Quantum Cyber N.V. SEC filings QUCY

Quantum Cyber N.V. has 204 filings in SEC EDGAR's recent list, going back to Aug 3, 2021. Its latest annual report, Form ARS, was filed on Jun 1, 2026 for the period ended Dec 31, 2025. The latest quarterly report (Form 10-Q) was filed on Aug 14, 2026, covering the quarter ended Jun 30, 2026. The most recent current report (Form 8-K) was filed on Oct 16, 2026 (officer or director change). The company's fiscal year ends on December 31.

Quantum Cyber N.V. SEC filings
Form Description Filed Period
8-K Current report
Officer or director change
Oct 16, 2026 Oct 12, 2026
8-K Current report
Material agreement
Oct 9, 2026 Oct 9, 2026
424B5 Prospectus supplement Oct 9, 2026 —
8-K/A Amended current report Sep 25, 2026 Jul 15, 2026
8-K Current report
Regulation FD disclosure
Sep 25, 2026 Sep 25, 2026
10-Q Quarterly report Aug 14, 2026 Jun 30, 2026
4 Insider transaction Aug 12, 2026 Aug 11, 2026
SCHEDULE 13G Ownership over 5% (passive) Aug 10, 2026 —
4 Insider transaction Aug 7, 2026 Aug 5, 2026
SCHEDULE 13D/A Amended ownership over 5% (active) Aug 7, 2026 —
4/A Filing Aug 6, 2026 Jul 22, 2026
4/A Filing Aug 6, 2026 Jul 22, 2026
4/A Filing Aug 6, 2026 Jul 22, 2026
4/A Filing Aug 6, 2026 Jul 22, 2026
4/A Filing Aug 6, 2026 Jul 22, 2026
4 Insider transaction Aug 5, 2026 Jul 31, 2026
4 Insider transaction Aug 4, 2026 Jul 31, 2026
4 Insider transaction Aug 4, 2026 Jul 31, 2026
4 Insider transaction Aug 4, 2026 Jul 31, 2026
4 Insider transaction Aug 4, 2026 Jul 31, 2026
8-K Current report
Regulation FD disclosure
Jul 24, 2026 Jul 24, 2026
8-K Current report
Acquisition or sale of assets, Regulation FD disclosure, Other events
Jul 16, 2026 Jul 15, 2026
3 Initial insider ownership Jul 9, 2026 Jul 1, 2026
4 Insider transaction Jul 7, 2026 Jul 6, 2026
8-K Current report
Officer or director change
Jul 7, 2026 Jul 1, 2026
8-K Current report
Material agreement, Other events
Jul 1, 2026 Jun 26, 2026
8-K Current report
Auditor change
Jun 26, 2026 Jun 22, 2026
EFFECT Filing Jun 15, 2026 —
8-K Current report
Material agreement, Regulation FD disclosure
Jun 15, 2026 Jun 11, 2026
UPLOAD Letter from the SEC Jun 12, 2026 —
CORRESP Letter to the SEC Jun 12, 2026 —
8-K Current report
Agreement ended
Jun 5, 2026 Jun 2, 2026
S-3 Shelf registration Jun 4, 2026 —
8-K Current report
Material agreement, Regulation FD disclosure
Jun 3, 2026 Jun 1, 2026
DEF 14A Proxy statement Jun 1, 2026 Jun 29, 2026
ARS Annual report to shareholders Jun 1, 2026 Dec 31, 2025
8-K Current report
Other events
May 28, 2026 May 28, 2026
4 Insider transaction May 26, 2026 May 8, 2026
8-K Current report
Other events
May 26, 2026 May 26, 2026
PRE 14A Preliminary proxy statement May 22, 2026 Jun 29, 2026
144 Notice of proposed sale May 22, 2026 —
3 Initial insider ownership May 21, 2026 May 13, 2026
4 Insider transaction May 21, 2026 May 8, 2026
144 Notice of proposed sale May 18, 2026 —
8-K Current report
Material agreement, Officer or director change
May 18, 2026 May 12, 2026
10-Q Quarterly report May 15, 2026 Mar 31, 2026
8-K Current report
Material agreement, Officer or director change
May 8, 2026 May 4, 2026
3 Initial insider ownership Apr 28, 2026 Apr 22, 2026
3 Initial insider ownership Apr 28, 2026 Apr 22, 2026
4 Insider transaction Apr 28, 2026 Apr 22, 2026
SCHEDULE 13D Ownership over 5% (active) Apr 28, 2026 —
8-K Current report
Material agreement, Unregistered share sale, Change in control, Officer or director change, Bylaw or fiscal year change, Shareholder vote results
Apr 28, 2026 Apr 22, 2026
8-K Current report
Material agreement, Other events
Apr 15, 2026 Apr 9, 2026
10-K Annual report Mar 31, 2026 Dec 31, 2025
DEF 14A Proxy statement Mar 25, 2026 Apr 22, 2026
8-K Current report
Listing notice
Mar 25, 2026 Mar 20, 2026
8-K Current report
Regulation FD disclosure, Other events
Mar 17, 2026 Mar 17, 2026
PRE 14A Preliminary proxy statement Mar 12, 2026 Mar 12, 2026
8-K Current report
Officer or director change, Regulation FD disclosure, Other events
Mar 11, 2026 Mar 11, 2026
4 Insider transaction Mar 3, 2026 Feb 13, 2026
3 Initial insider ownership Mar 3, 2026 Feb 13, 2026
4 Insider transaction Feb 19, 2026 Feb 13, 2026
4 Insider transaction Feb 19, 2026 Feb 13, 2026
4 Insider transaction Feb 19, 2026 Feb 13, 2026
4 Insider transaction Feb 19, 2026 Feb 13, 2026
3 Initial insider ownership Feb 19, 2026 Jan 1, 2026
S-8 Employee stock plan registration Feb 19, 2026 —
SCHEDULE 13G/A Amended ownership over 5% (passive) Feb 17, 2026 —
8-K Current report
Material agreement, Unregistered share sale, Change to shareholder rights, Officer or director change, Other events
Feb 17, 2026 Feb 13, 2026
8-K Current report
Other events
Feb 10, 2026 Dec 29, 2025
3 Initial insider ownership Jan 26, 2026 Jan 1, 2026
3 Initial insider ownership Jan 26, 2026 Jan 1, 2026
3 Initial insider ownership Jan 26, 2026 Jan 1, 2026
3 Initial insider ownership Jan 26, 2026 Jan 1, 2026
SCHEDULE 13G/A Amended ownership over 5% (passive) Jan 20, 2026 —
4/A Primary document Jan 20, 2026 Oct 17, 2025
3/A Primary document Jan 20, 2026 Oct 17, 2025
4 Insider transaction Jan 16, 2026 Oct 17, 2025
3 Initial insider ownership Jan 16, 2026 Oct 17, 2025
SCHEDULE 13G Ownership over 5% (passive) Jan 16, 2026 —
EFFECT Filing Dec 29, 2025 —
424B5 Prospectus supplement Dec 29, 2025 —
424B5 Prospectus supplement Dec 29, 2025 —
CORRESP Letter to the SEC Dec 22, 2025 —
F-3 Shelf registration (foreign issuer) Dec 5, 2025 —
424B5 Prospectus supplement Nov 26, 2025 —
6-K Current report (foreign issuer) Nov 26, 2025 Nov 26, 2025
6-K Current report (foreign issuer) Oct 3, 2025 Oct 3, 2025
424B5 Prospectus supplement Oct 3, 2025 —
424B3 Prospectus Oct 3, 2025 —
6-K Current report (foreign issuer) Sep 26, 2025 Jun 30, 2025
SCHEDULE 13G/A Amended ownership over 5% (passive) Aug 14, 2025 —
6-K Current report (foreign issuer) Aug 5, 2025 Aug 5, 2025
424B3 Prospectus Aug 5, 2025 —
EFFECT Filing Aug 4, 2025 —
CORRESP Letter to the SEC Jul 31, 2025 —
CORRESP Letter to the SEC Jul 31, 2025 —
F-1 Registration statement (foreign issuer) Jul 30, 2025 —
UPLOAD Letter from the SEC Jul 18, 2025 —
DRS Filing Jul 15, 2025 —
6-K Current report (foreign issuer) Jun 5, 2025 Jun 5, 2025
424B3 Prospectus May 21, 2025 —
6-K Current report (foreign issuer) May 21, 2025 May 21, 2025
EFFECT Filing May 16, 2025 —
SCHEDULE 13G/A Amended ownership over 5% (passive) May 15, 2025 —
F-1/A Amendment no. 1 to form f-1 May 14, 2025 —
CORRESP Letter to the SEC May 14, 2025 —
CORRESP Letter to the SEC May 14, 2025 —
F-1 Registration statement (foreign issuer) May 14, 2025 —
6-K Current report (foreign issuer) May 2, 2025 May 2, 2025
UPLOAD Letter from the SEC Apr 14, 2025 —
DRS Filing Apr 9, 2025 —
6-K Current report (foreign issuer) Apr 1, 2025 Apr 1, 2025
20-F Annual report (foreign issuer) Mar 31, 2025 Dec 31, 2024
6-K Current report (foreign issuer) Mar 13, 2025 Mar 13, 2025
SCHEDULE 13G Ownership over 5% (passive) Feb 14, 2025 —
6-K Current report (foreign issuer) Jan 27, 2025 Jan 27, 2025
6-K Current report (foreign issuer) Jan 14, 2025 Jan 14, 2025
6-K Current report (foreign issuer) Dec 16, 2024 Dec 16, 2024
424B3 Prospectus Dec 16, 2024 —
6-K Current report (foreign issuer) Dec 13, 2024 Dec 13, 2024
EFFECT Filing Dec 12, 2024 —
CORRESP Letter to the SEC Dec 11, 2024 —
CORRESP Letter to the SEC Dec 11, 2024 —
F-1/A Amendment no. 3 to form f-1 Dec 11, 2024 —
F-1/A Amendment no. 2 to form f-1 Dec 9, 2024 —
F-1/A Amendment no. 1 to form f-1 Dec 9, 2024 —
6-K Current report (foreign issuer) Nov 29, 2024 Nov 29, 2024
6-K Current report (foreign issuer) Nov 15, 2024 Nov 15, 2024
6-K Current report (foreign issuer) Nov 12, 2024 Nov 12, 2024
UPLOAD Letter from the SEC Nov 8, 2024 —
F-1 Registration statement (foreign issuer) Nov 5, 2024 —
6-K Current report (foreign issuer) Oct 21, 2024 Oct 21, 2024
6-K Current report (foreign issuer) Oct 18, 2024 Jun 30, 2024
6-K Current report (foreign issuer) Oct 9, 2024 Oct 9, 2024
SC 13G/A Amended ownership over 5% (passive) Oct 7, 2024 —
6-K Current report (foreign issuer) Oct 3, 2024 Oct 3, 2024
6-K Current report (foreign issuer) May 31, 2024 May 31, 2024
D/A Filing May 10, 2024 —
6-K Current report (foreign issuer) Apr 24, 2024 Apr 24, 2024
6-K Current report (foreign issuer) Apr 19, 2024 Apr 18, 2024
20-F Annual report (foreign issuer) Apr 9, 2024 Dec 31, 2023
6-K Current report (foreign issuer) Feb 23, 2024 Feb 23, 2024
SC 13G/A Amended ownership over 5% (passive) Feb 13, 2024 —
6-K Current report (foreign issuer) Nov 16, 2023 Sep 30, 2023
6-K Current report (foreign issuer) Nov 15, 2023 Nov 15, 2023
424B5 Prospectus supplement Nov 14, 2023 —
6-K Current report (foreign issuer) Nov 13, 2023 Nov 13, 2023
424B5 Prospectus supplement Sep 26, 2023 —
6-K Current report (foreign issuer) Sep 13, 2023 Sep 13, 2023
6-K Current report (foreign issuer) Aug 15, 2023 Jun 30, 2023
S-8 Employee stock plan registration Jul 11, 2023 —
D Filing Jul 11, 2023 —
6-K Current report (foreign issuer) Jun 28, 2023 Jun 28, 2023
424B5 Prospectus supplement Jun 28, 2023 —
6-K Current report (foreign issuer) May 19, 2023 May 19, 2023
6-K Current report (foreign issuer) May 16, 2023 Mar 31, 2023
20-F Annual report (foreign issuer) Apr 7, 2023 Dec 31, 2022
SC 13G Ownership over 5% (passive) Mar 1, 2023 —
6-K Current report (foreign issuer) Feb 21, 2023 Feb 21, 2023
6-K Current report (foreign issuer) Jan 20, 2023 Jan 20, 2023
424B3 Prospectus Jan 10, 2023 —
EFFECT Filing Jan 6, 2023 —
CORRESP Letter to the SEC Jan 5, 2023 —
UPLOAD Letter from the SEC Jan 4, 2023 —
F-3 Shelf registration (foreign issuer) Dec 30, 2022 —
6-K Current report (foreign issuer) Dec 20, 2022 Dec 20, 2022
6-K Current report (foreign issuer) Nov 4, 2022 Nov 4, 2022
6-K Current report (foreign issuer) Sep 28, 2022 Sep 28, 2022
6-K Current report (foreign issuer) Sep 7, 2022 Jun 30, 2022
6-K Current report (foreign issuer) Jul 1, 2022 Jul 1, 2022
6-K Current report (foreign issuer) Jun 3, 2022 Jun 3, 2022
SC 13G Ownership over 5% (passive) May 16, 2022 —
SC 13G Ownership over 5% (passive) May 16, 2022 —
20-F Annual report (foreign issuer) May 3, 2022 Dec 31, 2021
NT 20-F Notification of late filing May 2, 2022 Dec 31, 2021
424B3 Prospectus Jan 28, 2022 —
6-K Current report (foreign issuer) Jan 28, 2022 Jan 28, 2022
EFFECT Filing Jan 25, 2022 —
CORRESP Letter to the SEC Jan 24, 2022 —
CORRESP Letter to the SEC Jan 24, 2022 —
F-1 Registration statement (foreign issuer) Jan 21, 2022 —
UPLOAD Letter from the SEC Jan 20, 2022 —
DRS Filing Jan 14, 2022 —
6-K Current report (foreign issuer) Jan 6, 2022 Jan 6, 2022
6-K Current report (foreign issuer) Nov 12, 2021 Nov 12, 2021
424B3 Prospectus Nov 12, 2021 —
424B3 Prospectus Nov 12, 2021 —
EFFECT Filing Nov 4, 2021 —
CERT Filing Nov 3, 2021 —
8-A12B For registration of certain classes Nov 3, 2021 —
CORRESP Letter to the SEC Nov 2, 2021 —
CORRESP Letter to the SEC Nov 2, 2021 —
F-1/A Amendment no. 2 to form f-1 Nov 2, 2021 —
FWP Free writing prospectus Oct 26, 2021 —
F-1/A Registration statement Oct 26, 2021 —
UPLOAD Letter from the SEC Oct 21, 2021 —
F-1 Registration statement (foreign issuer) Oct 12, 2021 —
CORRESP Letter to the SEC Oct 8, 2021 —
D Filing Sep 8, 2021 —

Showing 200 filings, the most recent 200. Main filings leave out insider and ownership forms such as Form 4; choose a type above to see them. Each form opens on SEC.gov. Older filings are on SEC EDGAR.

Company profile

Industry
Pharmaceutical Preparations (SIC 2834)
Listed as
QUCY (Nasdaq)
Fiscal year ends
December 31
Incorporated in
Netherlands
Headquarters
Mainz
SEC filer status
, Emerging growth company
SEC CIK
1874252
Former names
MAINZ BIOMED N.V. (until Apr 15, 2026); Mainz Biomed B.V. (until Nov 12, 2021)

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Source: SEC EDGAR filings. This is company-reported data, not investment advice.