Amplitude, Inc. - AMPL
Ownership (Schedule 13D / 13G) · latest 50 filings
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| Filed | Form | Reporting person | Percent | Shares | SEC |
|---|---|---|---|---|---|
| Apr 07, 2026 | SCHEDULE 13G | Wellington Management Group LLP | 10.7% | 11,154,556 | View |
| Apr 07, 2026 | SCHEDULE 13G | Wellington Group Holdings LLP | 10.7% | 11,154,556 | View |
| Apr 07, 2026 | SCHEDULE 13G | Wellington Investment Advisors Holdings LLP | 10.7% | 11,154,556 | View |
| Apr 07, 2026 | SCHEDULE 13G | Wellington Management Company LLP | 8.8% | 11,154,556 | View |
| Apr 07, 2026 | SCHEDULE 13G | Wellington Management Group LLP | 10.7% | 11,154,556 | View |
| Apr 07, 2026 | SCHEDULE 13G | Wellington Group Holdings LLP | 10.7% | 11,154,556 | View |
| Apr 07, 2026 | SCHEDULE 13G | Wellington Investment Advisors Holdings LLP | 10.7% | 11,154,556 | View |
| Apr 07, 2026 | SCHEDULE 13G | Wellington Management Company LLP | 8.8% | 11,154,556 | View |
| Mar 26, 2026 | SCHEDULE 13G/A | The Vanguard Group | 0.0% | 0 | View |
| Feb 17, 2026 | SCHEDULE 13G/A | T. Rowe Price Investment Management, Inc. | 0.0% | 441 | View |
| Jan 07, 2026 | SCHEDULE 13G/A | The Vanguard Group | 10.44% | 10,825,568 | View |
| Nov 14, 2025 | SCHEDULE 13G | AllianceBernstein L.P. | 5.9% | 6,025,390 | View |
| Nov 14, 2025 | SCHEDULE 13G/A | T. Rowe Price Investment Management, Inc. | 5.0% | 5,071,834 | View |
Percent = "% of class represented by amount beneficially owned" for this reporting person in the filed 13D/13G.
Shares = reported beneficial ownership amount for the same row (not portfolio shares from 13F).
Amendments (/A) can repeat the same holder over time, so rows should not be summed.
Extraction is best-effort from filing text and can be missing or noisy; verify exact figures via the SEC link in each row.