Companies › QUMS

Quantumsphere Acquisition Corp (QUMS)

Institutional ownership, SEC filings and insider activity

Sector: Financials · SEC CIK 0002070900 · EDGAR filings · Updated 2026-07-01

Quantumsphere Acquisition Corp (QUMS) has reported institutional ownership of 69.1%, with 29 institutional managers holding positions valued at $76.4M per the latest 13F reporting period. SEC filings include an active substantial-doubt (going concern) disclosure per the filings.

Latest updates

• 2026-07-01 — 10-K/A filed
• 2026-06-15 — Annual report (10-K) filed
• 2026-03-11 — Current report (8-K) filed
• 2026-02-20 — Quarterly report (10-Q) filed
• 2026-02-17 — SCHEDULE 13G/A filed
• 2026-02-17 — Late-filing notice for quarterly report (NT 10-Q)

Institutional ownership overview

According to SEC 13F filings tracked by Sightfile, Quantumsphere Acquisition Corp has 29 institutional holders and institutional ownership of 69.1%.

Insider activity

Insiders reported 0 transactions (0 buys, 0 sells) across 2 reporting insiders, with a net reported value of $0.

Data flags from SEC filings

Related companies

GLOBAL INDEMNITY GROUP LLC (GBLI) · FRANKLIN FINL SVCS CORP (FRAF) · CONSUMER PORTFOLIO SERVICES (CPSS) · CB FINL SVCS INC (CBFV) · BRAEMAR HOTELS & RESORTS INC (BHR) · FINWARD BANCORP (FNWD)