Quick Takeaways
- BlackRock Portfolio Management LLC filed SCHEDULE 13G for MASIMO CORP Common Stock (MASI).
- Disclosed ownership: 10%.
- Date of event: 28 Feb 2025.
BlackRock Portfolio Management LLC - 28 Feb 2025 SCHEDULE 13G Report for MASIMO CORP Common Stock (MASI)
- Filing Manager
- BlackRock Portfolio Management LLC
- Reporting Manager
- BlackRock Portfolio Management LLC
- Security
- MASIMO CORP Common Stock
- Symbol
- MASI
- Shares outstanding
- 53,755,087 shares
- Disclosed Ownership
- 5,536,774 shares
- Ownership
- 10%
- Form type
- SCHEDULE 13G
- Filing time
- 04 Mar 2025, 12:39:14 UTC
- Date of event
- 28 Feb 2025
- Next filing
- 21 Jan 2026
- SEC
- View on sec.gov
Quoteable Key Fact
"BlackRock Portfolio Management LLC disclosed 10% ownership in MASIMO CORP Common Stock (MASI) on 28 Feb 2025."
What Changed
- No earlier schedule filing is available for direct comparison.
- Current filing was accepted on 04 Mar 2025, 12:39.
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.
Official SEC Source
Backed by Schedule 13D/13G
Beneficial ownership values are sourced from the original SEC Schedule 13D/13G filing.
See Original FilingReporting Managers (1)
| Name | Ownership | Shares Owned | sole voting power | shared voting power | Signature | Title | CIK |
|---|---|---|---|---|---|---|---|
| BlackRock Portfolio Management LLC | 10% | 5,536,774 | 5,522,219 | 0 | Spencer Fleming | Managing Director |