Reporting Manager
Kingdon Capital Management, L.L.C.
Symbol
JSPR
Shares outstanding
28.2M shares
Disclosed Ownership
1.32M shares
Ownership
4.7%
Form type
SCHEDULE 13G/A
Date filed
11/12/2025, 01:04 PM
Date of event
Sep 30, 2025
Previous filing
Jul 11, 2025

Reporting Managers (2)

Name Ownership Shares Owned sole voting power shared voting power Signature Title CIK
Kingdon Capital Management, L.L.C. 4.7% 1.32M 0 1.32M By: /s/ Richard Weinstein Richard Weinstein / Chief Operating Officer & General Counsel
Mark Kingdon 4.7% 1.32M 0 1.32M By: /s/ Mark Kingdon Mark Kingdon