Filing Manager
GAGNON SECURITIES LLC
Reporting Manager
Neil Gagnon
Symbol
OSUR
Shares outstanding
71.8M shares
Disclosed Ownership
3.59M shares
Ownership
5%
Form type
SCHEDULE 13G
Filing time
17 Nov 2025, 16:06:35 UTC
Date of event
11 Nov 2025

Reporting Managers (3)

Name Ownership Shares Owned sole voting power shared voting power Signature Title CIK
Gagnon Securities LLC 2.5% 1.77M 0 1.7M /s/ Neil Gagnon Neil Gagnon/Managing Member
Gagnon Advisors, LLC 1.7% 1.21M 0 1.21M /s/ Neil Gagnon Neil Gagnon/Chief Executive Officer
Neil Gagnon 5% 3.59M 382K 3.12M /s/ Neil Gagnon Neil Gagnon