ALLEGRO MICROSYSTEMS, INC. SEC EDGAR Filings (CIK 0000866291)

SEC EDGAR filings, ownership reports, and insider transactions for ALLEGRO MICROSYSTEMS, INC..

Symbol
ALGM on Nasdaq
Industry
Semiconductors & Related Devices (Office Of Manufacturing)
Business address
955 Perimeter Road, Manchester, NH, 03103
Fiscal year end
31 March
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ALLEGRO MICROSYSTEMS, INC. has filed 451 SEC EDGAR filings since 08 Aug 2007

Latest Filings

Recent SEC filings for ALLEGRO MICROSYSTEMS, INC. including 8-K, 3, 4 and more.

Form type Document Filing Description Filing date Reporting date File number(s)
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 21 Jan 2026 21 Jan 2026 001-39675
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 16 Jan 2026 15 Jan 2026 001-39675
3 Open 3 document View SEC filing for 3 3 09 Jan 2026 05 Jan 2026
4 Open 4 document View SEC filing for 4 4 12 Dec 2025 10 Dec 2025
144 Open 144 document View SEC filing for 144 10 Dec 2025 001-39675
4 Open 4 document View SEC filing for 4 4 12 Nov 2025 11 Nov 2025
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q 10-Q 31 Oct 2025 26 Sep 2025 001-39675
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 30 Oct 2025 30 Oct 2025 001-39675
3 Open 3 document View SEC filing for 3 3 16 Oct 2025 13 Oct 2025
4 Open 4 document View SEC filing for 4 4 25 Aug 2025 22 Aug 2025
4 Open 4 document View SEC filing for 4 4 13 Aug 2025 12 Aug 2025
SCHEDULE 13G/A Open SCHEDULE 13G/A document View SEC filing for SCHEDULE 13G/A 13 Aug 2025 005-92108
144 Open 144 document View SEC filing for 144 12 Aug 2025 001-39675
4 Open 4 document View SEC filing for 4 4 08 Aug 2025 07 Aug 2025
4 Open 4 document View SEC filing for 4 4 08 Aug 2025 07 Aug 2025
4 Open 4 document View SEC filing for 4 4 08 Aug 2025 07 Aug 2025
4 Open 4 document View SEC filing for 4 4 08 Aug 2025 07 Aug 2025
4 Open 4 document View SEC filing for 4 4 08 Aug 2025 07 Aug 2025
4 Open 4 document View SEC filing for 4 4 08 Aug 2025 07 Aug 2025
4 Open 4 document View SEC filing for 4 4 08 Aug 2025 07 Aug 2025
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 08 Aug 2025 07 Aug 2025 001-39675
4 Open 4 document View SEC filing for 4 4 05 Aug 2025 04 Aug 2025
144 Open 144 document View SEC filing for 144 04 Aug 2025 001-39675
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q 10-Q 01 Aug 2025 27 Jun 2025 001-39675
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 31 Jul 2025 31 Jul 2025 001-39675
ARS Open ARS document View SEC filing for ARS ARS 25 Jun 2025 28 Mar 2025 001-39675
DEFA14A Open DEFA14A document View SEC filing for DEFA14A DEFA14A 25 Jun 2025 001-39675
DEF 14A Open DEF 14A document | Open XBRL data View SEC filing for DEF 14A DEF 14A 25 Jun 2025 07 Aug 2025 001-39675
4 Open 4 document View SEC filing for 4 4 12 Jun 2025 11 Jun 2025
144 Open 144 document View SEC filing for 144 11 Jun 2025 001-39675
4 Open 4 document View SEC filing for 4 4 06 Jun 2025 04 Jun 2025
144 Open 144 document View SEC filing for 144 04 Jun 2025 001-39675
SD Open SD document View SEC filing for SD SD 22 May 2025 001-39675
10-K Open 10-K document | Open XBRL data View SEC filing for 10-K 10-K 22 May 2025 28 Mar 2025 001-39675
4 Open 4 document View SEC filing for 4 4 19 May 2025 15 May 2025
4 Open 4 document View SEC filing for 4 4 19 May 2025 15 May 2025
4 Open 4 document View SEC filing for 4 4 19 May 2025 15 May 2025
4 Open 4 document View SEC filing for 4 4 19 May 2025 15 May 2025
4 Open 4 document View SEC filing for 4 4 19 May 2025 15 May 2025
4 Open 4 document View SEC filing for 4 4 19 May 2025 15 May 2025
4 Open 4 document View SEC filing for 4 4 14 May 2025 13 May 2025
4 Open 4 document View SEC filing for 4 4 14 May 2025 13 May 2025
4 Open 4 document View SEC filing for 4 4 14 May 2025 13 May 2025
4 Open 4 document View SEC filing for 4 4 14 May 2025 13 May 2025
4 Open 4 document View SEC filing for 4 4 14 May 2025 13 May 2025
SCHEDULE 13G Open SCHEDULE 13G document View SEC filing for SCHEDULE 13G 13 May 2025 005-92108
SCHEDULE 13G/A Open SCHEDULE 13G/A document View SEC filing for SCHEDULE 13G/A 12 May 2025 005-92108
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 08 May 2025 08 May 2025 001-39675
SCHEDULE 13G/A Open SCHEDULE 13G/A document View SEC filing for SCHEDULE 13G/A 15 Apr 2025 005-92108
3 Open 3 document View SEC filing for 3 3 31 Mar 2025 29 Mar 2025
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 12 Mar 2025 12 Mar 2025 001-39675
425 Open 425 document View SEC filing for 425 425 06 Mar 2025 001-39675
4 Open 4 document View SEC filing for 4 4 03 Mar 2025 27 Feb 2025
4 Open 4 document View SEC filing for 4 4 03 Mar 2025 27 Feb 2025
4 Open 4 document View SEC filing for 4 4 03 Mar 2025 27 Feb 2025
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K FORM 8-K 24 Feb 2025 24 Feb 2025 001-39675
SCHEDULE 13G/A Open SCHEDULE 13G/A document View SEC filing for SCHEDULE 13G/A 12 Feb 2025 005-92108
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 06 Feb 2025 06 Feb 2025 001-39675
4 Open 4 document View SEC filing for 4 4 03 Feb 2025 31 Jan 2025
3 Open 3 document View SEC filing for 3 3 03 Feb 2025 31 Jan 2025
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 03 Feb 2025 31 Jan 2025 001-39675
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q 10-Q 31 Jan 2025 27 Dec 2024 001-39675
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 30 Jan 2025 30 Jan 2025 001-39675
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 10 Jan 2025 09 Jan 2025 001-39675
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 06 Jan 2025 06 Jan 2025 001-39675
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 23 Dec 2024 23 Dec 2024 001-39675
4 Open 4 document View SEC filing for 4 4 19 Nov 2024 18 Nov 2024
4 Open 4 document View SEC filing for 4 4 19 Nov 2024 18 Nov 2024
SC 13G/A Open SC 13G/A document View SEC filing for SC 13G/A 12 Nov 2024 005-92108
SC 13G/A Open SC 13G/A document View SEC filing for SC 13G/A 12 Nov 2024 005-92108
SC 13G Open SC 13G document View SEC filing for SC 13G 08 Nov 2024 005-92108
4 Open 4 document View SEC filing for 4 4 06 Nov 2024 05 Nov 2024
SC 13G Open SC 13G document View SEC filing for SC 13G 04 Nov 2024 005-92108
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q 10-Q 01 Nov 2024 27 Sep 2024 001-39675
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 31 Oct 2024 31 Oct 2024 001-39675
SC 13G Open SC 13G document View SEC filing for SC 13G 24 Oct 2024 005-92108
SC 13G Open SC 13G document View SEC filing for SC 13G FILING ALLEGRO MICROSYSTEMS, INC. 09 Oct 2024 005-92108
SC 13G/A Open SC 13G/A document View SEC filing for SC 13G/A FORM SC 13G/A 03 Oct 2024 005-92108
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 24 Sep 2024 20 Sep 2024 001-39675
4 Open 4 document View SEC filing for 4 4 03 Sep 2024 30 Aug 2024
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 12 Aug 2024 08 Aug 2024 001-39675
4 Open 4 document View SEC filing for 4 4 09 Aug 2024 08 Aug 2024
4 Open 4 document View SEC filing for 4 4 09 Aug 2024 08 Aug 2024
4 Open 4 document View SEC filing for 4 4 09 Aug 2024 08 Aug 2024
4 Open 4 document View SEC filing for 4 4 09 Aug 2024 08 Aug 2024
4 Open 4 document View SEC filing for 4 4 09 Aug 2024 08 Aug 2024
4 Open 4 document View SEC filing for 4 4 09 Aug 2024 08 Aug 2024
4 Open 4 document View SEC filing for 4 4 09 Aug 2024 08 Aug 2024
4 Open 4 document View SEC filing for 4 4 09 Aug 2024 08 Aug 2024
4 Open 4 document View SEC filing for 4 4 09 Aug 2024 07 Aug 2024
SC 13G/A Open SC 13G/A document View SEC filing for SC 13G/A SC 13G/A 09 Aug 2024 005-92108
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K FORM 8-K 07 Aug 2024 06 Aug 2024 001-39675
4 Open 4 document View SEC filing for 4 4 02 Aug 2024 01 Aug 2024
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q 10-Q 02 Aug 2024 28 Jun 2024 001-39675
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 01 Aug 2024 01 Aug 2024 001-39675
4 Open 4 document View SEC filing for 4 4 31 Jul 2024 29 Jul 2024
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K FORM 8-K 26 Jul 2024 24 Jul 2024 001-39675
424B5 Open 424B5 document View SEC filing for 424B5 FORM 424B5 25 Jul 2024 333-280960
424B5 Open 424B5 document View SEC filing for 424B5 FORM 424B5 23 Jul 2024 333-280960
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K FORM 8-K 23 Jul 2024 23 Jul 2024 001-39675
S-3ASR Open S-3ASR document View SEC filing for S-3ASR FORM S-3ASR 23 Jul 2024 333-280960
SC 13G/A Open SC 13G/A document View SEC filing for SC 13G/A 10 Jul 2024 005-92108
ARS Open ARS document View SEC filing for ARS ARS 26 Jun 2024 29 Mar 2024 001-39675
DEFA14A Open DEFA14A document View SEC filing for DEFA14A DEFA14A 26 Jun 2024 001-39675
DEF 14A Open DEF 14A document | Open XBRL data View SEC filing for DEF 14A DEF 14A 26 Jun 2024 08 Aug 2024 001-39675
4 Open 4 document View SEC filing for 4 4 14 Jun 2024 13 Jun 2024
4 Open 4 document View SEC filing for 4 4 13 Jun 2024 11 Jun 2024
4 Open 4 document View SEC filing for 4 4 13 Jun 2024 11 Jun 2024
4 Open 4 document View SEC filing for 4 4 13 Jun 2024 11 Jun 2024
4 Open 4 document View SEC filing for 4 4 13 Jun 2024 11 Jun 2024
4 Open 4 document View SEC filing for 4 4 13 Jun 2024 11 Jun 2024
4 Open 4 document View SEC filing for 4 4 13 Jun 2024 11 Jun 2024
4 Open 4 document View SEC filing for 4 4 13 Jun 2024 11 Jun 2024
4 Open 4 document View SEC filing for 4 4 13 Jun 2024 11 Jun 2024
144 Open 144 document View SEC filing for 144 11 Jun 2024 001-39675
4 Open 4 document View SEC filing for 4 4 04 Jun 2024 03 Jun 2024
4 Open 4 document View SEC filing for 4 4 04 Jun 2024 03 Jun 2024
4 Open 4 document View SEC filing for 4 4 31 May 2024 30 May 2024
144 Open 144 document View SEC filing for 144 30 May 2024 001-39675
4 Open 4 document View SEC filing for 4 4 23 May 2024 22 May 2024
10-K Open 10-K document | Open XBRL data View SEC filing for 10-K 10-K 23 May 2024 29 Mar 2024 001-39675
4 Open 4 document View SEC filing for 4 4 17 May 2024 15 May 2024
4 Open 4 document View SEC filing for 4 4 17 May 2024 15 May 2024
4 Open 4 document View SEC filing for 4 4 17 May 2024 15 May 2024
4 Open 4 document View SEC filing for 4 4 17 May 2024 15 May 2024
4 Open 4 document View SEC filing for 4 4 17 May 2024 15 May 2024
4 Open 4 document View SEC filing for 4 4 17 May 2024 15 May 2024
4 Open 4 document View SEC filing for 4 4 17 May 2024 15 May 2024
4 Open 4 document View SEC filing for 4 4 15 May 2024 13 May 2024
4 Open 4 document View SEC filing for 4 4 15 May 2024 13 May 2024
3 Open 3 document View SEC filing for 3 3 15 May 2024 06 May 2024
SD Open SD document View SEC filing for SD SD 13 May 2024 001-39675
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 09 May 2024 09 May 2024 001-39675
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 25 Apr 2024 25 Apr 2024 001-39675
4 Open 4 document View SEC filing for 4 4 03 Apr 2024 03 Apr 2024
3 Open 3 document View SEC filing for 3 3 03 Apr 2024 03 Apr 2024
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 03 Apr 2024 01 Apr 2024 001-39675
4 Open 4 document View SEC filing for 4 4 11 Mar 2024 08 Mar 2024
144 Open 144 document View SEC filing for 144 08 Mar 2024 001-39675
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 04 Mar 2024 29 Feb 2024 001-39675
144 Open 144 document View SEC filing for 144 04 Mar 2024 001-39675
144 Open 144 document View SEC filing for 144 27 Feb 2024 001-39675
4 Open 4 document View SEC filing for 4 4 15 Feb 2024 14 Feb 2024
4 Open 4 document View SEC filing for 4 4 15 Feb 2024 13 Feb 2024
4 Open 4 document View SEC filing for 4 4 15 Feb 2024 13 Feb 2024
144 Open 144 document View SEC filing for 144 15 Feb 2024 001-39675
SC 13G Open SC 13G document View SEC filing for SC 13G 09 Feb 2024 005-92108
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q 10-Q 06 Feb 2024 29 Dec 2023 001-39675
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 01 Feb 2024 01 Feb 2024 001-39675
SC 13G/A Open SC 13G/A document View SEC filing for SC 13G/A FORM SC 13G/A 30 Jan 2024 005-92108
4 Open 4 document View SEC filing for 4 4 21 Nov 2023 17 Nov 2023
4 Open 4 document View SEC filing for 4 4 21 Nov 2023 17 Nov 2023
4 Open 4 document View SEC filing for 4 4 21 Nov 2023 17 Nov 2023
4 Open 4 document View SEC filing for 4 4 20 Nov 2023 17 Nov 2023
4 Open 4 document View SEC filing for 4 4 15 Nov 2023 14 Nov 2023
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q 10-Q 06 Nov 2023 29 Sep 2023 001-39675
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 02 Nov 2023 02 Nov 2023 001-39675
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 01 Nov 2023 31 Oct 2023 001-39675
4 Open 4 document View SEC filing for 4 4 20 Oct 2023 18 Oct 2023
3 Open 3 document View SEC filing for 3 3 20 Oct 2023 18 Oct 2023
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 19 Oct 2023 15 Oct 2023 001-39675
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 21 Sep 2023 21 Sep 2023 001-39675
4 Open 4 document View SEC filing for 4 4 18 Sep 2023 15 Sep 2023
144 Open 144 document View SEC filing for 144 06 Sep 2023 001-39675
4 Open 4 document View SEC filing for 4 FORM 4 05 Sep 2023 01 Sep 2023
4 Open 4 document View SEC filing for 4 FORM 4 24 Aug 2023 23 Aug 2023
144 Open 144 document View SEC filing for 144 23 Aug 2023 001-39675
4 Open 4 document View SEC filing for 4 FORM 4 17 Aug 2023 16 Aug 2023
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K FORM 8-K 08 Aug 2023 07 Aug 2023 001-39675
4 Open 4 document View SEC filing for 4 FORM 4 04 Aug 2023 03 Aug 2023
4 Open 4 document View SEC filing for 4 FORM 4 04 Aug 2023 03 Aug 2023
4 Open 4 document View SEC filing for 4 FORM 4 04 Aug 2023 03 Aug 2023
4 Open 4 document View SEC filing for 4 FORM 4 04 Aug 2023 03 Aug 2023
4 Open 4 document View SEC filing for 4 FORM 4 04 Aug 2023 03 Aug 2023
4 Open 4 document View SEC filing for 4 FORM 4 04 Aug 2023 03 Aug 2023
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 04 Aug 2023 03 Aug 2023 001-39675
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q 10-Q 04 Aug 2023 30 Jun 2023 001-39675
4 Open 4 document View SEC filing for 4 FORM 4 03 Aug 2023 01 Aug 2023
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 01 Aug 2023 01 Aug 2023 001-39675
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 23 Jun 2023 21 Jun 2023 001-39675
ARS Open ARS document View SEC filing for ARS ARS 21 Jun 2023 31 Mar 2023 001-39675
DEFA14A Open DEFA14A document View SEC filing for DEFA14A DEFA14A 21 Jun 2023 001-39675
DEF 14A Open DEF 14A document | Open XBRL data View SEC filing for DEF 14A DEF 14A 21 Jun 2023 20 Jun 2023 001-39675
4 Open 4 document View SEC filing for 4 FORM 4 14 Jun 2023 13 Jun 2023
4 Open 4 document View SEC filing for 4 FORM 4 14 Jun 2023 07 Jun 2023
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 06 Jun 2023 03 Jun 2023
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 06 Jun 2023 03 Jun 2023
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 06 Jun 2023 03 Jun 2023
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 06 Jun 2023 03 Jun 2023
SD Open SD document View SEC filing for SD SD 30 May 2023 001-39675
10-K Open 10-K document | Open XBRL data View SEC filing for 10-K 10-K 25 May 2023 31 Mar 2023 001-39675
4 Open 4 document View SEC filing for 4 FORM 4 17 May 2023 15 May 2023
4 Open 4 document View SEC filing for 4 FORM 4 17 May 2023 15 May 2023
4 Open 4 document View SEC filing for 4 FORM 4 17 May 2023 15 May 2023
4 Open 4 document View SEC filing for 4 FORM 4 17 May 2023 15 May 2023
4 Open 4 document View SEC filing for 4 FORM 4 17 May 2023 15 May 2023
4 Open 4 document View SEC filing for 4 FORM 4 17 May 2023 15 May 2023
4 Open 4 document View SEC filing for 4 FORM 4 17 May 2023 15 May 2023
4 Open 4 document View SEC filing for 4 FORM 4 17 May 2023 15 May 2023
4 Open 4 document View SEC filing for 4 FORM 4 16 May 2023 12 May 2023
4 Open 4 document View SEC filing for 4 FORM 4 16 May 2023 12 May 2023
4 Open 4 document View SEC filing for 4 FORM 4 16 May 2023 12 May 2023
4 Open 4 document View SEC filing for 4 FORM 4 16 May 2023 12 May 2023
4 Open 4 document View SEC filing for 4 FORM 4 16 May 2023 12 May 2023
4 Open 4 document View SEC filing for 4 FORM 4 16 May 2023 12 May 2023
4 Open 4 document View SEC filing for 4 FORM 4 16 May 2023 12 May 2023
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 10 May 2023 10 May 2023 001-39675
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 05 Apr 2023 30 Mar 2023 001-39675
3 Open 3 document View SEC filing for 3 FORM 3 29 Mar 2023 20 Mar 2023
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 22 Feb 2023 16 Feb 2023 001-39675
4 Open 4 document View SEC filing for 4 FORM 4 14 Feb 2023 13 Feb 2023
4 Open 4 document View SEC filing for 4 FORM 4 14 Feb 2023 13 Feb 2023
4 Open 4 document View SEC filing for 4 FORM 4 10 Feb 2023 08 Feb 2023
4 Open 4 document View SEC filing for 4 FORM 4 06 Feb 2023 02 Feb 2023
4 Open 4 document View SEC filing for 4 FORM 4 06 Feb 2023 02 Feb 2023
4 Open 4 document View SEC filing for 4 FORM 4 06 Feb 2023 02 Feb 2023
4 Open 4 document View SEC filing for 4 FORM 4 06 Feb 2023 02 Feb 2023
4 Open 4 document View SEC filing for 4 FORM 4 06 Feb 2023 03 Feb 2023
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q 10-Q 01 Feb 2023 23 Dec 2022 001-39675
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 31 Jan 2023 31 Jan 2023 001-39675
4 Open 4 document View SEC filing for 4 FORM 4 19 Jan 2023 17 Jan 2023
4 Open 4 document View SEC filing for 4 FORM 4 13 Jan 2023 11 Jan 2023
4 Open 4 document View SEC filing for 4 FORM 4 09 Jan 2023 06 Jan 2023
4 Open 4 document View SEC filing for 4 FORM 4 06 Jan 2023 04 Jan 2023
4 Open 4 document View SEC filing for 4 FORM 4 04 Jan 2023 30 Dec 2022
4 Open 4 document View SEC filing for 4 FORM 4 08 Dec 2022 18 Nov 2022
4 Open 4 document View SEC filing for 4 FORM 4 08 Dec 2022 18 Nov 2022
4 Open 4 document View SEC filing for 4 FORM 4 08 Dec 2022 18 Nov 2022
4 Open 4 document View SEC filing for 4 FORM 4 08 Dec 2022 18 Nov 2022
4 Open 4 document View SEC filing for 4 FORM 4 06 Dec 2022 05 Dec 2022
4 Open 4 document View SEC filing for 4 FORM 4 05 Dec 2022 01 Dec 2022
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 17 Nov 2022 10 Nov 2022 001-39675
4 Open 4 document View SEC filing for 4 FORM 4 17 Nov 2022 15 Nov 2022
4 Open 4 document View SEC filing for 4 FORM 4 15 Nov 2022 11 Nov 2022
4 Open 4 document View SEC filing for 4 FORM 4 07 Nov 2022 04 Nov 2022
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q 10-Q 31 Oct 2022 23 Sep 2022 001-39675
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 27 Oct 2022 27 Oct 2022 001-39675
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 03 Oct 2022 29 Sep 2022 001-39675
4 Open 4 document View SEC filing for 4 FORM 4 06 Sep 2022 01 Sep 2022
3 Open 3 document View SEC filing for 3 FORM 3 06 Sep 2022 01 Sep 2022
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 01 Sep 2022 01 Sep 2022 001-39675
10-K/A Open 10-K/A document | Open XBRL data View SEC filing for 10-K/A 10-K/A 29 Aug 2022 25 Mar 2022 001-39675
4 Open 4 document View SEC filing for 4 FORM 4 08 Aug 2022 04 Aug 2022
4 Open 4 document View SEC filing for 4 FORM 4 08 Aug 2022 04 Aug 2022
4 Open 4 document View SEC filing for 4 FORM 4 08 Aug 2022 04 Aug 2022
4 Open 4 document View SEC filing for 4 FORM 4 08 Aug 2022 04 Aug 2022
4 Open 4 document View SEC filing for 4 FORM 4 08 Aug 2022 04 Aug 2022
4 Open 4 document View SEC filing for 4 FORM 4 08 Aug 2022 04 Aug 2022
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 05 Aug 2022 04 Aug 2022 001-39675
4 Open 4 document View SEC filing for 4 FORM 4 02 Aug 2022 01 Aug 2022
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q 10-Q 01 Aug 2022 24 Jun 2022 001-39675
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 28 Jul 2022 28 Jul 2022 001-39675
3 Open 3 document View SEC filing for 3 FORM 3 29 Jun 2022 20 Jun 2022
3 Open 3 document View SEC filing for 3 FORM 3 29 Jun 2022 20 Jun 2022
4 Open 4 document View SEC filing for 4 FORM 4 29 Jun 2022 27 Jun 2022
DEFA14A Open DEFA14A document View SEC filing for DEFA14A DEFA14A 22 Jun 2022 001-39675
DEF 14A Open DEF 14A document View SEC filing for DEF 14A DEF 14A 22 Jun 2022 22 Jun 2022 001-39675
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 21 Jun 2022 16 Jun 2022 001-39675
4 Open 4 document View SEC filing for 4 FORM 4 15 Jun 2022 13 Jun 2022
4 Open 4 document View SEC filing for 4 FORM 4 15 Jun 2022 13 Jun 2022
3 Open 3 document View SEC filing for 3 FORM 3 15 Jun 2022 13 Jun 2022
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 10 Jun 2022 07 Jun 2022 001-39675
4 Open 4 document View SEC filing for 4 FORM 4 06 Jun 2022 03 Jun 2022
4 Open 4 document View SEC filing for 4 FORM 4 06 Jun 2022 03 Jun 2022
4 Open 4 document View SEC filing for 4 FORM 4 06 Jun 2022 03 Jun 2022
4 Open 4 document View SEC filing for 4 FORM 4 25 May 2022 23 May 2022
3 Open 3 document View SEC filing for 3 FORM 3 25 May 2022 17 May 2022
4 Open 4 document View SEC filing for 4 FORM 4 18 May 2022 13 May 2022
4 Open 4 document View SEC filing for 4 FORM 4 18 May 2022 13 May 2022
4 Open 4 document View SEC filing for 4 FORM 4 18 May 2022 13 May 2022
4 Open 4 document View SEC filing for 4 FORM 4 18 May 2022 16 May 2022
4 Open 4 document View SEC filing for 4 FORM 4 18 May 2022 16 May 2022
4 Open 4 document View SEC filing for 4 FORM 4 18 May 2022 13 May 2022
10-K Open 10-K document | Open XBRL data View SEC filing for 10-K 10-K 18 May 2022 25 Mar 2022 001-39675
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K FORM 8-K 09 May 2022 06 May 2022 001-39675
5 Open 5 document View SEC filing for 5 FORM 5 05 May 2022 25 Mar 2022
4 Open 4 document View SEC filing for 4 FORM 4 21 Mar 2022 18 Mar 2022
SC 13G/A Open SC 13G/A document View SEC filing for SC 13G/A SC 13G/A 10 Feb 2022 005-92108
SC 13G/A Open SC 13G/A document View SEC filing for SC 13G/A SC 13G/A NO.1 10 Feb 2022 005-92108
4 Open 4 document View SEC filing for 4 FORM 4 07 Feb 2022 03 Feb 2022
4 Open 4 document View SEC filing for 4 FORM 4 07 Feb 2022 03 Feb 2022
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q 10-Q 02 Feb 2022 24 Dec 2021 001-39675
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 01 Feb 2022 01 Feb 2022 001-39675
3 Open 3 document View SEC filing for 3 FORM 3 12 Jan 2022 10 Jan 2022
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 10 Jan 2022 07 Jan 2022 001-39675
4 Open 4 document View SEC filing for 4 FORM 4 28 Dec 2021 27 Dec 2021
4 Open 4 document View SEC filing for 4 FORM 4 23 Dec 2021 21 Dec 2021
3 Open 3 document View SEC filing for 3 FORM 3 08 Dec 2021 06 Dec 2021
4 Open 4 document View SEC filing for 4 FORM 4 08 Dec 2021 07 Dec 2021
4 Open 4 document View SEC filing for 4 FORM 4 24 Nov 2021 23 Nov 2021
4 Open 4 document View SEC filing for 4 FORM 4 24 Nov 2021 23 Nov 2021
4 Open 4 document View SEC filing for 4 FORM 4 23 Nov 2021 19 Nov 2021
4 Open 4 document View SEC filing for 4 FORM 4 23 Nov 2021 19 Nov 2021
4 Open 4 document View SEC filing for 4 FORM 4 23 Nov 2021 19 Nov 2021
4 Open 4 document View SEC filing for 4 FORM 4 23 Nov 2021 19 Nov 2021
4 Open 4 document View SEC filing for 4 FORM 4 23 Nov 2021 19 Nov 2021
4 Open 4 document View SEC filing for 4 FORM 4 23 Nov 2021 19 Nov 2021
4 Open 4 document View SEC filing for 4 FORM 4 10 Nov 2021 09 Nov 2021
3 Open 3 document View SEC filing for 3 FORM 3 10 Nov 2021 09 Nov 2021
4 Open 4 document View SEC filing for 4 FORM 4 10 Nov 2021 09 Nov 2021
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 10 Nov 2021 08 Nov 2021 001-39675
4 Open 4 document View SEC filing for 4 FORM 4 04 Nov 2021 03 Nov 2021
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8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 03 Nov 2021 01 Nov 2021 001-39675
4 Open 4 document View SEC filing for 4 FORM 4 02 Nov 2021 29 Oct 2021
424B7 Open 424B7 document View SEC filing for 424B7 424B7 02 Nov 2021 333-260647
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FWP Open FWP document View SEC filing for FWP FWP 01 Nov 2021 333-260647
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10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q 10-Q 29 Oct 2021 24 Sep 2021 001-39675
8-K/A Open 8-K/A document | Open XBRL data View SEC filing for 8-K/A 8-K/A 28 Oct 2021 28 Oct 2021 001-39675
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 28 Oct 2021 28 Oct 2021 001-39675
4 Open 4 document View SEC filing for 4 FORM 4 25 Oct 2021 21 Oct 2021
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4 Open 4 document View SEC filing for 4 FORM 4 05 Oct 2021 01 Oct 2021
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4 Open 4 document View SEC filing for 4 FORM 4 14 Sep 2021 13 Sep 2021
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4 Open 4 document View SEC filing for 4 FORM 4 07 Sep 2021 03 Sep 2021
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4 Open 4 document View SEC filing for 4 FORM 4 20 Aug 2021 18 Aug 2021
4 Open 4 document View SEC filing for 4 FORM 4 17 Aug 2021 16 Aug 2021
4 Open 4 document View SEC filing for 4 FORM 4 09 Aug 2021 05 Aug 2021
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 09 Aug 2021 05 Aug 2021 001-39675
4 Open 4 document View SEC filing for 4 FORM 4 06 Aug 2021 05 Aug 2021
4 Open 4 document View SEC filing for 4 FORM 4 06 Aug 2021 05 Aug 2021
4 Open 4 document View SEC filing for 4 FORM 4 06 Aug 2021 05 Aug 2021
4 Open 4 document View SEC filing for 4 FORM 4 06 Aug 2021 05 Aug 2021
4 Open 4 document View SEC filing for 4 FORM 4 06 Aug 2021 05 Aug 2021
4 Open 4 document View SEC filing for 4 FORM 4 06 Aug 2021 05 Aug 2021
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4 Open 4 document View SEC filing for 4 FORM 4 03 Aug 2021 02 Aug 2021
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q 10-Q 30 Jul 2021 25 Jun 2021 001-39675
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 29 Jul 2021 29 Jul 2021 001-39675
8-K/A Open 8-K/A document | Open XBRL data View SEC filing for 8-K/A 8-K/A 21 Jul 2021 25 May 2021 001-39675
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4 Open 4 document View SEC filing for 4 FORM 4 06 Jul 2021 01 Jul 2021
4 Open 4 document View SEC filing for 4 FORM 4 06 Jul 2021 01 Jul 2021
DEF 14A Open DEF 14A document View SEC filing for DEF 14A DEF 14A 02 Jul 2021 01 Jul 2021 001-39675
DEFA14A Open DEFA14A document View SEC filing for DEFA14A DEFA14A 01 Jul 2021 001-39675
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 01 Jul 2021 30 Jun 2021 001-39675
4 Open 4 document View SEC filing for 4 FORM 4 17 Jun 2021 17 Jun 2021
4 Open 4 document View SEC filing for 4 FORM 4 03 Jun 2021 01 Jun 2021
4 Open 4 document View SEC filing for 4 FORM 4 03 Jun 2021 01 Jun 2021
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4 Open 4 document View SEC filing for 4 FORM 4 27 May 2021 26 May 2021
4 Open 4 document View SEC filing for 4 FORM 4 27 May 2021 26 May 2021
4 Open 4 document View SEC filing for 4 FORM 4 27 May 2021 25 May 2021
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10-K Open 10-K document | Open XBRL data View SEC filing for 10-K 10-K 19 May 2021 26 Mar 2021 001-39675
4 Open 4 document View SEC filing for 4 FORM 4 11 May 2021 07 May 2021
4 Open 4 document View SEC filing for 4 FORM 4 11 May 2021 07 May 2021
4 Open 4 document View SEC filing for 4 FORM 4 11 May 2021 07 May 2021
4 Open 4 document View SEC filing for 4 FORM 4 11 May 2021 07 May 2021
4 Open 4 document View SEC filing for 4 FORM 4 11 May 2021 07 May 2021
4 Open 4 document View SEC filing for 4 FORM 4 11 May 2021 07 May 2021
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 10 May 2021 05 May 2021 001-39675
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 05 May 2021 05 May 2021 001-39675
4 Open 4 document View SEC filing for 4 FORM 4 28 Apr 2021 26 Apr 2021
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 09 Apr 2021 09 Apr 2021 001-39675
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 09 Mar 2021 08 Mar 2021
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 09 Mar 2021 03 Mar 2021 001-39675
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 11 Feb 2021 09 Feb 2021
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 11 Feb 2021 09 Feb 2021
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 11 Feb 2021 09 Feb 2021
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 11 Feb 2021 09 Feb 2021
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 11 Feb 2021 09 Feb 2021
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 11 Feb 2021 09 Feb 2021
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 11 Feb 2021 09 Feb 2021
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 11 Feb 2021 09 Feb 2021
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 11 Feb 2021 09 Feb 2021
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 11 Feb 2021 09 Feb 2021
SC 13G Open SC 13G document View SEC filing for SC 13G SC 13G 08 Feb 2021 005-92108
SC 13G Open SC 13G document View SEC filing for SC 13G SC 13G 08 Feb 2021 005-92108
424B4 Open 424B4 document View SEC filing for 424B4 424B4 08 Feb 2021 333-252667
EFFECT Open EFFECT document View SEC filing for EFFECT 04 Feb 2021 333-252667
S-1MEF Open S-1MEF document View SEC filing for S-1MEF S-1MEF 04 Feb 2021 333-252753
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q 10-Q 02 Feb 2021 25 Dec 2020 001-39675
CORRESP Open CORRESP document View SEC filing for CORRESP 02 Feb 2021
CORRESP Open CORRESP document View SEC filing for CORRESP 02 Feb 2021
S-1 Open S-1 document | Open XBRL data View SEC filing for S-1 S-1 02 Feb 2021 333-252667
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 02 Feb 2021 02 Feb 2021 001-39675
UPLOAD Open UPLOAD document View SEC filing for UPLOAD 28 Jan 2021
DRS Open DRS document View SEC filing for DRS 25 Jan 2021 377-04087
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q 10-Q 20 Nov 2020 25 Sep 2020 001-39675
8-K/A Open 8-K/A document | Open XBRL data View SEC filing for 8-K/A 8-K/A 19 Nov 2020 19 Nov 2020 001-39675
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 19 Nov 2020 19 Nov 2020 001-39675
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 04 Nov 2020 02 Nov 2020
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 04 Nov 2020 02 Nov 2020
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 04 Nov 2020 02 Nov 2020
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 04 Nov 2020 02 Nov 2020
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 04 Nov 2020 02 Nov 2020
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 04 Nov 2020 02 Nov 2020
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 04 Nov 2020 02 Nov 2020
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 04 Nov 2020 02 Nov 2020
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 04 Nov 2020 02 Nov 2020
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 04 Nov 2020 02 Nov 2020
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 04 Nov 2020 02 Nov 2020
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 04 Nov 2020 02 Nov 2020
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 04 Nov 2020 02 Nov 2020
8-K Open 8-K document View SEC filing for 8-K 8-K 02 Nov 2020 02 Nov 2020 001-39675
S-8 Open S-8 document View SEC filing for S-8 FORM S-8 30 Oct 2020 333-249771
424B4 Open 424B4 document View SEC filing for 424B4 424B4 30 Oct 2020 333-249348
3 Open 3 document View SEC filing for 3 FORM 3 SUBMISSION 29 Oct 2020 29 Oct 2020
3 Open 3 document View SEC filing for 3 FORM 3 SUBMISSION 29 Oct 2020 29 Oct 2020
3 Open 3 document View SEC filing for 3 FORM 3 SUBMISSION 29 Oct 2020 29 Oct 2020
3 Open 3 document View SEC filing for 3 FORM 3 SUBMISSION 29 Oct 2020 29 Oct 2020
3 Open 3 document View SEC filing for 3 FORM 3 SUBMISSION 29 Oct 2020 29 Oct 2020
3 Open 3 document View SEC filing for 3 FORM 3 SUBMISSION 29 Oct 2020 29 Oct 2020
3 Open 3 document View SEC filing for 3 FORM 3 SUBMISSION 29 Oct 2020 29 Oct 2020
3 Open 3 document View SEC filing for 3 FORM 3 SUBMISSION 29 Oct 2020 29 Oct 2020
3 Open 3 document View SEC filing for 3 FORM 3 SUBMISSION 29 Oct 2020 29 Oct 2020
3 Open 3 document View SEC filing for 3 FORM 3 SUBMISSION 29 Oct 2020 29 Oct 2020
3 Open 3 document View SEC filing for 3 FORM 3 SUBMISSION 29 Oct 2020 29 Oct 2020
3 Open 3 document View SEC filing for 3 FORM 3 SUBMISSION 29 Oct 2020 29 Oct 2020
3 Open 3 document View SEC filing for 3 FORM 3 SUBMISSION 29 Oct 2020 29 Oct 2020
3 Open 3 document View SEC filing for 3 FORM 3 SUBMISSION 29 Oct 2020 29 Oct 2020
3 Open 3 document View SEC filing for 3 FORM 3 SUBMISSION 29 Oct 2020 29 Oct 2020
3 Open 3 document View SEC filing for 3 FORM 3 SUBMISSION 29 Oct 2020 29 Oct 2020
3 Open 3 document View SEC filing for 3 FORM 3 SUBMISSION 29 Oct 2020 29 Oct 2020
CERT Open CERT document View SEC filing for CERT 29 Oct 2020 001-39675
8-A12B Open 8-A12B document View SEC filing for 8-A12B 8-A12B 29 Oct 2020 001-39675
EFFECT Open EFFECT document View SEC filing for EFFECT 28 Oct 2020 333-249348
CORRESP Open CORRESP document View SEC filing for CORRESP 26 Oct 2020
CORRESP Open CORRESP document View SEC filing for CORRESP 26 Oct 2020
SEC STAFF LETTER Open SEC STAFF LETTER document View SEC filing for SEC STAFF LETTER 21 Oct 2020
S-1/A Open S-1/A document View SEC filing for S-1/A AMENDMENT NO. 2 TO FORM S-1 21 Oct 2020 333-249348
SEC STAFF LETTER Open SEC STAFF LETTER document View SEC filing for SEC STAFF LETTER 14 Oct 2020
S-1/A Open S-1/A document View SEC filing for S-1/A AMENDMENT NO. 1 TO FORM S-1 13 Oct 2020 333-249348
S-1 Open S-1 document View SEC filing for S-1 S-1 06 Oct 2020 333-249348
CORRESP Open CORRESP document View SEC filing for CORRESP 06 Oct 2020
UPLOAD Open UPLOAD document View SEC filing for UPLOAD 25 Sep 2020
DRS/A Open DRS/A document View SEC filing for DRS/A 11 Sep 2020 377-03365
DRSLTR Open DRSLTR document View SEC filing for DRSLTR 11 Sep 2020
UPLOAD Open UPLOAD document View SEC filing for UPLOAD 27 Aug 2020
DRS Open DRS document View SEC filing for DRS 03 Aug 2020 377-03365

About this filer

ALLEGRO MICROSYSTEMS, INC. files with the SEC under CIK 0000866291. This page aggregates EDGAR filings and related ownership activity.

Industry: Semiconductors & Related Devices.

See insider transactions for this issuer.

FAQ

What is a CIK?
A Central Index Key (CIK) is a unique identifier assigned by the SEC to each filer.
Why are some filings missing?
New filings appear as the SEC updates EDGAR, and older records can vary by availability.
How often is this page updated?
Updates follow new EDGAR submissions and periodic data refreshes.

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