Quick Takeaways
- SBXD - SilverBox Corp IV has 9 insiders with reported activity on this page.
- No net insider buy/sell flow is currently reported for the last year.
- Recent transaction rows are not currently available.
- Info
- Insider Trading
- Financials
- Holders
Insider Transactions Reported by 9 Insiders of SilverBox Corp IV
- Symbol
- SBXD, SBXD-UN, SBXD-WT on NYSE
- Location
- Austin, TX
What Changed
- No meaningful buy/sell imbalance is currently visible in the one-year window.
- Activity will update as new Forms 3/4/5 are filed.
Why This Matters
- This page gives a plain-language issuer insider context before you inspect transaction-level evidence.
- Use the filing links below to verify timestamps, codes, and ownership impacts directly from SEC forms.
Source Evidence
Filed on Form 4
See Original Filing
Issuer insider activity is sourced from SEC Forms 3, 4, and 5.
Insider trading overview
Last 12 monthsInsider buy and sell flow is broadly balanced over the last 12 months. No Buy or Sell transactions have been reported since 16 Apr 2025.
Buys
$0
Shares: 0
Insiders: 0
Sells
$0
Shares: 0
Insiders: 0
Net
$0
Shares: 0
Insiders: 0
| Window (months) | Buy shares | Sell shares | Buy $ | Sell $ | Net $ |
|---|---|---|---|---|---|
| 0-3 | 0 | 0 | $0 | $0 | $0 |
| 3-6 | 0 | 0 | $0 | $0 | $0 |
| 6-9 | 0 | 0 | $0 | $0 | $0 |
| 9-12 | 0 | 0 | $0 | $0 | $0 |
SilverBox Corp IV executives and other stock owners filed with the SEC include:
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Valuation | Report Date |
|---|---|---|---|---|---|---|
| Jonathan M. Lewis | Director | Mixed | 15 Aug 2024 | |||
| SilverBox Sponsor IV LLC | 10%+ Owner | Mixed | 15 Aug 2024 | |||
| Matthew R. Eilers | Director | Mixed | 15 Aug 2024 | |||
| Reed J. Seaton | Director | Mixed | 23 Sep 2024 | |||
| Daniel E. Esters | Chief Financial Officer, Director | Mixed | 15 Aug 2024 | |||
| David H. Lee | General Counsel | Mixed | 15 Aug 2024 | |||
| Duncan D. Murdoch | Chief Investment Officer | Mixed | 15 Aug 2024 | |||
| Jin Chun | Chief Operating Officer | Mixed | 15 Aug 2024 | |||
| Glenn P. Marino | Director | Mixed | 25 Jun 2025 |
Top shareholders of SilverBox Corp IV (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Ownership % is shown only when it is directly reported or safely comparable across share classes.
Methodology: rows are grouped by holder and ranked by the holder's primary source value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
| Holder | Source | Role / Reporting | Ownership % | Shares | Holdings Value | 12M Net Δ | As of | Details |
|---|---|---|---|---|---|---|---|---|
| SilverBox Sponsor IV LLC |
13D/G
|
— |
21%
|
5,455,000
|
$56,131,950 | $0 | 31 Dec 2024 | |
| LINDEN ADVISORS LP |
13F
|
Company |
9.7%
|
2,000,000
|
$21,160,000 | — | 31 Dec 2025 | |
| MIZUHO FINANCIAL GROUP INC |
13D/G
|
— |
8%
|
1,645,673
|
$17,411,220 | $0 | 31 Dec 2025 | |
| MIZUHO SECURITIES USA LLC |
13F
|
Company |
8%
|
1,645,673
|
$17,296,311 | — | 31 Dec 2025 | |
| Polar Asset Management Partners Inc. |
13D/G
13F
|
Company |
7.2%
|
1,480,000
|
$16,894,496 | $0 | 30 Jun 2025 | |
| AQR CAPITAL MANAGEMENT LLC |
13D/G
|
— |
6.6%
|
1,347,002
|
$14,547,622 | -$2,299,946 | 30 Jun 2025 | |
| AQR Arbitrage LLC |
13F
|
Company |
6.5%
|
1,347,002
|
$14,251,281 | — | 31 Dec 2025 | |
| BERKLEY W R CORP |
13F
13D/G
|
Company · W. R. Berkley Corporation |
5.9%
from 13D/G
|
1,211,674
|
$12,819,511 | — | 31 Dec 2025 | |
| BARCLAYS PLC |
13D/G
|
— |
4.7%
|
970,927
|
$10,486,012 | -$3,578,429 | 30 Jun 2025 | |
| D. E. Shaw & Co., Inc. |
13F
|
Company |
4.8%
|
989,397
|
$10,467,820 | — | 31 Dec 2025 | |
| MMCAP International Inc. SPC |
13F
|
Company |
4.8%
|
980,000
|
$10,368,400 | — | 31 Dec 2025 | |
| WOLVERINE ASSET MANAGEMENT LLC |
13F
|
Company |
4.7%
|
972,109
|
$10,284,913 | — | 31 Dec 2025 | |
| PICTON MAHONEY ASSET MANAGEMENT |
13F
|
Company |
4%
|
824,899
|
$8,727,431 | — | 31 Dec 2025 | |
| Governors Lane LP |
13F
|
Company |
3.7%
|
753,177
|
$7,968,613 | — | 31 Dec 2025 | |
| GOLDMAN SACHS GROUP INC |
13D/G
13F
|
THE GOLDMAN SACHS GROUP, INC. · Company |
3.2%
|
654,022
|
$6,847,610 | -$9,976,936 | 30 Sep 2025 | |
| Crossingbridge Advisors, LLC |
13F
|
Company |
3.1%
|
637,732
|
$6,741,327 | — | 31 Dec 2025 | |
| RiverPark Advisors, LLC |
13F
|
Company |
2.9%
|
587,732
|
$6,218,205 | — | 31 Dec 2025 | |
| Magnetar Financial LLC |
13F
|
Company |
2.5%
|
520,823
|
$5,510,307 | — | 31 Dec 2025 | |
| Calamos Advisors LLC |
13F
|
Company |
2.4%
|
500,000
|
$5,290,000 | — | 31 Dec 2025 | |
| LMR Partners LLP |
13F
|
Company |
2.4%
|
500,000
|
$5,290,000 | — | 31 Dec 2025 | |
| First Trust Capital Management L.P. |
13F
|
Company |
2.2%
|
445,168
|
$4,709,877 | — | 31 Dec 2025 | |
| ARISTEIA CAPITAL, L.L.C. |
13F
|
Company |
1.6%
|
336,123
|
$3,556,181 | — | 31 Dec 2025 | |
| Westchester Capital Management, LLC |
13F
|
Company |
1.6%
|
325,485
|
$3,443,631 | — | 31 Dec 2025 | |
| RIVERNORTH CAPITAL MANAGEMENT, LLC |
13F
|
Company |
1.5%
|
299,997
|
$3,173,968 | — | 31 Dec 2025 | |
| HIGHBRIDGE CAPITAL MANAGEMENT LLC |
13D/G
|
— |
1.4%
|
280,000
|
$2,931,600 | -$9,933,936 | 30 Sep 2025 | |
| Context Capital Management, LLC |
13F
|
Company |
1.3%
|
262,951
|
$2,782,022 | — | 31 Dec 2025 | |
| MOORE CAPITAL MANAGEMENT, LP |
13F
|
Company |
1.2%
|
250,000
|
$2,645,000 | — | 31 Dec 2025 | |
| Radcliffe Capital Management, L.P. |
13F
|
Company |
1.1%
|
227,454
|
$2,406,463 | — | 31 Dec 2025 | |
| Shaolin Capital Management LLC |
13F
|
Company |
1.1%
|
225,000
|
$2,380,500 | — | 31 Dec 2025 | |
| Wealthspring Capital LLC |
13F
|
Company |
1%
|
208,849
|
$2,209,622 | — | 31 Dec 2025 | |
| MILLENNIUM MANAGEMENT LLC |
13F
|
Company |
0.97%
|
200,000
|
$2,116,000 | — | 31 Dec 2025 | |
| PERISCOPE CAPITAL INC. |
13F
|
Company |
0.91%
|
186,353
|
$1,971,615 | — | 31 Dec 2025 | |
| TORONTO DOMINION BANK |
13F
|
Company |
0.77%
|
158,057
|
$1,672,243 | — | 31 Dec 2025 | |
| MANGROVE PARTNERS IM, LLC |
13F
|
Company |
0.76%
|
156,622
|
$1,657,061 | — | 31 Dec 2025 | |
| Quarry LP |
13F
|
Company |
0.69%
|
141,597
|
$1,498,096 | — | 31 Dec 2025 | |
| Creek Drive Management Group LLC |
13F
|
Company |
0.68%
|
140,000
|
$1,481,200 | — | 31 Dec 2025 | |
| HRT FINANCIAL LP |
13F
|
Company |
0.68%
|
139,195
|
$1,472,000 | — | 31 Dec 2025 | |
| DLD Asset Management, LP |
13F
|
Company |
0.59%
|
121,473
|
$1,285,184 | — | 31 Dec 2025 | |
| HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND |
13D/G
13F
|
Company |
0.5%
|
100,000
|
$1,080,000 | -$18,360,000 | 30 Jun 2025 | |
| Massar Capital Management, LP |
13F
|
Company |
0.46%
|
94,600
|
$1,000,868 | — | 31 Dec 2025 | |
| METEORA CAPITAL, LLC |
13F
|
Company |
0.34%
|
70,000
|
$740,600 | — | 31 Dec 2025 | |
| Lineage Point Capital LP |
13F
|
Company |
0.24%
|
50,042
|
$529,444 | — | 31 Dec 2025 | |
| JPMORGAN CHASE & CO |
13F
|
Company |
0.24%
|
50,000
|
$529,000 | — | 31 Dec 2025 | |
| OCONNOR, A Distinct Business Unit of UBS ASSET MANAGEMENT AMERICAS (LLC) |
13F
|
Company |
0.23%
|
47,830
|
$506,041 | — | 31 Dec 2025 | |
| Clear Street Group Inc. |
13F
|
Company |
—
mixed-class rows
|
37,378
mixed-class rows
|
$395,086 | — | 31 Dec 2025 | |
| GLAZER CAPITAL, LLC |
13F
|
Company |
0.1%
|
20,780
|
$220,000 | — | 31 Dec 2025 | |
| Schonfeld Strategic Advisors LLC |
13F
|
Company |
0.09%
|
19,355
|
$204,775 | — | 31 Dec 2025 | |
| TWO SIGMA SECURITIES, LLC |
13F
|
Company |
0.08%
|
17,330
|
$183,351 | — | 31 Dec 2025 | |
| CITADEL ADVISORS LLC |
13F
|
Company |
0.05%
|
10,631
|
$112,476 | — | 31 Dec 2025 | |
| UBS Group AG |
13F
|
Company |
—
mixed-class rows
|
3,822
mixed-class rows
|
$40,565 | — | 31 Dec 2025 |
Recent Insider Transactions by Companies or Individuals for SilverBox Corp IV
Showing up to 300 most recent insider transactions from the last 12 months.
| Insider | Symbol | Class | Transaction | % | Value $ | * Price $ | Shares | Shares Owned | Date | Ownership |
|---|---|---|---|---|---|---|---|---|---|---|
| No insider transactions were found in the last 12 months for this issuer. | ||||||||||
* An asterisk sign (*) next to the price indicates that the price is likely invalid.