SilverBox Sponsor V LLC - 02 Dec 2025 Form 3 Insider Report for SilverBox Corp V (SBXE)

Reporting relationship: 10%+ Owner
Issuer ticker: SBXE
Reported as of: 02 Dec 2025
Net transaction value: $0
SEC form: 3
Accepted by SEC: 02 Dec 2025, 17:44:54 UTC
Source filing: View source filing
Reporting owner signature: /s/ Joseph Reece, as Authorized Signatory of Boxwood Holdings V LLC, the managing member of SilverBox Sponsor V LLC

Key filing fact

SilverBox Sponsor V LLC filed Form 3 for SilverBox Corp V (SBXE) on 02 Dec 2025.

Key facts

This page summarizes SilverBox Sponsor V LLC's Form 3 filing for SilverBox Corp V (SBXE).
0 reported transactions and 1 derivative row are listed below.
Accepted by SEC: 02 Dec 2025, 17:44.

Change

No earlier filing in this sequence is available for direct comparison.
Current net transaction value: $0.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Official SEC source

Ownership activity is grounded in SEC Form 3 disclosures.

View source filing

Reporting Owners (3)

CIK 0002086706 Primary reporting owner

SilverBox Sponsor V LLC

Relationship: 10%+ Owner
Address: 8701 BEE CAVE ROAD, EAST BUILDING, SUITE 310, AUSTIN
Signature: /s/ Joseph Reece, as Authorized Signatory of Boxwood Holdings V LLC, the managing member of SilverBox Sponsor V LLC
Signature date: 02 Dec 2025

CIK 0001659413

Reece Joseph E

Relationship: Founding Partner, 10%+ Owner
Address: 8701 BEE CAVE ROAD, EAST BUILDING, SUITE 310, AUSTIN
Signature: /s/ Joseph Reece
Signature date: 02 Dec 2025

CIK 0001519030

Kadenacy Stephen M

Relationship: Chairman and CEO, Director, Director, 10%+ Owner
Address: 8701 BEE CAVE ROAD, EAST BUILDING, SUITE 310, AUSTIN
Signature: /s/ Stephen Kadenacy
Signature date: 02 Dec 2025

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

SBXE holding

Class A ordinary shares

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 195,000
Date: 02 Dec 2025
Ownership: Direct
Footnotes: F1

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

SBXE holding Derivative

Class B ordinary shares

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after
Date: 02 Dec 2025
Ownership: Direct
Underlying class: Class A ordinary shares
Underlying amount: 6,900,000
Exercise price
Footnotes: F2, F3, F4

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 4 footnotes

Footnote F1

Represents Class A ordinary shares, par value $0.0001 per share, of the Issuer (the "Private Placement Shares") that are included in the 195,000 private placement units (the "Private Placement Units") that will be purchased by SilverBox Sponsor V LLC (the "Sponsor") from the Issuer in a private placement at $10.00 per Private Placement Unit, as described in the Issuer's registration statement on Form S-1 (File No. 333-289783) (the "Registration Statement"). Each Private Placement Unit is comprised of one Private Placement Share and one-third of one redeemable warrant (the "Private Placement Warrants"), each whole Private Placement Warrant exercisable to purchase one Private Placement Share. Does not represent any Private Placement Shares issuable upon the exercise of Private Placement Warrants.

Footnote F2

As described in the Registration Statement under the heading "Description of Securities - Founder Shares", the Class B ordinary shares will automatically convert into Class A ordinary shares 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.

Footnote F3

These shares represent Class B ordinary shares held by the Sponsor, acquired pursuant to a subscription agreement by and between the Sponsor and the Issuer. The Class B ordinary shares owned by the reporting persons includes up to 900,000 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.

Footnote F4

The Sponsor is the record holder of the shares reported herein. Boxwood Holdings V LLC is the managing member of the Sponsor, 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 V LLC. As such, they may be deemed to have or share beneficial ownership of the Class B ordinary shares held directly by the Sponsor. 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.