Filing Manager
GAGNON SECURITIES LLC
Reporting Manager
Neil Gagnon
Symbol
OSUR
Shares outstanding
71,810,760 shares
Disclosed Ownership
3,590,538 shares
Ownership
5%
Form type
SCHEDULE 13G
Filing time
17 Nov 2025, 16:06:35 UTC
Date of event
11 Nov 2025
Next filing
12 Feb 2026

Reporting Managers (3)

Name Ownership Shares Owned sole voting power shared voting power Signature Title CIK
Gagnon Securities LLC 2.5% 1,765,491 0 1,702,231 /s/ Neil Gagnon Neil Gagnon/Managing Member
Gagnon Advisors, LLC 1.7% 1,207,440 0 1,207,440 /s/ Neil Gagnon Neil Gagnon/Chief Executive Officer
Neil Gagnon 5% 3,590,538 381,594 3,123,419 /s/ Neil Gagnon Neil Gagnon