SilverBox Corp IV's NYSE Trading Suspended Sept. 25

NYSE trading is suspended; SilverBox’s units, Class A ordinary shares and warrants may be quoted and traded OTC effective September 28, 2026.

Filing Impact

(High)

Filing Sentiment

(Negative)

Form Type

8-K

Rhea-AI Filing Summary

SilverBox Corp IV received notice from NYSE Regulation on September 25, 2026, that staff had determined to commence proceedings to delist its units, Class A ordinary shares and warrants. Staff determined the company had fallen below the continued-listing standard requiring an acquisition company to maintain average aggregate global market capitalization attributable to its publicly-held shares of at least $40,000,000 over a consecutive 30 trading day period.

NYSE trading in the securities was suspended as of September 25, 2026. SilverBox has a right to review the determination by a Committee of the NYSE Board of Directors, while the SEC delisting application is pending completion of applicable procedures, including any company appeal. Effective September 28, 2026, the securities may be quoted and traded in the OTC market under SBXD.U, SBXD and SBXD.WS, respectively.

Positive

None.

Negative

NYSE suspended trading in units, shares and warrants September 25, 2026.

Insights

Analyzing...

8-K Event Classification

Item 3.01 — Notice of Delisting or Failure to Satisfy a Continued Listing Rule or Standard; Transfer of Listing

1 item

Item 3.01 Notice of Delisting or Failure to Satisfy a Continued Listing Rule or Standard; Transfer of Listing Securities

The company received a delisting notice, failed to satisfy a continued-listing rule or standard, or transferred its listing.

Key Figures

Continued-listing market capitalization threshold: $40,000,000 Measurement period: 30 trading days NYSE trading suspension: September 25, 2026 +2 more

5 metrics

Continued-listing market capitalization threshold $40,000,000 At least this average aggregate global market capitalization attributable to publicly-held shares was required.

Measurement period 30 trading days Consecutive period for the continued-listing market capitalization standard.

NYSE trading suspension September 25, 2026 Trading in the units, Class A ordinary shares and warrants was suspended as of this date.

OTC quotation and trading September 28, 2026 Effective date from which the securities may be quoted and traded in the OTC market.

Warrant exercise price $11.50 per whole warrant Each whole warrant is exercisable for one Class A ordinary share.

Key Terms

continued listing standard, average aggregate global market capitalization, over-the-counter (“OTC”) market, redeemable warrant

4 terms

continued listing standard regulatory

"continued listing standard requiring a listed acquisition company"

Continued listing standards are the ongoing rules a stock exchange or trading venue requires a company to meet to keep its shares listed, such as minimum share price, market value, shareholder equity, and timely financial reporting. For investors, these standards matter because failure to meet them can trigger warnings or removal from the exchange, which can reduce a stock’s visibility, trading liquidity, and value—similar to how failing building inspections can limit a business’s ability to operate publicly.

average aggregate global market capitalization financial

"average aggregate global market capitalization attributable to its publicly-held shares"

over-the-counter (“OTC”) market market

"may be quoted and traded in the over-the-counter (“OTC”) market"

redeemable warrant financial

"one-third of one redeemable warrant"

A redeemable warrant is a financial tool that gives its holder the right to buy shares of a company at a fixed price within a certain period. If the holder chooses to do so, the company can buy back or cancel the warrant before it expires, often to encourage investment or manage share issuance. For investors, it provides an option to potentially buy shares at a favorable price while offering some flexibility for the issuing company.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What OTC tickers may SilverBox Corp IV securities trade under?

Effective September 28, 2026, SilverBox Corp IV’s units, Class A ordinary shares and warrants may be quoted and traded in the OTC market under SBXD.U, SBXD and SBXD.WS, respectively.

Can SilverBox Corp IV seek review of the NYSE delisting decision?

Yes. SilverBox Corp IV has a right to review the NYSE staff determination by a Committee of the NYSE Board of Directors. The SEC application to delist the securities is pending completion of applicable procedures, including any appeal by the company.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Available on EDGAR 09/25/2026 - 05:26 PM Accepted by SEC EDGAR 09/25/2026 - 05:16 PM

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

PURSUANT TO SECTION 13 OR 15(d) OF THE
SECURITIES EXCHANGE ACT OF 1934

Date of Report (Date of earliest event reported): September 25, 2026

SILVERBOX CORP IV

(Exact name of registrant as specified in its charter)

Cayman Islands		001-42214		N/A
(State or other jurisdiction of incorporation)		(Commission File Number)		(IRS Employer Identification No.)

8701 Bee Cave Road
East Building, Suite 310
Austin, TX 78746

(Address of principal executive offices, including zip code)

Registrant’s telephone number, including area code: (512) 575-3637

Not Applicable

(Former name or former address, if changed since last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

¨	Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

¨	Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

¨	Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

¨	Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Title of each class	Trading Symbol(s)	Name of each exchange on which registered
Units, each consisting of one Class A ordinary share, $0.0001 par value, and one-third of one redeemable warrant	SBXD.U	New York Stock Exchange LLC
Class A ordinary shares included as part of the units	SBXD	New York Stock Exchange LLC
Redeemable Warrants included as part of the units, each whole warrant exercisable for one Class A ordinary share at an exercise price of $11.50	SBXD.WS	New York Stock Exchange LLC

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging growth company x

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 13(a) of the Exchange Act. ¨

Item 3.01. Notice of Delisting or Failure to Satisfy a Continued Listing Rule or Standard; Transfer of Listing.

On September 25, 2026, SilverBox Corp IV (the “Company”) received a written notice (the “Notice”) from the staff of NYSE Regulation (the “Staff”) of the New York Stock Exchange (“NYSE”) indicating that the Staff has determined to commence proceedings to delist the Company’s units (the “Units”), Class A ordinary shares and warrants from the NYSE. Each Unit consists of one Class A ordinary share, par value $0.0001 per share (the “Class A Ordinary Shares”), and one-third of one redeemable warrant, with each whole warrant exercisable for one Class A Ordinary Share of the Company (the “Warrants”). The Notice indicated that the Staff reached its decision to delist the Company’s securities pursuant to Section 802.01B of the NYSE’s Listed Company Manual because the Staff determined that the Company had fallen below the NYSE’s continued listing standard requiring a listed acquisition company to maintain an average aggregate global market capitalization attributable to its publicly-held shares over a consecutive 30 trading day period of at least $40,000,000.

The Company has a right to a review of the Staff’s determination by a Committee of the Board of Directors of the NYSE. Application to the Securities and Exchange Commission to delist the Units, Class A Ordinary Shares and Warrants is pending, subject to the completion of all applicable procedures, including any appeal by the Company of the Staff’s decision.

Trading in the Class A Ordinary Shares, Warrants and Units on the NYSE has been suspended as of the date of the Notice. Effective as of September 28, 2026, the Units, Class A Ordinary Shares, and Warrants may be quoted and traded in the over-the-counter (“OTC”) market under the ticker symbols “SBXD.U”, “SBXD” and “SBXD.WS,” respectively.

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

	SILVERBOX CORP IV

	By:	/s/ Stephen Kadenacy
	Name:	Stephen Kadenacy
	Title:	Chief Executive Officer

	Dated:	September 25, 2026

Source: View Original Filing on SEC EDGAR

Filing Exhibits & Attachments

4 documents