Filed Pursuant to Rule 424(b)(3) and Rule 424(c)

Registration Statement No. 333-282536

PROSPECTUS SUPPLEMENT NO. 9

(to Prospectus dated November 6, 2024, as amended)

STARDUST POWER INC.

6,500,000 SHARES OF COMMON STOCK

This prospectus supplement supplements the prospectus dated November 6, 2024, as amended by the prospectus dated May 13, 2025 (the “Prospectus”), which forms a part of our registration statement on Form S-1 (No. 333-282536). This prospectus supplement is being filed to update and supplement the information in the Prospectus with the information contained in our current report on Form 8-K filed with the Securities and Exchange Commission (the “SEC”) on June 10, 2025 (the “Current Report”). Accordingly, we have attached the Current Report to this prospectus supplement.

The Prospectus relates to the offer and resale of up to 6,500,000 shares of our common stock, $0.0001 per share (the “Common Stock”), by B. Riley Principal Capital II, LLC (the “Selling Stockholder”). The shares included in this Prospectus consist of shares of Common Stock that we have issued or that we may, in our discretion, elect to issue and sell to the Selling Stockholder, from time to time after the date of this Prospectus, pursuant to a Common Stock Purchase Agreement we entered into with the Selling Stockholder on October 7, 2024 (the “Purchase Agreement”), in which the Selling Stockholder has committed to purchase from us, at our direction, up to $50,000,000 of our Common Stock, subject to terms and conditions specified in the Purchase Agreement.

Our Common Stock is listed on The Nasdaq Global Market (“Nasdaq”) under the symbol “SDST”. On June 9, 2025, the last reported sales price of our Common Stock was $0.61 per share.

We are an “emerging growth company” as defined under U.S. federal securities laws and, as such, have elected to comply with reduced public company reporting requirements. The Prospectus and this prospectus supplement comply with the requirements that apply to an issuer that is an emerging growth company. This prospectus supplement updates and supplements the information in the Prospectus and is not complete without, and may not be delivered or utilized except in combination with, the Prospectus, including any amendments or supplements thereto. This prospectus supplement should be read in conjunction with the Prospectus and if there is any inconsistency between the information in the Prospectus and this prospectus supplement, you should rely on the information in this prospectus supplement.

Investing in our securities involves a high degree of risk. You should review carefully the risks and uncertainties described in the section titled “Risk Factors” beginning on page 7 of the Prospectus, and under similar headings in any amendments or supplements to the Prospectus.

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

The date of this prospectus supplement is June 10, 2025.

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or Section 15(d)

of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): June 9, 2025

STARDUST POWER INC.

(Exact name of registrant as specified in its charter)

Delaware	001-39875	99-3863616
(State or other jurisdiction of incorporation or organization)	(Commission File Number)	(IRS Employer Identification Number)

15 E. Putnam Ave, Suite 378

Greenwich, Connecticut 06830

(Address of Principal Executive Offices) (Zip Code)

800-742-3095

(Registrant’s telephone number, including area code)

Not Applicable

(Former name or former address, if changed since last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐	Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)
☐	Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)
☐	Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))
☐	Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Title of each class	Trading Symbol(s)	Name of each exchange on which registered
Common Stock, par value $0.0001 per share	SDST	The Nasdaq Global Market
Redeemable warrants, each whole warrant exercisable for one share of Common Stock at an exercise price of $11.50	SDSTW	The Nasdaq Global Market

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 or Rule 12b-2 of the Securities Exchange Act of 1934.

Emerging growth company ☒

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

ITEM 5.07 SUBMISSION OF MATTERS TO A VOTE OF SECURITY HOLDERS

At the 2025 Annual Meeting of Stockholders of Stardust Power, Inc. (the “Company”) held on June 9, 2025, the Company’s stockholders voted upon the following four proposals, each of which is described in more detail in the Company’s definitive proxy statement filed with the Securities and Exchange Commission on April 28, 2025. The final vote results for each proposal were as follows:

Proposal 1: Election of Directors

The stockholders elected each of the individuals set forth below to the Board of Directors of the Company (the “Board”) to serve a one-year term expiring at the Company’s 2026 annual meeting of stockholders:

	FOR		AGAINST		ABSTAIN		BROKER NON-VOTES
Roshan Pujari		39,824,281		63,384		350,206		6,457,054
Anupam Agarwal		39,816,406		68.859		352,606		6,457,054
Martyn Buttenshaw		39,822,701		66,767		348,403		6,457,054
Charlotte Nangolo		39,816,740		70,284		350,847		6,457,054
Mark Rankin		39,839,073		47,842		350,956		6,457,054
Michael Earl Cornett Sr.		39,839,451		47,646		350,956		6,457,054
Sudhindra Kankanwadi		39,817,758		69,207		350,906		6,457,054

Proposal 2: Ratification of the Appointment of Independent Registered Public Accounting Firm

The appointment of KNAV CPA LLP as the Company’s independent registered public accounting firm for the fiscal year ending December 31, 2025 was ratified by the stockholders, with votes as follows:

FOR	AGAINST		ABSTAIN		BROKER NON-VOTES
46,123,756		206,127		365,042		-

Proposal 3: Reverse Stock Split

The stockholders approved an amendment to the Company’s Certificate of Incorporation to effect a reverse stock split of the Company’s Common Stock, at a ratio in the range of 1 for 10 to 1 for 100, with the exact ratio to be determined in the discretion of the Board and with such reverse stock split to be effected at such time and date, if at all, as determined by the Board in its sole discretion, with votes as follows:

FOR	AGAINST		ABSTAIN		BROKER NON-VOTES
45,825,205		508,447		361,273		-

Proposal 4: Approval of Issuance of Common Stock upon Exercise of Certain Warrants in Accordance with the Nasdaq Listing Rule 5635(d)

The stockholders approved the issuance of up to an aggregate of 9,584,000 shares of the Company’s Common Stock issuable upon the exercise of certain warrants to purchase the Company’s Common Stock, in accordance with Nasdaq Listing Rule 5635(d), with votes as follows:

FOR	AGAINST		ABSTAIN		BROKER NON-VOTES
39,765,068		129,658		343,145		6,457,054

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, the Registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

	STARDUST POWER INC.
	By:	/s/ Roshan Pujari
	Name:	Roshan Pujari
	Title:	Chief Executive Officer
Dated: June 10, 2025