Quick Takeaways
- ADVENT INTERNATIONAL, L.P. filed SCHEDULE 13D for Waystar Holding Corp. Common Stock, par value $0.01 per share (WAY).
- Disclosed ownership: 5.8%.
- Date of event: 01 Oct 2025.
ADVENT INTERNATIONAL, L.P. - 01 Oct 2025 SCHEDULE 13D Report for Waystar Holding Corp. Common Stock, par value $0.01 per share (WAY)
- Filing Manager
- ADVENT INTERNATIONAL, L.P.
- Reporting Manager
- ADVENT INTERNATIONAL, L.P.
- Symbol
- WAY
- Shares outstanding
- 190,687,914 shares
- Disclosed Ownership
- 11,059,899 shares
- Ownership
- 5.8%
- Form type
- SCHEDULE 13D
- Filing time
- 03 Oct 2025, 20:36:35 UTC
- Date of event
- 01 Oct 2025
- SEC
- View on sec.gov
Quoteable Key Fact
"ADVENT INTERNATIONAL, L.P. disclosed 5.8% ownership in Waystar Holding Corp. Common Stock, par value $0.01 per share (WAY) on 01 Oct 2025."
What Changed
- No earlier schedule filing is available for direct comparison.
- Current filing was accepted on 03 Oct 2025, 20:36.
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 (3)
| Name | Ownership | Shares Owned | sole voting power | shared voting power | Signature | Title | CIK |
|---|---|---|---|---|---|---|---|
| ADVENT INTERNATIONAL, L.P. | 5.8% | 11,059,899 | 0 | 11,059,899 | /s/ Neil Crawford | Neil Crawford / Vice President of Finance | 0001034196 |
| Advent International GP, LLC | 5.8% | 11,059,899 | 0 | 11,059,899 | /s/ Neil Crawford | Neil Crawford / Vice President of Finance | |
| AIO Holdings L.P. | 5.8% | 11,059,899 | 0 | 11,059,899 | /s/ Neil Crawford | Neil Crawford / Treasurer and Secretary |