Quick Takeaways
- BlackRock, Inc. filed SCHEDULE 13G/A for Amrize Ltd Common Stock (AMRZ).
- Disclosed ownership: 3.6%.
- Date of event: 31 Dec 2025.
BlackRock, Inc. - 31 Dec 2025 SCHEDULE 13G/A Report for Amrize Ltd Common Stock (AMRZ)
- Filing Manager
- BlackRock, Inc.
- Reporting Manager
- BlackRock, Inc.
- Security
- Amrize Ltd Common Stock
- Symbol
- AMRZ
- Shares outstanding
- 552,442,722 shares
- Disclosed Ownership
- 19,887,938 shares
- Ownership
- 3.6%
- Form type
- SCHEDULE 13G/A
- Filing time
- 21 Jan 2026, 12:30:29 UTC
- Date of event
- 31 Dec 2025
- Previous filing
- 17 Oct 2025
- SEC
- View on sec.gov
Quoteable Key Fact
"BlackRock, Inc. disclosed 3.6% ownership in Amrize Ltd Common Stock (AMRZ) on 31 Dec 2025."
What Changed
- Previous schedule filing date: 17 Oct 2025.
- Current filing was accepted on 21 Jan 2026, 12:30.
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 (1)
| Name | Ownership | Shares Owned | sole voting power | shared voting power | Signature | Title | CIK |
|---|---|---|---|---|---|---|---|
| BlackRock, Inc. | 3.6% | 19,887,938 | 18,280,793 | 0 | Spencer Fleming | Managing Director |