# EDGAR Filing Document

**Accession Number:** 0002087087
**File Stem:** 0001104659-26-000346
**Filing Date:** 2026-1
**Character Count:** 26334
**Document Hash:** 9ffdd76ec19ea7e144a04be88d43e0d0
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001104659-26-000346.hdr.sgml**: 20260105

**ACCESSION NUMBER**: 0001104659-26-000346

**CONFORMED SUBMISSION TYPE**: S-1/A

**PUBLIC DOCUMENT COUNT**: 2

**FILED AS OF DATE**: 20260105

**DATE AS OF CHANGE**: 20260105

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Black Spade Acquisition III Co
- **CENTRAL INDEX KEY:** 0002087087
- **STANDARD INDUSTRIAL CLASSIFICATION:** BLANK CHECKS [6770]
- **ORGANIZATION NAME:** 05 Real Estate & Construction
- **EIN:** 000000000
- **STATE OF INCORPORATION:** K3
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** S-1/A
- **SEC ACT:** 1933 Act
- **SEC FILE NUMBER:** 333-290602
- **FILM NUMBER:** 26503816

**BUSINESS ADDRESS:**
- **ADDRESS IS A NON US LOCATION:** YES
- **STREET 1:** THE CENTRIUM, SUITE 2902, 29/F
- **STREET 2:** 60 WYNDHAM STREET
- **CITY:** CENTRAL
- **PROVINCE COUNTRY:** K3
- **ZIP:** 00000
- **BUSINESS PHONE:** 852 3955 1316

**MAIL ADDRESS:**
- **ADDRESS IS A NON US LOCATION:** YES
- **STREET 1:** THE CENTRIUM, SUITE 2902, 29/F
- **STREET 2:** 60 WYNDHAM STREET
- **CITY:** CENTRAL
- **PROVINCE COUNTRY:** K3
- **ZIP:** 00000

**As filed with the U.S. Securities and Exchange Commission on January 5, 2026**

**Registration No. 333-290602**

**UNITED STATES SECURITIES AND EXCHANGE COMMISSION**

**Washington, D.C. 20549**

**AMENDMENT NO. 4 TO**

**FORM S-1**

**REGISTRATION STATEMENT *UNDER***

***THE SECURITIES ACT OF 1933***

**Black Spade Acquisition III Co**

(Exact Name of Registrant as Specified in Its Charter)

---

| | | |
|:---|:---|:---|
| **Cayman Islands** | **6770** | **N/A** |
| (State or other jurisdiction of<br> incorporation or organization | (Primary Standard Industrial<br> Classification Code Number) | (I.R.S. Employer<br> Identification Number) |

---

**Suite 2902, 29/F, The Centrium, 60 Wyndham Street, Central, Hong Kong**

**Tel: +852 3955 1316**

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

**Cogency Global Inc.**

**122 East 42nd Street, 18th Floor**

**New York, NY 10168**

**Phone: (800) 221-0102**

**Fax: (800) 944-6607**

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

***Copies to:***

---

| | |
|:---|:---|
| **Sharon Lau<br> Stacey Wong<br> Latham & Watkins LLP<br> 9 Raffles Place<br> #42-02 Republic Plaza<br> Singapore<br> 048619<br> Tel: +65 6536 1161** | **Mitchell S. Nussbaum<br> David J. Levine<br> Loeb & Loeb LLP<br> 345 Park Avenue<br> New York, NY 10154<br> Tel: (212) 407-4000** |

---

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

**Approximate date of commencement of proposed sale to the public**: As soon as practicable 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.

Large accelerated filer ◻ Accelerated filer ◻ <br> Non-accelerated filer ⌧ Smaller reporting company ⌧ <br> 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 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 of 1933, as amended, or until the Registration Statement shall become effective on such date as the Securities and Exchange Commission, acting pursuant to said Section 8(a), may determine.**

**EXPLANATORY NOTE**

This Amendment No. 4 (the "**Amendment No. 4**") to the Registration Statement on Form S-1 (File No. 333-290602) of Black Spade Acquisition III Co (the "**Registration Statement**") is being filed as an exhibits-only filing. Accordingly, this Amendment No. 4 consists only of the facing page, this explanatory note, Part II of the Registration Statement, the signature page to the Registration Statement and the filed exhibit. The remainder of the Registration Statement is unchanged and has therefore been omitted.

**PART II**

**INFORMATION NOT REQUIRED IN PROSPECTUS**

**Item 13.** **Other Expenses of Issuance and Distribution.**

The estimated expenses payable by us in connection with the offering described in this registration statement (other than the underwriting discount and commissions) will be as follows:

---

| | |
|:---|:---|
| SEC /FINRA expenses | $51836 |
| Accounting fees and expenses | 100000 |
| Travel and road show expenses | 25000 |
| Legal fees and expenses | 300000 |
| Printing and engraving expenses | 30000 |
| NYSE listing and filing fees | 80000 |
| Miscellaneous | 83164 |
| **Total** | $**670000** |

---

**Item 14.** **Indemnification of Directors and Officers.**

Cayman Islands law does not limit the extent to which a company's memorandum and articles of association may provide for indemnification of officers and directors, except to the extent any such provision may be held by the Cayman Islands courts to be contrary to public policy, such as to provide indemnification against willful default, willful neglect, civil fraud or the consequences of committing a crime. Our amended and restated memorandum and articles of association provide for indemnification of our officers and directors to the maximum extent permitted by law, including for any liability incurred in their capacities as such, except through their own actual fraud, willful default or willful neglect. We may purchase a policy of directors' and officers' liability insurance that insures our officers and directors against the cost of defense, settlement or payment of a judgment in some circumstances and insures us against our obligations to indemnify our officers and directors.

Our officers and directors have agreed to waive any right, title, interest or claim of any kind in or to any monies in the trust account, and have agreed to waive any right, title, interest or claim of any kind they may have in the future as a result of, or arising out of, any services provided to us and will not seek recourse against the trust account for any reason whatsoever. Accordingly, any indemnification provided will only be able to be satisfied by us if (i) we have sufficient funds outside of the trust account or (ii) we consummate an initial business combination.

Insofar as indemnification for liabilities arising under the Securities Act may be permitted to directors, officers or persons controlling us pursuant to the foregoing provisions, we have been informed that in the opinion of the SEC such indemnification is against public policy as expressed in the Securities Act and is therefore unenforceable.

**Item 15.** **Recent Sales of Unregistered Securities.**

On September 5, 2025, our initial shareholders paid $25,000, or approximately $0.004 per share, in exchange for 5,750,000 Class B ordinary shares (the "founder shares"). Such securities were issued in connection with our organization pursuant to the exemption from registration contained in Section 4(a)(2) of the Securities Act. The number of founder shares outstanding was determined based on the expectation that the total size of this offering would be a maximum of 17,250,000 units if the underwriters' over- allotment option is exercised in full and therefore that such founder shares would represent 25% of the outstanding shares after this offering. Up to 750,000 of these shares will be surrendered for no consideration depending on the extent to which the underwriters' over-allotment is exercised (including the forfeiture of 82,174 shares out of 630,000 founder shares held by our directors, officers, advisors and employees of sponsor's affiliates).

Black Spade Sponsor LLC III, our sponsor, is an accredited investor for purposes of Rule 501 of Regulation D. Each of the equity holders in our sponsor is an accredited investor under Rule 501 of Regulation D. The sole business of our sponsor is to act as the company's sponsor in connection with this offering. The limited liability company agreement of our sponsor provides that its membership interests may only be transferred to our officers or directors or other persons affiliated with our sponsor, or in connection with estate planning transfers.

Our sponsor and the underwriters have committed to purchase an aggregate of 7,550,000 private placement warrants (or 8,150,000 private placement warrants if the underwriters' over-allotment option is exercised in full), each exercisable to purchase one Class A ordinary share at $11.50 per share, at a price of $0.50 per warrant, or $3,775,000 in the aggregate (or $4,075,000 if the underwriters' over-allotment option is exercised in full), in a private placement that will close simultaneously with the closing of this offering. Of those 7,550,000 private placement warrants (or 8,150,000 private placement warrants if the underwriters' over-allotment option is exercised in full), our sponsor has agreed to purchase 6,550,000 private placement warrants (or 7,000,000 private placement warrants if the underwriters' over-allotment option is exercised in full), and the underwriters have agreed to purchase 1,000,000 private placement warrants (or 1,150,000 private placement warrants if the underwriters' over-allotment option is exercised in full). This purchase will take place on a private placement basis simultaneously with the completion of our initial public offering. This issuance will be made pursuant to the exemption from registration contained in Section 4(a)(2) of the Securities Act.

No underwriting discounts or commissions will be paid with respect to such sales.

**Item 16.** **Exhibits and Financial Statement Schedules.**

**EXHIBIT INDEX**

---

| | |
|:---|:---|
| **Exhibit No.** | **Description** |
| [1.1](https://www.sec.gov/Archives/edgar/data/2087087/000110465925122200/none-20251217xex1d1.htm) | [Form of Underwriting Agreement.\*](https://www.sec.gov/Archives/edgar/data/2087087/000110465925122200/none-20251217xex1d1.htm) |
| [3.1](https://www.sec.gov/Archives/edgar/data/2087087/000110465925094778/none-20250929xex3d1.htm) | [Memorandum and Articles of Association.\*](https://www.sec.gov/Archives/edgar/data/2087087/000110465925094778/none-20250929xex3d1.htm) |
| [3.2](https://www.sec.gov/Archives/edgar/data/2087087/000110465925122200/none-20251217xex3d2.htm) | [Form of Amended and Restated Memorandum and Articles of Association.\*](https://www.sec.gov/Archives/edgar/data/2087087/000110465925122200/none-20251217xex3d2.htm) |
| [4.1](https://www.sec.gov/Archives/edgar/data/2087087/000110465925120618/tm2527016d7_ex4-1.htm) | [Form of Specimen Unit Certificate.\*](https://www.sec.gov/Archives/edgar/data/2087087/000110465925120618/tm2527016d7_ex4-1.htm) |
| [4.2](https://www.sec.gov/Archives/edgar/data/2087087/000110465925120618/tm2527016d7_ex4-2.htm) | [Form of Specimen Class A Ordinary Share Certificate.\*](https://www.sec.gov/Archives/edgar/data/2087087/000110465925120618/tm2527016d7_ex4-2.htm) |
| [4.3](https://www.sec.gov/Archives/edgar/data/2087087/000110465925120618/tm2527016d7_ex4-4.htm) | [Form of Specimen Warrant Certificate. (included as an exhibit to Exhibit 4.4)\*](https://www.sec.gov/Archives/edgar/data/2087087/000110465925120618/tm2527016d7_ex4-4.htm) |
| [4.4](https://www.sec.gov/Archives/edgar/data/2087087/000110465925120618/tm2527016d7_ex4-4.htm) | [Form of Warrant Agreement between Continental Stock Transfer & Trust Company and the Registrant.\*](https://www.sec.gov/Archives/edgar/data/2087087/000110465925120618/tm2527016d7_ex4-4.htm) |
| [5.1](https://www.sec.gov/Archives/edgar/data/2087087/000110465925120618/tm2527016d7_ex5-1.htm) | [Opinion of Appleby, Cayman Islands counsel to the Registrant.\*](https://www.sec.gov/Archives/edgar/data/2087087/000110465925120618/tm2527016d7_ex5-1.htm) |
| [5.2](https://www.sec.gov/Archives/edgar/data/2087087/000110465925120618/tm2527016d7_ex5-2.htm) | [Opinion of Latham & Watkins LLP.\*](https://www.sec.gov/Archives/edgar/data/2087087/000110465925120618/tm2527016d7_ex5-2.htm) |
| [10.1](https://www.sec.gov/Archives/edgar/data/2087087/000110465925122200/none-20251217xex10d1.htm) | [Form of Letter Agreement among the Registrant, Black Spade Sponsor LLC III and each of the officers and directors of the Registrant.\*](https://www.sec.gov/Archives/edgar/data/2087087/000110465925122200/none-20251217xex10d1.htm) |
| [10.2](https://www.sec.gov/Archives/edgar/data/2087087/000110465925122200/none-20251217xex10d2.htm) | [Form of Investment Management Trust Agreement between Continental Stock Transfer & Trust Company and the Registrant.\*](https://www.sec.gov/Archives/edgar/data/2087087/000110465925122200/none-20251217xex10d2.htm) |
| [10.3](https://www.sec.gov/Archives/edgar/data/2087087/000110465925120618/tm2527016d7_ex10-3.htm) | [Form of Registration Rights Agreement among the Registrant, Black Spade Sponsor LLC III and the Holders signatory thereto.\*](https://www.sec.gov/Archives/edgar/data/2087087/000110465925120618/tm2527016d7_ex10-3.htm) |
| [10.4](https://www.sec.gov/Archives/edgar/data/2087087/000110465925120618/tm2527016d7_ex10-4.htm) | [Form of Sponsor Warrants Purchase Agreement among the Registrant and Black Spade Sponsor LLC III.\*](https://www.sec.gov/Archives/edgar/data/2087087/000110465925120618/tm2527016d7_ex10-4.htm) |
| [10.5](https://www.sec.gov/Archives/edgar/data/2087087/000110465925120618/tm2527016d7_ex10-5.htm) | [Form of Sponsor Warrants Purchase Agreement among the Registrant and the underwriters.\*](https://www.sec.gov/Archives/edgar/data/2087087/000110465925120618/tm2527016d7_ex10-5.htm) |
| [10.6](https://www.sec.gov/Archives/edgar/data/2087087/000110465925120618/tm2527016d7_ex10-6.htm) | [Form of Indemnity Agreement.\*](https://www.sec.gov/Archives/edgar/data/2087087/000110465925120618/tm2527016d7_ex10-6.htm) |
| [10.7](https://www.sec.gov/Archives/edgar/data/2087087/000110465925094778/none-20250929xex10d8.htm) | [Promissory Note issued to Black Spade Sponsor LLC III.\*](https://www.sec.gov/Archives/edgar/data/2087087/000110465925094778/none-20250929xex10d8.htm) |
| [10.8](https://www.sec.gov/Archives/edgar/data/2087087/000110465925094778/none-20250929xex10d7.htm) | [Securities Purchase Agreement between Black Spade Sponsor LLC III and the Registrant.\*](https://www.sec.gov/Archives/edgar/data/2087087/000110465925094778/none-20250929xex10d7.htm) |
| [10.9](https://www.sec.gov/Archives/edgar/data/2087087/000110465925120618/tm2527016d7_ex10-9.htm) | [Form of Administrative Services Agreement between the Registrant and Black Spade Sponsor LLC III.\*](https://www.sec.gov/Archives/edgar/data/2087087/000110465925120618/tm2527016d7_ex10-9.htm) |
| [14.1](https://www.sec.gov/Archives/edgar/data/2087087/000110465925120618/tm2527016d7_ex14-1.htm) | [Form of Code of Conduct.\*](https://www.sec.gov/Archives/edgar/data/2087087/000110465925120618/tm2527016d7_ex14-1.htm) |
| [23.1](tm2527016d19_ex23-1.htm) | [Consent of WithumSmith+Brown, PC#](tm2527016d19_ex23-1.htm) |
| [23.2](https://www.sec.gov/Archives/edgar/data/2087087/000110465925120618/tm2527016d7_ex5-1.htm) | [Consent of Appleby (included on Exhibit 5.1).\*](https://www.sec.gov/Archives/edgar/data/2087087/000110465925120618/tm2527016d7_ex5-1.htm) |
| [23.3](https://www.sec.gov/Archives/edgar/data/2087087/000110465925120618/tm2527016d7_ex5-2.htm) | [Consent of Latham & Watkins LLP (included on Exhibit 5.2).\*](https://www.sec.gov/Archives/edgar/data/2087087/000110465925120618/tm2527016d7_ex5-2.htm) |
| [24.1](https://www.sec.gov/Archives/edgar/data/2087087/000110465925094778/none-20250929xs1.htm#SIGNATURES_543920) | [Power of Attorney (included on the signature page of the initial filing of this Registration Statement).\*](https://www.sec.gov/Archives/edgar/data/2087087/000110465925094778/none-20250929xs1.htm#SIGNATURES_543920) |
| [99.1](https://www.sec.gov/Archives/edgar/data/2087087/000110465925094778/none-20250929xex99d1.htm) | [Consent of Russell Galbut.\*](https://www.sec.gov/Archives/edgar/data/2087087/000110465925094778/none-20250929xex99d1.htm) |
| [99.2](https://www.sec.gov/Archives/edgar/data/2087087/000110465925094778/none-20250929xex99d2.htm) | [Consent of Robert Moore.\*](https://www.sec.gov/Archives/edgar/data/2087087/000110465925094778/none-20250929xex99d2.htm) |
| [99.3](https://www.sec.gov/Archives/edgar/data/2087087/000110465925094778/none-20250929xex99d3.htm) | [Consent of Patsy Chan.\*](https://www.sec.gov/Archives/edgar/data/2087087/000110465925094778/none-20250929xex99d3.htm) |
| [99.4](https://www.sec.gov/Archives/edgar/data/2087087/000110465925094778/none-20250929xex99d4.htm) | [Consent of Sammy Hsieh.\*](https://www.sec.gov/Archives/edgar/data/2087087/000110465925094778/none-20250929xex99d4.htm) |
| [107](https://www.sec.gov/ix?doc=/Archives/edgar/data/2087087/000110465925094778/none-20250929xexfees.htm) | [Filing Fee Table.\*](https://www.sec.gov/ix?doc=/Archives/edgar/data/2087087/000110465925094778/none-20250929xexfees.htm) |

---

# Filed herewith.

\* Previously filed.

**Item 17.** **Undertakings.**

(a) The undersigned registrant
 hereby undertakes to provide to the underwriters at the closing specified in the underwriting
 agreements, certificates in such denominations and registered in such names as required by
 the underwriters to permit prompt delivery to each purchaser.

(b) Insofar as indemnification
 for liabilities arising under the Securities Act of 1933 may be permitted to directors, officers
 and controlling persons of the registrant pursuant to the foregoing provisions, or otherwise,
 the registrant has been advised that in the opinion of the Securities and Exchange Commission
 such indemnification is against public policy as expressed in the Act and is, therefore,
 unenforceable. In the event that a claim for indemnification against such liabilities (other
 than the payment by the registrant of expenses incurred or paid by a director, officer or
 controlling person of the registrant in the successful defense of any action, suit or proceeding)
 is asserted by such director, officer or controlling person in connection with the securities
 being registered, the registrant will, unless in the opinion of its counsel the matter has
 been settled by controlling precedent, submit to a court of appropriate jurisdiction the
 question whether such indemnification by it is against public policy as expressed in the
 Act and will be governed by the final adjudication of such issue.

(c) The undersigned registrant
 hereby undertakes that:

&nbsp;&nbsp;&nbsp;&nbsp;(1) For purposes of determining
 any liability under the Securities Act of 1933, the information omitted from the form of
 prospectus filed as part of this registration statement in reliance upon Rule 430A and
 contained in a form of prospectus filed by the registrant pursuant to Rule 424(b)(1) or
 (4) or 497(h) under the Securities Act shall be deemed to be part of this registration
 statement as of the time it was declared effective.

&nbsp;&nbsp;&nbsp;&nbsp;(2) For the purpose of determining
 any liability under the Securities Act of 1933, each post-effective amendment that contains
 a form of prospectus shall be deemed to be a new registration statement relating to the securities
 offered therein, and the offering of such securities at that time shall be deemed to be the
 initial *bona fide* offering thereof.

&nbsp;&nbsp;&nbsp;&nbsp;(3) For the purpose of determining
 liability under the Securities Act of 1933 of any purchaser, if the registrant is subject
 to Rule 430C, each prospectus filed pursuant to Rule 424(b) as part of a registration
 statement relating to an offering, other than registration statements relying on Rule 430B
 or other than prospectuses filed in reliance on Rule 430A, shall be deemed to be part
 of and included in the registration statement as of the date it is first used after effectiveness.
 Provided, however, that no statement made in a registration statement or prospectus that
 is part of the registration statement or made in a document incorporated or deemed incorporated
 by reference into the registration statement or prospectus that is part of the registration
 statement will, as to a purchaser with a time of contract of sale prior to such first use,
 supersede or modify any statement that was made in the registration statement or prospectus
 that was part of the registration statement or made in any such document immediately prior
 to such date of first use.

&nbsp;&nbsp;&nbsp;&nbsp;(4) For the purpose of determining
 liability of a registrant under the Securities Act of 1933 to any purchaser in the initial
 distribution of the securities, the undersigned registrant undertakes that in a primary offering
 of securities of an undersigned registrant pursuant to this registration statement, regardless
 of the underwriting method used to sell the securities to the purchaser, if the securities
 are offered or sold to such purchaser by means of any of the following communications, the
 undersigned registrant will be a seller to the purchaser and will be considered to offer
 or sell such securities to such purchaser:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(i) any preliminary prospectus
 or prospectus of the undersigned registrant relating to the offering required to be filed
 pursuant to Rule 424;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(ii) any free writing prospectus
 relating to the offering prepared by or on behalf of the undersigned registrant or used or
 referred to by an undersigned registrant;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(iii) the portion of any other
 free writing prospectus relating to the offering containing material information about the
 undersigned registrant or its securities provided by or on behalf of the undersigned registrant;
 and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(iv) any other communication
 that is an offer in the offering made by the undersigned registrant to the purchaser.

**SIGNATURES**

Pursuant to the requirements of the Securities Act of 1933, as amended, the registrant has duly caused this Registration Statement to be signed on its behalf by the undersigned, thereunto duly authorized, in the Hong Kong Special Administrative Region of the People's Republic of China, on the 5th day of January, 2026.

---

| | | |
|:---|:---|:---|
| **BLACK SPADE ACQUISITION III CO** | **BLACK SPADE ACQUISITION III CO** | **BLACK SPADE ACQUISITION III CO** |
| By: | /s/ Chi Wai Dennis Tam | /s/ Chi Wai Dennis Tam |
|  | Name: | Chi Wai Dennis Tam |
|  | Title: | Executive Chairman and Co-Chief Executive Officer |

---

Pursuant to the requirements of the Securities Act of 1933, as amended, this Registration Statement has been signed below by the following persons in the capacities and on the dates indicated.

---

| | | |
|:---|:---|:---|
| **Name** | **Position** | **Date** |
| /s/ Chi Wai Dennis Tam | Executive Chairman of the Board and Co-Chief Executive Officer | January 5, 2026 |
| Chi Wai Dennis Tam | (Principal Executive Officer) |  |
| /s/ Shing Joe Kester Ng | Director, Co-Chief Executive Officer and Chief Financial Officer | January 5, 2026 |
| Shing Joe Kester Ng | (Principal Financial and Accounting Officer) |  |
| /s/ Richard Kirby Taylor | Director, Co-Chief Executive Officer | January 5, 2026 |
| Richard Kirby Taylor | and Chief Operating Officer |  |

---

**AUTHORIZED REPRESENTATIVE**

Pursuant to the requirements of Section 6(a) of the Securities Act of 1933, the undersigned has signed this registration statement, solely in its capacity as the duly authorized representative of Black Spade Acquisition III Co, in the City of New York, New York, on the 5th day of January, 2026.

---

| | | |
|:---|:---|:---|
| **U.S. DULY AUTHORIZED REPRESENTATIVE COGENCY GLOBAL INC.** | **U.S. DULY AUTHORIZED REPRESENTATIVE COGENCY GLOBAL INC.** | **U.S. DULY AUTHORIZED REPRESENTATIVE COGENCY GLOBAL INC.** |
| By: | /s/ Colleen A. De Vries | /s/ Colleen A. De Vries |
|  | Name: | Colleen A. De Vries |
|  | Title: | Senior Vice President |

---

## Exhibit 23.1

**Exhibit 23.1**

**Consent of Independent Registered Public Accounting Firm**

We hereby consent to the use in the Prospectus constituting a part of this Registration Statement on Amendment No. 4 to Form S-1 of our report dated September 29, 2025 relating to the financial statements of Black Spade Acquisition III Co as of September 5, 2025 and for the period from August 21, 2025 (inception) through September 5, 2025, which is included in that Prospectus. We also consent to the reference to our firm under the caption "Experts" in the Prospectus.

/s/ WithumSmith+Brown, PC

New York, New York

January 5, 2026