Quick Takeaways
- VANGUARD PORTFOLIO MANAGEMENT LLC filed SCHEDULE 13G for Alarm.com Holdings Inc Common Stock (ALRM).
- Disclosed ownership: 8%.
- Date of event: 31 Mar 2026.
VANGUARD PORTFOLIO MANAGEMENT LLC - 31 Mar 2026 SCHEDULE 13G Report for Alarm.com Holdings Inc Common Stock (ALRM)
- Filing Manager
- VANGUARD PORTFOLIO MANAGEMENT LLC
- Reporting Manager
- Vanguard Portfolio Management
- Security
- Alarm.com Holdings Inc Common Stock
- Symbol
- ALRM
- Shares outstanding
- 49,715,199 shares
- Disclosed Ownership
- 3,997,102 shares
- Ownership
- 8%
- Form type
- SCHEDULE 13G
- Filing time
- 28 Apr 2026, 15:52:02 UTC
- Date of event
- 31 Mar 2026
- SEC
- View on sec.gov
Quoteable Key Fact
"VANGUARD PORTFOLIO MANAGEMENT LLC disclosed 8% ownership in Alarm.com Holdings Inc Common Stock (ALRM) on 31 Mar 2026."
What Changed
- No earlier schedule filing is available for direct comparison.
- Current filing was accepted on 28 Apr 2026, 15:52.
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 |
|---|---|---|---|---|---|---|---|
| Vanguard Portfolio Management | 8% | 3,997,102 | 41,399 | 0 | Ashley Grim | Head of Global Fund Administration |