WELLINGTON MANAGEMENT GROUP LLP 13D and 13G filings for Amplitude, Inc.:
- Schedule 13D must be filed within ten days after a person or an organization acquires beneficial ownership of more than 5% of a voting class of a company's equity securities.
- Shares have been adjusted for stock splits.
| Reported DateTime | Transaction Date | Type | Company Symbol | Filed By Symbol | Shares Owned % Owned | Shares Vs. Prev Report | View |
| 2026-04-07 07:58 am Unchanged | 2026-03-31 | 13G | AMPLITUDE INC AMPL | WELLINGTON MANAGEMENT GROUP LLP | 11,154,556 10.700% | 0 (Unchanged) | Filing |
| 2026-04-07 07:57 am Purchase | 2026-03-31 | 13G | AMPLITUDE INC AMPL | WELLINGTON MANAGEMENT GROUP LLP | 11,154,556 10.700% | 11,154,556 (New Position) | Filing |