Filing Manager
ACORN BIOVENTURES, L.P.
Reporting Manager
Anders Hove
Symbol
JSPR
Shares outstanding
27,913,938 shares
Disclosed Ownership
1,786,492 shares
Ownership
6.4%
Form type
SCHEDULE 13G
Filing time
02 Dec 2025, 10:23:49 UTC
Date of event
01 Dec 2025

Reporting Managers (5)

Name Ownership Shares Owned sole voting power shared voting power Signature Title CIK
ACORN BIOVENTURES, L.P. 2.7% 750,326 0 750,326 Anders Hove Manager of General Partner
ACORN CAPITAL ADVISORS GP, LLC 2.7% 750,326 0 750,326 Anders Hove Manager
ACORN BIOVENTURES 2, L.P. 3.7% 1,036,166 0 1,036,166 Anders Hove Manager of General Partner
Acorn Capital Advisors GP 2, LLC 3.7% 1,036,166 0 1,036,166 Anders Hove Manager
Anders Hove 6.4% 1,786,492 0 1,786,492 Anders Hove Individually