# EDGAR Filing Document

**Accession Number:** 0001659413
**File Stem:** 0001104659-23-026221
**Filing Date:** 2023-2
**Character Count:** 10738
**Document Hash:** daa843fdf73ee91d5672aa34b00c86b7
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001104659-23-026221.hdr.sgml**: 20230227

**ACCESSION NUMBER**: 0001104659-23-026221

**CONFORMED SUBMISSION TYPE**: 3

**PUBLIC DOCUMENT COUNT**: 1

**CONFORMED PERIOD OF REPORT**: 20230227

**FILED AS OF DATE**: 20230227

**DATE AS OF CHANGE**: 20230227

**REPORTING-OWNER**: 

**OWNER DATA:**
- **COMPANY CONFORMED NAME:** Kadenacy Stephen M
- **CENTRAL INDEX KEY:** 0001519030

**FILING VALUES:**
- **FORM TYPE:** 3
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-41632
- **FILM NUMBER:** 23677850

**MAIL ADDRESS:**
- **STREET 1:** C/O AECOM TECHNOLOGY CORPORATION
- **STREET 2:** 555 S. FLOWER STREET, SUITE 3700
- **CITY:** LOS ANGELES
- **STATE:** CA
- **ZIP:** 90071
**REPORTING-OWNER**: 

**OWNER DATA:**
- **COMPANY CONFORMED NAME:** Reece Joseph E
- **CENTRAL INDEX KEY:** 0001659413

**FILING VALUES:**
- **FORM TYPE:** 3
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-41632
- **FILM NUMBER:** 23677851

**MAIL ADDRESS:**
- **STREET 1:** ONE VALERO WAY
- **STREET 2:** BUILDING D, SUITE 200
- **CITY:** SAN ANTONIO
- **STATE:** TX
- **ZIP:** 78249
**REPORTING-OWNER**: 

**OWNER DATA:**
- **COMPANY CONFORMED NAME:** BOXWOOD HOLDINGS II LLC
- **CENTRAL INDEX KEY:** 0001967322
- **STATE OF INCORPORATION:** DE

**FILING VALUES:**
- **FORM TYPE:** 3
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-41632
- **FILM NUMBER:** 23677852

**BUSINESS ADDRESS:**
- **STREET 1:** 1250 S. CAPITAL OF TEXAS HIGHWAY
- **STREET 2:** BUILDING 2, SUITE 285
- **CITY:** AUSTIN
- **STATE:** TX
- **ZIP:** 78746
- **BUSINESS PHONE:** 5125753637

**MAIL ADDRESS:**
- **STREET 1:** 1250 S. CAPITAL OF TEXAS HIGHWAY
- **STREET 2:** BUILDING 2, SUITE 285
- **CITY:** AUSTIN
- **STATE:** TX
- **ZIP:** 78746
**REPORTING-OWNER**: 

**OWNER DATA:**
- **COMPANY CONFORMED NAME:** SilverBox Engaged Sponsor III LLC
- **CENTRAL INDEX KEY:** 0001859863

**FILING VALUES:**
- **FORM TYPE:** 3
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-41632
- **FILM NUMBER:** 23677853

**BUSINESS ADDRESS:**
- **STREET 1:** 1250 S. CAPITAL OF TEXAS HIGHWAY
- **STREET 2:** BUILDING 2, SUITE 285
- **CITY:** AUSTIN
- **STATE:** TX
- **ZIP:** 78746
- **BUSINESS PHONE:** 512-575-3637

**MAIL ADDRESS:**
- **STREET 1:** 1250 S. CAPITAL OF TEXAS HIGHWAY
- **STREET 2:** BUILDING 2, SUITE 285
- **CITY:** AUSTIN
- **STATE:** TX
- **ZIP:** 78746

**FORMER NAME:**
- **FORMER CONFORMED NAME:** SilverBox Engaged Sponsor II LLC
- **DATE OF NAME CHANGE:** 20210429
**ISSUER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** SilverBox Corp III
- **CENTRAL INDEX KEY:** 0001859686
- **STANDARD INDUSTRIAL CLASSIFICATION:** BLANK CHECKS [6770]
- **IRS NUMBER:** 862754279

**BUSINESS ADDRESS:**
- **STREET 1:** 1250 S. CAPITAL OF TEXAS HIGHWAY
- **STREET 2:** BUILDING 2, SUITE 285
- **CITY:** AUSTIN
- **STATE:** TX
- **ZIP:** 78746
- **BUSINESS PHONE:** 512-575-3637

**MAIL ADDRESS:**
- **STREET 1:** 1250 S. CAPITAL OF TEXAS HIGHWAY
- **STREET 2:** BUILDING 2, SUITE 285
- **CITY:** AUSTIN
- **STATE:** TX
- **ZIP:** 78746

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** SilverBox Engaged Corp II
- **DATE OF NAME CHANGE:** 20210429

### 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>SilverBox Engaged Sponsor III LLC<br><sub>(Last) (First) (Middle)</sub><br>1250 S. CAPITAL OF TEXAS HIGHWAY<br>BUILDING 2, SUITE 285<br><sub>(Street)</sub><br>AUSTIN, TX 78746<br><sub>(City) (State) (Zip)</sub> | **3. Issuer Name and Ticker or Trading Symbol**<br>SilverBox Corp III [ SBXC ] | **5. If Amendment, Date of Original Filed (Month/Day/Year)**<br>  |
| **2. Date of Event Requiring Statement (Month/Day/Year)**<br>2023-02-27 | **4. Relationship of Reporting Person(s) to Issuer**<br>(Check all applicable)<br>[ ] Director   [X] 10% Owner<br>[ ] Officer (give title below)   [ ] Other (specify below)<br>_ _ | **6. Individual or Joint/Group Filing (Check Applicable Line)**<br>[ ] Form filed by One Reporting Person<br>[X] Form filed by More than One Reporting Person |

---

---

| | | |
|:---|:---|:---|
| **1. Name and Address of Reporting Person**<sup>*</sup><br>BOXWOOD HOLDINGS II LLC<br><sub>(Last) (First) (Middle)</sub><br>C/O SILVERBOX SPONSOR III, 1250 S,<br>CAPITAL OF TEXAS HIGHWAY, BUILDING 2.<br><sub>(Street)</sub><br>AUSTIN, TX 78746<br><sub>(City) (State) (Zip)</sub> | **3. Issuer Name and Ticker or Trading Symbol**<br>SilverBox Corp III [ SBXC ] | **5. If Amendment, Date of Original Filed (Month/Day/Year)**<br>  |
| **2. Date of Event Requiring Statement (Month/Day/Year)**<br>2023-02-27 | **4. Relationship of Reporting Person(s) to Issuer**<br>(Check all applicable)<br>[ ] Director   [X] 10% Owner<br>[ ] Officer (give title below)   [ ] Other (specify below)<br>_ _ | **6. Individual or Joint/Group Filing (Check Applicable Line)**<br>[ ] Form filed by One Reporting Person<br>[X] Form filed by More than One Reporting Person |

---

---

| | | |
|:---|:---|:---|
| **1. Name and Address of Reporting Person**<sup>*</sup><br>Reece Joseph E<br><sub>(Last) (First) (Middle)</sub><br>1250 S. CAPITAL OF TEXAS HIGHWAY<br>BUILDING 2, SUITE 285<br><sub>(Street)</sub><br>AUSTIN, TX 78746<br><sub>(City) (State) (Zip)</sub> | **3. Issuer Name and Ticker or Trading Symbol**<br>SilverBox Corp III [ SBXC ] | **5. If Amendment, Date of Original Filed (Month/Day/Year)**<br>  |
| **2. Date of Event Requiring Statement (Month/Day/Year)**<br>2023-02-27 | **4. Relationship of Reporting Person(s) to Issuer**<br>(Check all applicable)<br>[ ] Director   [X] 10% Owner<br>[X] Officer (give title below)   [ ] Other (specify below)<br>_Founding Partner_ | **6. Individual or Joint/Group Filing (Check Applicable Line)**<br>[ ] Form filed by One Reporting Person<br>[X] Form filed by More than One Reporting Person |

---

---

| | | |
|:---|:---|:---|
| **1. Name and Address of Reporting Person**<sup>*</sup><br>Kadenacy Stephen M<br><sub>(Last) (First) (Middle)</sub><br>1250 S. CAPITAL OF TEXAS HIGHWAY<br>BUILDING 2, SUITE 285<br><sub>(Street)</sub><br>AUSTIN, TX 78746<br><sub>(City) (State) (Zip)</sub> | **3. Issuer Name and Ticker or Trading Symbol**<br>SilverBox Corp III [ SBXC ] | **5. If Amendment, Date of Original Filed (Month/Day/Year)**<br>  |
| **2. Date of Event Requiring Statement (Month/Day/Year)**<br>2023-02-27 | **4. Relationship of Reporting Person(s) to Issuer**<br>(Check all applicable)<br>[X] Director   [X] 10% Owner<br>[X] Officer (give title below)   [ ] Other (specify below)<br>_Chairman & Chief Exec. Officer_ | **6. Individual or Joint/Group Filing (Check Applicable Line)**<br>[ ] Form filed by One Reporting Person<br>[X] 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 Common Stock | <sup>(1)</sup> | <sup>(1)</sup> | Class A Common Stock | 3450000<sup>(2)(3)</sup> | <sup>(1)</sup> | D |  |

---

### Footnotes:

(1) As described in the issuer's registration statement on Form S-1 (File No. 333-269713) under the heading "Description of Securities - Founder Shares", the shares of Class B common stock will automatically convert into shares of Class A common stock at the time of the issuer's initial business combination, on a one-for-one basis, subject to adjustment for stock splits, stock dividends, reorganizations, recapitalizations and the like, and certain anti-dilution rights and has no expiration date.

(2) These shares represent Class B common stock held SilverBox Sponsor III LLC, acquired pursuant to a subscription agreement by and between SilverBox Sponsor III LLC and the issuer. The Class B common stock owned by the reporting person includes up to 450,000 shares that are subject to forfeiture in the event the underwriters of the initial public offering of the issuer's securities do not exercise in full their over-allotment option as described in the issuer's registration statement.

(3) SilverBox Sponsor III LLC is the record holder of the shares reported herein. Boxwood Holdings II LLC is the managing member of SilverBox Sponsor III LLC, Mr. Kadenacy, the issuer's Chairman and Chief Executive Officer and Mr. Reece, the issuer's Founding Partner, are each a principal of Boxwood Holdings II LLC. As such, they may be deemed to have or share beneficial ownership of the Class B common stock held directly by SilverBox Sponsor III LLC. Each such person disclaims any beneficial ownership of the reported shares other than to the extent of any pecuniary interests they may have therein, directly or indirectly.

**Signature:** /s/ Joseph Reece, as Authorized Signatory of Boxwood Holdings II LLC, the managing member of SilverBox Sponsor III LLC  
**Date:** 2023-02-27

**Signature:** /s/ Joseph Reece, as Authorized Signatory of Boxwood Holdings II LLC  
**Date:** 2023-02-27

**Signature:** /s/ Joseph Reece  
**Date:** 2023-02-27

**Signature:** /s/ Stephen Kadenacy  
**Date:** 2023-02-27

### 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.**