SilverBox Corp IVSBXD
Cash in trust
$217.1M
$217,134,228
Trust per share
—
Redemption value
IPO
Aug 2024
—
Combination deadline
Apr 15, 2027
223 days remaining
Filings on record
93
Latest Aug 12, 2026
Business combination
- Target
- Not disclosed in an indexed filing
- Announced
- Aug 7, 2025
Overview
SilverBox Corp IV is a special purpose acquisition company incorporated and registered with the SEC under CIK 0002015947. It completed its initial public offering in Aug 2024 and listing on NYSE. Class A shares trade under the ticker SBXD, units under SBXD-UN, warrants under SBXD-WT on NYSE. The vehicle is sponsored by SilverBox through SilverBox Sponsor IV LLC. The mandate targets financial services. Definitive business-combination agreement signed, closing pending.
“we intend to focus our search for an initial business combination in a single industry.”
Reading the filings
Arithmetic on what SilverBox Corp IV has disclosed, written the way a desk would read it. These are observations, not a rating. Nothing here scores the vehicle or implies a view on it.
Time on the clock
223 days to the Apr 15, 2027 deadline. Still workable for a deal already in diligence, tight for one that has not been found. Watch for an extension proxy, which typically appears a month or two before the date.
Warrant coverage
Each unit carried one-third of one warrant per unit. Warrants are dilution deferred: they cost the holder nothing until exercised, and they overhang the post-combination share count. Thinner coverage is generally a sign of a stronger book at pricing.
Sponsor record
SilverBox has launched 3 vehicles. Of the 1 that have resolved, 0 closed a combination and 1 liquidated, a 0% completion rate. A sponsor's record is not a forecast, but it does tell you whether the team has taken a deal across the line before.
Underwriting
Santander led the offering. It has been named on 18 SPAC IPOs, book-running 15 of them, and 0% of its resolved vehicles closed a deal. The syndicate has no control over whether a sponsor finds a target, but the quality of the book at pricing shapes who ends up holding the units.
Scores
Recomputed 6m agoThree readings of SilverBox Corp IV, each an unweighted mean of the components shown beneath it, and each component a percentile against every live SPAC rather than an absolute we invented. They describe the setup, not the merit. How they are built
Edge
ModerateHow much does the structure protect a holder right now?
30/100
- Runway28
223 days
- Sponsor record33
0.0%
Edge reads the setup, not the business. A vehicle can score well on protection and still be a poor place to leave money once a deal closes.
FOMO
ModerateHow much attention is this vehicle attracting right now?
30/100
- Filing activity56
3 in 30 days
- News coverage0
0 stories in 30 days
- Deal freshness35
announced 393 days ago
Attention is not quality. FOMO rises on news volume and on the market paying above trust, both of which have preceded plenty of disappointments.
Potential
ModerateHow likely is this vehicle to complete a combination, and at what scale?
39/100
- Sponsor record33
0.0%
- Lead bank record8
0.0%
- Bank franchise14
18 SPAC mandates
- Trust scale53
$217M
- Stage85
definitive agreement signed
Potential is about execution, not about the target. It says nothing about whether the eventual deal is worth owning, because the target is usually unknown when the score is computed.
These are derived measures, not ratings of investment merit. They carry no view on the target, no price target and no recommendation, and a high score is not a reason to buy anything.
SEC filing history
Free tier: filings older than 24 hours- 10-Q
Quarterly report
Accession 0001104659-26-095033
- SCHEDULE 13G/A
Amended beneficial ownership report (passive)
Accession 0001167557-26-000159
- SCHEDULE 13G/A
Amended beneficial ownership report (passive)
Accession 0001628280-26-054461
- 425
Business-combination communication
Accession 0001104659-26-090713
- 8-K
Entry into a material definitive agreement
Items 1.01, 9.01 · Accession 0001104659-26-090712
- DEFA14A
Additional proxy soliciting material
Accession 0001104659-26-089196
- DEF 14A
Definitive proxy statement
Accession 0001104659-26-084443
- PRE 14A
PRE 14A
Accession 0001104659-26-080887
- 10-Q
Quarterly report
Accession 0001104659-26-062496
- SCHEDULE 13G
Beneficial ownership report (passive)
Accession 0000312069-26-000169
- 425
Business-combination communication
Accession 0001104659-26-059396
- 8-K
Regulation FD disclosure
Items 7.01, 9.01 · Accession 0001104659-26-059390
- SCHEDULE 13G/A
Amended beneficial ownership report (passive)
Accession 0001628280-26-032852
- 425
Business-combination communication
Accession 0001104659-26-054883
- 8-K
Entry into a material definitive agreement
Items 1.01, 9.01 · Accession 0001104659-26-054874
- 10-K
Annual report
Accession 0001104659-26-032193
- SCHEDULE 13G/A
Amended beneficial ownership report (passive)
Accession 0001193125-26-051719
- SCHEDULE 13G
Beneficial ownership report (passive)
Accession 0001104659-26-013802
- SCHEDULE 13G
Beneficial ownership report (passive)
Accession 0001628280-26-007282
- 425
Business-combination communication
Accession 0001104659-26-009883
- 425
Business-combination communication
Accession 0001104659-25-118461
- 8-K
Other events
Items 8.01, 9.01 · Accession 0001104659-25-118459
- SCHEDULE 13G/A
Amended beneficial ownership report (passive)
Accession 0000902664-25-004951
- 10-Q
Quarterly report
Accession 0001104659-25-110400
- SCHEDULE 13G/A
Amended beneficial ownership report (passive)
Accession 0000886982-25-001434
- 425
Business-combination communication
Accession 0001104659-25-107354
- 8-K
Entry into a material definitive agreement
Item 1.01 · Accession 0001104659-25-107351
- 425
Business-combination communication
Accession 0001104659-25-099537
- 425
Business-combination communication
Accession 0001104659-25-087514
- 8-K
Other events
Item 8.01 · Accession 0001104659-25-087513
SilverBox Corp IV: questions answered
What is SilverBox Corp IV (SBXD)?
SilverBox Corp IV is a special purpose acquisition company incorporated and registered with the SEC under CIK 0002015947. It completed its initial public offering in Aug 2024 and listing on NYSE. Class A shares trade under the ticker SBXD, units under SBXD-UN, warrants under SBXD-WT on NYSE. The vehicle is sponsored by SilverBox through SilverBox Sponsor IV LLC. The mandate targets financial services. Definitive business-combination agreement signed, closing pending.
How much does SilverBox Corp IV hold in trust?
Approximately $217,134,228, as at the most recent filing on record. Trust balances move: shareholders redeem at extension votes and at the combination vote, and sponsors pay contributions in to extend. Treat the figure as a point-in-time disclosure, not a running balance.
When must SilverBox Corp IV complete a merger?
By Apr 15, 2027. If no combination closes by then the sponsor must seek a further extension or wind the vehicle up and return the trust.
What happens if SilverBox Corp IV does not find a target in time?
The charter requires the vehicle to redeem 100% of the public shares and return the trust, pro rata, to public shareholders. That is the mechanism working as designed rather than a default. Founder shares and warrants are worthless in that outcome, which is why the sponsor's incentive is to get a deal done or to buy more time. Across the market, deadline lapsed without a deal; trust returned to public shareholders.
Can I redeem shares in SilverBox Corp IV, and at what price?
Public shareholders may elect to redeem in connection with a combination vote and at each extension vote, at the pro-rata trust value on the relevant record date. Redemption is a right attached to the public shares only; warrants and rights carry no claim on the trust. The mechanics and the deadline for electing are set out in the proxy statement for the vote in question.
What tickers does SilverBox Corp IV trade under?
Class A shares trade as SBXD on NYSE, the units as SBXD-UN, and the warrants as SBXD-WT. Units trade first and separate into their component securities roughly 52 days after the IPO; only the Class A shares carry the redemption right against the trust.
Is the trust value the same as the share price for SilverBox Corp IV?
No. Trust per share is a disclosed, contractual figure: what a redeeming holder receives. The market price is whatever the shares change hands at, which can sit above the trust when a deal is well received or below it when the market doubts one will close. We do not have a current quote for this vehicle, so no spread is shown.
How much dilution do SilverBox Corp IV's founder shares and warrants create?
Each unit also carried one-third of one warrant per unit, which is dilution deferred until exercise. Both are disclosed in the prospectus and both survive into the combined company, which is why a de-SPAC at $10 is not economically the same as an IPO at $10.
Who sponsors SilverBox Corp IV, and what is their track record?
SilverBox Sponsor IV LLC is the sponsor entity, part of the SilverBox franchise. That franchise has launched 3 vehicles in total, of which 0 closed a combination and 1 liquidated, a 0% completion rate on resolved vehicles. Named principals: Stephen Kadenacy.
Which banks underwrote the SilverBox Corp IV IPO?
Santander. Santander was credited as book-running manager on the cover. Syndicate membership and role are read from the prospectus cover and the underwriting section.
Is SilverBox Corp IV tradeable, and where?
Yes. SBXD returned a live quote of $10.88 on NYSE. Quotes here are delayed and refreshed on a schedule rather than streamed, so treat the figure as indicative and confirm on your own venue. Units and warrants trade under their own symbols and are quoted separately.
Is SilverBox Corp IV a good investment?
That is not a question this site answers. SilverBox Corp IV is covered here as reference data: what the company filed, when it filed it, and what the numbers in those filings say. The Edge, FOMO and Potential scores on this page are derived measures with a published formula, not ratings of investment merit: they describe the setup, and every component is shown so you can take them apart. We publish no price targets and no recommendations, and nothing here should be read as advice. The figures are a starting point for your own work, and each one carries the accession number of the filing it came from.
Where does this SilverBox Corp IV data come from?
Filings SilverBox Corp IV submitted to the SEC under CIK 0002015947: the registration statement and final prospectus for the structure, quarterly and annual reports for the trust, current reports and proxy statements for deals, votes and extensions. Trust economics are taken from the registrant's own XBRL tags rather than parsed from prose, which is why they are exact. Every filing in the history above is listed with its accession number, which identifies the document uniquely on EDGAR; Pro accounts open it directly from the row.
Compiled by the SPACListing research desk
Last reconciled Sep 4, 2026
Every figure on this page is read from documents the registrants filed with the U.S. Securities and Exchange Commission, principally the IPO prospectus (Form 424B4), quarterly and annual reports, current reports and proxy statements, the registrant's own XBRL tags for trust economics. Nothing is sourced from press coverage, from the companies themselves, or from a third-party aggregator. Where a filing does not disclose something, the field is left blank rather than estimated.
Read the full methodology · What is in the dataset · Report a correction
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Continue reading
The context around this vehicle: who else the sponsor has launched, which banks priced it, and where it sits in the wider market.
SilverBox: the full record
Every vehicle this sponsor has launched, what closed, what liquidated and what is still live.
Santander in SPACs
Mandates, bookrun credit, deal volume and the outcome of the vehicles it priced.
Financial Services SPACs
Every vehicle chasing the same mandate, ranked by cash in trust.
All spacs with an announced deal
Definitive business-combination agreement signed, closing pending.
Deadline calendar
Which sponsors are running out of time, and when the extension votes land.
What is a SPAC?
The structure, the economics and where the risks actually sit.
SPAC glossary
Every term in a blank-check filing, defined the way practitioners use it.
How this data is built
Coverage universe, ingestion, normalisation, lifecycle classification and known limits.