Susquehanna Securities, Llc - Sep 30, 2025 SCHEDULE 13G/A Report for Ambac Financial Group, Inc. Common Stock, $0.01 par value per share (AMBC)

Filing Manager: Susquehanna Securities, Llc
Reporting Manager: G1 Execution Services, LLC
Security: Ambac Financial Group, Inc. Common Stock, $0.01 par value per share
Symbol: AMBC
Shares outstanding: 46.2M shares
Disclosed Ownership: 1.02M shares
Ownership: 2.2%
Form type: SCHEDULE 13G/A
Date filed: 11/13/2025, 05:37 PM
Date of event: Sep 30, 2025
Previous filing: Aug 14, 2025
SEC: View on sec.gov

Reporting Managers (3)

Name	Ownership	Shares Owned	sole voting power	shared voting power	Signature	Title
G1 Execution Services, LLC	2.2%	1.02M	5.1K	1.02M	/s/ Brian Sopinsky	Brian Sopinsky, Secretary
SIG Brokerage, LP	2.2%	1.02M	2.5K	1.02M	/s/ Brian Sopinsky	Brian Sopinsky, Assistant Secretary
Susquehanna Securities, LLC	2.2%	1.02M	1.01M	1.02M	/s/ Brian Sopinsky	Brian Sopinsky, Secretary