OSG

SEC source: 0000874501-25-000104 · wk-form4_1751400055.xml · derivative · entry 1

IGLESIAS LISA G · CIK 0001103172 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 67,777

Underlying: Common Stock · 7,053 shares

Expires not disclosed

F1 · derivative.exercise_price: Each restricted stock unit ("RSU") represents a contingent right to receive one share of the common stock of Ambac Financial Group, Inc. (the "Company").

F2 · derivative.exercise_date: RSUs granted on July 1, 2025 shall vest one year later on July 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.

F2 · derivative.expiration_date: RSUs granted on July 1, 2025 shall vest one year later on July 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.

SEC source: 0000874501-25-000102 · wk-form4_1751399973.xml · derivative · entry 1

HAFT IAN DAVID · CIK 0001573787 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 131,921

Underlying: Common Stock · 7,053 shares

Expires not disclosed

F1 · derivative.exercise_price: Each restricted stock unit ("RSU") represents a contingent right to receive one share of the common stock of Ambac Financial Group, Inc. (the "Company").

F2 · derivative.exercise_date: RSU's granted on July 1, 2025 shall vest one year later on July 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.

F2 · derivative.expiration_date: RSU's granted on July 1, 2025 shall vest one year later on July 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.

SEC source: 0000874501-25-000090 · wk-form4_1747258994.xml · nonDerivative · entry 2

PRICE MICHAEL D · CIK 0001241508 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 166,298

SEC source: 0000874501-25-000090 · wk-form4_1747258994.xml · nonDerivative · entry 1

PRICE MICHAEL D · CIK 0001241508 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 166,235

SEC source: 0000874501-25-000088 · wk-form4_1747252807.xml · nonDerivative · entry 1

LeBlanc Claude · CIK 0001380820 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 578,291

SEC source: 0000874501-25-000092 · wk-form4_1747308512.xml · nonDerivative · entry 2

Stein Jeffrey Scott · CIK 0001559518 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 50,000

SEC source: 0000874501-25-000092 · wk-form4_1747308512.xml · nonDerivative · entry 1

Stein Jeffrey Scott · CIK 0001559518 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 45,000

SEC source: 0000874501-25-000074 · wk-form4_1743627444.xml · derivative · entry 1

Stein Jeffrey Scott · CIK 0001559518 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 160,754

Underlying: Common Stock · 5,728 shares

Expires not disclosed

F1 · derivative.exercise_price: Each restricted stock unit ("RSU") represents a contingent right to receive one share of the common stock of Ambac Financial Group, Inc. (the "Company").

F2 · derivative.exercise_date: RSU's granted on April 1, 2025, shall vest one year later on April 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 or upon a "change of control" of the Company.

F2 · derivative.expiration_date: RSU's granted on April 1, 2025, shall vest one year later on April 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 or upon a "change of control" of the Company.

SEC source: 0000874501-25-000072 · wk-form4_1743627373.xml · derivative · entry 1

PRICE MICHAEL D · CIK 0001241508 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 32,126

Underlying: Common Stock · 5,728 shares

Expires not disclosed

F1 · derivative.exercise_price: Each restricted stock unit ("RSU") represents a contingent right to receive one share of the common stock of Ambac Financial Group, Inc. (the "Company").

F2 · derivative.exercise_date: RSUS granted on April 1, 2025, shall vest one year later on April 1, 2026. RSUs that have become vested shall settled 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 or upon a "change of control" of the Company.

F2 · derivative.expiration_date: RSUS granted on April 1, 2025, shall vest one year later on April 1, 2026. RSUs that have become vested shall settled 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 or upon a "change of control" of the Company.

SEC source: 0000874501-25-000070 · wk-form4_1743627290.xml · derivative · entry 1

Matus Kristi Ann · CIK 0001543504 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 32,126

Underlying: Common Stock · 5,728 shares

Expires not disclosed

F1 · derivative.exercise_price: Each restricted stock unit ("RSU") represents a contingent right to receive one share of the common stock of Ambac Financial Group, Inc. (the "Company").

F2 · derivative.exercise_date: RSU's granted on April 1, 2025, shall vest one year later on April 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 or upon a "change of control" of the Company.

F2 · derivative.expiration_date: RSU's granted on April 1, 2025, shall vest one year later on April 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 or upon a "change of control" of the Company.

SEC source: 0000874501-25-000062 · wk-form4_1743626660.xml · derivative · entry 1

HAFT IAN DAVID · CIK 0001573787 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 124,868

Underlying: Common Stock · 5,728 shares

Expires not disclosed

F1 · derivative.exercise_price: Each restricted stock unit ("RSU") represents a contingent right to receive one share of the common stock of Ambac Financial Group, Inc. (the "Company").

F2 · derivative.exercise_date: RSU's granted on April 1, 2025 shall vest one year later on April 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 or upon a "change of control" of the Company.

F2 · derivative.expiration_date: RSU's granted on April 1, 2025 shall vest one year later on April 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 or upon a "change of control" of the Company.

SEC source: 0000874501-25-000068 · wk-form4_1743627218.xml · derivative · entry 1

LAMMTENNANT JOAN M · CIK 0001208239 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 99,937

Underlying: Common Stock · 5,728 shares

Expires not disclosed

F1 · derivative.exercise_price: Each restricted stock unit ("RSU") represents a contingent right to receive one share of the common stock of Ambac Financial Group, Inc. (the "Company").

F2 · derivative.exercise_date: RSU's granted on April 1, 2025, shall vest one year later on April 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 or upon a "change of control" of the Company.

F2 · derivative.expiration_date: RSU's granted on April 1, 2025, shall vest one year later on April 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 or upon a "change of control" of the Company.

SEC source: 0001103172-25-000006 · wk-form4_1743687579.xml · derivative · entry 1

IGLESIAS LISA G · CIK 0001103172 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 60,724

Underlying: Common Stock · 5,728 shares

Expires not disclosed

F1 · derivative.exercise_price: Each restricted stock unit ("RSU") represents a contingent right to receive one share of the common stock of Ambac Financial Group, Inc. (the "Company").

F2 · derivative.exercise_date: RSU's granted on April 1, 2025, shall vest one year later on April 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 or upon a "change of control" of the Company.

F2 · derivative.expiration_date: RSU's granted on April 1, 2025, shall vest one year later on April 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 or upon a "change of control" of the Company.

SEC source: 0000874501-25-000060 · wk-form4_1741984927.xml · derivative · entry 5

Trick David · CIK 0001480597 · Exec VP, CFO & Treasurer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 165,361

Underlying: Common Stock · 5,562 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F6 · derivative.exercise_price: Each DSU represents a contingent right to receive one share of common stock of the Company.

F4 · derivative.exercise_date: Represents the aggregate amount of RSUs that were converted into an equivalent number of deferred share units ("DSUs") pursuant to the Company's Executive Stock Deferral Plan, which was designed to enable participants to elect to defer the settlement and income taxation of RSU and Performance Stock Unit awards in accordance with Section 409A of the Internal Revenue Code of 1986, as amended.

F4 · derivative.expiration_date: Represents the aggregate amount of RSUs that were converted into an equivalent number of deferred share units ("DSUs") pursuant to the Company's Executive Stock Deferral Plan, which was designed to enable participants to elect to defer the settlement and income taxation of RSU and Performance Stock Unit awards in accordance with Section 409A of the Internal Revenue Code of 1986, as amended.

SEC source: 0000874501-25-000060 · wk-form4_1741984927.xml · derivative · entry 3

Trick David · CIK 0001480597 · Exec VP, CFO & Treasurer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 17,601

Underlying: Common Stock · 5,562 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F3 · derivative.exercise_price: Each RSU represents a contingent right to receive one share of the common stock of the Company.

F4 · derivative.exercise_date: Represents the aggregate amount of RSUs that were converted into an equivalent number of deferred share units ("DSUs") pursuant to the Company's Executive Stock Deferral Plan, which was designed to enable participants to elect to defer the settlement and income taxation of RSU and Performance Stock Unit awards in accordance with Section 409A of the Internal Revenue Code of 1986, as amended.

F4 · derivative.expiration_date: Represents the aggregate amount of RSUs that were converted into an equivalent number of deferred share units ("DSUs") pursuant to the Company's Executive Stock Deferral Plan, which was designed to enable participants to elect to defer the settlement and income taxation of RSU and Performance Stock Unit awards in accordance with Section 409A of the Internal Revenue Code of 1986, as amended.

SEC source: 0000874501-25-000060 · wk-form4_1741984927.xml · nonDerivative · entry 2

Trick David · CIK 0001480597 · Exec VP, CFO & Treasurer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 156,349

F2 · shares: Represents the amount of RSUs that were converted into common stock and withheld by the Company to satisfy certain tax withholding obligations.

SEC source: 0000874501-25-000060 · wk-form4_1741984927.xml · nonDerivative · entry 1

Trick David · CIK 0001480597 · Exec VP, CFO & Treasurer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 156,349

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · shares: The reporting person acquired 270 shares of common stock of Ambac Financial Group, Inc. (the "Company") upon the vesting and settlement of a portion of the reporting person's 2022 restrictive stock unit Long Term Incentive Plan ("2022 RSU LTIP") award.

SEC source: 0000874501-25-000058 · wk-form4_1741984822.xml · derivative · entry 5

Smith R Sharon · CIK 0001707461 · Exec VP & Chief Strategy Offr

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 145,135

Underlying: Common Stock · 4,961 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F6 · derivative.exercise_price: Each DSU represents a contingent right to receive one share of common stock of the Company.

F4 · derivative.exercise_date: Represents the aggregate amount of RSUs that were converted into an equivalent number of deferred share units ("DSUs") pursuant to the Company's Executive Stock Deferral Plan, which was designed to enable participants to elect to defer the settlement and income taxation of RSU and Performance Stock Unit awards in accordance with Section 409A of the Internal Revenue Code of 1986, as amended.

F4 · derivative.expiration_date: Represents the aggregate amount of RSUs that were converted into an equivalent number of deferred share units ("DSUs") pursuant to the Company's Executive Stock Deferral Plan, which was designed to enable participants to elect to defer the settlement and income taxation of RSU and Performance Stock Unit awards in accordance with Section 409A of the Internal Revenue Code of 1986, as amended.

SEC source: 0000874501-25-000058 · wk-form4_1741984822.xml · derivative · entry 4

Smith R Sharon · CIK 0001707461 · Exec VP & Chief Strategy Offr

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 15,460

Underlying: Common Stock · 238 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F3 · derivative.exercise_price: Each RSU represents a contingent right to receive one share of the common stock of the Company.

F5 · derivative.exercise_date: Represents the aggregate amount of RSUs that were converted into shares of common stock of the Company upon settlement of a portion of the reporting person's 2024 Long Term Incentive Plan award.

F5 · derivative.expiration_date: Represents the aggregate amount of RSUs that were converted into shares of common stock of the Company upon settlement of a portion of the reporting person's 2024 Long Term Incentive Plan award.

SEC source: 0000874501-25-000058 · wk-form4_1741984822.xml · derivative · entry 3

Smith R Sharon · CIK 0001707461 · Exec VP & Chief Strategy Offr

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 15,698

Underlying: Common Stock · 4,961 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F3 · derivative.exercise_price: Each RSU represents a contingent right to receive one share of the common stock of the Company.

F4 · derivative.exercise_date: Represents the aggregate amount of RSUs that were converted into an equivalent number of deferred share units ("DSUs") pursuant to the Company's Executive Stock Deferral Plan, which was designed to enable participants to elect to defer the settlement and income taxation of RSU and Performance Stock Unit awards in accordance with Section 409A of the Internal Revenue Code of 1986, as amended.

F4 · derivative.expiration_date: Represents the aggregate amount of RSUs that were converted into an equivalent number of deferred share units ("DSUs") pursuant to the Company's Executive Stock Deferral Plan, which was designed to enable participants to elect to defer the settlement and income taxation of RSU and Performance Stock Unit awards in accordance with Section 409A of the Internal Revenue Code of 1986, as amended.

SEC source: 0000874501-25-000058 · wk-form4_1741984822.xml · nonDerivative · entry 2

Smith R Sharon · CIK 0001707461 · Exec VP & Chief Strategy Offr

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 74,707

F2 · shares: Represents the amount of RSUs that were converted into shares of common stock and withheld by the Company to satisfy certain tax withholding obligations.

SEC source: 0000874501-25-000058 · wk-form4_1741984822.xml · nonDerivative · entry 1

Smith R Sharon · CIK 0001707461 · Exec VP & Chief Strategy Offr

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 74,945

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · shares: The reporting person acquired 238 shares of common stock of Ambac Financial Group, Inc. (the "Company") upon the vesting and settlement of a portion of the reporting person's 2024 Restrictive Stock Unit Long Term Incentive Plan ("2024 RSU LTIP") award.

SEC source: 0000874501-25-000056 · wk-form4_1741984731.xml · derivative · entry 5

McGinnis Daniel · CIK 0001900989 · Sr. MD & COO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 29,832

Underlying: Common Stock · 2,584 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F6 · derivative.exercise_price: Each DSU represents a contingent right to receive one share of common stock of the Company.

F4 · derivative.exercise_date: Represents the aggregate amount of RSUs that were converted into an equivalent number of deferred shared units ("DSUs") pursuant to the Company's Executive Stock Deferral Plan, which was designed to enable participants to elect to defer the settlement and income taxation of RSU and Performance Stock Unit awards in accordance with Section 409A of the Internal Revenue Code of 1986, as amended.

F4 · derivative.expiration_date: Represents the aggregate amount of RSUs that were converted into an equivalent number of deferred shared units ("DSUs") pursuant to the Company's Executive Stock Deferral Plan, which was designed to enable participants to elect to defer the settlement and income taxation of RSU and Performance Stock Unit awards in accordance with Section 409A of the Internal Revenue Code of 1986, as amended.

SEC source: 0000874501-25-000056 · wk-form4_1741984731.xml · derivative · entry 4

McGinnis Daniel · CIK 0001900989 · Sr. MD & COO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 7,964

Underlying: Common Stock · 94 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F3 · derivative.exercise_price: Each RSU represents a contingent right to receive one share of common stock of Ambac Financial Group, Inc.

F5 · derivative.exercise_date: Represents the aggregate amount of RSUs that were converted into shares of common stock of Company upon settlement of a portion of the reporting person's 2024 Long Term Incentive Plan award.

F5 · derivative.expiration_date: Represents the aggregate amount of RSUs that were converted into shares of common stock of Company upon settlement of a portion of the reporting person's 2024 Long Term Incentive Plan award.

SEC source: 0000874501-25-000056 · wk-form4_1741984731.xml · derivative · entry 3

McGinnis Daniel · CIK 0001900989 · Sr. MD & COO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 8,058

Underlying: Common Stock · 2,584 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F3 · derivative.exercise_price: Each RSU represents a contingent right to receive one share of common stock of Ambac Financial Group, Inc.

F4 · derivative.exercise_date: Represents the aggregate amount of RSUs that were converted into an equivalent number of deferred shared units ("DSUs") pursuant to the Company's Executive Stock Deferral Plan, which was designed to enable participants to elect to defer the settlement and income taxation of RSU and Performance Stock Unit awards in accordance with Section 409A of the Internal Revenue Code of 1986, as amended.

F4 · derivative.expiration_date: Represents the aggregate amount of RSUs that were converted into an equivalent number of deferred shared units ("DSUs") pursuant to the Company's Executive Stock Deferral Plan, which was designed to enable participants to elect to defer the settlement and income taxation of RSU and Performance Stock Unit awards in accordance with Section 409A of the Internal Revenue Code of 1986, as amended.

SEC source: 0000874501-25-000056 · wk-form4_1741984731.xml · nonDerivative · entry 2

McGinnis Daniel · CIK 0001900989 · Sr. MD & COO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 18,456

F2 · shares: Represents the amount of RSUs that were converted into shares of common stock and withheld by the Company to satisfy certain tax withholding obligations.

SEC source: 0000874501-25-000056 · wk-form4_1741984731.xml · nonDerivative · entry 1

McGinnis Daniel · CIK 0001900989 · Sr. MD & COO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 18,550

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · shares: The reporting person acquired 94 shares of common stock of Ambac Financial Group, Inc. (the "Company") upon the vesting and settlement of a portion of the reporting person's 2024 Restrictive Stock Unit Long Term Incentive Plan ("2024 RSU LTIP") award.

SEC source: 0000874501-25-000052 · wk-form4_1741984457.xml · derivative · entry 3

Ksenak Stephen Michael · CIK 0001527850 · Sr. MD & General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 14,054

Underlying: Common Stock · 4,726 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F3 · derivative.exercise_price: Each RSU represents a contingent right to receive one share of the common stock of the Company.

F1 · derivative.exercise_date: Represents the aggregate amount of restricted stock units ("RSUs") that were converted into shares of common stock of Ambac Financial Group, Inc. (the "Company") upon settlement of a portion of the reporting person's 2024Long Term Incentive Plan award.

F1 · derivative.expiration_date: Represents the aggregate amount of restricted stock units ("RSUs") that were converted into shares of common stock of Ambac Financial Group, Inc. (the "Company") upon settlement of a portion of the reporting person's 2024Long Term Incentive Plan award.

SEC source: 0000874501-25-000052 · wk-form4_1741984457.xml · nonDerivative · entry 2

Ksenak Stephen Michael · CIK 0001527850 · Sr. MD & General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 121,599

F2 · shares: Represents the amount of RSUs that were converted into shares of common stock and withheld by the Company to satisfy certain tax withholding obligations.

SEC source: 0000874501-25-000052 · wk-form4_1741984457.xml · nonDerivative · entry 1

Ksenak Stephen Michael · CIK 0001527850 · Sr. MD & General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 123,302

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · shares: Represents the aggregate amount of restricted stock units ("RSUs") that were converted into shares of common stock of Ambac Financial Group, Inc. (the "Company") upon settlement of a portion of the reporting person's 2024Long Term Incentive Plan award.

SEC source: 0000874501-25-000054 · wk-form4_1741984619.xml · derivative · entry 3

LeBlanc Claude · CIK 0001380820 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 71,456

Underlying: Common Stock · 24,327 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F3 · derivative.exercise_price: Each RSU represents a contingent right to receive one share of the Company's common stock.

F1 · derivative.exercise_date: Represents the aggregate amount of restricted stock units ("RSUs") that were converted into shares of common stock of Ambac Financial Group, Inc. (the "Company") upon settlement of a portion of the reporting person's 2024 Long Term Incentive Plan award.

F1 · derivative.expiration_date: Represents the aggregate amount of restricted stock units ("RSUs") that were converted into shares of common stock of Ambac Financial Group, Inc. (the "Company") upon settlement of a portion of the reporting person's 2024 Long Term Incentive Plan award.

SEC source: 0000874501-25-000054 · wk-form4_1741984619.xml · nonDerivative · entry 2

LeBlanc Claude · CIK 0001380820 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 538,291

F2 · shares: Represents the amount of RSUs that were converted into shares of common stock and withheld by the Company to satisfy certain tax withholding obligations.

SEC source: 0000874501-25-000054 · wk-form4_1741984619.xml · nonDerivative · entry 1

LeBlanc Claude · CIK 0001380820 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 551,743

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · shares: Represents the aggregate amount of restricted stock units ("RSUs") that were converted into shares of common stock of Ambac Financial Group, Inc. (the "Company") upon settlement of a portion of the reporting person's 2024 Long Term Incentive Plan award.

SEC source: 0000874501-25-000050 · wk-form4_1741984353.xml · derivative · entry 3

Eisman Robert Bryan · CIK 0001477761 · Sr. MD & CAO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,604

Underlying: Common Stock · 1,908 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F3 · derivative.exercise_price: Each RSU represents a contingent right to receive one share of the common stock of the Company.

F1 · derivative.exercise_date: Represents the aggregate amount of Restricted Stock Units ("RSUs) that were converted into shares of common stock of Ambac Financial Group, Inc. (the "Company") upon settlement of a portion of the reporting person's 2024 Long Term Incentive Plan award.

F1 · derivative.expiration_date: Represents the aggregate amount of Restricted Stock Units ("RSUs) that were converted into shares of common stock of Ambac Financial Group, Inc. (the "Company") upon settlement of a portion of the reporting person's 2024 Long Term Incentive Plan award.

SEC source: 0000874501-25-000050 · wk-form4_1741984353.xml · nonDerivative · entry 2

Eisman Robert Bryan · CIK 0001477761 · Sr. MD & CAO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 70,108

F2 · shares: Represents the amount of RSUs that were converted into shares of common stock and withheld by the Company to satisfy certain tax withholding obligations.

SEC source: 0000874501-25-000050 · wk-form4_1741984353.xml · nonDerivative · entry 1

Eisman Robert Bryan · CIK 0001477761 · Sr. MD & CAO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 70,795

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · shares: Represents the aggregate amount of Restricted Stock Units ("RSUs) that were converted into shares of common stock of Ambac Financial Group, Inc. (the "Company") upon settlement of a portion of the reporting person's 2024 Long Term Incentive Plan award.

SEC source: 0000874501-25-000048 · wk-form4_1741984224.xml · derivative · entry 5

BARRANCO DAVID · CIK 0001562313 · Senior Managing Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 96,877

Underlying: Common Stock · 5,167 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F6 · derivative.exercise_price: Each DSU represents a contingent right to receive one share of common stock of the Company.

F4 · derivative.exercise_date: Represents the aggregate amount of RSUs that were converted into an equivalent number of deferred share unit ("DSUs") pursuant to the Company's Executive Stock Deferral Plan, which was designed to enable participants to elect to defer the settlement and income taxation of RSU and Performance Stock Unit awards in accordance with Section 409A of the Internal Revenue Code of 1986, as amended.

F4 · derivative.expiration_date: Represents the aggregate amount of RSUs that were converted into an equivalent number of deferred share unit ("DSUs") pursuant to the Company's Executive Stock Deferral Plan, which was designed to enable participants to elect to defer the settlement and income taxation of RSU and Performance Stock Unit awards in accordance with Section 409A of the Internal Revenue Code of 1986, as amended.

SEC source: 0000874501-25-000048 · wk-form4_1741984224.xml · derivative · entry 4

BARRANCO DAVID · CIK 0001562313 · Senior Managing Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 15,928

Underlying: Common Stock · 189 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F3 · derivative.exercise_price: Each RSU represents a contingent right to receive one share of the common stock of the Company.

F5 · derivative.exercise_date: Represents the aggregate amount of RSUs that were converted into shares of common stock of the Company upon settlement of a portion of the reporting person's 2024 Long Term Incentive Plan award.

F5 · derivative.expiration_date: Represents the aggregate amount of RSUs that were converted into shares of common stock of the Company upon settlement of a portion of the reporting person's 2024 Long Term Incentive Plan award.

SEC source: 0000874501-25-000048 · wk-form4_1741984224.xml · derivative · entry 3

BARRANCO DAVID · CIK 0001562313 · Senior Managing Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 16,117

Underlying: Common Stock · 5,167 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F3 · derivative.exercise_price: Each RSU represents a contingent right to receive one share of the common stock of the Company.

F4 · derivative.exercise_date: Represents the aggregate amount of RSUs that were converted into an equivalent number of deferred share unit ("DSUs") pursuant to the Company's Executive Stock Deferral Plan, which was designed to enable participants to elect to defer the settlement and income taxation of RSU and Performance Stock Unit awards in accordance with Section 409A of the Internal Revenue Code of 1986, as amended.

F4 · derivative.expiration_date: Represents the aggregate amount of RSUs that were converted into an equivalent number of deferred share unit ("DSUs") pursuant to the Company's Executive Stock Deferral Plan, which was designed to enable participants to elect to defer the settlement and income taxation of RSU and Performance Stock Unit awards in accordance with Section 409A of the Internal Revenue Code of 1986, as amended.

SEC source: 0000874501-25-000048 · wk-form4_1741984224.xml · nonDerivative · entry 2

BARRANCO DAVID · CIK 0001562313 · Senior Managing Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 128,415

F2 · shares: Represents the amount of RSUs that were converted into shares of common stock and withheld by the Company to satisfy certain tax withholding obligations.

SEC source: 0000874501-25-000048 · wk-form4_1741984224.xml · nonDerivative · entry 1

BARRANCO DAVID · CIK 0001562313 · Senior Managing Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 128,604

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · shares: The reporting person acquired 189 shares of common stock of Ambac Financial Group, Inc. (the "Company") upon the vesting and settlement of a portion of the reporting person's 2024 Restrictive Stock Unit Long Term Incentive Plan ("2024 RSU LTIP") award.

SEC source: 0000874501-25-000060 · wk-form4_1741984927.xml · derivative · entry 4

Trick David · CIK 0001480597 · Exec VP, CFO & Treasurer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 17,334

Underlying: Common Stock · 267 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F3 · derivative.exercise_price: Each RSU represents a contingent right to receive one share of the common stock of the Company.

F5 · derivative.exercise_date: Represents the aggregate amount of RSUs that were converted into shares of common stock of the "Company upon settlement of a portion of the reporting person's 2024 Long Term Incentive Plan award.

F5 · derivative.expiration_date: Represents the aggregate amount of RSUs that were converted into shares of common stock of the "Company upon settlement of a portion of the reporting person's 2024 Long Term Incentive Plan award.

SEC source: 0000874501-25-000046 · wk-form4_1741638569.xml · derivative · entry 3

LeBlanc Claude · CIK 0001380820 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 661,355

Underlying: Common Stock · 274,612 shares

Expires not disclosed

F3 · security: Each deferred share unit ("DSU") represents a contingent right to receive one share of common stock of the Company.

F3 · derivative.exercise_price: Each deferred share unit ("DSU") represents a contingent right to receive one share of common stock of the Company.

F4 · derivative.exercise_date: Represents the aggregate amount of performance stock units ("PSUs") that were converted into an equivalent number of DSUs pursuant to the Company's Executive Stock Deferral Plan, which was designed to enable participants to elect to defer the settlement and income taxation of PSU and restricted stock unit awards in accordance with Section 409A of the Internal Revenue Code of 1986, as amended.

F4 · derivative.expiration_date: Represents the aggregate amount of performance stock units ("PSUs") that were converted into an equivalent number of DSUs pursuant to the Company's Executive Stock Deferral Plan, which was designed to enable participants to elect to defer the settlement and income taxation of PSU and restricted stock unit awards in accordance with Section 409A of the Internal Revenue Code of 1986, as amended.

SEC source: 0000874501-25-000046 · wk-form4_1741638569.xml · nonDerivative · entry 2

LeBlanc Claude · CIK 0001380820 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 527,416

F2 · shares: As part of the vesting and settlement of a portion of the 2022 LTIP award, 10,809 shares of common stock were withheld by the Company to satisfy certain tax withholding obligations.

SEC source: 0000874501-25-000046 · wk-form4_1741638569.xml · nonDerivative · entry 1

LeBlanc Claude · CIK 0001380820 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 538,225

F1 · shares: The reporting person acquired 10,809 shares of common stock of Ambac Financial Group, Inc. (the "Company") upon the simultaneous vesting and settlement of a portion of the reporting person's 2022 Long Term Incentive Plan award, which had a three year performance period and vested on March 6, 2025.

SEC source: 0000874501-25-000044 · wk-form4_1741638480.xml · derivative · entry 3

BARRANCO DAVID · CIK 0001562313 · Senior Managing Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 91,710

Underlying: Common Stock · 45,907 shares

Expires not disclosed

F3 · security: Each DSU represents a contingent right to receive one share of the Company's common stock.

F3 · derivative.exercise_price: Each DSU represents a contingent right to receive one share of the Company's common stock.

F4 · derivative.exercise_date: Represents the aggregate amount of performance stock units ("PSUs") that were converted into an equivalent number of deferred share units ("DSUs") pursuant to the Company's Executive Stock Deferral Plan, which was designed to enable participants to elect to defer the settlement and income taxation of PSU and restricted stock unit awards in accordance with Section 409A of the Internal Revenue Code of 1986, as amended.

F4 · derivative.expiration_date: Represents the aggregate amount of performance stock units ("PSUs") that were converted into an equivalent number of deferred share units ("DSUs") pursuant to the Company's Executive Stock Deferral Plan, which was designed to enable participants to elect to defer the settlement and income taxation of PSU and restricted stock unit awards in accordance with Section 409A of the Internal Revenue Code of 1986, as amended.

SEC source: 0000874501-25-000044 · wk-form4_1741638480.xml · nonDerivative · entry 2

BARRANCO DAVID · CIK 0001562313 · Senior Managing Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 128,415

F2 · shares: As part of the vesting and settlement of a portion of the 2022 LTIP award, 7,379 shares of common stock were withheld by the Company to satisfy certain tax withholding obligations.

SEC source: 0000874501-25-000044 · wk-form4_1741638480.xml · nonDerivative · entry 1

BARRANCO DAVID · CIK 0001562313 · Senior Managing Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 135,794

F1 · shares: The reporting person acquired 17,519 shares of common stock of Ambac Financial Group, Inc. (the "Company") upon the simultaneous vesting and settlement of a portion of the reporting person's 2022 Long Term Incentive Plan award, which had a three year performance period and vested on March 6, 2025.

SEC source: 0000874501-25-000042 · wk-form4_1741638358.xml · derivative · entry 3

McGinnis Daniel · CIK 0001900989 · Sr. MD & COO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 27,248

Underlying: Common Stock · 14,838 shares

Expires not disclosed

F3 · derivative.exercise_price: Represents the aggregate amount of performance stock units ("PSUs") that were converted into an equivalent number of deferred share units ("DSUs") pursuant to the Company's Executive Stock Deferral Plan, which was designed to enable participants to elect to defer the settlement and income taxation of PSUs and Restricted Stock Unit awards in accordance with Section 409A of the Internal Revenue Code of 1986, as amended.

F3 · derivative.exercise_date: Represents the aggregate amount of performance stock units ("PSUs") that were converted into an equivalent number of deferred share units ("DSUs") pursuant to the Company's Executive Stock Deferral Plan, which was designed to enable participants to elect to defer the settlement and income taxation of PSUs and Restricted Stock Unit awards in accordance with Section 409A of the Internal Revenue Code of 1986, as amended.

F3 · derivative.expiration_date: Represents the aggregate amount of performance stock units ("PSUs") that were converted into an equivalent number of deferred share units ("DSUs") pursuant to the Company's Executive Stock Deferral Plan, which was designed to enable participants to elect to defer the settlement and income taxation of PSUs and Restricted Stock Unit awards in accordance with Section 409A of the Internal Revenue Code of 1986, as amended.

SEC source: 0000874501-25-000042 · wk-form4_1741638358.xml · nonDerivative · entry 2

McGinnis Daniel · CIK 0001900989 · Sr. MD & COO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 18,456

F2 · shares: As part of the vesting and settlement of a portion of the 2022 LTIP award, 6,736 shares of common stock were withheld by the Company to satisfy certain tax withholding obligations.