Latest 10-Q

What changed in Quantumsphere Acquisition Corp.'s latest quarterly report, compared with the one before.

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Insider trades

Open-market trades from Form 4. 10b5-1 marks a plan set in advance.Open-market buys and sales by officers, directors and 10% owners, from SEC Form 4. A plan set in advance is marked 10b5-1.

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13F holders

Funds that report this stock, checked against market prices.Fund managers with over $100 million in US-listed stocks file a 13F each quarter, up to 45 days after quarter end. Long positions only.

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Trades by members of Congress

Disclosed in dollar ranges, up to 45 days after the trade.Members of Congress, their spouses and dependent children report trades in dollar ranges, up to 45 days after the trade.

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Lobbying

What Quantumsphere Acquisition Corp. and its lobbying firms report each quarter.A company that lobbies with its own staff reports its expenses; a lobbying firm it hires reports the income it received. We count both.

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Institutional ownership over time

How many funds reported holding the stock at the end of each quarter, and how many shares they held between them.

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More filings and data

Each opens the table.

About the company

The basics from the company’s SEC registration.

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Price of QUMSU, not of the company’s common stock

$10.40$0.00 (0.00%) Nov 13 close
Oct 13, 2026: $10.38Oct 14, 2026: $10.30Oct 15, 2026: $10.30Oct 16, 2026: $10.30Oct 19, 2026: $10.30Oct 20, 2026: $10.30Oct 21, 2026: $10.30Oct 22, 2026: $10.30Oct 23, 2026: $10.30Oct 26, 2026: $10.30Oct 27, 2026: $10.30Oct 28, 2026: $10.30Oct 29, 2026: $10.30Oct 30, 2026: $10.30Nov 2, 2026: $10.30Nov 3, 2026: $10.30Nov 4, 2026: $10.30Nov 5, 2026: $10.30Nov 6, 2026: $10.40Nov 9, 2026: $10.40Nov 10, 2026: $10.40Nov 11, 2026: $10.40Nov 12, 2026: $10.40Nov 13, 2026: $10.40
Oct 13, 2026Low $10.30 · High $10.40Nov 13, 2026
Aug 13, 2026: $10.33Aug 14, 2026: $10.33Aug 17, 2026: $10.33Aug 18, 2026: $10.33Aug 19, 2026: $10.33Aug 20, 2026: $10.33Aug 21, 2026: $10.33Aug 24, 2026: $10.33Aug 25, 2026: $10.33Aug 26, 2026: $10.33Aug 27, 2026: $10.33Aug 28, 2026: $10.33Aug 31, 2026: $10.33Sep 1, 2026: $10.33Sep 2, 2026: $10.33Sep 3, 2026: $10.33Sep 4, 2026: $10.33Sep 8, 2026: $10.33Sep 9, 2026: $10.33Sep 10, 2026: $10.38Sep 11, 2026: $10.38Sep 14, 2026: $10.38Sep 15, 2026: $10.38Sep 16, 2026: $10.38Sep 17, 2026: $10.38Sep 18, 2026: $10.38Sep 21, 2026: $10.38Sep 22, 2026: $10.38Sep 23, 2026: $10.38Sep 24, 2026: $10.38Sep 25, 2026: $10.38Sep 28, 2026: $10.38Sep 29, 2026: $10.38Sep 30, 2026: $10.38Oct 1, 2026: $10.38Oct 2, 2026: $10.38Oct 5, 2026: $10.38Oct 6, 2026: $10.38Oct 7, 2026: $10.38Oct 8, 2026: $10.38Oct 9, 2026: $10.38Oct 12, 2026: $10.38Oct 13, 2026: $10.38Oct 14, 2026: $10.30Oct 15, 2026: $10.30Oct 16, 2026: $10.30Oct 19, 2026: $10.30Oct 20, 2026: $10.30Oct 21, 2026: $10.30Oct 22, 2026: $10.30Oct 23, 2026: $10.30Oct 26, 2026: $10.30Oct 27, 2026: $10.30Oct 28, 2026: $10.30Oct 29, 2026: $10.30Oct 30, 2026: $10.30Nov 2, 2026: $10.30Nov 3, 2026: $10.30Nov 4, 2026: $10.30Nov 5, 2026: $10.30Nov 6, 2026: $10.40Nov 9, 2026: $10.40Nov 10, 2026: $10.40Nov 11, 2026: $10.40Nov 12, 2026: $10.40Nov 13, 2026: $10.40
Aug 13, 2026Low $10.30 · High $10.40Nov 13, 2026
Nov 13, 2025: $10.21Nov 14, 2025: $10.21Nov 17, 2025: $10.21Nov 18, 2025: $10.21Nov 19, 2025: $10.21Nov 20, 2025: $10.21Nov 21, 2025: $10.21Nov 24, 2025: $10.18Nov 25, 2025: $10.18Nov 26, 2025: $10.18Nov 28, 2025: $10.15Dec 1, 2025: $10.15Dec 2, 2025: $10.15Dec 3, 2025: $10.15Dec 4, 2025: $10.18Dec 5, 2025: $10.18Dec 8, 2025: $10.18Dec 9, 2025: $10.18Dec 10, 2025: $10.18Dec 11, 2025: $10.18Dec 12, 2025: $10.18Dec 15, 2025: $10.18Dec 16, 2025: $10.18Dec 17, 2025: $10.18Dec 18, 2025: $10.18Dec 19, 2025: $10.18Dec 22, 2025: $10.18Dec 23, 2025: $10.18Dec 24, 2025: $10.18Dec 26, 2025: $10.18Dec 29, 2025: $10.18Dec 30, 2025: $10.18Dec 31, 2025: $10.18Jan 2, 2026: $10.18Jan 5, 2026: $10.20Jan 6, 2026: $10.20Jan 7, 2026: $10.20Jan 8, 2026: $10.20Jan 9, 2026: $10.20Jan 12, 2026: $10.20Jan 13, 2026: $10.20Jan 14, 2026: $10.20Jan 15, 2026: $10.20Jan 16, 2026: $10.25Jan 20, 2026: $10.25Jan 21, 2026: $10.25Jan 22, 2026: $10.21Jan 23, 2026: $10.22Jan 26, 2026: $10.22Jan 27, 2026: $10.22Jan 28, 2026: $10.22Jan 29, 2026: $10.22Jan 30, 2026: $10.22Feb 2, 2026: $10.22Feb 3, 2026: $10.20Feb 4, 2026: $10.20Feb 5, 2026: $10.20Feb 6, 2026: $10.20Feb 9, 2026: $10.20Feb 10, 2026: $10.10Feb 11, 2026: $10.10Feb 12, 2026: $10.10Feb 13, 2026: $10.10Feb 17, 2026: $10.24Feb 18, 2026: $10.24Feb 19, 2026: $10.24Feb 20, 2026: $10.24Feb 23, 2026: $10.24Feb 24, 2026: $10.24Feb 25, 2026: $10.24Feb 26, 2026: $10.24Feb 27, 2026: $10.24Mar 2, 2026: $10.24Mar 3, 2026: $10.24Mar 4, 2026: $10.24Mar 5, 2026: $10.24Mar 6, 2026: $10.24Mar 9, 2026: $10.10Mar 10, 2026: $10.10Mar 11, 2026: $10.10Mar 12, 2026: $10.10Mar 13, 2026: $10.10Mar 16, 2026: $10.32Mar 17, 2026: $10.32Mar 18, 2026: $10.32Mar 19, 2026: $10.32Mar 20, 2026: $10.32Mar 23, 2026: $10.32Mar 24, 2026: $10.32Mar 25, 2026: $10.32Mar 26, 2026: $10.32Mar 27, 2026: $10.32Mar 30, 2026: $10.32Mar 31, 2026: $10.32Apr 1, 2026: $10.32Apr 2, 2026: $10.32Apr 6, 2026: $10.32Apr 7, 2026: $10.32Apr 8, 2026: $10.32Apr 9, 2026: $10.32Apr 10, 2026: $10.32Apr 13, 2026: $10.35Apr 14, 2026: $10.35Apr 15, 2026: $10.35Apr 16, 2026: $10.35Apr 17, 2026: $10.35Apr 20, 2026: $10.35Apr 21, 2026: $10.35Apr 22, 2026: $10.35Apr 23, 2026: $10.35Apr 24, 2026: $10.35Apr 27, 2026: $10.35Apr 28, 2026: $10.35Apr 29, 2026: $10.35Apr 30, 2026: $10.35May 1, 2026: $10.35May 4, 2026: $10.35May 5, 2026: $10.35May 6, 2026: $10.35May 7, 2026: $10.35May 8, 2026: $10.35May 11, 2026: $10.35May 12, 2026: $10.35May 13, 2026: $10.35May 14, 2026: $10.35May 15, 2026: $10.35May 18, 2026: $10.35May 19, 2026: $10.35May 20, 2026: $10.35May 21, 2026: $10.35May 22, 2026: $10.34May 26, 2026: $10.34May 27, 2026: $10.34May 28, 2026: $10.34May 29, 2026: $10.34Jun 1, 2026: $10.34Jun 2, 2026: $10.34Jun 3, 2026: $10.34Jun 4, 2026: $10.34Jun 5, 2026: $10.34Jun 8, 2026: $10.33Jun 9, 2026: $10.33Jun 10, 2026: $10.33Jun 11, 2026: $10.34Jun 12, 2026: $10.34Jun 15, 2026: $10.34Jun 16, 2026: $10.34Jun 17, 2026: $10.34Jun 18, 2026: $10.34Jun 22, 2026: $10.34Jun 23, 2026: $10.50Jun 24, 2026: $10.50Jun 25, 2026: $10.50Jun 26, 2026: $10.50Jun 29, 2026: $10.33Jun 30, 2026: $10.33Jul 1, 2026: $10.42Jul 2, 2026: $10.42Jul 6, 2026: $10.42Jul 7, 2026: $10.42Jul 8, 2026: $10.42Jul 9, 2026: $10.42Jul 10, 2026: $10.42Jul 13, 2026: $10.42Jul 14, 2026: $10.42Jul 15, 2026: $10.42Jul 16, 2026: $10.42Jul 17, 2026: $10.42Jul 20, 2026: $10.42Jul 21, 2026: $10.33Jul 22, 2026: $10.33Jul 23, 2026: $10.33Jul 24, 2026: $10.33Jul 27, 2026: $10.33Jul 28, 2026: $10.33Jul 29, 2026: $10.33Jul 30, 2026: $10.33Jul 31, 2026: $10.33Aug 3, 2026: $10.33Aug 4, 2026: $10.33Aug 5, 2026: $10.33Aug 6, 2026: $10.33Aug 7, 2026: $10.33Aug 10, 2026: $10.33Aug 11, 2026: $10.33Aug 12, 2026: $10.33Aug 13, 2026: $10.33Aug 14, 2026: $10.33Aug 17, 2026: $10.33Aug 18, 2026: $10.33Aug 19, 2026: $10.33Aug 20, 2026: $10.33Aug 21, 2026: $10.33Aug 24, 2026: $10.33Aug 25, 2026: $10.33Aug 26, 2026: $10.33Aug 27, 2026: $10.33Aug 28, 2026: $10.33Aug 31, 2026: $10.33Sep 1, 2026: $10.33Sep 2, 2026: $10.33Sep 3, 2026: $10.33Sep 4, 2026: $10.33Sep 8, 2026: $10.33Sep 9, 2026: $10.33Sep 10, 2026: $10.38Sep 11, 2026: $10.38Sep 14, 2026: $10.38Sep 15, 2026: $10.38Sep 16, 2026: $10.38Sep 17, 2026: $10.38Sep 18, 2026: $10.38Sep 21, 2026: $10.38Sep 22, 2026: $10.38Sep 23, 2026: $10.38Sep 24, 2026: $10.38Sep 25, 2026: $10.38Sep 28, 2026: $10.38Sep 29, 2026: $10.38Sep 30, 2026: $10.38Oct 1, 2026: $10.38Oct 2, 2026: $10.38Oct 5, 2026: $10.38Oct 6, 2026: $10.38Oct 7, 2026: $10.38Oct 8, 2026: $10.38Oct 9, 2026: $10.38Oct 12, 2026: $10.38Oct 13, 2026: $10.38Oct 14, 2026: $10.30Oct 15, 2026: $10.30Oct 16, 2026: $10.30Oct 19, 2026: $10.30Oct 20, 2026: $10.30Oct 21, 2026: $10.30Oct 22, 2026: $10.30Oct 23, 2026: $10.30Oct 26, 2026: $10.30Oct 27, 2026: $10.30Oct 28, 2026: $10.30Oct 29, 2026: $10.30Oct 30, 2026: $10.30Nov 2, 2026: $10.30Nov 3, 2026: $10.30Nov 4, 2026: $10.30Nov 5, 2026: $10.30Nov 6, 2026: $10.40Nov 9, 2026: $10.40Nov 10, 2026: $10.40Nov 11, 2026: $10.40Nov 12, 2026: $10.40Nov 13, 2026: $10.40
Nov 13, 2025Low $10.10 · High $10.50Nov 13, 2026
Congress purchase Congress sale Insider sale over $1M

Adjusted for stock splits; not for dividends. Where prices come from.

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Intraday and historical prices from TradingView. Quotes may be delayed.

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Information, not investment advice. Company matching is automatic; check the source before relying on one row.