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BCS

Current Report · Items 7.01, 9.01 · 8-K

SILVERBOX CORP IV

Regulation FD Disclosure

Item 7.01 Regulation FD. Attached as Exhibit 99.1 and incorporated herein by reference is the investor presentation for use by SilverBox Corp IV, a Cayman Islands exempted company (the “Company”), in meetings with certain of its shareholders as well as other persons with respect to the transactions contemplated by that certain Business Combination Agreement, dated as of August 5, 2025, as amended on May 1, 2026.…

Filed May 12, 2026Accepted May 12, 2026, 4:10 PM EDTCIK 2015947Accession 0001104659-26-059390
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Company context

SilverBox Corp IV is a special purpose acquisition company (“SPAC”) sponsored by an affiliate of SilverBox Capital and formed as part of an institutional platform to sponsor a series of SPACs. SBXD completed its $200 million initial public offering in August 2024 and its stock currently trades on NYSE under the ticker “SBXD.” SilverBox Capital is a strategic investment and advisory firm that brings together capital, advice and operating expertise in a single, aligned platform. Learn more at www.sbcap.com.

Current securities

Historical securities (3)

Recent company filings

  1. SCHEDULE 13G/A - filed by BERKLEY W R CORP regarding SilverBox Corp IVNov 9, 2026
  2. SCHEDULE 13G/A - filed by BARCLAYS PLC regarding SilverBox Corp IVNov 6, 2026
  3. 25-NSE - filed by NEW YORK STOCK EXCHANGE LLC regarding SilverBox Corp IVOct 13, 2026
  4. SCHEDULE 13G - filed by CALAMOS INVESTMENT TRUST/IL regarding SilverBox Corp IVOct 9, 2026
  5. Other EventsSep 28, 2026

Registered securities in this filing

SILVERBOX CORP IV · 8-K · Filed 2026-05-12

As filed in this accession. Current/historical status below comes from the governed listing record; the cover itself remains exact to this filing.

Units, each consisting of one Class A ordinary share, $0.0001 par value, and one-third of one redeemable warrant

Symbol
SBXD.U
Exchange
NYSE
Classification
UNIT
Filing context

Context: From2026-05-122026-05-12_custom_UnitsEachConsistingOfOneClassaOrdinaryShare0.0001ParValueAndOnethirdOfOneRedeemableWarrantMember

Dimensions: us-gaap:StatementClassOfStockAxis

Class A ordinary shares included as part of the units

Symbol
SBXD
Exchange
NYSE
Classification
UNIT
Status
Historical · closed Sep 25, 2026
Filing context

Context: From2026-05-122026-05-12_custom_ClassaOrdinarySharesIncludedAsPartOfUnitsMember

Dimensions: us-gaap:StatementClassOfStockAxis

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

Symbol
SBXD.WS
Exchange
NYSE
Classification
UNIT
Filing context

Context: From2026-05-122026-05-12_custom_RedeemableWarrantsIncludedAsPartOfUnitsEachWholeWarrantExercisableForOneClassaOrdinaryShareAtExercisePriceOf11.50Member

Dimensions: us-gaap:StatementClassOfStockAxis

Accession 000110465926059390 · 3 registered-security cover members

Read the exact SEC filing ↗

Disclosure sections

Items 7.01, 9.01

Select an item to read the extracted section. The as-filed document remains the primary evidence.

Item 7.01Item 7.01 - Regulation FD Disclosure
Item 7.01 Regulation FD. Attached as Exhibit 99.1 and incorporated herein by reference is the investor presentation for use by SilverBox Corp IV, a Cayman Islands exempted company (the “Company”), in meetings with certain of its shareholders as well as other persons with respect to the transactions contemplated by that certain Business Combination Agreement, dated as of August 5, 2025, as amended on May 1, 2026. The information in this Item 7.01, including Exhibit 99.1, is furnished and shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to liabilities under that section, and shall not be deemed to be incorporated by reference into the filings of the Company under the Securities Act of 1933, as amended, or the Exchange Act, regardless of any general incorporation language in such filings. This Current Report on Form 8-K will not be deemed an admission as to the materiality of any information contained in this Item 7.01, including Exhibit 99.1.
Filed exhibits (1)
EX-99.1 (by filename) tm2524487d22_ex99-1.htm

EX-99.1 2 tm2524487d22_ex99-1.htm EXHIBIT 99.1 Exhibit 99.1 STRICTLY CONFIDENTIAL Parataxis Holdings, Inc. Investor Presentation May 2026 An Institutional Digital Asset Management Platform General This presentation (this “Presentation”) is for informational purposes only to assist interested parties in making their own evaluation with respect to the proposed business combination (the “Business Combination”) and other transactions (together with the Business Combination, the “Transactions”) among SilverBox Corp IV (“SBXD”), Parataxis Holdings LLC (“Parataxis Holdings” or the “Company”), and Parataxis Holdings Inc., a newly formed holding company that will become the publicly listed company (“ PubCo ”, and together with SBXD and the Company, the “Parties”). The information contained herein does not purport to be all - inclusive and none of SBXD, the Company or their respective affiliates makes any representation or warranty, express or implied, as to the accuracy, completeness or reliability of the information contained in this Presentation. Neither the Company nor SBXD has verified, or will verify, any part of this Presentation. The recipient should make its own independent in…

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