Reporting Manager
SIG Brokerage, LP
Symbol
AMBC
Shares outstanding
46.6M shares
Disclosed Ownership
2.38M shares
Ownership
5.1%
Form type
SCHEDULE 13G
Date filed
8/14/2025, 10:28 AM
Date of event
Jun 30, 2025

Reporting Managers (2)

Name Ownership Shares Owned sole voting power shared voting power Signature Title CIK
SIG Brokerage, LP 5.1% 2.38M 15K 2.38M /s/ Brian Sopinsky Brian Sopinsky, Assistant Secretary
Susquehanna Securities, LLC 5.1% 2.38M 2.36M 2.38M /s/ Brian Sopinsky Brian Sopinsky, Secretary