# EDGAR Filing Document

**Accession Number:** 0002087087
**File Stem:** 0001104659-26-001446
**Filing Date:** 2026-1
**Character Count:** 5525
**Document Hash:** db04b9e3bf2b5270b008979f3b0a4a9d
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001104659-26-001446.hdr.sgml**: 20260106

**ACCESSION NUMBER**: 0001104659-26-001446

**CONFORMED SUBMISSION TYPE**: 3

**PUBLIC DOCUMENT COUNT**: 1

**CONFORMED PERIOD OF REPORT**: 20260105

**FILED AS OF DATE**: 20260106

**DATE AS OF CHANGE**: 20260106

**REPORTING-OWNER**: 

**OWNER DATA:**
- **COMPANY CONFORMED NAME:** TAM CHI WAI DENNIS
- **CENTRAL INDEX KEY:** 0001636584

**ORGANIZATION NAME:**

**FILING VALUES:**
- **FORM TYPE:** 3
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-43039
- **FILM NUMBER:** 26513259

**MAIL ADDRESS:**
- **ADDRESS IS A NON US LOCATION:** YES
- **STREET 1:** HOUSE 5, ARLES STREET,
- **STREET 2:** AVIGNON SO KWUN WUT, NEW TERRITORIES
- **CITY:** HONG KONG
- **NON US STATE TERRITORY:** HONG KONG
- **PROVINCE COUNTRY:** K3
**ISSUER**: 

**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

**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

### UNITED STATES SECURITIES AND EXCHANGE COMMISSION
**Washington, D.C. 20549**

## FORM 3

### INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

[ ] Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

---

| | | |
|:---|:---|:---|
| **1. Name and Address of Reporting Person**<sup>*</sup><br>TAM CHI WAI DENNIS<br><sub>(Last) (First) (Middle)</sub><br>SUITE 2902, 29/F, THE CENTRIUM<br>60 WYNDHAM STREET, CENTRAL<br><sub>(Street)</sub><br>HONG KONG, K3 00000<br><sub>(City) (State) (Zip)</sub> | **3. Issuer Name and Ticker or Trading Symbol**<br>Black Spade Acquisition III Co [ BIIIU ] | **5. If Amendment, Date of Original Filed (Month/Day/Year)**<br>  |
| **2. Date of Event Requiring Statement (Month/Day/Year)**<br>2026-01-05 | **4. Relationship of Reporting Person(s) to Issuer**<br>(Check all applicable)<br>[X] Director   [ ] 10% Owner<br>[X] Officer (give title below)   [ ] Other (specify below)<br>_See Remarks_ | **6. Individual or Joint/Group Filing (Check Applicable Line)**<br>[X] Form filed by One Reporting Person<br>[ ] Form filed by More than One Reporting Person |

---

## Table I - Non-Derivative Securities Beneficially Owned

---

|  |  |  |  |
| --- | --- | --- | --- |
| 1. Title of Security | 2. Amount of Securities Beneficially Owned | 3. Ownership Form | 4. Nature of Indirect Beneficial Ownership |

---

## Table II - Derivative Securities Beneficially Owned

---

|  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- |
| 1. Title of Derivative Security | 2. Date Exercisable and Expiration Date (Month/Day/Year) | 2. Date Exercisable and Expiration Date (Month/Day/Year) | 3. Title and Amount of Underlying Securities | 3. Title and Amount of Underlying Securities | 4. Conversion or Exercise Price | 5. Ownership Form | 6. Nature of Indirect Beneficial Ownership |
| 1. Title of Derivative Security | Date Exercisable | Expiration Date | Title | Amount or Number of Shares | 4. Conversion or Exercise Price | 5. Ownership Form | 6. Nature of Indirect Beneficial Ownership |
| Class B ordinary shares<sup>(1)</sup> | <sup>(1)</sup> | <sup>(1)</sup> | Class A ordinary shares<sup>(1)</sup> | 200000<sup>(1)(2)</sup> | <sup>(1)</sup> | D |  |

---

### Footnotes:

(1) The Class B ordinary shares of the issuer will automatically convert into Class A ordinary shares of the issuer on a one-for-one basis (subject to certain adjustments, including share sub-divisions, share capitalizations, reorganizations, recapitalizations and other transactions) concurrently with or immediately following the consummation of the issuer's initial business combination, as described in the section entitled "Description of Securities" in the issuer's registration statement on Form S-1 (File No. 333-290602) filed with the Securities and Exchange Commission on September 30, 2025. The Class B ordinary shares have no expiration date.

(2) Up to 26,087 of the Class B ordinary shares reported herein will be surrendered to the issuer for no consideration after the closing of the initial public offering depending on the extent to which the underwriters' over-allotment option is exercised.

**Remarks:**
01/06/2026

**Signature:** /s/ Tam Chi Wai Dennis  
**Date:** 2026-01-06

### Remarks:

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).

** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).

Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.

**Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.**