Reporting Manager
Kayne Anderson Rudnick Investment Management, LLC
Symbol
OS
Shares outstanding
88,742,571 shares
Disclosed Ownership
6,211,980 shares
Ownership
7%
Form type
SCHEDULE 13G/A
Filing time
13 Nov 2025, 16:05:17 UTC
Date of event
30 Sep 2025
Previous filing
14 May 2025

Reporting Managers (3)

Name Ownership Shares Owned sole voting power shared voting power Signature Title CIK
Kayne Anderson Rudnick Investment Management, LLC 7% 6,211,980 1,860,950 4,242,072 /s/Michael Shoemaker Chief Compliance Officer
Virtus Investment Advisers, LLC 4.8% 4,240,709 0 4,240,709 /s/Chetram Persaud Chief Compliance Officer
Virtus Equity Trust on behalf of Virtus Small-Cap Growth Fund 4.7% 4,101,675 0 4,101,675 /s/Daphne Chisolm Vice President, Counsel and Assistant Secretary