Jeffrey Scott Stein - 29 Sep 2025 Form 4 Insider Report for AMBAC FINANCIAL GROUP INC (AMBC)

Reporting relationship: Director
Issuer ticker: AMBC
Reported as of: 29 Sep 2025
Net transaction value: $0
SEC form: 4
Accepted by SEC: 30 Sep 2025, 16:22:05 UTC
Prior SEC filing: 01 Oct 2025
Next SEC filing: 02 Oct 2025
Source filing: View source filing
Reporting owner signature: William J. White, attorney in fact

Key filing fact

Jeffrey Scott Stein filed Form 4 for AMBAC FINANCIAL GROUP INC (AMBC) on 30 Sep 2025.

Key facts

This page summarizes Jeffrey Scott Stein's Form 4 filing for AMBAC FINANCIAL GROUP INC (AMBC).
2 reported transactions and 1 derivative row are listed below.
Accepted by SEC: 30 Sep 2025, 16:22.

Change

Previous filing in this sequence was filed on 01 Oct 2025.
Current net transaction value: $0.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001559518 Primary reporting owner

Stein Jeffrey Scott

Relationship: Director
Address: AMBAC FINANCIAL GROUP, INC., ONE WORLD TRADE CENTER, 41ST FLOOR, NEW YORK
Signature: William J. White, attorney in fact
Signature date: 30 Sep 2025

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

AMBC transaction

Common Stock, par value $0.01 per share

Conversion of derivative security

Transaction value: $0
Shares: +167,807
Change %: +336%
Price: $0.000000
Shares after: 217,807
Date: 29 Sep 2025
Ownership: Direct
Footnotes: F1

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

AMBC transaction Derivative

Restricted Stock Units

Conversion of derivative security

Transaction value: $0
Shares: -167,807
Change %: -100%
Price: $0.000000
Shares after: 0
Date: 29 Sep 2025
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 167,807
Exercise price
Footnotes: F1, F2

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 2 footnotes

Footnote F1

Upon the closing of the sale of Ambac Assurance Corporation to an entity owned by funds managed by Oaktree Capital Management, L.P., a change of control was triggered causing the Director's Restricted Stock Units to vest and settle.

Footnote F2

Each restricted stock unit ("RSU") represents a contingent right to receive one share of the common stock of Ambac Financial Group, Inc. (the "Company").