# EDGAR Filing Document

**Accession Number:** 0002081909
**File Stem:** 0001104659-25-117789
**Filing Date:** 2025-12
**Character Count:** 44350
**Document Hash:** 8066ddf97db11ff70605dd352942cb18
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001104659-25-117789.hdr.sgml**: 20251202

**ACCESSION NUMBER**: 0001104659-25-117789

**CONFORMED SUBMISSION TYPE**: S-1MEF

**PUBLIC DOCUMENT COUNT**: 21

**FILED AS OF DATE**: 20251202

**DATE AS OF CHANGE**: 20251202

**EFFECTIVENESS DATE**: 20251202

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** SilverBox Corp V
- **CENTRAL INDEX KEY:** 0002081909
- **STANDARD INDUSTRIAL CLASSIFICATION:** BLANK CHECKS [6770]
- **ORGANIZATION NAME:** 05 Real Estate & Construction
- **EIN:** 000000000
- **STATE OF INCORPORATION:** E9
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** S-1MEF
- **SEC ACT:** 1933 Act
- **SEC FILE NUMBER:** 333-291899
- **FILM NUMBER:** 251544191

**BUSINESS ADDRESS:**
- **STREET 1:** 8701 BEE CAVE ROAD
- **STREET 2:** EAST BUILDING, SUITE 310
- **CITY:** AUSTIN
- **STATE:** TX
- **ZIP:** 78746
- **BUSINESS PHONE:** 5125753637

**MAIL ADDRESS:**
- **STREET 1:** 8701 BEE CAVE ROAD
- **STREET 2:** EAST BUILDING, SUITE 310
- **CITY:** AUSTIN
- **STATE:** TX
- **ZIP:** 78746

**As filed with the United States Securities and Exchange Commission on December 2, 2025.**

**Registration No. 333-**

**UNITED STATES**

**SECURITIES AND EXCHANGE COMMISSION**

**Washington, D.C. 20549**

**FORM S-1**

**REGISTRATION STATEMENT**

**UNDER**

**THE SECURITIES ACT OF 1933**

**SilverBox Corp V**

(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) |

---

**8701 Bee Cave Road**

**East Building, Suite 310**

**Austin, TX 78746**

**Telephone: (512) 575-3637**

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

**Stephen Kadenacy**

**Chief Executive Officer**

**c/o SilverBox Corp V**

**8701 Bee Cave Road**

**East Building, Suite 310**

**Austin, TX 78746**

**Telephone: (512) 575-3637**

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

**Copies to:**

---

| | | | |
|:---|:---|:---|:---|
| &nbsp;&nbsp; **Jonathan Ko, Esq.<br> Paul Hastings LLP<br> 515 South Flower Street,<br> 25<sup>th</sup> Floor**<br> **Los Angeles, CA 90071<br> (213) 683-6000** | **Michael Johns<br> Michael Lockwood<br> Maples and Calder<br> (Cayman) LLP<br> P.O. Box 309, Ugland<br> House Grand Cayman<br> KY1-1104<br> Cayman Islands<br> Tel: (345) 949-8066** | **Ilir Mujalovic, Esq.<br> Allen Overy Shearman<br> Sterling US LLP<br> 599 Lexington Avenue<br> New York, NY 10022** <br> **(212)<br> 848-4000** | **William B. Nelson, Esq.<br> Allen Overy Shearman<br> Sterling US LLP<br> 800 Capitol Street, Suite<br> 2200<br> Houston, Texas 77002<br> (713) 354-4900** |

---

**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. ⌧ 333-289783

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 ¨ Non-accelerated filer x Smaller reporting company x <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 Registration Statement shall become effective upon filing with the Securities and Exchange Commission in accordance with Rule 462(b) under the Securities Act of 1933, as amended.**

**EXPLANATORY NOTE**

This Registration Statement on Form S-1 is being filed with respect to the registration of (i) 4,600,000 additional units of SilverBox Corp V, a Cayman Islands exempted company (the "Registrant"), 600,000 of which are subject to purchase upon exercise of the underwriter's option to purchase additional units of the Registrant, each consisting of one Class A ordinary share and one-third of one redeemable public warrant, and (ii) 1,533,333 Class A ordinary shares underlying the warrants included in such units, in each case pursuant to Rule 462(b) under the Securities Act of 1933, as amended, and General Instruction V to Form S-1. Each redeemable public whole warrant entitles the holder thereof to purchase one Class A ordinary share at a price of $11.50 per share, subject to certain adjustments, and only whole warrants are exercisable. This Registration Statement relates to the Registrant's Registration Statement on Form S-1, as amended (File No. 333-289783) (the "Prior Registration Statement"), initially filed by the Registrant on August 22, 2025, and declared effective by the Securities and Exchange Commission on December 2, 2025. The required opinions of counsels and related consents and accountant's consent are attached hereto and filed herewith. Pursuant to Rule 462(b), the contents of the Prior Registration Statement, including the exhibits thereto, are incorporated by reference into this Registration Statement.

**CERTIFICATION**

The Registrant hereby certifies to the Securities and Exchange Commission (the "Commission") that it has sufficient funds in the relevant account to cover the amount of such filing fee.

**PART II**

**INFORMATION NOT REQUIRED IN PROSPECTUS**

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

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(a) *Exhibits*. All exhibits filed with or incorporated by reference in the Registration Statement on Form S-1 (SEC File No. 333-289783) are incorporated by reference into, and shall be deemed a part of, this Registration Statement, and the following additional exhibits are filed herewith, as part of this Registration Statement:

---

| | |
|:---|:---|
| **Exhibit No.** | **Description** |
| [5.1](tm2532599d1_ex5-1.htm) | [Opinion of Maples and Calder (Cayman) LLP](tm2532599d1_ex5-1.htm) |
| [5.2](tm2532599d1_ex5-2.htm) | [Opinion of Paul Hastings LLP](tm2532599d1_ex5-2.htm) |
| [23.1](tm2532599d1_ex23-1.htm) | [Consent of Withum Smith+Brown, PC](tm2532599d1_ex23-1.htm) |
| [23.2](tm2532599d1_ex5-1.htm) | [Consent of Maples and Calder (Cayman) LLP (included in Exhibit 5.1)](tm2532599d1_ex5-1.htm) |
| [23.3](tm2532599d1_ex5-2.htm) | [Consent of Paul Hastings LLP (included in Exhibit 5.2)](tm2532599d1_ex5-2.htm) |
| [24](https://www.sec.gov/ix?doc=/Archives/edgar/data/2081909/000110465925081712/none-20250818xs1.htm#SIGNATURES_228008) | [Power of Attorney (included in signature page to the Registrant's Prior Registration Statement (File No. 333-289783), filed August 22, 2025.](https://www.sec.gov/ix?doc=/Archives/edgar/data/2081909/000110465925081712/none-20250818xs1.htm#SIGNATURES_228008) |
| [107](tm2532599d1_ex-filingfees.htm) | [Filing Fee Table](tm2532599d1_ex-filingfees.htm) |

---

**SIGNATURES**

Pursuant to the requirements of the Securities Act of 1933, the registrant has duly caused this registration statement to be signed on its behalf by the undersigned, thereunto duly authorized, on the 2<sup>nd</sup> day of December 2025.

---

| | | |
|:---|:---|:---|
| **SILVERBOX CORP V** | **SILVERBOX CORP V** | **SILVERBOX CORP V** |
| By: | /s/ Stephen Kadenacy | /s/ Stephen Kadenacy |
|  | Name: | Stephen Kadenacy |
|  | Title: | Chief Executive Officer |

---

---

| | | |
|:---|:---|:---|
| **Signature** | **Position** | **Date** |
| /s/ Stephen Kadenacy | Chairman and Chief Executive Officer | December 2, 2025 |
| Stephen Kadenacy | *(Principal Executive Officer)* |  |
| /s/ Daniel E. Esters | Chief Financial Officer | December 2, 2025 |
| Daniel E. Esters | *(Principal Financial and Accounting Officer)* |  |

---

## Exhibit 5.1

**Exhibit 5.1**

![](tm2532599d1_ex5-2img001.jpg)

Our ref RZP/858360-000001/84553757v3

SilverBox Corp V

PO Box 309, Ugland House

Grand Cayman

KY1-1104

Cayman Islands

2 December 2025

**SilverBox Corp V** 

We have acted as counsel as to Cayman Islands law to SilverBox Corp V (the "**Company**") in connection with the Company's registration statement on Form S-1, including all amendments or supplements thereto, filed with the United States Securities and Exchange Commission (the "**Commission**") under the United States Securities Act of 1933, as amended (the "**Act**") (including its exhibits, the "**Registration Statement**") for the purposes of, registering with the Commission under Rule 462(b) of the Act, the offering and sale to the public of an additional:

(a) up to 4,600,000 units (including 600,000 units, which the several underwriters ()"**Underwriters** "),
for whom Santander US Capital Markets LLC is acting as representative ()"**Representative** "), will have a 45-day option to
purchase from the Company to cover over-allotments, if any) ()"**Units**") at an offering price of US$10 per Unit, each Unit
consisting of:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(i) one Class A ordinary share of a par value of US$0.0001 of the Company ()"**Class A Ordinary Shares** ");
and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(ii) one-third of one redeemable warrant, each whole warrant exercisable to purchase one Class A Ordinary Share
at a price of US$11.50 per Ordinary Share ()"**Warrants** ");

(b) all Class A Ordinary Shares and Warrants issued as part of the Units; and

(c) all Class A Ordinary Shares that may be issued upon exercise of the Warrants included in the Units.

This opinion letter is given in accordance with the terms of the Legal Matters section of the Registration Statement.

![](tm2532599d1_ex5-2img002.jpg)

1 Documents Reviewed

We have reviewed originals, copies, drafts or conformed copies of the following documents:

1.1 The certificate of incorporation dated 29 May 2025 and the amended and restated memorandum and articles
of association of the Company as registered or adopted on 2 December 2025 (the "**Memorandum and Articles** ").

1.2 The written resolutions of the board of directors of the Company dated 12 November 2025 and 2 December
2025 (the "**Resolutions**") and the written resolutions of the pricing committee of the board of directors of the Company
(the "**Committee**") dated 2 December 2025 (the "**Committee Resolutions** ").

1.3 A certificate of good standing with respect to the Company issued by the Registrar of Companies (the "**Certificate of Good Standing** ").

1.4 A certificate from a director of the Company a copy of which is attached to this opinion letter (the "**Director's Certificate** ").

1.5 The Registration Statement.

1.6 A draft of the form of the unit certificate representing the Units (the "**Unit Certificate** ").

1.7 A draft of the form of the warrant agreement and the warrant certificate constituting the Warrants (the
 "**Warrant Documents** ").

1.8 A draft of the underwriting agreement between the Company and the Representative.

The documents listed in paragraphs 1.6 to 1.8 inclusive above shall be referred to collectively herein as the "**Documents**".

2 Assumptions

The following opinions are given only as to, and based on, circumstances and matters of fact existing and known to us on the date of this opinion letter. These opinions only relate to the laws of the Cayman Islands which are in force on the date of this opinion letter. In giving the following opinions, we have relied (without further verification) upon the completeness and accuracy, as at the date of this opinion letter, of the Director's Certificate and the Certificate of Good Standing. We have also relied upon the following assumptions, which we have not independently verified:

2.1 The Documents have been or will be authorised and duly executed and unconditionally delivered by or on
behalf of all relevant parties in accordance with all relevant laws (other than, with respect to the Company, the laws of the Cayman Islands).

2.2 The Documents are, or will be, legal, valid, binding and enforceable against all relevant parties in accordance
with their terms under the laws of the State of New York (the "**Relevant Law**") and all other relevant laws (other than,
with respect to the Company, the laws of the Cayman Islands).

2.3 The choice of the Relevant Law as the governing law of the Documents has been made in good faith and would
be regarded as a valid and binding selection which will be upheld by the courts of the State of New York and any other relevant jurisdiction
(other than the Cayman Islands) as a matter of the Relevant Law and all other relevant laws (other than the laws of the Cayman Islands).

2.4 Copies of documents, conformed copies or drafts of documents provided to us are true and complete copies
of, or in the final forms of, the originals.

2.5 All signatures, initials and seals are genuine.

2.6 The capacity, power, authority and legal right of all parties under all relevant laws and regulations
(other than, with respect to the Company, the laws and regulations of the Cayman Islands) to enter into, execute, unconditionally deliver
and perform their respective obligations under the Documents.

2.7 No invitation has been or will be made by or on behalf of the Company to the public in the Cayman Islands
to subscribe for any of the Units, the Warrants or the Class A Ordinary Shares.

2.8 There is no contractual or other prohibition or restriction (other than as arising under Cayman Islands
law) binding on the Company prohibiting or restricting it from entering into and performing its obligations under the Documents.

2.9 No monies paid to or for the account of any party under the Documents or any property received or disposed
of by any party to the Documents in each case in connection with the Documents or the consummation of the transactions contemplated thereby
represent or will represent proceeds of criminal conduct or criminal property or terrorist property (as defined in the Proceeds of Crime
Act (As Revised) and the Terrorism Act (As Revised), respectively).

2.10 There is nothing contained in the minute book or corporate records of the Company (which we have not inspected)
which would or might affect the opinions set out below.

2.11 There is nothing under any law (other than the laws of the Cayman Islands) which would or might affect
the opinions set out below. Specifically, we have made no independent investigation of the Relevant Law.

2.12 The Company will receive money or money's worth in consideration for the issue of the Class A Ordinary
Shares and none of the Class A Ordinary Shares were or will be issued for less than par value.

Save as aforesaid we have not been instructed to undertake and have not undertaken any further enquiry or due diligence in relation to the transaction the subject of this opinion letter.

---

| | |
|:---|:---|
| 3 | Opinions |

---

Based upon, and subject to, the foregoing assumptions and the qualifications set out below, and having regard to such legal considerations as we deem relevant, we are of the opinion that:

3.1 The Company has been duly incorporated as an exempted company with limited liability and is validly existing
and in good standing with the Registrar of Companies under the laws of the Cayman Islands.

3.2 The Class A Ordinary Shares to be offered and issued by the Company as contemplated by the Registration
Statement (including the issuance of Class A Ordinary Shares upon the exercise of the Warrants in accordance with the Warrant Documents)
have been duly authorised for issue, and when issued by the Company against payment in full of the consideration as set out in the Registration
Statement and in accordance with the terms set out in the Registration Statement (including the issuance of Class A Ordinary Shares upon
the exercise of the Warrants in accordance with the Warrant Documents), such Class A Ordinary Shares will be validly issued, fully paid
and non-assessable. As a matter of Cayman Islands law, a share is only issued when it has been entered in the register of members (shareholders).

3.3 The execution, delivery and performance of the Unit Certificate and the Warrant Documents have been authorised
by and on behalf of the Company and, once the Unit Certificate and the Warrant Documents have been executed and delivered by any director
or officer of the Company, the Unit Certificate and the Warrant Documents will be duly executed and delivered on behalf of the Company
and will constitute the legal, valid and binding obligations of the Company enforceable in accordance with their terms.

4 Qualifications

The opinions expressed above are subject to the following qualifications:

4.1 The obligations assumed by the Company under the Documents will not necessarily be enforceable in all
circumstances in accordance with their terms. In particular:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(a) enforcement may be limited by bankruptcy, insolvency, liquidation, reorganisation, readjustment of debts
or moratorium or other laws of general application relating to protecting or affecting the rights of creditors and/or contributories;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(b) enforcement may be limited by general principles of equity. For example, equitable remedies such as specific
performance may not be available, *inter alia*, where damages are considered to be an adequate remedy;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(c) where obligations are to be performed in a jurisdiction outside the Cayman Islands, they may not be enforceable
in the Cayman Islands to the extent that performance would be illegal under the laws of that jurisdiction; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(d) some claims may become barred under relevant statutes of limitation or may be or become subject to defences
of set off, counterclaim, estoppel and similar defences.

4.2 To maintain the Company in good standing with the Registrar of Companies under the laws of the Cayman
Islands, annual filing fees must be paid and returns made to the Registrar of Companies within the time frame prescribed by law.

4.3 Under Cayman Islands law, the register of members (shareholders) is *prima facie* evidence of title
to shares and this register would not record a third party interest in such shares. However, there are certain limited circumstances where
an application may be made to a Cayman Islands court for a determination on whether the register of members reflects the correct legal
position. Further, the Cayman Islands court has the power to order that the register of members maintained by a company should be rectified
where it considers that the register of members does not reflect the correct legal position. As far as we are aware, such applications
are rarely made in the Cayman Islands and for the purposes of the opinion given in paragraph 3.2, there are no circumstances or matters
of fact known to us on the date of this opinion letter which would properly form the basis for an application for an order for rectification
of the register of members of the Company, but if such an application were made in respect of the Class A Ordinary Shares, then the validity
of such shares may be subject to re-examination by a Cayman Islands court.

4.4 In this opinion letter the phrase "non-assessable" means, with respect to the issuance of shares,
that a shareholder shall not, in respect of the relevant shares and in the absence of a contractual arrangement, or an obligation pursuant
to the memorandum and articles of association, to the contrary, have any obligation to make further contributions to the Company's assets
(except in exceptional circumstances, such as involving fraud, the establishment of an agency relationship or an illegal or improper purpose
or other circumstances in which a court may be prepared to pierce or lift the corporate veil).

We hereby consent to the filing of this opinion letter as an exhibit to the Registration Statement and to the references to our firm under the headings "Legal Matters", "Risk Factors", "Shareholders' Suits" and "Enforcement of Civil Liabilities" in the prospectus included in the Registration Statement. In providing our consent, we do not thereby admit that we are in the category of persons whose consent is required under section 7 of the Act or the Rules and Regulations of the Commission thereunder.

We express no view as to the commercial terms of the Documents or whether such terms represent the intentions of the parties and make no comment with regard to warranties or representations that may be made by the Company.

The opinions in this opinion letter are strictly limited to the matters contained in the opinions section above and do not extend to any other matters. We have not been asked to review and we therefore have not reviewed any of the ancillary documents relating to the Documents and express no opinion or observation upon the terms of any such document.

This opinion letter is addressed to you and may be relied upon by you, your counsel and purchasers of Units pursuant to the Registration Statement. This opinion letter is limited to the matters detailed herein and is not to be read as an opinion with respect to any other matter.

Yours faithfully

/s/ Maples and Calder (Cayman) LLP

## Exhibit 5.2

**Exhibit 5.2**

![](tm2522760d15_ex5-1img001.jpg)

1(213) 683-6188

jonathanko@paulhastings.com

December 2, 2025

SilverBox Corp V

8701 Bee Cave Road

East Building, Suite 310

Austin, TX 78746

Re: SilverBox Corp V Registration Statement on Form S-1 Filed Pursuant to Rule 462(b)

Ladies and Gentlemen:

We have acted as United States counsel to SilverBox Corp V, a Cayman Islands special United States exempted company (the "***Company***"), in connection with the preparation and filing with the U.S. Securities and Exchange Commission (the "***Commission***"), pursuant to Rule 462(b) under the Securities Act of 1933, as amended (the "***Securities Act***"), of the Registration Statement on Form S-1 of the Company (the "***462(b) Registration Statement***") relating to the proposed underwritten public offering of up to 4,600,000 additional units of the Company (the "***Units***") (including up to 600,000 Units that may be issued and sold pursuant to the exercise of an over-allotment option granted to the Underwriter (as defined below)), with each Unit consisting of: (i) one Class A ordinary share of the Company, par value $0.0001 per share (each, a "***Class A Ordinary Share***," and the Class A Ordinary Shares underlying the Units, the "***Shares***") and (ii) one-third of one redeemable public warrant of the Company (each whole warrant, a "***Warrant***"), with each Warrant entitling the holder to purchase one Class A Ordinary Share to be issued under a Public Warrant Agreement (the "***Warrant Agreement***") to be entered into by the Company and Continental Stock Transfer & Trust Company, as warrant agent (in such capacity, the "***Warrant Agent***"), pursuant to the terms of an Underwriting Agreement (the "***Underwriting Agreement***") to be executed by the Company and Santander US Capital Markets LLC, as representative of the several underwriters named therein (collectively, the "***Underwriters***").

This opinion letter is being furnished in accordance with the requirements of Item 601(b)(5) of Regulation S-K under the Securities Act. The 462(b) Registration Statement relates to the Company's Registration Statement on Form S-1 (File No. 333-289783) (as amended, the "***Registration Statement***") including a related prospectus filed with the Registration Statement (the "***Prospectus***"), initially filed by the Company with the Commission on August 22, 2025, and declared effective by the Commission on December 2, 2025.

In connection with this opinion letter, we have examined and relied upon the Registration Statement and the 462(b) Registration Statement, the Prospectus, the form of Underwriting Agreement, the form of Warrant Agreement, the form of Unit Certificate, filed as Exhibit 4.1 to the Registration Statement (the "***Unit Certificate***"), and the originals or copies certified to our satisfaction of such records, documents, certificates, memoranda and other instruments as in our judgment are necessary or appropriate to enable us to render the opinions expressed below. In addition to the foregoing, we have examined and relied upon the accuracy of the opinion letter of Maples and Calder (Cayman) LLP, Cayman Islands counsel for the Company, dated the date hereof and filed as Exhibit 5.2 to the Registration Statement (the "***Maples Opinion***"), and made such investigations of law as we have deemed necessary or appropriate as a basis for the opinions set forth herein.

![](tm2522760d15_ex5-1img003.jpg)

![](tm2522760d15_ex5-1img002.jpg)

In such examination and in rendering the opinions expressed below, we have assumed, without independent investigation or verification: (i) the genuineness of all signatures on all agreements, instruments, corporate records, certificates and other documents submitted to us; (ii) the legal capacity, competency and authority of all persons or entities executing all agreements, instruments, corporate records, certificates and other documents submitted to us; (iii) the authenticity and completeness of all agreements, instruments, corporate records, certificates and other documents submitted to us as originals; (iv) that all agreements, instruments, corporate records, certificates and other documents submitted to us as certified, electronic, facsimile, conformed, photostatic or other copies conform to the originals thereof, and that such originals are authentic and complete; (v) the due authorization, execution and delivery of all agreements, instruments, corporate records, certificates and other documents by all parties thereto; (vi) that no documents submitted to us have been amended or terminated orally or in writing; (vii) that the statements contained in the certificates and comparable documents of public officials, officers and representatives of the Company and other persons on which we have relied for the purposes of this opinion letter are true and correct on and as of the date hereof; (viii) that the Company is a validly existing entity in the jurisdiction of its organization, in good standing in each applicable jurisdiction and has the power and authority to execute and deliver, and to perform its obligations under, the Underwriting Agreement and the Warrant Agreement and that such execution, delivery and performance does not violate any provision of the certificate of incorporation (or equivalent formation document) of the Company; (ix) that the Underwriting Agreement is the valid and binding obligation of each of the parties thereto, enforceable against such parties in accordance with its terms; (x) all documents filed as exhibits to the 462(b) Registration Statement and the Registration Statement that have not been executed will conform to the forms thereof; (xi) that at or prior to the time of the delivery of any Units, the Board of Directors of the Company shall have duly established the terms of the Units and the Shares and the Warrants included therein and duly authorized the issuance and sale of the Units and such authorization shall not have been modified or rescinded; (xii) the 462(b) Registration Statement and the Registration Statement shall have been declared effective and such effectiveness shall not have been terminated or rescinded; (xiii) the Warrant Agreement to be entered into in connection with the Warrants has been duly authorized, executed and delivered by the Warrant Agent and the Company, and is a valid, binding and enforceable agreement of each party thereto; and (xiv) the Warrant Agreement will be governed by the laws of the State of New York. As to all questions of fact material to this opinion letter and as to the materiality of any fact or other matter referred to herein, we have relied (without independent investigation or verification) upon representations and certificates or comparable documents of officers and representatives of the Company.

Based upon the foregoing, and in reliance thereon, and subject to the assumptions, exceptions, qualifications and limitations set forth herein, we are of the opinion that:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1. When the Underwriting Agreement has been duly executed and delivered by the respective parties thereto and the Units have been duly issued by the Company and executed by Continental Stock Transfer & Trust Company, as transfer agent, as contemplated by the 462(b) Registration Statement and delivered to and paid for by the Underwriters pursuant to the terms of the Underwriting Agreement, the Units will constitute valid and binding obligations of the Company, enforceable against the Company in accordance with their terms under the laws of the State of New York except as such enforceability may be limited by (i) any applicable bankruptcy, insolvency, reorganization, moratorium or similar laws affecting creditors' rights generally including, without limitation, fraudulent transfer or fraudulent conveyance laws; (ii) public policy considerations, statutes or court decisions that may limit rights to obtain exculpation, indemnification or contribution (including, without limitation, indemnification regarding violations of the securities laws and indemnification for losses resulting from a judgment for the payment of any amount other than in United States dollars); and (iii) general principles of equity (including, without limitation, concepts of materiality, reasonableness, good faith and fair dealing) and the availability of equitable remedies (including, without limitation, specific performance and equitable relief), regardless of whether considered in a proceeding in equity or at law.

![](tm2522760d15_ex5-1img002.gif)

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2. When the Underwriting Agreement and the Warrant Agreement have been duly executed and delivered by the respective parties thereto, the Units have been validly issued, paid for and delivered in accordance with the terms of the Underwriting Agreement, and the Warrants have been duly executed by the Company and duly countersigned by the Warrant Agent in accordance with the terms of the Warrant Agreement and delivered to and paid for by the Underwriters pursuant to the terms of the Underwriting Agreement, the Warrants will constitute valid and binding obligations of the Company, enforceable against the Company in accordance with their terms under the laws of the State of New York, except as such enforceability may be limited by (i) any applicable bankruptcy, insolvency, reorganization, moratorium or similar laws affecting creditors' rights generally including, without limitation, fraudulent transfer or fraudulent conveyance laws; (ii) public policy considerations, statutes or court decisions that may limit rights to obtain exculpation, indemnification or contribution (including, without limitation, indemnification regarding violations of the securities laws and indemnification for losses resulting from a judgment for the payment of any amount other than in United States dollars); and (iii) general principles of equity (including, without limitation, concepts of materiality, reasonableness, good faith and fair dealing) and the availability of equitable remedies (including, without limitation, specific performance and equitable relief), regardless of whether considered in a proceeding in equity or at law.

Without limiting any of the other limitations, exceptions, assumptions and qualifications stated elsewhere herein, we express no opinion with regard to the applicability or effect of the laws of any jurisdiction other than the laws of the State of New York as in effect on the date hereof. We are not rendering any opinion as to compliance with any federal or state antifraud law, rule or regulation relating to securities, or to the sale or issuance thereof. For the avoidance of doubt, we express no opinion herein as to any federal laws of the United States of America, as to any foreign law or regulation, as to the effect or lack of effect of any foreign law or regulation on any opinion expressed herein or as to the validity or enforceability of the certificates evidencing the Units or the Warrants under (including, without limitation, the exercise of remedies thereunder) the laws of any foreign jurisdiction. We have not acted as counsel for the Company with respect to matters of Cayman Islands law, or other applicable foreign law.

This opinion letter deals only with the specified legal issues expressly addressed herein, and you should not infer any opinion that is not explicitly stated herein from any matter addressed in this opinion letter. This opinion letter is rendered solely in connection with the offering of the Units. This opinion letter is rendered as of the date hereof, and we assume no obligation to advise you or any other person with regard to any change after the date hereof in the circumstances or the law that may bear on the matters set forth herein even if the change may affect the legal analysis or a legal conclusion or other matters in this opinion letter.

We hereby consent to the filing of this opinion letter as Exhibit 5.1 to the 462(b) Registration Statement and to the reference to our firm in the Prospectus under the heading "Legal Matters." In giving such consent, we do not hereby admit that we are within the category of persons whose consent is required under Section 7 of the Securities Act or the rules or regulations of the Commission thereunder.

Very truly yours,

/s/ Paul Hastings LLP

## Exhibit 23.1

**Exhibit 23.1**

**CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM**

We hereby consent to the incorporation by reference in this Registration Statement on Form S-1 pursuant to Rule 462(b) under the Securities Act of 1933, as amended, of our report dated August 19, 2025 (which includes an explanatory paragraph relating to SilverBox Corp V's ability to continue as a going concern), relating to the financial statements of SilverBox Corp V as of June 16, 2025, and for the period from May 29, 2025 (inception) to June 16, 2025, appearing in the Registration Statement on Form S-1, File No. 333-289783.

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| |
|:---|
| /s/ WithumSmith+Brown, PC |
| New York, New York |
| December 2, 2025 |

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## Ex-Filing

?xml version='1.0' encoding='ASCII'? EX-FILING FEES

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| |
|:---|
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; **Calculation of Filing Fee Tables**  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; **S-1**  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; **SilverBox Corp V**  |

---

---

| | | | | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|:---|:---|:---|
| | | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; **Security Type**  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; **Security Class Title**  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; **Fee Calculation or Carry Forward Rule**  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; **Amount Registered**  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; **Proposed Maximum Offering Price Per Unit**  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; **Maximum Aggregate Offering Price**  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; **Fee Rate**  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; **Amount of Registration Fee**  |
| **Newly Registered Securities** | **Newly Registered Securities** | **Newly Registered Securities** | **Newly Registered Securities** | **Newly Registered Securities** | **Newly Registered Securities** | **Newly Registered Securities** | **Newly Registered Securities** | **Newly Registered Securities** | **Newly Registered Securities** |
| Fees to be Paid | 1 | Equity | Units | 457(a) | 4600000 | $10.00 | $46000000.00 | 0.0001381 | $6352.60 |
| Fees to be Paid | 2 | Equity | Class A ordinary shares included as part of the units | 457(a) | 4600000 | $0.00 | $0.00 | 0.0001381 | $0.00 |
| Fees to be Paid | 3 | Equity | Redeemable warrants to acquire one Class A ordinary share included as part of the units | 457(a) | 1533333 | $0.00 | $0.00 | 0.0001381 | $0.00 |
| Fees to be Paid | 4 | Equity | Class A ordinary shares underlying redeemable warrants included as part of the units | 457(a) | 1533333 | $11.50 | $17633329.50 | 0.0001381 | $2435.16 |
| Fees Previously Paid |  |  |  |  |  |  |  |  |  |
| **Carry Forward Securities** | **Carry Forward Securities** | **Carry Forward Securities** | **Carry Forward Securities** | **Carry Forward Securities** | **Carry Forward Securities** | **Carry Forward Securities** | **Carry Forward Securities** | **Carry Forward Securities** | **Carry Forward Securities** |
| Carry Forward Securities |  |  |  |  |  |  |  |  |  |
|  |  |  | Total Offering Amounts: | Total Offering Amounts: | Total Offering Amounts: |  | $63633329.50  |  | $8787.76  |
|  |  |  | Total Fees Previously Paid:  | Total Fees Previously Paid:  | Total Fees Previously Paid:  |  |  |  | $0.00  |
|  |  |  | Total Fee Offsets:  | Total Fee Offsets:  | Total Fee Offsets:  |  |  |  | $0.00  |
|  |  |  | Net Fee Due:  | Net Fee Due:  | Net Fee Due:  |  |  |  | $8787.76  |

---

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; **Offering Note** <br>

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <sup>1</sup> (1.a) Each unit consisting of one Class A ordinary share and one-third of one redeemable public warrant to purchase one Class A ordinary share. (1.b) Estimated solely for the purpose of computing the registration fee pursuant to Rule 457(a) of the Securities Act. (1.c)The Registrant previously registered securities having a proposed maximum aggregate offering price of $318,166,670.50 on its Registration Statement on Form S-1, as amended (File No. 333-289783), which became effective on December 2, 2025. In accordance with Rule 462(b) under the Securities Act, an additional number of securities having a proposed maximum offering price of $63,633,333.33 is hereby registered, which includes securities issuable upon the exercise of the underwriters' over-allotment option.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <sup>2</sup> See offering note 1.b (2.a) Pursuant to Rule 416, there are also being registered an indeterminable number of additional securities as may be issued to prevent dilution resulting from share splits, share capitalizations or similar transactions. (2.b) No fee pursuant to Rule 457(g).

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <sup>3</sup> See offering notes 1.b and 2.b

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <sup>4</sup> See offering notes 1.b and 2.a

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| | |
|:---|:---|
| | |
| **Rules 457(b) and 0-11(a)(2)** | **Rules 457(b) and 0-11(a)(2)** |
| Fee Offset Claims | N/A |
| Fee Offset Sources | N/A |
| **Rule 457(p)** | **Rule 457(p)** |
| Fee Offset Claims | N/A |
| Fee Offset Sources | N/A |

---

---

| | | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|:---|
| | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; **Security Type**  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; **Security Class Title**  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; **Amount of Securities Previously Registered**  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; **Maximum Aggregate Offering Price of Securities Previously Registered**  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; **Form Type**  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; **File Number**  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; **Initial Effective Date**  |
| N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A |

---