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Arqit Quantum Inc. (ARQQ)

Nasdaq: ARQQ · Services-Prepackaged Software · London, GB · filing with the SEC since 2021
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Grade4.1
◀ Past 4.1● Present 4.4▶ Future 3.9
3 est.
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Filings

180 filings since 2017 beside 317 insider forms · Accelerated filer and emerging growth company · read from EDGAR on Nov 13, 2026
Due nextAccelerated filer and emerging growth company
20-F Annual report, foreign filer for the fiscal year ending Sep 30, 2026Foreign filers have four months after the fiscal year ends. by Jan 28, 2027

A deadline is the latest date the SEC's rules allow for its filer category. It is not a forecast of the day the company files.

Filings a yearinsider forms included
6022887080177
202120222023202420252026

2026 counts to Nov 13, 2026.

SEC letters: 6 in the last 36 months, the newest Jan 23, 2026.
Insider forms 317

Insider forms (3, 4, 5 and 144) are counted each year but not listed here; the people and their trades are on the Ownership tab.

FiledFormWhat it is, in plain wordsPeriodAsk
Oct 8, 2026 6-K Interim report, foreign filer
Sep 10, 2026 SCHEDULE 13G/A Large holder update, amended
Sep 9, 2026 6-K Interim report, foreign filer
Sep 2, 2026 25-NSE Delisting notice from the exchange
Aug 19, 2026 6-K Interim report, foreign filer
Jun 23, 2026 SCHEDULE 13G Large holder notice
Jun 17, 2026 6-K Interim report, foreign filer
May 26, 2026 SCHEDULE 13D/A Activist holder update, amended
May 21, 2026 424B3 Shelf offering
May 21, 2026 6-K Interim report, foreign filer Mar 31, 2026
May 1, 2026 6-K Interim report, foreign filer
Apr 13, 2026 6-K Interim report, foreign filer
Mar 4, 2026 6-K Interim report, foreign filer
Jan 26, 2026 EFFECT Registration effective
Jan 26, 2026 424B5 Shelf offering
Jan 23, 2026 CORRESP Reply to the SEC
Jan 23, 2026 F-3/A Shelf registration, foreign filer, amended
Jan 16, 2026 UPLOAD SEC comment letter
Jan 12, 2026 F-3 Shelf registration, foreign filer
Jan 12, 2026 6-K Interim report, foreign filer
Dec 9, 2025 424B3 Shelf offering
Dec 9, 2025 424B3 Shelf offering
Dec 9, 2025 6-K Interim report, foreign filer
Dec 9, 2025 20-F Annual report, foreign filer Sep 30, 2025
Nov 12, 2025 SCHEDULE 13D/A Activist holder update, amended
Oct 21, 2025 6-K Interim report, foreign filer
Oct 20, 2025 SCHEDULE 13D/A Activist holder update, amended
Oct 9, 2025 6-K Interim report, foreign filer
Sep 24, 2025 SCHEDULE 13D/A Activist holder update, amended
Sep 19, 2025 EFFECT Registration effective
Sep 19, 2025 424B3 Shelf offering
Sep 17, 2025 CORRESP Reply to the SEC
Sep 15, 2025 F-3/A Shelf registration, foreign filer, amended
Sep 15, 2025 424B5 Shelf offering
Sep 15, 2025 6-K Interim report, foreign filer
Sep 11, 2025 6-K Interim report, foreign filer
Sep 9, 2025 UPLOAD SEC comment letter
Aug 29, 2025 F-3 Shelf registration, foreign filer
Aug 28, 2025 6-K Interim report, foreign filer
Aug 26, 2025 SCHEDULE 13D/A Activist holder update, amended
40 of 180 shown

Every row opens the filing on EDGAR. The plain words are the site's own for each form and each 8-K item; the complete history, insider forms included, is on EDGAR.

SI Assistanton ARQQ · research, not advice