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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UPLOAD
| Form | Description | Accession Number | Filed | Period |
|---|---|---|---|---|
| 4 | PRIMARY DOCUMENT | 0001562180-25-005351 | Jul 8, 2025 | Jul 5, 2025 |
| 4 | PRIMARY DOCUMENT | 0001562180-25-004863 | Jun 16, 2025 | Jun 12, 2025 |
| 4 | PRIMARY DOCUMENT | 0001562180-25-004855 | Jun 16, 2025 | Jun 12, 2025 |
| 4 | PRIMARY DOCUMENT | 0001562180-25-004856 | Jun 16, 2025 | Jun 12, 2025 |
| 4 | 4 | 0000950170-25-086864 | Jun 16, 2025 | Jun 12, 2025 |
| 4 | PRIMARY DOCUMENT | 0001562180-25-004857 | Jun 16, 2025 | Jun 12, 2025 |
| 4 | PRIMARY DOCUMENT | 0001562180-25-004858 | Jun 16, 2025 | Jun 12, 2025 |
| 4 | PRIMARY DOCUMENT | 0001562180-25-004823 | Jun 13, 2025 | Jun 11, 2025 |
| 4 | PRIMARY DOCUMENT | 0001562180-25-004822 | Jun 13, 2025 | Jun 11, 2025 |
| 8-K | 8-K | 0001193125-25-139911 | Jun 12, 2025 | Jun 6, 2025 |
| 144 | — | 0001950047-25-004172 | Jun 11, 2025 | — |
| 144 | — | 0001950047-25-004173 | Jun 11, 2025 | — |
| 4 | PRIMARY DOCUMENT | 0001562180-25-004067 | May 21, 2025 | May 19, 2025 |
| 4 | PRIMARY DOCUMENT | 0001562180-25-004003 | May 19, 2025 | May 15, 2025 |
| 144 | — | 0001950047-25-003195 | May 19, 2025 | — |
| 4 | PRIMARY DOCUMENT | 0001562180-25-004004 | May 19, 2025 | May 15, 2025 |
| 4 | PRIMARY DOCUMENT | 0001562180-25-004002 | May 19, 2025 | May 15, 2025 |
| SCHEDULE 13G/A | — | 0001415889-25-013173 | May 15, 2025 | — |
| 4 | OWNERSHIP DOCUMENT | 0001104659-25-048478 | May 14, 2025 | May 12, 2025 |
| 4 | PRIMARY DOCUMENT | 0001562180-25-003763 | May 12, 2025 | May 8, 2025 |
| SCHEDULE 13G/A | — | 0000315066-25-001437 | May 12, 2025 | — |
| 144 | — | 0001950047-25-002921 | May 12, 2025 | — |
| 144 | — | 0001950047-25-002811 | May 8, 2025 | — |
| 8-K | 8-K | 0000950170-25-065627 | May 7, 2025 | — |
| 10-Q | 10-Q | 0000950170-25-065639 | May 7, 2025 | Mar 31, 2025 |
| 4 | PRIMARY DOCUMENT | 0001562180-25-003353 | Apr 29, 2025 | Apr 25, 2025 |
| 4 | PRIMARY DOCUMENT | 0001562180-25-003350 | Apr 29, 2025 | Apr 25, 2025 |
| 4 | PRIMARY DOCUMENT | 0001562180-25-003351 | Apr 29, 2025 | Apr 25, 2025 |
| ARS | ARS | 0001140361-25-015794 | Apr 25, 2025 | Dec 31, 2024 |
| DEFA14A | DEFA14A | 0001140361-25-015784 | Apr 25, 2025 | — |
| DEF 14A | DEF 14A | 0001140361-25-015778 | Apr 25, 2025 | Jun 12, 2025 |
| 4 | PRIMARY DOCUMENT | 0001562180-25-003076 | Apr 8, 2025 | Apr 5, 2025 |
| 4 | PRIMARY DOCUMENT | 0001562180-25-003077 | Apr 8, 2025 | Apr 5, 2025 |
| 8-K | 8-K | 0001193125-25-070392 | Apr 1, 2025 | Mar 28, 2025 |
| 4 | PRIMARY DOCUMENT | 0001562180-25-002468 | Mar 17, 2025 | Mar 13, 2025 |
| 4 | PRIMARY DOCUMENT | 0001562180-25-002333 | Mar 12, 2025 | Mar 11, 2025 |
| 144 | — | 0001950047-25-001755 | Mar 11, 2025 | — |
| 4 | OWNERSHIP DOCUMENT | 0001104659-25-017506 | Feb 26, 2025 | Feb 24, 2025 |
| 3 | 3 | 0000950170-25-026794 | Feb 25, 2025 | Feb 22, 2025 |
| 4 | 4 | 0000950170-25-026797 | Feb 25, 2025 | Feb 22, 2025 |
| SCHEDULE 13D/A | — | 0000950170-25-027242 | Feb 25, 2025 | — |
| 8-K | 8-K | 0001193125-25-035156 | Feb 25, 2025 | Feb 22, 2025 |
| 144 | — | 0001950047-25-001167 | Feb 24, 2025 | — |
| 4 | OWNERSHIP DOCUMENT | 0001104659-25-016600 | Feb 24, 2025 | Feb 20, 2025 |
| S-8 | S-8 | 0001193125-25-030782 | Feb 20, 2025 | — |
| 10-K | 10-K | 0000950170-25-024135 | Feb 20, 2025 | Dec 31, 2024 |
| 8-K | 8-K | 0000950170-25-023152 | Feb 19, 2025 | — |
| 4 | PRIMARY DOCUMENT | 0001562180-25-001239 | Feb 18, 2025 | Feb 15, 2025 |
| 4 | PRIMARY DOCUMENT | 0001562180-25-001240 | Feb 18, 2025 | Feb 15, 2025 |
| 4 | PRIMARY DOCUMENT | 0001562180-25-000671 | Jan 29, 2025 | Jan 28, 2025 |