Kayne Anderson Rudnick Investment Management Llc - Sep 30, 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
Security
OneStream Inc Onestream Ord Shs Class A
Symbol
OS
Shares outstanding
88.7M shares
Disclosed Ownership
6.21M shares
Ownership
7%
Form type
SCHEDULE 13G/A
Date filed
11/13/2025, 04:05 PM
Date of event
Sep 30, 2025
Previous filing
May 14, 2025
SEC
View on sec.gov

Reporting Managers (3)

Name Ownership Shares Owned sole voting power shared voting power Signature Title CIK
Kayne Anderson Rudnick Investment Management, LLC 7% 6.21M 1.86M 4.24M /s/Michael Shoemaker Chief Compliance Officer
Virtus Investment Advisers, LLC 4.8% 4.24M 0 4.24M /s/Chetram Persaud Chief Compliance Officer
Virtus Equity Trust on behalf of Virtus Small-Cap Growth Fund 4.7% 4.1M 0 4.1M /s/Daphne Chisolm Vice President, Counsel and Assistant Secretary