Power Inc. filed an amendment to its prospectus supplement to increase the maximum aggregate offering price of common stock that may be sold under its at-market issuance sales agreement with B. The stock moved -50.3% by the first close after the filing.

Summary of the filing

Stardust Power Inc. filed an amendment to its prospectus supplement to increase the maximum aggregate offering price of common stock that may be sold under its at-market issuance sales agreement with B. Riley Securities from $5,000,000 to $8,990,537, subject to the one-third public float limitation under General Instruction I.B.6 of Form S-3.

For details, click here →How to read a 424B5 →

Key details

Maximum aggregate offering price under amended prospectus supplement$9.0M
Previous maximum aggregate offering price$5.0M
Last reported sale price per share on September 16, 2026$0
Aggregate market value of non-affiliate common equity as of July 22, 2026$14.0M
IssuerStardust Power Inc.
Agent/underwriterB. Riley Securities, Inc.

How SDST stock reacted

Close before

$0.25

Sep 17, 2026

First close after

-50.32%

$0.13

5 trading days

-54.29%

$0.12

Since filing

-95.03%

$0.01

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Frequently asked questions

What did SDST file with the SEC on Sep 18, 2026?

SDST filed a 424B5 (Secondary offering). Stardust Power Inc. filed an amendment to its prospectus supplement to increase the maximum aggregate offering price of common stock that may be sold under its at-market issuance sales agreement with B. Riley Securities from $5,000,000 to $8,990,537, subject to the one-third public float limitation under General Instruction I.B.6 of Form S-3.

What does a secondary offering mean for SDST stock?

New shares dilute existing holders and are often sold at a discount to the market price.

How do I read a 424B5?

The final terms of an offering of shares or bonds. Look at price, number of shares and the discount to the market price. Large offerings dilute existing shareholders.

Why are SEC filings important?

Public companies must tell the SEC about anything that can change their value — results, leadership changes, big deals, new shares, bankruptcy. Filings are the official source, often before the news. A 424B5 (prospectus (offering)): The final terms of an offering of shares or bonds.

How did SDST stock react to this filing?

SDST closed at $0.25 before the filing and $0.13 on Sep 18, 2026 (-50.32%). Five trading days later: $0.12 (-54.29%).

Other SDST SEC filings

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