QSEAU · Quartzsea Acquisition Corp · Shareholders & Ownership
Substantial doubt about the company's ability to continue as a going concern.
“Management concluded that, due to the Company’s liquidity condition and requirement to complete a business combination within the prescribed period to avoid liquidation, substantial doubt exists about the Company’s ability to continue as a going concern.”View the 10-Q filed Oct 9, 2026
Every disclosed holder of QSEAU in one list: 13F institutions, Schedule 13D and 13G filers, insiders (Forms 3, 4 and 5) and registered funds, each from its own latest filing. Holders nest by CIK and SEC reporting links, never by name, and each is summed once.
Who Owns QSEAU
13F quarter Jun 30, 2026; this listing alone: insiders and shares outstanding are issuer-wide, so they are left outNo chart: shares outstanding cannot be set against these holders.
| Holder group | Shares | % Out |
|---|---|---|
| Institutional (13F) | 29,995 | — |
| Insiders (Forms 3, 4, 5) | 0 | — |
| 13D/G-only blocks | 1,736,669 | — |
| Registered funds (N-PORT, not summed) | 0 | — |
% Out is unavailable: shares outstanding is an issuer-wide count, not one listing's.
13D/G-only counts each filer's latest 13D or 13G that no 13F report of the listing contains, that names no 13F filer and that no counted insider files. Funds are never summed: their shares sit inside their advisers' 13F reports.
Holders of QSEAU
| # | Holder | Shares | As of | Notes |
|---|---|---|---|---|
| 1 |
|
814,797 | ||
| 2 |
Mizuho Financial Group, Inc.
13G
CIK 1335730 · Bank · Sep 30, 2025
Rule 13d-1(b), qualified institution
|
641,777 | ||
| 3 |
TD SECURITIES (USA) LLC
13G
CIK 803012 · Broker-dealer · Jun 30, 2025
Rule 13d-1(b), qualified institution
|
280,095 | ||
| 4 |
Clear Street Group Inc.
13F
CIK 1881567 · Unknown · Jun 30, 2026
|
27,995 | ||
| 5 |
UBS Group AG
13F
CIK 1610520 · Bank · Jun 30, 2026
|
2,000 |
Shares are restated onto today's split basis. Change compares each row with the same holder's previous filing in the same source; a dash means there is none to compare. Nested 13D/G, insider and fund rows are not summed, since a 13F report already holds them.