Ambac (AMBC) insider: 4,126 RSUs granted to director vesting 2026

Rhea-AI Filing Summary

Ambac Financial Group, Inc. director Jeffrey Scott Stein was granted 4,126 restricted stock units (RSUs) on 10/01/2025. Each RSU converts into one share of common stock and the award is scheduled to vest on 10/01/2026. Vested RSUs will settle into common stock when the reporting person resigns or otherwise leaves the company's Board. The transaction was reported on Form 4 with an execution/filing date of 10/02/2025 and shows 4,126 shares beneficially owned following the grant, held directly by the reporting person.

Positive

• 4,126 RSUs granted to director Jeffrey Scott Stein on 10/01/2025 indicating continued alignment of director compensation with shareholder equity
• RSUs vest on 10/01/2026, providing a clear one‑year vesting schedule

Negative

• None.

Insights

Corporate Governance Expert

Director grant: 4,126 RSUs vesting one year later.

The Form 4 records a standard director equity award: 4,126 restricted stock units granted on 10/01/2025 that vest on 10/01/2026. Such awards are commonly used to align board members’ interests with shareholders by converting to one share per RSU.

The filing notes vested RSUs convert to common stock upon the director’s resignation or cessation of Board service, indicating settlement is tied to departure rather than an immediate delivery schedule.

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
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Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

1. Name and Address of Reporting Person^*

Stein Jeffrey Scott

(Last) (First) (Middle)

AMBAC FINANCIAL GROUP, INC.

ONE WORLD TRADE CENTER, 41ST FLOOR

(Street)

NEW YORK NY 10007

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
AMBAC FINANCIAL GROUP INC [ AMBC ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

3. Date of Earliest Transaction (Month/Day/Year)
10/01/2025

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Restricted Stock Units	(1)	10/01/2025		A		4,126		(2)	(2)	Common Stock	4,126	$0	4,126	D

Explanation of Responses:

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

2. RSU's granted on October 1, 2025 shall vest one year later on October 1, 2026. RSUs that have become vested shall settle and convert into shares of common stock upon the date that the reporting person resigns from, or otherwise ceases to be a member of, the Board of Directors of the Company.

Remarks:

	William J. White, attorney in fact	10/02/2025
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

What did AMBC director Jeffrey Scott Stein receive on 10/01/2025?

He received 4,126 restricted stock units (RSUs) on 10/01/2025.

When do the RSUs granted to the AMBC director vest?

The RSUs vest on 10/01/2026—one year after the grant date.

How do the RSUs convert to AMBC common stock?

Each RSU represents a contingent right to one share of common stock and vested RSUs settle into shares when the reporting person resigns or otherwise ceases Board service.

How many AMBC shares does the reporting person beneficially own after the transaction?

The Form 4 reports 4,126 shares (from the RSU grant) beneficially owned following the transaction.

When was this Form 4 filed and who signed it?

The form shows an execution/filing date of 10/02/2025 and is signed by William J. White, attorney in fact.