Quick Takeaways
- KAYNE ANDERSON RUDNICK INVESTMENT MANAGEMENT LLC filed SCHEDULE 13G/A for OneStream Inc Onestream Ord Shs Class A (OS).
- Disclosed ownership: 5.4%.
- Date of event: 31 Dec 2025.
KAYNE ANDERSON RUDNICK INVESTMENT MANAGEMENT LLC - 31 Dec 2025 SCHEDULE 13G/A Report for OneStream Inc Onestream Ord Shs Class A (OS)
- Filing Manager
- KAYNE ANDERSON RUDNICK INVESTMENT MANAGEMENT LLC
- Reporting Manager
- Kayne Anderson Rudnick Investment Management, LLC
- Symbol
- OS
- Shares outstanding
- 90,142,352 shares
- Disclosed Ownership
- 4,867,687 shares
- Ownership
- 5.4%
- Form type
- SCHEDULE 13G/A
- Filing time
- 13 Feb 2026, 16:05:29 UTC
- Date of event
- 31 Dec 2025
- Previous filing
- 13 Nov 2025
- SEC
- View on sec.gov
Quoteable Key Fact
"KAYNE ANDERSON RUDNICK INVESTMENT MANAGEMENT LLC disclosed 5.4% ownership in OneStream Inc Onestream Ord Shs Class A (OS) on 31 Dec 2025."
What Changed
- Previous schedule filing date: 13 Nov 2025.
- Current filing was accepted on 13 Feb 2026, 16:05.
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 |
|---|---|---|---|---|---|---|---|
| Kayne Anderson Rudnick Investment Management, LLC | 5.4% | 4,867,687 | 1,850,809 | 2,924,070 | /s/Michael Shoemaker | Chief Compliance Officer |