Amplitude, Inc. SEC EDGAR Filings (CIK 0001866692)

SEC EDGAR filings, ownership reports, and insider transactions for Amplitude, Inc..

Symbol
AMPL on Nasdaq
Industry
Services Prepackaged Software (Office Of Technology)
Business address
201 Third Street, Suite 200, San Francisco, CA, 94103
State of incorporation
DE
Fiscal year end
31 December
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Amplitude, Inc. has filed 447 SEC EDGAR filings since 11 Jun 2021

Latest Filings

Recent SEC filings for Amplitude, Inc. including 4, SCHEDULE 13G/A, 144 and more.

Form type Document Filing Description Filing date Reporting date File number(s)
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 07 Jan 2026 05 Jan 2026
SCHEDULE 13G/A Open SCHEDULE 13G/A document View SEC filing for SCHEDULE 13G/A 07 Jan 2026 005-93357
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 30 Dec 2025 26 Dec 2025
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 29 Dec 2025 24 Dec 2025
144 Open 144 document View SEC filing for 144 29 Dec 2025 001-40817
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 17 Dec 2025 15 Dec 2025
144 Open 144 document View SEC filing for 144 15 Dec 2025 001-40817
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 19 Nov 2025 17 Nov 2025
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 18 Nov 2025 15 Nov 2025
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 18 Nov 2025 15 Nov 2025
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 18 Nov 2025 15 Nov 2025
144 Open 144 document View SEC filing for 144 17 Nov 2025 001-40817
SCHEDULE 13G/A Open SCHEDULE 13G/A document View SEC filing for SCHEDULE 13G/A 14 Nov 2025 005-93357
SCHEDULE 13G Open SCHEDULE 13G document View SEC filing for SCHEDULE 13G 14 Nov 2025 005-93357
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 13 Nov 2025 11 Nov 2025
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 12 Nov 2025 07 Nov 2025
144 Open 144 document View SEC filing for 144 12 Nov 2025 001-40817
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q 10-Q 06 Nov 2025 30 Sep 2025 001-40817
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 05 Nov 2025 05 Nov 2025 001-40817
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 17 Oct 2025 15 Oct 2025
144 Open 144 document View SEC filing for 144 15 Oct 2025 001-40817
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 07 Oct 2025 05 Oct 2025
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 17 Sep 2025 15 Sep 2025
144 Open 144 document View SEC filing for 144 15 Sep 2025 001-40817
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 19 Aug 2025 15 Aug 2025
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 19 Aug 2025 15 Aug 2025
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 19 Aug 2025 15 Aug 2025
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 19 Aug 2025 15 Aug 2025
144 Open 144 document View SEC filing for 144 15 Aug 2025 001-40817
144 Open 144 document View SEC filing for 144 11 Aug 2025 001-40817
SCHEDULE 13G/A Open SCHEDULE 13G/A document View SEC filing for SCHEDULE 13G/A 11 Aug 2025 005-93357
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q 10-Q 07 Aug 2025 30 Jun 2025 001-40817
4 Open 4 document View SEC filing for 4 06 Aug 2025 04 Aug 2025
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 06 Aug 2025 06 Aug 2025 001-40817
SCHEDULE 13G/A Open SCHEDULE 13G/A document View SEC filing for SCHEDULE 13G/A 06 Aug 2025 005-93357
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 17 Jul 2025 11 Jun 2025
144 Open 144 document View SEC filing for 144 15 Jul 2025 001-40817
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 08 Jul 2025 05 Jul 2025
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 16 Jun 2025 12 Jun 2025
4 Open 4 document View SEC filing for 4 4 16 Jun 2025 12 Jun 2025
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 16 Jun 2025 12 Jun 2025
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 16 Jun 2025 12 Jun 2025
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 16 Jun 2025 12 Jun 2025
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 16 Jun 2025 12 Jun 2025
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 13 Jun 2025 11 Jun 2025
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 13 Jun 2025 11 Jun 2025
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 12 Jun 2025 06 Jun 2025 001-40817
144 Open 144 document View SEC filing for 144 11 Jun 2025 001-40817
144 Open 144 document View SEC filing for 144 11 Jun 2025 001-40817
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 21 May 2025 19 May 2025
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 19 May 2025 15 May 2025
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 19 May 2025 15 May 2025
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 19 May 2025 15 May 2025
144 Open 144 document View SEC filing for 144 19 May 2025 001-40817
SCHEDULE 13G/A Open SCHEDULE 13G/A document View SEC filing for SCHEDULE 13G/A 15 May 2025 005-93357
4 Open 4 document View SEC filing for 4 OWNERSHIP DOCUMENT 14 May 2025 12 May 2025
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 12 May 2025 08 May 2025
144 Open 144 document View SEC filing for 144 12 May 2025 001-40817
SCHEDULE 13G/A Open SCHEDULE 13G/A document View SEC filing for SCHEDULE 13G/A 12 May 2025 005-93357
144 Open 144 document View SEC filing for 144 08 May 2025 001-40817
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q 10-Q 07 May 2025 31 Mar 2025 001-40817
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 07 May 2025 07 May 2025 001-40817
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 29 Apr 2025 25 Apr 2025
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 29 Apr 2025 25 Apr 2025
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 29 Apr 2025 25 Apr 2025
ARS Open ARS document View SEC filing for ARS ARS 25 Apr 2025 31 Dec 2024 001-40817
DEFA14A Open DEFA14A document View SEC filing for DEFA14A DEFA14A 25 Apr 2025 001-40817
DEF 14A Open DEF 14A document | Open XBRL data View SEC filing for DEF 14A DEF 14A 25 Apr 2025 12 Jun 2025 001-40817
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 08 Apr 2025 05 Apr 2025
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 08 Apr 2025 05 Apr 2025
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 01 Apr 2025 28 Mar 2025 001-40817
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 17 Mar 2025 13 Mar 2025
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 12 Mar 2025 11 Mar 2025
144 Open 144 document View SEC filing for 144 11 Mar 2025 001-40817
4 Open 4 document View SEC filing for 4 OWNERSHIP DOCUMENT 26 Feb 2025 24 Feb 2025
SCHEDULE 13D/A Open SCHEDULE 13D/A document View SEC filing for SCHEDULE 13D/A 25 Feb 2025 005-93357
4 Open 4 document View SEC filing for 4 4 25 Feb 2025 22 Feb 2025
3 Open 3 document View SEC filing for 3 3 25 Feb 2025 22 Feb 2025
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 25 Feb 2025 22 Feb 2025 001-40817
4 Open 4 document View SEC filing for 4 OWNERSHIP DOCUMENT 24 Feb 2025 20 Feb 2025
144 Open 144 document View SEC filing for 144 24 Feb 2025 001-40817
S-8 Open S-8 document | Open XBRL data View SEC filing for S-8 S-8 20 Feb 2025 333-285093
10-K Open 10-K document | Open XBRL data View SEC filing for 10-K 10-K 20 Feb 2025 31 Dec 2024 001-40817
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 19 Feb 2025 19 Feb 2025 001-40817
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 18 Feb 2025 15 Feb 2025
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 18 Feb 2025 15 Feb 2025
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 29 Jan 2025 28 Jan 2025
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 07 Jan 2025 05 Jan 2025
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 16 Dec 2024 13 Dec 2024
144 Open 144 document View SEC filing for 144 13 Dec 2024 001-40817
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 19 Nov 2024 18 Nov 2024
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 19 Nov 2024 15 Nov 2024
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 19 Nov 2024 15 Nov 2024
144 Open 144 document View SEC filing for 144 18 Nov 2024 001-40817
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 14 Nov 2024 12 Nov 2024
SC 13G/A Open SC 13G/A document View SEC filing for SC 13G/A 14 Nov 2024 005-93357
SC 13G/A Open SC 13G/A document View SEC filing for SC 13G/A SC 13G/A 13 Nov 2024 005-93357
SC 13G/A Open SC 13G/A document View SEC filing for SC 13G/A SC 13G/A 13 Nov 2024 005-93357
144 Open 144 document View SEC filing for 144 12 Nov 2024 001-40817
SC 13G/A Open SC 13G/A document View SEC filing for SC 13G/A SC 13G/A 12 Nov 2024 005-93357
SC 13G/A Open SC 13G/A document View SEC filing for SC 13G/A 12 Nov 2024 005-93357
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q 10-Q 07 Nov 2024 30 Sep 2024 001-40817
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 07 Nov 2024 07 Nov 2024 001-40817
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 08 Oct 2024 05 Oct 2024
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 17 Sep 2024 15 Sep 2024
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 20 Aug 2024 19 Aug 2024
144 Open 144 document View SEC filing for 144 19 Aug 2024 001-40817
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 16 Aug 2024 15 Aug 2024
3 Open 3 document View SEC filing for 3 09 Aug 2024 01 Aug 2024
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q 10-Q 08 Aug 2024 30 Jun 2024 001-40817
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 08 Aug 2024 08 Aug 2024 001-40817
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 05 Aug 2024 05 Aug 2024 001-40817
4 Open 4 document View SEC filing for 4 09 Jul 2024 05 Jul 2024
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 13 Jun 2024 11 Jun 2024
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 13 Jun 2024 11 Jun 2024
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 13 Jun 2024 11 Jun 2024
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 13 Jun 2024 11 Jun 2024
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 13 Jun 2024 11 Jun 2024
4 Open 4 document View SEC filing for 4 13 Jun 2024 11 Jun 2024
4 Open 4 document View SEC filing for 4 13 Jun 2024 11 Jun 2024
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 12 Jun 2024 11 Jun 2024 001-40817
SC 13G/A Open SC 13G/A document View SEC filing for SC 13G/A 10 Jun 2024 005-93357
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 24 May 2024 23 May 2024 001-40817
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 20 May 2024 17 May 2024
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 17 May 2024 15 May 2024
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 17 May 2024 15 May 2024
144 Open 144 document View SEC filing for 144 17 May 2024 001-40817
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q 10-Q 09 May 2024 31 Mar 2024 001-40817
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 09 May 2024 09 May 2024 001-40817
ARS Open ARS document View SEC filing for ARS ARS 29 Apr 2024 31 Dec 2023 001-40817
DEFA14A Open DEFA14A document View SEC filing for DEFA14A DEFA14A 29 Apr 2024 001-40817
DEF 14A Open DEF 14A document | Open XBRL data View SEC filing for DEF 14A DEF 14A 29 Apr 2024 11 Jun 2024 001-40817
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 16 Apr 2024 15 Apr 2024
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 16 Apr 2024 15 Apr 2024
PRE 14A Open PRE 14A document | Open XBRL data View SEC filing for PRE 14A PRE 14A 15 Apr 2024 11 Jun 2024 001-40817
4 Open 4 document View SEC filing for 4 4 09 Apr 2024 05 Apr 2024
4 Open 4 document View SEC filing for 4 OWNERSHIP DOCUMENT 28 Feb 2024 26 Feb 2024
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 26 Feb 2024 23 Feb 2024
144 Open 144 document View SEC filing for 144 23 Feb 2024 001-40817
S-8 Open S-8 document View SEC filing for S-8 S-8 20 Feb 2024 333-277194
10-K Open 10-K document | Open XBRL data View SEC filing for 10-K 10-K 20 Feb 2024 31 Dec 2023 001-40817
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 20 Feb 2024 20 Feb 2024 001-40817
SC 13G/A Open SC 13G/A document View SEC filing for SC 13G/A 16 Feb 2024 005-93357
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 16 Feb 2024 15 Feb 2024
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 16 Feb 2024 15 Feb 2024
SC 13G/A Open SC 13G/A document View SEC filing for SC 13G/A SC 13G/A 14 Feb 2024 005-93357
SC 13G/A Open SC 13G/A document View SEC filing for SC 13G/A SC 13G/A 14 Feb 2024 005-93357
SC 13G Open SC 13G document View SEC filing for SC 13G 14 Feb 2024 005-93357
SC 13G/A Open SC 13G/A document View SEC filing for SC 13G/A SC 13G/A 13 Feb 2024 005-93357
SC 13G/A Open SC 13G/A document View SEC filing for SC 13G/A SC 13G/A 13 Feb 2024 005-93357
SC 13G/A Open SC 13G/A document View SEC filing for SC 13G/A SCHEDULE 13G/A 13 Feb 2024 005-93357
SC 13G/A Open SC 13G/A document View SEC filing for SC 13G/A SC 13G/A 13 Feb 2024 005-93357
SC 13G Open SC 13G document View SEC filing for SC 13G 09 Feb 2024 005-93357
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 05 Feb 2024 01 Feb 2024
SC 13G Open SC 13G document View SEC filing for SC 13G 29 Jan 2024 005-93357
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 09 Jan 2024 02 Jan 2024
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 09 Jan 2024 02 Jan 2024
4 Open 4 document View SEC filing for 4 OWNERSHIP DOCUMENT 13 Dec 2023 11 Dec 2023
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 20 Nov 2023 17 Nov 2023
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 17 Nov 2023 15 Nov 2023
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 17 Nov 2023 15 Nov 2023
144 Open 144 document View SEC filing for 144 17 Nov 2023 001-40817
SC 13D/A Open SC 13D/A document View SEC filing for SC 13D/A SC 13D/A 14 Nov 2023 005-93357
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q 10-Q 07 Nov 2023 30 Sep 2023 001-40817
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 07 Nov 2023 07 Nov 2023 001-40817
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 21 Aug 2023 17 Aug 2023
4 Open 4 document View SEC filing for 4 17 Aug 2023 15 Aug 2023
4 Open 4 document View SEC filing for 4 17 Aug 2023 15 Aug 2023
144 Open 144 document View SEC filing for 144 17 Aug 2023 001-40817
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q 10-Q 08 Aug 2023 30 Jun 2023 001-40817
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 08 Aug 2023 08 Aug 2023 001-40817
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 07 Jul 2023 05 Jul 2023
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 12 Jun 2023 08 Jun 2023
4 Open 4 document View SEC filing for 4 12 Jun 2023 08 Jun 2023
4 Open 4 document View SEC filing for 4 12 Jun 2023 08 Jun 2023
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 09 Jun 2023 08 Jun 2023 001-40817
4 Open 4 document View SEC filing for 4 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES 08 Jun 2023 06 Jun 2023
4 Open 4 document View SEC filing for 4 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES 08 Jun 2023 06 Jun 2023
4 Open 4 document View SEC filing for 4 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES 08 Jun 2023 06 Jun 2023
144 Open 144 document View SEC filing for 144 08 Jun 2023 001-40817
144 Open 144 document View SEC filing for 144 08 Jun 2023 001-40817
144 Open 144 document View SEC filing for 144 08 Jun 2023 001-40817
144 Open 144 document View SEC filing for 144 07 Jun 2023 001-40817
144 Open 144 document View SEC filing for 144 07 Jun 2023 001-40817
144 Open 144 document View SEC filing for 144 07 Jun 2023 001-40817
144 Open 144 document View SEC filing for 144 06 Jun 2023 001-40817
144 Open 144 document View SEC filing for 144 06 Jun 2023 001-40817
144 Open 144 document View SEC filing for 144 06 Jun 2023 001-40817
4 Open 4 document View SEC filing for 4 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES 05 Jun 2023 01 Jun 2023
4 Open 4 document View SEC filing for 4 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES 05 Jun 2023 01 Jun 2023
4 Open 4 document View SEC filing for 4 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES 05 Jun 2023 01 Jun 2023
144 Open 144 document View SEC filing for 144 05 Jun 2023 001-40817
144 Open 144 document View SEC filing for 144 05 Jun 2023 001-40817
144 Open 144 document View SEC filing for 144 05 Jun 2023 001-40817
144 Open 144 document View SEC filing for 144 02 Jun 2023 001-40817
144 Open 144 document View SEC filing for 144 02 Jun 2023 001-40817
144 Open 144 document View SEC filing for 144 02 Jun 2023 001-40817
144 Open 144 document View SEC filing for 144 01 Jun 2023 001-40817
144 Open 144 document View SEC filing for 144 01 Jun 2023 001-40817
144 Open 144 document View SEC filing for 144 01 Jun 2023 001-40817
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 19 May 2023 18 May 2023
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 19 May 2023 17 May 2023
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 19 May 2023 18 May 2023
144 Open 144 document View SEC filing for 144 18 May 2023 001-40817
144 Open 144 document View SEC filing for 144 18 May 2023 001-40817
144 Open 144 document View SEC filing for 144 17 May 2023 001-40817
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q 10-Q 10 May 2023 31 Mar 2023 001-40817
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 09 May 2023 09 May 2023 001-40817
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 05 May 2023 05 May 2023 001-40817
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 03 May 2023 01 May 2023
ARS Open ARS document View SEC filing for ARS ARS 27 Apr 2023 31 Dec 2022 001-40817
DEFA14A Open DEFA14A document View SEC filing for DEFA14A DEFA14A 27 Apr 2023 001-40817
DEF 14A Open DEF 14A document | Open XBRL data View SEC filing for DEF 14A DEF 14A 27 Apr 2023 001-40817
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 12 Apr 2023 10 Apr 2023
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 05 Apr 2023 03 Apr 2023 001-40817
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 05 Apr 2023 30 Mar 2023 001-40817
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 23 Mar 2023 21 Mar 2023
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 17 Mar 2023 15 Mar 2023
4 Open 4 document View SEC filing for 4 OWNERSHIP DOCUMENT 09 Mar 2023 07 Mar 2023
SC 13G/A Open SC 13G/A document View SEC filing for SC 13G/A 08 Mar 2023 005-93357
3 Open 3 document View SEC filing for 3 FORM 3 27 Feb 2023 22 Feb 2023
4 Open 4 document View SEC filing for 4 OWNERSHIP DOCUMENT 24 Feb 2023 22 Feb 2023
SC 13D/A Open SC 13D/A document View SEC filing for SC 13D/A SC 13D/A 22 Feb 2023 005-93357
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 21 Feb 2023 17 Feb 2023
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 21 Feb 2023 16 Feb 2023
S-8 Open S-8 document View SEC filing for S-8 S-8 16 Feb 2023 333-269834
10-K Open 10-K document | Open XBRL data View SEC filing for 10-K 10-K 16 Feb 2023 31 Dec 2022 001-40817
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 15 Feb 2023 15 Feb 2023 001-40817
SC 13G/A Open SC 13G/A document View SEC filing for SC 13G/A SC 13G/A 14 Feb 2023 005-93357
5 Open 5 document View SEC filing for 5 14 Feb 2023 31 Dec 2022
5 Open 5 document View SEC filing for 5 14 Feb 2023 31 Dec 2022
SC 13G/A Open SC 13G/A document View SEC filing for SC 13G/A SC 13G/A 14 Feb 2023 005-93357
SC 13G/A Open SC 13G/A document View SEC filing for SC 13G/A SC 13G/A 14 Feb 2023 005-93357
SC 13G/A Open SC 13G/A document View SEC filing for SC 13G/A SC 13G/A 13 Feb 2023 005-93357
SC 13G/A Open SC 13G/A document View SEC filing for SC 13G/A SC 13G/A 13 Feb 2023 005-93357
SC 13G/A Open SC 13G/A document View SEC filing for SC 13G/A SC 13G/A 13 Feb 2023 005-93357
SC 13G Open SC 13G document View SEC filing for SC 13G 13 Feb 2023 005-93357
SC 13G/A Open SC 13G/A document View SEC filing for SC 13G/A SCHEDULE 13G/A 09 Feb 2023 005-93357
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 03 Feb 2023 01 Feb 2023
SC 13G Open SC 13G document View SEC filing for SC 13G 03 Feb 2023 005-93357
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 17 Jan 2023 15 Jan 2023
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 11 Jan 2023 09 Jan 2023
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 09 Jan 2023 05 Jan 2023
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 09 Jan 2023 05 Jan 2023
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 03 Jan 2023 29 Dec 2022
4 Open 4 document View SEC filing for 4 FORM 4 02 Dec 2022 30 Nov 2022
4 Open 4 document View SEC filing for 4 FORM 4 02 Dec 2022 30 Nov 2022
4 Open 4 document View SEC filing for 4 FORM 4 02 Dec 2022 30 Nov 2022
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 22 Nov 2022 18 Nov 2022
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 18 Nov 2022 17 Nov 2022
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 18 Nov 2022 18 Nov 2022
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 18 Nov 2022 18 Nov 2022
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 14 Nov 2022 31 Oct 2022
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q 10-Q 03 Nov 2022 30 Sep 2022 001-40817
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 02 Nov 2022 02 Nov 2022 001-40817
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 12 Oct 2022 10 Oct 2022
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 07 Oct 2022 05 Oct 2022
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 07 Oct 2022 05 Oct 2022
4 Open 4 document View SEC filing for 4 FORM 4 06 Sep 2022 01 Sep 2022
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 02 Sep 2022 31 Aug 2022
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 23 Aug 2022 15 Aug 2022
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 19 Aug 2022 17 Aug 2022
4 Open 4 document View SEC filing for 4 OWNERSHIP DOCUMENT 12 Aug 2022 10 Aug 2022
4 Open 4 document View SEC filing for 4 OWNERSHIP DOCUMENT 12 Aug 2022 10 Aug 2022
4 Open 4 document View SEC filing for 4 OWNERSHIP DOCUMENT 11 Aug 2022 09 Aug 2022
4 Open 4 document View SEC filing for 4 OWNERSHIP DOCUMENT 11 Aug 2022 09 Aug 2022
4 Open 4 document View SEC filing for 4 OWNERSHIP DOCUMENT 10 Aug 2022 08 Aug 2022
4 Open 4 document View SEC filing for 4 OWNERSHIP DOCUMENT 10 Aug 2022 08 Aug 2022
4 Open 4 document View SEC filing for 4 OWNERSHIP DOCUMENT 10 Aug 2022 08 Aug 2022
SC 13D/A Open SC 13D/A document View SEC filing for SC 13D/A SC 13D/A 10 Aug 2022 005-93357
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q 10-Q 04 Aug 2022 30 Jun 2022 001-40817
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 03 Aug 2022 03 Aug 2022 001-40817
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 18 Jul 2022 15 Jul 2022
4/A Open 4/A document View SEC filing for 4/A FORM 4/A SUBMISSION 08 Jul 2022 05 Jul 2022
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 06 Jul 2022 05 Jul 2022
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 06 Jul 2022 05 Jul 2022
3 Open 3 document View SEC filing for 3 PRIMARY DOCUMENT 01 Jul 2022 30 Jun 2022
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 01 Jul 2022 30 Jun 2022 001-40817
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 17 Jun 2022 15 Jun 2022
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 17 Jun 2022 15 Jun 2022
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 13 Jun 2022 09 Jun 2022 001-40817
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 10 Jun 2022 10 Jun 2022
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 10 Jun 2022 09 Jun 2022
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 10 Jun 2022 09 Jun 2022
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 10 Jun 2022 09 Jun 2022
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 19 May 2022 17 May 2022
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 19 May 2022 17 May 2022
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 11 May 2022 10 May 2022
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 11 May 2022 09 May 2022
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 11 May 2022 09 May 2022
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 11 May 2022 09 May 2022
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 10 May 2022 10 May 2022
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4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 19 Nov 2021 17 Nov 2021
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424B3 Open 424B3 document View SEC filing for 424B3 424B3 09 Nov 2021 333-259168
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q 10-Q 09 Nov 2021 30 Sep 2021 001-40817
424B3 Open 424B3 document View SEC filing for 424B3 424B3 09 Nov 2021 333-259168
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 09 Nov 2021 08 Nov 2021 001-40817
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 28 Oct 2021 26 Oct 2021
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4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 20 Oct 2021 18 Oct 2021
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 20 Oct 2021 18 Oct 2021
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 15 Oct 2021 13 Oct 2021
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 15 Oct 2021 13 Oct 2021
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 12 Oct 2021 08 Oct 2021
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4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 30 Sep 2021 28 Sep 2021
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4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 30 Sep 2021 28 Sep 2021
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 30 Sep 2021 28 Sep 2021
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 30 Sep 2021 28 Sep 2021
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 30 Sep 2021 28 Sep 2021
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 30 Sep 2021 28 Sep 2021
4 Open 4 document View SEC filing for 4 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES 30 Sep 2021 28 Sep 2021
4 Open 4 document View SEC filing for 4 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES 30 Sep 2021 28 Sep 2021
424B4 Open 424B4 document View SEC filing for 424B4 424B4 28 Sep 2021 333-259168
FWP Open FWP document View SEC filing for FWP FWP 27 Sep 2021 333-259168
8-K Open 8-K document View SEC filing for 8-K 8-K 27 Sep 2021 27 Sep 2021 001-40817
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 24 Sep 2021 30 Mar 2021
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4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 23 Sep 2021 21 Sep 2021
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4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 23 Sep 2021 30 Aug 2021
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4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 23 Sep 2021 21 Sep 2021
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 23 Sep 2021 21 Sep 2021
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 23 Sep 2021 21 Sep 2021
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 23 Sep 2021 21 Sep 2021
FWP Open FWP document View SEC filing for FWP FWP 23 Sep 2021 333-259168
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3 Open 3 document View SEC filing for 3 FORM 3 SUBMISSION 21 Sep 2021 21 Sep 2021
3 Open 3 document View SEC filing for 3 FORM 3 SUBMISSION 21 Sep 2021 21 Sep 2021
3 Open 3 document View SEC filing for 3 FORM 3 SUBMISSION 21 Sep 2021 21 Sep 2021
3 Open 3 document View SEC filing for 3 FORM 3 SUBMISSION 21 Sep 2021 21 Sep 2021
3 Open 3 document View SEC filing for 3 INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES 21 Sep 2021 21 Sep 2021
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S-8 Open S-8 document View SEC filing for S-8 S-8 21 Sep 2021 333-259698
8-K Open 8-K document View SEC filing for 8-K 8-K 21 Sep 2021 21 Sep 2021 001-40817
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About this filer

Amplitude, Inc. files with the SEC under CIK 0001866692. This page aggregates EDGAR filings and related ownership activity.

Industry: Services Prepackaged Software.

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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