Amplitude, Inc. — All Filings
460 total filings on record
Public companies registered with the SEC are required to file periodic reports, disclosures, and notices throughout the year. The most important are the 10-K (annual report), 10-Q (quarterly report), and 8-K (material event notice). Use the filters below to narrow by form type.
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144
3
4
4/A
424B3
424B4
5
8-A12B
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ARS
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CORRESP
D
DEF 14A
DEFA14A
DRS
DRS/A
DRSLTR
EFFECT
FWP
POS AM
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S-1
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S-8
SC 13D
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SC 13G
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SCHEDULE 13D/A
SCHEDULE 13G
SCHEDULE 13G/A
UPLOAD
| Form | Description | Accession Number | Filed | Period |
|---|---|---|---|---|
| SCHEDULE 13G/A | — | 0000102909-26-000600 | Mar 26, 2026 | — |
| 3 | — | 0001610717-26-000102 | Mar 17, 2026 | Mar 6, 2026 |
| 4 | PRIMARY DOCUMENT | 0001883022-26-000006 | Mar 10, 2026 | Mar 6, 2026 |
| 4 | PRIMARY DOCUMENT | 0001883022-26-000005 | Mar 9, 2026 | Mar 5, 2026 |
| 144 | — | 0001950047-26-002274 | Mar 5, 2026 | — |
| 8-K | 8-K | 0001193125-26-067137 | Feb 24, 2026 | — |
| S-8 | S-8 | 0001193125-26-059351 | Feb 19, 2026 | — |
| 10-K | 10-K | 0001193125-26-057847 | Feb 19, 2026 | Dec 31, 2025 |
| 8-K | 8-K | 0001193125-26-057052 | Feb 18, 2026 | — |
| 4 | PRIMARY DOCUMENT | 0001728084-26-000002 | Feb 17, 2026 | Feb 15, 2026 |
| 4 | PRIMARY DOCUMENT | 0001883022-26-000002 | Feb 17, 2026 | Feb 15, 2026 |
| 4 | PRIMARY DOCUMENT | 0002032390-26-000002 | Feb 17, 2026 | Feb 15, 2026 |
| SCHEDULE 13G/A | — | 0001897612-26-000287 | Feb 17, 2026 | — |
| 4 | PRIMARY DOCUMENT | 0001735409-26-000003 | Jan 7, 2026 | Jan 5, 2026 |
| SCHEDULE 13G/A | — | 0000102909-26-000018 | Jan 7, 2026 | — |
| 4 | PRIMARY DOCUMENT | 0001882913-25-000007 | Dec 30, 2025 | Dec 26, 2025 |
| 4 | PRIMARY DOCUMENT | 0001882913-25-000005 | Dec 29, 2025 | Dec 24, 2025 |
| 144 | — | 0001950047-25-010695 | Dec 29, 2025 | — |
| 4 | PRIMARY DOCUMENT | 0001542687-25-000011 | Dec 17, 2025 | Dec 15, 2025 |
| 144 | — | 0001950047-25-010304 | Dec 15, 2025 | — |
| 4 | PRIMARY DOCUMENT | 0001542687-25-000009 | Nov 19, 2025 | Nov 17, 2025 |
| 4 | PRIMARY DOCUMENT | 0001883022-25-000003 | Nov 18, 2025 | Nov 15, 2025 |
| 4 | PRIMARY DOCUMENT | 0002032390-25-000006 | Nov 18, 2025 | Nov 15, 2025 |
| 4 | PRIMARY DOCUMENT | 0001728084-25-000003 | Nov 18, 2025 | Nov 15, 2025 |
| 144 | — | 0001950047-25-008954 | Nov 17, 2025 | — |
| SCHEDULE 13G/A | — | 0001897612-25-000551 | Nov 14, 2025 | — |
| SCHEDULE 13G | — | 0001109448-25-000126 | Nov 14, 2025 | — |
| 4 | PRIMARY DOCUMENT | 0001882913-25-000003 | Nov 13, 2025 | Nov 11, 2025 |
| 4 | PRIMARY DOCUMENT | 0002032390-25-000004 | Nov 12, 2025 | Nov 7, 2025 |
| 144 | — | 0001950047-25-008692 | Nov 12, 2025 | — |
| 10-Q | 10-Q | 0001193125-25-267492 | Nov 6, 2025 | Sep 30, 2025 |
| 8-K | 8-K | 0001193125-25-266930 | Nov 5, 2025 | — |
| 4 | PRIMARY DOCUMENT | 0001542687-25-000007 | Oct 17, 2025 | Oct 15, 2025 |
| 144 | — | 0001950047-25-007994 | Oct 15, 2025 | — |
| 4 | PRIMARY DOCUMENT | 0001735409-25-000005 | Oct 7, 2025 | Oct 5, 2025 |
| 4 | PRIMARY DOCUMENT | 0001542687-25-000005 | Sep 17, 2025 | Sep 15, 2025 |
| 144 | — | 0001950047-25-007130 | Sep 15, 2025 | — |
| 4 | PRIMARY DOCUMENT | 0001562180-25-005899 | Aug 19, 2025 | Aug 15, 2025 |
| 4 | PRIMARY DOCUMENT | 0001562180-25-005898 | Aug 19, 2025 | Aug 15, 2025 |
| 4 | PRIMARY DOCUMENT | 0001562180-25-005897 | Aug 19, 2025 | Aug 15, 2025 |
| 4 | PRIMARY DOCUMENT | 0001562180-25-005896 | Aug 19, 2025 | Aug 15, 2025 |
| 144 | — | 0001950047-25-005922 | Aug 15, 2025 | — |
| 144 | — | 0001950047-25-005625 | Aug 11, 2025 | — |
| SCHEDULE 13G/A | — | 0001140361-25-030090 | Aug 11, 2025 | — |
| 10-Q | 10-Q | 0000950170-25-104357 | Aug 7, 2025 | Jun 30, 2025 |
| 4 | — | 0001610717-25-000291 | Aug 6, 2025 | Aug 4, 2025 |
| 8-K | 8-K | 0000950170-25-104010 | Aug 6, 2025 | — |
| SCHEDULE 13G/A | — | 0000315066-25-001964 | Aug 6, 2025 | — |
| 4 | PRIMARY DOCUMENT | 0001562180-25-005458 | Jul 17, 2025 | Jun 11, 2025 |
| 144 | — | 0001950047-25-005038 | Jul 15, 2025 | — |