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Quartzsea Acquisition Corp (QSEA)

Institutional ownership, SEC filings and insider activity

Sector: Financials · SEC CIK 0002047455 · EDGAR filings · Updated 2026-07-16

Quartzsea Acquisition Corp (QSEA) has reported institutional ownership of 74.3%, with 26 institutional managers holding positions valued at $78.0M per the latest 13F reporting period. SEC filings include an active substantial-doubt (going concern) disclosure per the filings.

Latest updates

• 2026-07-16 — SCHEDULE 13G/A filed
• 2026-07-14 — Quarterly report (10-Q) filed
• 2026-06-24 — Current report (8-K) filed
• 2026-06-18 — Current report (8-K) filed
• 2026-06-17 — DEFR14A filed
• 2026-06-16 — Amended current report (8-K/A) filed

Institutional ownership overview

According to SEC 13F filings tracked by Sightfile, Quartzsea Acquisition Corp has 26 institutional holders and institutional ownership of 74.3%.

Insider activity

Insiders reported 0 transactions (0 buys, 0 sells) across 1 reporting insiders, with a net reported value of $0.

Data flags from SEC filings

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