Quantumsphere Acquisition (QUMSU) SEC Filings & 10K Form $10.02 0.00 (0.00%) As of 01:15 PM Eastern Add Compare Share Share SEC Filings Stock AnalysisChartCompetitorsSEC FilingsTrendsBuy This Stock Recent Quantumsphere Acquisition SEC Filings All Filing Types 1 10 10-D 10-K 10-M 10-Q 11-K 12b-25 13F 13H 144 15 15F 17-H 18 18-K 19b-4(e) 19b-4 19b-7 1-A 1-E 1-K 1-N 1-SA 1-U 1-Z 20-F 24F-2 25 2-E 3 4 40-F 5 6-K 7-M 8-A 8-K 8-M 9-M ABS DD-15E ABS-15G ABS-EE ADV ADV-E ADV-H ADV-NR ADV-W ATS ATS-R BD BD-N BDW C CA-1 CB CFPORTAL D F-1 F-10 F-3 F-4 F-6 F-7 F-8 F-80 F-N F-X ID MA MA-I MA-NR MA-W MSD MSDW n/a N-14 N-17D-1 N-17f-1 N-17f-2 N-18f-1 N-1A N-2 N-23c-3 N-27D-1 N-3 N-4 N-5 N-54A N-54C N-6 N-6EI-1 N-6F N-8A N-8B-2 N-8B-4 N-8F N-CR N-CSR N-MFP N-PX N-Q NRSRO N-SAR PF PILOT R31 S-1 S-11 S-20 S-3 S-4 S-6 S-8 SBSE SBSE-A SBSE-BD SBSE-C SBSE-W SCI SD SDR SE SF-1 SF-3 SIP T-1 T-2 T-3 T-4 T-6 TA-1 TA-2 TA-W TCR TH WB-APP X-17A-19 X-17A-5 Part I X-17A-5 Part II X-17A-5 Part IIA X-17A-5 Part IIB X-17A-5 Part III X-17A-5 Schedule I X-17F-1A Filing Types Include Ownership Filings Exclude Ownership Filings Only Show Ownership FIlings Ownership Filings Custom Range 1 Month 3 Months 6 Months Year-to-Date 1 Year 2 Years 3 Years Time Frame Start Date End Date Export to Excel DateFilerForm TypeView08/12/20254:29 PMMcCabe Daniel M. (Reporting)Quantumsphere Acquisition (Issuer)Form 3Initial statement of beneficial ownership of securities 08/11/20255:57 PMGong Qi (Reporting)Quantumsphere Acquisition (Issuer)Form 3Initial statement of beneficial ownership of securities 08/11/20255:59 PMQuantumsphere Acquisition (Issuer)Zhang Wei (Reporting)Form 3Initial statement of beneficial ownership of securities 08/11/20256:01 PMQuantumsphere Acquisition (Issuer)Whiteowl Holdings LLC (Reporting)Form 3Initial statement of beneficial ownership of securities 08/11/20255:54 PMQuantumsphere Acquisition (Issuer)Zhang Ping (Reporting)Form 3Initial statement of beneficial ownership of securities 08/07/20258:39 AMQuantumsphere Acquisition (Filer)Form 424B408/06/20256:16 AMQuantumsphere Acquisition (Filer)Form CERT08/05/202511:15 PMQuantumsphere Acquisition (Filer)Form EFFECT08/05/20254:27 PMQuantumsphere Acquisition (Filer)Form 8-A12B07/29/20258:56 PMQuantumsphere Acquisition (Filer)Form S-1/A07/23/20258:11 PMQuantumsphere Acquisition (Filer)Form S-1/A05/30/20252:44 PMQuantumsphere Acquisition (Filer)Form S-1Registration statement under Securities Act of 1933 (Data available from 1/1/2016 forward) Related Companies and Tools Related Companies ONCHU 10Q Form ASPCU 10Q Form AGBAW 10Q Form AGNCP 10Q Form AGNCO 10Q Form AGNCN 10Q Form AGNCM 10Q Form AGNCL 10Q Form ANSCW 10Q Form ANSCU 10Q Form SEC Filings Tools Latest SEC FilingsInsider Trading Activity This page (NASDAQ:QUMSU) was last updated on 8/28/2025 by MarketBeat.com Staff From Our PartnersMarket Panic: Trump Just Dropped a Bomb on Your Stockstock Market Panic: Trump Just Dropped a Bomb on Your Stocks The market is in freefall—and Trump's new tarif...American Alternative | SponsoredBREAKING: The House just passed 3 pro-crypto bills!THREE pro-crypto bills just passed the House! 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