Quantumsphere Acquisition QUMS SEC Filings

NASDAQ QUMS
$10.37 -0.01 (-0.10%)
At close: Oct 14, 2026 · 4:00 PM EDT
EDGAR Disclosures

SEC Filings

Source SEC EDGAR

Every SEC filing Quantumsphere Acquisition Corp (QUMS) has made, as reported on EDGAR — annual and quarterly reports, current reports, insider transactions and ownership disclosures. Filter by form group, form type or period, and open any filing or its index directly.

Form Type
# Form Type Form Group Accession Date Filing Index
18-KCurrent Report0001829126-26-009623Sep 2, 2026 12:41 AM
210-QQuarterly & Annual Report0001829126-26-008874Aug 14, 2026 8:08 PM
3SCHEDULE 13GBeneficial Ownership Report0001628280-26-054442Aug 6, 2026 8:59 PM
410-KQuarterly & Annual Report0001829126-26-007147Jul 1, 2026 9:00 PM
510-KQuarterly & Annual Report0001829126-26-006482Jun 15, 2026 5:21 PM
68-KCurrent Report0001829126-26-002191Mar 11, 2026 1:56 PM
78-KCurrent Report0001829126-26-002191Mar 11, 2026 1:56 PM
88-KCurrent Report0001829126-26-002191Mar 11, 2026 1:56 PM
910-QQuarterly & Annual Report0001829126-26-001512Feb 20, 2026 9:58 PM
10SCHEDULE 13GBeneficial Ownership Report0000902664-26-001097Feb 17, 2026 4:15 PM
11SCHEDULE 13GBeneficial Ownership Report0000902664-26-001097Feb 17, 2026 4:15 PM
12SCHEDULE 13GBeneficial Ownership Report0000902664-26-001097Feb 17, 2026 4:15 PM
13NT 10-QQuarterly & Annual Report0001829126-26-001394Feb 17, 2026 4:05 PM
14SCHEDULE 13GBeneficial Ownership Report0001104659-26-013820Feb 12, 2026 6:54 AM
158-KCurrent Report0001829126-26-000503Jan 23, 2026 4:05 PM
1610-QQuarterly & Annual Report0001829126-25-009212Nov 14, 2025 4:06 PM
17SCHEDULE 13GBeneficial Ownership Report0000902664-25-004957Nov 14, 2025 11:01 AM
18SCHEDULE 13GBeneficial Ownership Report0001140361-25-041135Nov 7, 2025 3:35 PM
198-KCurrent Report0001829126-25-008044Oct 10, 2025 3:21 PM
208-KCurrent Report0001829126-25-007899Oct 6, 2025 8:30 PM
218-KCurrent Report0001829126-25-007682Sep 29, 2025 8:12 PM
2210-QQuarterly & Annual Report0001829126-25-007505Sep 19, 2025 6:14 PM
23SCHEDULE 13DBeneficial Ownership Report0001829126-25-007403Sep 15, 2025 5:00 PM
24SCHEDULE 13DBeneficial Ownership Report0001829126-25-007403Sep 15, 2025 5:00 PM
25SCHEDULE 13DBeneficial Ownership Report0001829126-25-007403Sep 15, 2025 5:00 PM
268-KCurrent Report0001829126-25-006233Aug 14, 2025 8:41 PM
273Insider Transaction0001829126-25-006134Aug 12, 2025 5:29 PM
283Insider Transaction0001829126-25-006073Aug 11, 2025 7:01 PM
293Insider Transaction0001829126-25-006072Aug 11, 2025 6:59 PM
303Insider Transaction0001829126-25-006071Aug 11, 2025 6:57 PM
313Insider Transaction0001829126-25-006070Aug 11, 2025 6:54 PM
328-KCurrent Report0001829126-25-005919Aug 7, 2025 4:30 PM
33424B4Prospectus0001829126-25-005885Aug 7, 2025 9:39 AM
34S-1MEFProspectus0001829126-25-005844Aug 6, 2025 11:29 AM
35CERTOthers0001354457-25-000768Aug 6, 2025 7:16 AM
36EFFECTOthers9999999995-25-002483Aug 5, 2025 12:15 AM
378-A12BOthers0001829126-25-005822Aug 5, 2025 5:27 PM
38CORRESPOthers0001829126-25-005719Aug 1, 2025 7:08 PM
39CORRESPOthers0001829126-25-005718Aug 1, 2025 7:06 PM
40S-1Prospectus0001829126-25-005566Jul 30, 2025 9:56 PM
41CORRESPOthers0001829126-25-005567Jul 29, 2025 9:56 PM
42UPLOADOthers0000000000-25-007903Jul 28, 2025 1:36 PM
43S-1Prospectus0001829126-25-005327Jul 24, 2025 9:11 PM
44S-1Prospectus0001829126-25-005004Jul 10, 2025 4:47 PM
45CORRESPOthers0001829126-25-005005Jul 10, 2025 4:47 PM
46UPLOADOthers0000000000-25-006600Jun 24, 2025 5:36 PM
47S-1Prospectus0001829126-25-004085May 30, 2025 3:44 PM

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