Filer Snapshot

Quartzsea Acquisition Corp

CIK 0002047455. SEC filing timeline plus parsed ownership intelligence from 13F, 13D/G, and Forms 3/4/5 where available.

Entity Type

Company

Total Filings

53

Latest Filing

15 May 2026

Industry

Blank Checks

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Source: SEC filing PRE 14A

PRE 14A filed on 15 May 2026 for CIK 0002047455.

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Symbol
QSEA, QSEAR, QSEAU on Nasdaq
Industry
Blank Checks (Office Of Real Estate & Construction)
Business address
Suite 331, 1185 6 Th Ave, New York, NY, 10036
State of incorporation
Cayman Islands
Fiscal year end
30 November

Filer intelligence

What SEC filings say about Quartzsea Acquisition Corp

A compact read of parsed XML filings. 13F, 13D/G, and Forms 3/4/5 are shown separately because they answer different ownership questions.

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SEC source mix

Counts show available parsed rows, not one combined ownership total.

No XML rows yet
13F portfolio No rows yet

Quarterly institutional portfolio holdings.

13D/G stakes No rows yet

Beneficial ownership and large-stake disclosures.

Forms 3/4/5 No rows yet

Officer, director, and 10% owner holdings or transactions.

No parsed ownership summary yet

We still show the SEC filing timeline below. The intelligence summary will populate when parsed 13F, 13D/G, or Forms 3/4/5 data exists for this CIK.

Latest update

What changed recently for Quartzsea Acquisition Corp

New fact period available

Latest financial period: Q1 2026. Open the source-backed page to inspect the fresh filing or facts context.

Update date

23 Apr 2026

Page type

Company facts

Latest period

Q1 2026

SEC-backed company facts were refreshed from filings filed on 23 Apr 2026.

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Benchmark Context

Benchmark context for this company

Quartzsea Acquisition Corp has a source-backed company facts view where you can compare the latest reported metrics with its own recent history and with peer rankings for the same metric.

Compared with

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Why this is notable

Latest financial period: Q1 2026. That gives you a fresh baseline before you compare this company with peers.

  • Latest company facts filing date: 23 Apr 2026.
  • Peer comparisons stay conservative: same metric, compatible units, latest valid company row only.
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Benchmark context is only shown where the app has enough comparable SEC-backed data to keep the interpretation honest.

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Filer Overview

Quartzsea Acquisition Corp has filed 53 SEC EDGAR filings since 23 Dec 2024. Common forms include PRE 14A, 425, 8-K, 10-Q and more.

Quartzsea Acquisition Corp SEC filings Quartzsea Acquisition Corp insider transactions Quartzsea Acquisition Corp company facts QSEA holder history

Latest Filings

Recent SEC filings for Quartzsea Acquisition Corp with direct links to document and filing folders.

PRE 14A File 001-42555

PRE 14A

Filing date
15 May 2026
Reporting date
15 May 2026
SEC evidence
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425 File 001-42555

425

Filing date
15 May 2026
Reporting date
Not listed
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NT 10-Q File 001-42555

NT 10-Q

Filing date
14 Apr 2026
Reporting date
28 Feb 2026
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NT 10-K File 001-42555

NT 10-K

Filing date
02 Mar 2026
Reporting date
30 Nov 2025
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SCHEDULE 13G File 005-94930

SCHEDULE 13G filing

Filing date
13 Nov 2025
Reporting date
Not listed
SEC evidence
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NT 10-Q/A File 001-42555

NT 10-Q

Filing date
15 Oct 2025
Reporting date
31 Aug 2025
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NT 10-Q File 001-42555

NT 10-Q

Filing date
15 Oct 2025
Reporting date
30 Sep 2025
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SCHEDULE 13G File 005-94930

SCHEDULE 13G filing

Filing date
10 Oct 2025
Reporting date
Not listed
SEC evidence
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SCHEDULE 13G/A File 005-94930

SCHEDULE 13G/A filing

Filing date
14 Aug 2025
Reporting date
Not listed
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SCHEDULE 13G/A File 005-94930

SCHEDULE 13G/A filing

Filing date
12 Aug 2025
Reporting date
Not listed
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SCHEDULE 13G File 005-94930

SCHEDULE 13G filing

Filing date
06 Jun 2025
Reporting date
Not listed
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SCHEDULE 13G/A File 005-94930

SCHEDULE 13G/A filing

Filing date
27 May 2025
Reporting date
Not listed
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SCHEDULE 13G File 005-94930

SCHEDULE 13G filing

Filing date
13 May 2025
Reporting date
Not listed
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SCHEDULE 13G File 005-94930

SCHEDULE 13G filing

Filing date
13 May 2025
Reporting date
Not listed
SEC evidence
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SCHEDULE 13D File 005-94930

SCHEDULE 13D filing

Filing date
03 Apr 2025
Reporting date
Not listed
SEC evidence
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3

FORM 3

Filing date
03 Apr 2025
Reporting date
14 Mar 2025
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3

FORM 3

Filing date
28 Mar 2025
Reporting date
14 Mar 2025
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3

FORM 3

Filing date
28 Mar 2025
Reporting date
14 Mar 2025
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3

FORM 3

Filing date
28 Mar 2025
Reporting date
14 Mar 2025
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SCHEDULE 13G File 005-94930

SCHEDULE 13G filing

Filing date
25 Mar 2025
Reporting date
Not listed
SEC evidence
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SCHEDULE 13G File 005-94930

SCHEDULE 13G filing

Filing date
21 Mar 2025
Reporting date
Not listed
SEC evidence
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424B4 File 333-285152

424B4

Filing date
19 Mar 2025
Reporting date
Not listed
SEC evidence
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CERT File 001-42555

CERT filing

Filing date
18 Mar 2025
Reporting date
Not listed
SEC evidence
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8-A12B File 001-42555

8-A12B

Filing date
18 Mar 2025
Reporting date
Not listed
SEC evidence
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S-1MEF File 333-285868

S-1MEF

Filing date
17 Mar 2025
Reporting date
Not listed
SEC evidence
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EFFECT File 333-285152

EFFECT filing

Filing date
14 Mar 2025
Reporting date
Not listed
SEC evidence
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CORRESP

CORRESP filing

Filing date
14 Mar 2025
Reporting date
Not listed
SEC evidence
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CORRESP

CORRESP filing

Filing date
14 Mar 2025
Reporting date
Not listed
SEC evidence
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S-1/A File 333-285152

S-1/A

Filing date
13 Mar 2025
Reporting date
Not listed
SEC evidence
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S-1/A File 333-285152

S-1/A

Filing date
12 Mar 2025
Reporting date
Not listed
SEC evidence
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CORRESP

CORRESP filing

Filing date
12 Mar 2025
Reporting date
Not listed
SEC evidence
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UPLOAD File 377-07640

UPLOAD filing

Filing date
12 Mar 2025
Reporting date
Not listed
SEC evidence
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S-1/A File 333-285152

S-1/A

Filing date
11 Mar 2025
Reporting date
Not listed
SEC evidence
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S-1 File 333-285152

S-1

Filing date
24 Feb 2025
Reporting date
Not listed
SEC evidence
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CORRESP

CORRESP filing

Filing date
21 Feb 2025
Reporting date
Not listed
SEC evidence
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UPLOAD File 377-07640

UPLOAD filing

Filing date
10 Feb 2025
Reporting date
Not listed
SEC evidence
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DRS/A File 377-07640

DRS/A filing

Filing date
03 Feb 2025
Reporting date
Not listed
SEC evidence
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CORRESP

CORRESP filing

Filing date
31 Jan 2025
Reporting date
Not listed
SEC evidence
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UPLOAD File 377-07640

UPLOAD filing

Filing date
17 Jan 2025
Reporting date
Not listed
SEC evidence
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DRS File 377-07640

DRS filing

Filing date
23 Dec 2024
Reporting date
Not listed
SEC evidence
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About this filer

Quartzsea Acquisition Corp files with the SEC under CIK 0002047455. This page aggregates EDGAR filings and related ownership activity.

Industry: Blank Checks.

FAQ

What is a CIK?
A Central Index Key (CIK) is a unique identifier assigned by the SEC to each filer.
Why are some filings missing?
New filings appear as the SEC updates EDGAR, and older records can vary by availability.
How often is this page updated?
Updates follow new EDGAR submissions and periodic data refreshes.
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