X0202 SCHEDULE 13D 0002149344 XXXXXXXX LIVE Ordinary Shares, par value $0.0001 per share 08/27/2026 false 0002133239 G82941108 Southern Cross Acquisition II Corp.

1412 BROADWAY 21ST FLOOR, SUITE 21 V, NEW YORK, NY 10018

PEIZHONG YU 852 92859999 PO BOX 309, UGLAND HOUSE GRAND CAYMAN GEORGE TOWN E9 00000 0002149344 Southern Cross Acquisition II Sponsor Corp. a OO N E9 3025800 0 3025800 0 3025800 N 27.75 CO (1) Includes (i) 2,820,000 ordinary shares, par value $0.0001 per share (the "ordinary shares"), of Southern Cross Acquisition II Corp. (the "Issuer") acquired by Southern Cross Acquisition II Sponsor Corp. (the "Sponsor") as founder shares prior to the Issuer's initial public offering (following the partial exercise of the underwriters' over-allotment option, 50,877 founder shares are no longer subject to forfeiture, and up to 324,123 founder shares remain subject to forfeiture to the extent that the underwriter's over-allotment option is not exercised in full); and (ii) 205,800 ordinary shares, underlying 205,800 private placement units acquired by the Sponsor in a private placement simultaneously with the consummation of the Issuer's initial public offering. Each private placement unit consists of one ordinary share, one warrant exercisable for one ordinary share at an exercise price of $11.50, and one right to receive one-fourth (1/4) of one ordinary share. 0002149406 Yu Peizhong a OO N F4 3025800 0 3025800 0 3025800 N 27.75 IN (2) The Sponsor is the record holder of the ordinary shares reported herein. Mr. Peizhong Yu is the sole shareholder and a director of the Sponsor, which entitles him to voting, dispositive or investment power over the Sponsor. As such, Mr. Peizhong Yu is deemed to have voting and dispositive rights over the securities of the Issuer held by the Sponsor. Ordinary Shares, par value $0.0001 per share Southern Cross Acquisition II Corp. 1412 BROADWAY 21ST FLOOR, SUITE 21 V, NEW YORK, NY 10018 This statement is filed by the Sponsor and Mr. Peizhong Yu (collectively, the "Reporting Persons"). The Reporting Persons are the holders of record of approximately 27.75% of the Issuer's outstanding Ordinary Shares based on the number of ordinary shares outstanding as of August 27, 2026. The principal business address of the Reporting Persons is PO Box 309, Ugland House, Grand Cayman, George Town, Cayman Islands. Mr. Peizhong Yu is the sole shareholder and director of the Sponsor, which entitles him to voting, dispositive or investment power over the Sponsor. As such, Mr. Peizhong Yu is deemed to have voting and dispositive rights over the securities of the Issuer held by the Sponsor. During the past five years, none of the Reporting Persons or to the knowledge of the Reporting Persons, the persons identified in this Item 2, has been a party to a civil proceeding of a judicial or administrative body of competent jurisdiction and as a result of such proceeding was the subject to a judgment, decree or final order enjoining future violations of, or prohibiting or mandating activities subject to, federal and state securities laws of findings any violation with respect to such laws. During the past five years, none of the Reporting Persons or to the knowledge of the Reporting Persons, the persons identified in this Item 2, has been convicted in a criminal proceeding (excluding traffic violations or similar misdemeanors). The Sponsor is a Cayman Islands exempted company. Mr. Peizhong Yu is citizen of the People's Republic of China. The information set forth in Items 4 and 5 of this Schedule 13D are hereby incorporated by reference into this Item 3. On May 26, 2026, the Issuer issued 2,875,000 ordinary shares as founder shares to the Sponsor for an aggregate purchase price of $25,000. On August 25, 2026, the Sponsor transferred (i) 15,000 founder shares to Ally Tong Zhang, Chairwoman and Chief Executive Officer of the Issuer, (ii) 10,000 founder shares to Xin Wang, Chief Financial Officer of the Issuer, and (iii) 10,000 founder shares to each of Hongmei Zhao, Du Zhiqiang, and Wenhua Qian, independent directors of the Issuer. On August 27, 2026, simultaneously with the Issuer's initial public offering, the Sponsor acquired 205,800 private placement units in the private placement. Each private placement unit consists of one ordinary share of the Issuer, one warrant exercisable for one ordinary share at an exercise price of $11.50, and one right to receive one-fourth (1/4) of one ordinary share of the Issuer. Depending on prevailing market, economic and other conditions, the Reporting Persons may from time to time acquire additional ordinary shares or engage in discussions with the Issuer concerning future acquisitions of its shares. Such acquisitions may be made by means of open-market purchases, privately negotiated transactions, direct acquisitions from the Issuer or otherwise. Except as set forth in this Item 4, the Reporting Persons have no plans or proposals that relate to or would result in: (a) the acquisition by any person of additional securities of the Issuer, or the disposition of securities of the Issuer; (b) an extraordinary corporate transaction, such as a merger, reorganization or liquidation, involving the Issuer or any of its subsidiaries; (c) a sale or transfer of a material amount of assets of the Issuer or any of its subsidiaries; (d) any change in the present board of directors of the Issuer (the "Board") or management of the Issuer, including any plans or proposals to change the number or term of directors or to fill any existing vacancies on the Board; (e) any material change in the present capitalization or dividend policy of the Issuer; (f) any other material change in the Issuer's business or corporate structure, including but not limited to, if the Issuer is a registered closed-end investment company; (g) changes in the Issuer's charter, by-laws or instruments corresponding thereto or other actions which may impede the acquisition of control of the Issuer by any person; (h) causing a class of securities of the Issuer to be delisted from a national securities exchange or to cease to be authorized to be quoted in an inter-dealer quotation system of a registered national securities association; (i) a class of equity securities of the Issuer becoming eligible for termination of registration pursuant to Section 12(g)(4) of the Securities Exchange Act of 1934, as amended; or (j) any action similar to any of those enumerated above. The Reporting Persons may, at any time and from time to time, formulate other purposes, plans or proposals regarding the Issuer, or any other actions that could involve one or more of the types of transactions or have one or more of the results described in clauses (a) through (j) of Item 4 of Schedule 13D. The responses to Items 7 - 13 of the cover pages of this Schedule 13D are incorporated herein by reference. The aggregate number and percentage of ordinary shares beneficially or directly owned by the Reporting Persons is based upon a total of 10,905,615 ordinary shares outstanding as of August 27, 2026. The Reporting Persons beneficially own 3,025,800 ordinary shares, representing approximately 27.75% issued and outstanding ordinary shares. The responses to Items 7 - 13 of the cover pages of this Schedule 13D are incorporated herein by reference. The beneficial ownership of the Reporting Persons is 3,025,800 ordinary shares, representing approximately 27.75% issued and outstanding ordinary shares. Other than the disposition of the shares as reported in this Schedule 13D, no actions in the ordinary shares were effected during the past sixty (60) days by the Reporting Persons. N/A N/A The information set forth in Items 4 of this Schedule 13D are hereby incorporated by reference into this Item 6. 7.1 Joint Filing Agreement, dated August 31, 2026. 10.1 Securities Purchase Agreement, dated May 26, 2026, between the Issuer and the Sponsor. https://www.sec.gov/Archives/edgar/data/2133239/000192998026000317/scacii_ex105.htm 10.2 Securities Transfer agreement, dated August 25, 2026, between the Sponsor and Chief Executive Officer of the Issuer. https://www.sec.gov/Archives/edgar/data/2133239/000192998026000510/scacii_ex101.htm 10.3 Securities Transfer agreement, dated August 25, 2026, between the Sponsor and Chief Financial Officer of the Issuer. https://www.sec.gov/Archives/edgar/data/2133239/000192998026000510/scacii_ex102.htm 10.4 Securities Transfer Agreement, dated August 25, 2026, among the Sponsor and certain directors of the Issuer. https://www.sec.gov/Archives/edgar/data/2133239/000192998026000510/scacii_ex103.htm 10.5 Private Unit Subscription Agreement, dated August 25, 2026, between the Issuer, the Sponsor, and D. Boral Capital LLC. https://www.sec.gov/Archives/edgar/data/2133239/000192998026000510/scacii_ex104.htm Southern Cross Acquisition II Sponsor Corp. /s/ Peizhong Yu 08/31/2026 Yu Peizhong /s/ Peizhong Yu 08/31/2026