Comparable stake leader
Adage Capital Management, L.P.
SEC ownership of SilverBox Corp V
Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0002081909.
Disclosed value leader
ADAGE CAPITAL PARTNERS GP, L.L.C.
Comparable rows
50/50
Latest evidence
31 Mar 2026
- Public ticker
- SBXE, SBXE-UN, SBXE-WT on NYSE
- Parsed ownership sources
-
13D/G and 13F
Source: Parsed SEC ownership filingsUse: Compare filing families carefully
- Largest SEC-reported holder
-
Adage Capital Management, L.P.
Ranking: Comparable ownership first, then disclosed value
- Comparable ownership rows
-
50 of 50
Meaning: Rows with safely comparable ownership %
- Latest 13D/G holder
-
Adage Capital Management, L.P.
Source: Latest parsed Schedule 13D/G stake
- Latest parsed ownership date
-
31 Mar 2026
Freshness: Most recent filing date in this holder set
- Issuer CIK
- 0002081909
- Issuer location
- Austin, TX
Ownership snapshot
CIK-linked ownership evidence from parsed SEC filings.
3 signals
Issuer
Names, identifiers, and filing context for this profile.
2 identity fields
Ownership snapshot
Top shareholders of SilverBox Corp V (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
Adage Capital Management,...
Disclosed value leader
ADAGE CAPITAL PARTNERS GP...
Comparable rows
50/50
Latest evidence
31 Mar 2026
13D/G
13F
Lead comparable stake: 6.4%
13D/G row: Adage Capital Management, L.P.
Showing 1-8 of 50 holder rows.
Quick read
Adage Capital Management, L.P. leads the comparable SEC ownership view at 6.4%.
50 of 50 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens Adage Capital Management, L.P.'s linked filing trail.
Comparable ownership
Top 5
Adage Capital Management, L.P.
6.4%
TENOR CAPITAL MANAGEMENT Co., L.P.
5.9%
ADAGE CAPITAL PARTNERS GP, L.L.C.
6.4%
Alberta Investment Management Corp
5%
HEALTHCARE OF ONTARIO PENSION PLA...
5%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-8 of 50 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| Adage Capital Management, L.P. |
13D/G
|
6.4%
|
—
1,750,000 shares
|
$0 | 31 Dec 2025 |
| TENOR CAPITAL MANAGEMENT Co., L.P. |
13F
13D/G
Company · Tenor Capital Management Company, L.P.
|
5.9%
from 13D/G
|
$16,368,000
1,650,000 shares
|
— | 31 Mar 2026 |
| ADAGE CAPITAL PARTNERS GP, L.L.C. |
13F
Company
|
6.4%
|
$17,360,000
1,750,000 shares
|
— | 31 Mar 2026 |
| Alberta Investment Management Corp |
13F
Company
|
5%
|
$13,392,000
1,350,000 shares
|
— | 31 Mar 2026 |
| HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND |
13F
Company
|
5%
|
$13,392,000
1,350,000 shares
|
— | 31 Mar 2026 |
| Hudson Bay Capital Management LP |
13F
Company
|
3.9%
|
$10,416,000
1,050,000 shares
|
— | 31 Mar 2026 |
| LINDEN ADVISORS LP |
13F
Company
|
3.7%
|
$9,975,000
1,000,000 shares
|
— | 31 Mar 2026 |
| Sculptor Capital LP |
13F
Company
|
3.7%
|
$9,919,990
999,999 shares
|
— | 31 Mar 2026 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
Forms 3/4/5 flow
Insider trading overview
Insider buy and sell flow is broadly balanced over the last 12 months. No Buy or Sell transactions have been reported since 17 Jun 2025.
Buys
$0
Insiders: 0
Sells
$0
Insiders: 0
Net
$0
Shares: 0
Window
Last 12 months
4 rolling buckets
Buy value
Sell value
Shares: 0
Shares: 0
| Window (months) | Buy shares | Sell shares | Buy value | Sell value | Net value |
|---|---|---|---|---|---|
| 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 |
Reporting owners
Insider holders from Forms 3/4/5
Showing 1-9 of 9 reporting-owner rows connected to SilverBox Corp V. Open a relationship link for the CIK-to-CIK filing trail.
Rows
9
Largest Forms 3/4/5 holder
Arik Prawer
Net 12M change
$0
Latest report
06 Jan 2026
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Valuation | Report Date |
|---|---|---|---|---|---|---|
| Arik Prawer | Director | Mixed | 02 Dec 2025 | |||
| Duncan D. Murdoch | Chief Investment Officer | Mixed | 02 Dec 2025 | |||
| David H. Lee | General Counsel | Mixed | 02 Dec 2025 | |||
| Daniel E. Esters | Chief Financial Officer, Director | Mixed | 02 Dec 2025 | |||
| SilverBox Sponsor V LLC | 10%+ Owner | Mixed | 02 Dec 2025 | |||
| Patrick Wilson | Partner | Mixed | 02 Dec 2025 | |||
| Jin Chun | Chief Operating Officer | Mixed | 02 Dec 2025 | |||
| Matthew Allen Godden | Director | Mixed | 06 Jan 2026 | |||
| David Bradley Rone | Director | Mixed | 06 Jan 2026 |
Recent insider transactions for SilverBox Corp V
Showing up to 300 recent insider transactions from the last 12 months.
| Insider | Symbol | Class | Transaction | % | SEC-reported value | SEC-reported price | Shares | Shares owned | Date | Ownership |
|---|---|---|---|---|---|---|---|---|---|---|
| SilverBox Sponsor V LLC | SBXE | Class A ordinary shares | 0 | 195,000 | 02 Dec 2025 | Direct |
* marks a reported price that did not pass the local price check.