Solidion Technology Inc.

As filed with the Securities and Exchange Commission on June 12, 2026.

Registration No. 333-

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORMS-1

REGISTRATION STATEMENT

UNDER

THE SECURITIES ACT OF 1933

(Exact Name of Registrant as Specified in its Charter)

13355 Noel Rd, Suite 1100

Dallas, TX 75240

(972) 918-5120

(Address, including zip code, and telephone number, including area code, of registrant’s principal executive offices)

Jaymes Winters

Chief Executive Officer

13355 Noel Rd, Suite 1100

Dallas, TX 75240

(972) 918-5120

(Name, address, including zip code, and telephone number, including area code, of agent for service)

With copies to:

Aslam A. Rawoof

Benesch, Friedlander, Coplan & Aronoff LLP

1155 Avenue of the Americas, Floor 26

New York, New York 10036

(646) 593-7050

Approximate date of commencement of proposed sale to the public: From time to time after the effective date of this Registration Statement.

If any of the securities being registered on this Form are to be offered on a delayed or continuous basis pursuant to Rule 415 under the Securities Act of 1933 check the following box.☒

If this Form is filed to register additional securities for an offering pursuant to Rule 462(b) under the Securities Act, please check the following box and list the Securities Act registration statement number of the earlier effective registration statement for the same offering.☐

If this Form is a post-effective amendment filed pursuant to Rule 462(c) under the Securities Act, check the following box and list the Securities Act registration statement number of the earlier effective registration statement for the same offering.☐

If this Form is a post-effective amendment filed pursuant to Rule 462(d) under the Securities Act, check the following box and list the Securities Act registration statement number of the earlier effective registration statement for the same offering.☐

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company” and “emerging growth company” in Rule 12b-2 of the Exchange Act.

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 to Section 7(a)(2)(B) of the Securities Act.☐

The registrant hereby amends this Registration Statement on such date or dates as may be necessary to delay its effective date until the registrant shall file a further amendment which specifically states that this Registration Statement shall thereafter become effective in accordance with Section 8(a) of the Securities Act or until the Registration Statement shall become effective on such date as the SEC, acting pursuant to said Section 8(a), may determine.

The information in this prospectus is not complete and may be changed. These securities may not be sold until the Registration Statement filed with the Securities and Exchange Commission is effective. This prospectus is not an offer to sell these securities and it is not soliciting an offer to buy these securities in any jurisdiction where the offer or sale is not permitted.

Up to 8,629,516 Shares of Common Stock

(including up to 1,583,000 Shares of Common Stock Issuable Upon Exercise of Pre-Funded Warrants

and 348,250 Shares of Common Stock Issuable Upon Exercise of Warrants that are Not Pre-Funded Warrants)

This prospectus relates to the possible resale from time to time by the selling securityholders named herein of up to 8,629,516 shares of common stock, $0.0001 par value per share (the “Common Stock”), which consists of:

• (i) 3,447,957 shares of Common Stock issued pursuant to that certain Amendment to the 2024 Purchase Agreement, dated as of October 21, 2025, by and between us, Bayside Project LLC and Madison Bond LLC (the “2024 Purchase Agreement Amendment”);

• (ii) 110,134 shares of Common Stock issuable upon the conversion of certain promissory notes issued by us on September 29, 2023, October 12, 2023, November 16, 2023, January 30, 2024, January 31, 2024, February 1, 2024 and February 2, 2024 (the “Convertible Notes,” and such shares, the “Convertible Note Shares”);

• (iii) 1,119,695 shares of Common Stock issued to Global Graphene Group, Inc. pursuant to the Merger Agreement, dated February 16, 2023 (as amended on August 25, 2023, the “Merger Agreement”), by and among Nubia Brand International Corp. (“Nubia”), Honeycomb Battery Company, Nubia Merger Sub, Inc.;

• (iv) 75,000 shares of Common Stock issuable to Arbor Lake Capital, Inc. with 35,000 shares issued pursuant to the Merger Agreement and 40,000 issued pursuant to the amended Strategic Cooperation Consulting Agreement, dated September 11, 2024 (the “Strategic Cooperation Consulting Agreement”), by and between the Company and Arbor Lake Capital, Inc.;

• (v) 10,000 shares of Common Stock issuable to Arbor Lake Capital LLC pursuant to the Consulting Agreement, dated January 31, 2024, by and between the Company and Arbor Lake Capital LLC (the “2024 Consulting Agreement”);

• (vi) 61,750 shares of Common Stock originally issued to Mach FM Acquisitions LLC (the “Sponsor”) and its affiliates in connection with the initial public offering of Nubia;

• (vii) 190,860 shares of Common Stock issued to Meteora Capital Partners, LP, Meteora Select Trading Opportunities Master, LP, and Meteora Strategic Capital, LLC pursuant to the Forward Purchase Agreement, dated December 13, 2023, as amended on August 29, 2024 (the “Forward Purchase Agreement”);

• (viii) 2,470 shares of Common Stock issued to affiliates of EF Hutton LLC in connection with the initial public offering of Nubia;

• (ix) 120,000 shares of Common Stock issued in consideration of prior board service from the closing of the Company’s business combination on February 2, 2024 until one year thereafter, consisting of 40,000 shares issued to each of our non-executive directors, John Davis and Karin-Joyce Tjon, and our former non-executive director Cynthia Ekberg Tsai;

• (x) 120,000 shares of Common Stock issued in consideration of prior service to the Company from the closing of the Company’s business combination on February 2, 2024 until one year thereafter, consisting of shares issued to certain of our non-executive employees;

• (xi) 450,000 shares of Common Stock issued to G3 pursuant to an “earn-out” provision in the Merger Agreement following the approval by the Board of Directors of the Company (the “Board”) to deem the earn-out conditions satisfied;

• (xii) 240,400 shares of Common Stock issued to Anson Investments Master Fund LP (“Anson”) pursuant to an agreement between the Company and Anson entered into on December 8, 2025 (the “Anson Agreement”).

• (xiii) 750,000 shares of Common Stock issued pursuant to that certain securities purchase agreement, dated June 7, 2026 (the “2026 Purchase Agreement”), by and between the Company and Alyeska Master Fund, L.P. (the “2026 Investor”);

• (xiv) up to 1,583,000 shares of Common Stock issuable upon the exercise of pre-funded warrants issued to the 2026 Investor (the “Pre-Funded Warrants”) pursuant to the 2026 Purchase Agreement;

• (xv) up to 116,650 shares of Common Stock issuable upon the exercise of warrants issued to Titan Partners Group LLC, a division of American Capital Partners, LLC, as placement agent (the “Placement Agent”), in connection with the 2026 Private Placement (as defined below) (the “Placement Agent Warrants”) at an exercise price of $17.25 per share;

• (xvi) up to an aggregate of 108,100 shares of Common Stock issuable upon the exercise of 108,100 private warrants (the “Private Warrants”) originally issued in a private placement in connection with Nubia’s initial public offering; and

• (xvii) up to 123,500 shares of Common Stock issuable upon the exercise of 123,500 warrants (the “Public Warrants” and, together with the Pre-Funded Warrants, the Placement Agent Warrants and the Private Warrants, the “Warrants”) originally issued in the initial public offering of Nubia.

We will not receive any cash proceeds from any sale of the shares of our Common Stock by the selling securityholders. We will, however, receive the net proceeds of any Warrants exercised for cash.

We are registering the securities for resale pursuant to the selling securityholders’ registration rights under certain agreements between us and the selling securityholders. We are registering the resale of shares of our Common Stock to permit the selling securityholders to sell such shares without restriction in the open market. However, the registration of the potential resale shares of our Common Stock hereunder does not necessarily mean that the selling securityholders will sell the shares. The selling securityholders or their permitted transferees or other successors-in-interest may, but are not required to, sell the shares of our Common Stock offered by this prospectus from time to time in a number of different ways and at varying prices as determined by the prevailing market price for shares or in negotiated transactions. See “Plan of Distribution” on page 30 for a description of how the selling securityholders may dispose of the shares covered by this prospectus.

We will pay all expenses incident to the registration of the potential resale of the 8,629,516 shares of our Common Stock offered herein (other than for any discounts or commissions to any underwriter or broker attributable to the sale of shares of our Common Stock or any fees or expenses incurred by a holder of shares of our Common Stock that, according to the written instructions of any regulatory authority, we are not permitted to pay).

Our common stock is listed on the Nasdaq Capital Market under the symbol “STI.” On June 11, 2026, the last reported sales price for our common stock was $25.83 per share. Our principal executive offices are located at 13355 Noel Rd, Suite 1100, Dallas, TX 75240, and our telephone number is (972) 918-5120.

We are an “emerging growth company” under the federal securities laws and are subject to reduced public company reporting requirements. Additionally, we are a “smaller reporting company” under the federal securities laws and, as such, have elected to comply with certain reduced public company disclosure requirements for this prospectus and future filings. See “Prospectus Summary — Smaller Reporting Company” and “Prospectus Summary — Emerging Growth Company” for additional information. Investing in our securities involves a high degree of risk. You should review carefully the risks and uncertainties described under the heading “Risk Factors” beginning on page 7 of this prospectus, and under similar headings in any amendment or supplements to this prospectus. Neither the Securities and Exchange Commission or any state securities commission has approved or disapproved of these securities or passed upon the adequacy or accuracy of this prospectus. Any representation to the contrary is a criminal offense.

The date of this prospectus is , 2026.