[Form 4] Ambac Financial Group, Inc. Insider Trading Activity

Rhea-AI Filing Summary

LeBlanc Claude, serving as Chief Executive Officer and a Director of Ambac Financial Group, Inc. (AMBC), reported a purchase of 25,000 shares of AMBC common stock on 08/11/2025 at a price of $7.03 per share. After the transaction the filing shows 603,291 shares beneficially owned directly. The disclosure was submitted on a Form 4 and signed by an attorney-in-fact.

Positive

• Insider purchase: Reporting person acquired 25,000 shares at $7.03 on 08/11/2025
• Senior insider: The reporting person is listed as both Chief Executive Officer and a Director

Negative

• None.

Insights

Financial Analyst

TL;DR Insider purchase of 25,000 AMBC shares by the CEO signals alignment but is not clearly material to valuation.

The Form 4 documents a direct purchase of 25,000 shares at $7.03, bringing direct beneficial ownership to 603,291 shares. This is a routine Section 16 disclosure; while insider buying can be viewed positively, the transaction size relative to total outstanding shares is not provided here, so its market impact is uncertain.

Corporate Governance Expert

TL;DR CEO and Director reporting a purchase is a governance-positive action but the filing contains routine detail only.

The report identifies the reporting person as both a Director and the Chief Executive Officer and shows the acquisition was reported on a single-person Form 4. The filing includes an attorney-in-fact signature, indicating proper procedural handling. There are no disclosures here of derivative activity or planned trading arrangements.

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
Estimated average burden
hours per response:			0.5

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

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

LeBlanc Claude

(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
X	Officer (give title below)		Other (specify below)
	Chief Executive Officer

3. Date of Earliest Transaction (Month/Day/Year)
08/11/2025

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
Common Stock	08/11/2025		P		25,000	A	$7.03	603,291	D

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

Explanation of Responses:

Remarks:

	William White, attorney-in-fact	08/11/2025
	** 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 transaction is disclosed in the AMBC Form 4?

The Form 4 reports a purchase of 25,000 shares of AMBC common stock at $7.03 per share on 08/11/2025.

Who is the reporting person on this AMBC Form 4?

The reporting person is LeBlanc Claude, identified as both Chief Executive Officer and a Director of Ambac Financial Group, Inc.

How many AMBC shares are owned after the reported transaction?

The filing shows 603,291 shares beneficially owned directly following the reported transaction.

Was the Form 4 filed by multiple reporting persons?

No. The form indicates it was filed by one reporting person.

Who signed the Form 4 filing for AMBC?

The filing shows a signature by William White, attorney-in-fact dated 08/11/2025.