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Quantumsphere Acquisition Corporation
QUMS
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Chronological
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Contracts
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Incorporation
Transcripts
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Financials
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10-Q
Q1 ended 06/30/26
08/14/26
10-K/A
FY 2026
07/01/26
10-K
FY 2026
06/15/26
10-Q
Q3 ended 12/31/25
02/20/26
10-Q
Q2 ended 09/30/25
11/14/25
Disclosures
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8-K
Entry into Material Agreement; Regulation FD Disclosure
10/13/26
8-K
Termination of Material Agreement
09/02/26
8-K
Entry into Material Agreement
03/11/26
8-K
Entry into Material Agreement
01/23/26
8-K/A
Other Events
10/10/25
Prospectuses and Registrations
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424B4
Prospectus
08/07/25
S-1MEF
Prospectus / registration
08/06/25
S-1/A
Registration statement (amended)
07/30/25
S-1/A
Registration statement (amended)
07/24/25
S-1/A
Registration statement (amended)
07/10/25
Proxies
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No matching filings.
Ownership
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SC 13G/A
Beneficial ownership (amended)
10/06/26
SC 13G/A
Beneficial ownership (amended)
02/17/26
SC 13G
Beneficial ownership
11/14/25
SC 13G
Beneficial ownership
11/07/25
SC 13D
Beneficial ownership
09/15/25
Other
Filter
425
425
10/13/26
NT 10-Q
Late filing notification (10-Q)
02/17/26
CERT
CEO/CFO certification
08/06/25
8-A12B
8-A12B
08/05/25
EFFECT
Request for effectiveness
08/05/25
Latest Filings
Filter
8-K
Entry into Material Agreement; Regulation FD Disclosure
10/13/26
425
425
10/13/26
8-K
Termination of Material Agreement
09/02/26
10-Q
Q1 ended 06/30/26
08/14/26
10-K/A
FY 2026
07/01/26
Ownership
Filter
SC 13G/A
Beneficial ownership (amended)
10/06/26
SC 13G/A
Beneficial ownership (amended)
02/17/26
SC 13G
Beneficial ownership
11/14/25
SC 13G
Beneficial ownership
11/07/25
SC 13D
Beneficial ownership
09/15/25