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.
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 17 May 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 |
9.8%
|
2,000,000
|
$21,400,000 | — | 31 Mar 2026 | |
| MIZUHO SECURITIES USA LLC |
13F
|
Company |
8.8%
|
1,796,947
|
$19,173,424 | — | 31 Mar 2026 | |
| MIZUHO FINANCIAL GROUP INC |
13D/G
|
— |
8%
|
1,645,673
|
$17,411,220 | $0 | 31 Dec 2025 | |
| Polar Asset Management Partners Inc. |
13D/G
13F
|
Company |
7.2%
|
1,480,000
|
$16,894,496 | $0 | 30 Jun 2025 | |
| BERKLEY W R CORP |
13F
13D/G
|
Company · W. R. Berkley Corporation |
7.4%
from 13D/G
|
1,514,573
|
$16,205,931 | — | 31 Mar 2026 | |
| BARCLAYS PLC |
13D/G
|
— |
7%
|
1,431,850
|
$15,320,795 | +$4,931,876 | 31 Mar 2026 | |
| 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%
|
1,335,376
|
$14,288,523 | — | 31 Mar 2026 | |
| WOLVERINE ASSET MANAGEMENT LLC |
13F
|
Company |
4.9%
|
993,817
|
$10,633,842 | — | 31 Mar 2026 | |
| D. E. Shaw & Co., Inc. |
13F
|
Company |
4.8%
|
989,397
|
$10,586,548 | — | 31 Mar 2026 | |
| MMCAP International Inc. SPC |
13F
|
Company |
4.8%
|
980,000
|
$10,486,000 | — | 31 Mar 2026 | |
| Crossingbridge Advisors, LLC |
13F
|
Company |
4.8%
|
977,013
|
$10,454,523 | — | 31 Mar 2026 | |
| PICTON MAHONEY ASSET MANAGEMENT |
13F
|
Company |
4%
|
824,899
|
$8,826,419 | — | 31 Mar 2026 | |
| RiverPark Advisors, LLC |
13F
|
Company |
3.3%
|
678,613
|
$7,261,159 | — | 31 Mar 2026 | |
| 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 | |
| Magnetar Financial LLC |
13F
|
Company |
2.5%
|
520,823
|
$5,578,014 | — | 31 Mar 2026 | |
| Calamos Advisors LLC |
13F
|
Company |
2.4%
|
500,000
|
$5,350,000 | — | 31 Mar 2026 | |
| LMR Partners LLP |
13F
|
Company |
2.4%
|
500,000
|
$5,350,000 | — | 31 Mar 2026 | |
| First Trust Capital Management L.P. |
13F
|
Company |
2.2%
|
445,168
|
$4,763,298 | — | 31 Mar 2026 | |
| ARISTEIA CAPITAL, L.L.C. |
13F
|
Company |
1.6%
|
336,123
|
$3,596,516 | — | 31 Mar 2026 | |
| Westchester Capital Management, LLC |
13F
|
Company |
1.6%
|
325,485
|
$3,482,689 | — | 31 Mar 2026 | |
| RLH Capital LLC |
13F
|
Company |
1.5%
|
304,320
|
$3,256,224 | — | 31 Mar 2026 | |
| RIVERNORTH CAPITAL MANAGEMENT, LLC |
13F
|
Company |
1.5%
|
299,997
|
$3,209,968 | — | 31 Mar 2026 | |
| Shaolin Capital Management LLC |
13F
|
Company |
1.4%
|
279,849
|
$2,994,384 | — | 31 Mar 2026 | |
| HIGHBRIDGE CAPITAL MANAGEMENT LLC |
13D/G
13F
|
Company |
1.4%
|
280,000
|
$2,931,600 | -$9,933,936 | 30 Sep 2025 | |
| Context Capital Management, LLC |
13F
|
Company |
1.3%
|
262,951
|
$2,813,576 | — | 31 Mar 2026 | |
| MOORE CAPITAL MANAGEMENT, LP |
13F
|
Company |
1.2%
|
250,000
|
$2,675,000 | — | 31 Mar 2026 | |
| Radcliffe Capital Management, L.P. |
13F
|
Company |
1.1%
|
227,454
|
$2,433,758 | — | 31 Mar 2026 | |
| Wealthspring Capital LLC |
13F
|
Company |
1%
|
207,565
|
$2,220,946 | — | 31 Mar 2026 | |
| MILLENNIUM MANAGEMENT LLC |
13F
|
Company |
0.98%
|
200,000
|
$2,140,000 | — | 31 Mar 2026 | |
| TORONTO DOMINION BANK |
13F
|
Company |
0.86%
|
175,100
|
$1,873,570 | — | 31 Mar 2026 | |
| MANGROVE PARTNERS IM, LLC |
13F
|
Company |
0.77%
|
156,622
|
$1,675,855 | — | 31 Mar 2026 | |
| Verition Fund Management LLC |
13F
|
Company |
0.71%
|
145,142
|
$1,553,019 | — | 31 Mar 2026 | |
| Quarry LP |
13F
|
Company |
0.69%
|
141,597
|
$1,515,088 | — | 31 Mar 2026 | |
| PERISCOPE CAPITAL INC. |
13F
|
Company |
0.61%
|
125,000
|
$1,337,500 | — | 31 Mar 2026 | |
| DLD Asset Management, LP |
13F
|
Company |
0.59%
|
121,073
|
$1,295,481 | — | 31 Mar 2026 | |
| HRT FINANCIAL LP |
13F
|
Company |
0.57%
|
116,551
|
$1,247,000 | — | 31 Mar 2026 | |
| HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND |
13D/G
|
— |
0.5%
|
100,000
|
$1,080,000 | -$18,360,000 | 30 Jun 2025 | |
| Massar Capital Management, LP |
13F
|
Company |
0.46%
|
94,600
|
$1,012,220 | — | 31 Mar 2026 | |
| METEORA CAPITAL, LLC |
13F
|
Company |
0.26%
|
53,219
|
$569,443 | — | 31 Mar 2026 | |
| JPMORGAN CHASE & CO |
13F
|
Company |
0.24%
|
50,000
|
$535,500 | — | 31 Mar 2026 | |
| Lineage Point Capital LP |
13F
|
Company |
0.24%
|
50,042
|
$535,449 | — | 31 Mar 2026 | |
| Clear Street Group Inc. |
13F
|
Company |
—
mixed-class rows
|
37,478
mixed-class rows
|
$401,015 | — | 31 Mar 2026 | |
| GLAZER CAPITAL, LLC |
13F
|
Company |
0.1%
|
21,369
|
$229,000 | — | 31 Mar 2026 | |
| JANE STREET GROUP, LLC |
13F
|
Company |
0.07%
|
14,712
|
$157,418 | — | 31 Mar 2026 | |
| CITADEL ADVISORS LLC |
13F
|
Company |
0.05%
|
10,964
|
$117,315 | — | 31 Mar 2026 | |
| BNP PARIBAS FINANCIAL MARKETS |
13F
|
Company |
0.05%
|
9,322
|
$99,745 | — | 31 Mar 2026 | |
| UBS Group AG |
13F
|
Company |
—
mixed-class rows
|
3,086
mixed-class rows
|
$32,699 | — | 31 Mar 2026 | |
| NATIONAL BANK OF CANADA /FI/ |
13F
|
Company |
0%
|
64
|
$672 | — | 31 Mar 2026 |
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.