Quick Takeaways
- WELLINGTON MANAGEMENT GROUP LLP filed SCHEDULE 13G for Amplitude, Inc. Common Stock (AMPL).
- Disclosed ownership: 11%.
- Date of event: 31 Mar 2026.
WELLINGTON MANAGEMENT GROUP LLP - 31 Mar 2026 SCHEDULE 13G Report for Amplitude, Inc. Common Stock (AMPL)
- Filing Manager
- WELLINGTON MANAGEMENT GROUP LLP
- Reporting Manager
- Wellington Management Group LLP
- Security
- Amplitude, Inc. Common Stock
- Symbol
- AMPL
- Shares outstanding
- 104,248,187 shares
- Disclosed Ownership
- 11,154,556 shares
- Ownership
- 11%
- Form type
- SCHEDULE 13G
- Filing time
- 07 Apr 2026, 07:58:40 UTC
- Date of event
- 31 Mar 2026
- SEC
- View on sec.gov
Quoteable Key Fact
"WELLINGTON MANAGEMENT GROUP LLP disclosed 11% ownership in Amplitude, Inc. Common Stock (AMPL) on 31 Mar 2026."
What Changed
- No earlier schedule filing is available for direct comparison.
- Current filing was accepted on 07 Apr 2026, 07:58.
Why This Matters
- This page explains what this Schedule 13D/13G filing tells you before manager-level rows.
- You can verify ownership claims directly against the original SEC filing.
Source Evidence
Backed by Schedule 13D/13G
See Original Filing
Beneficial ownership values are sourced from the original SEC Schedule 13D/13G filing.
Reporting Managers (4)
| Name | Ownership | Shares Owned | sole voting power | shared voting power | Signature | Title | CIK |
|---|---|---|---|---|---|---|---|
| Wellington Management Group LLP | 11% | 11,154,556 | 0 | 6,578,413 | Matthew Revell | Compliance Manager | |
| Wellington Group Holdings LLP | 11% | 11,154,556 | 0 | 6,578,413 | Taisia Lowe | Regulatory Analyst | |
| Wellington Investment Advisors Holdings LLP | 11% | 11,154,556 | 0 | 6,578,413 | Taisia Lowe | Regulatory Analyst | |
| Wellington Management Company LLP | 8.8% | 11,154,556 | 0 | 6,459,651 | Taisia Lowe | Regulatory Analyst |