IGLESIAS LISA G

SEC source: 0001628280-26-064948 · wk-form4_1791231954.xml · derivative · entry 1

IGLESIAS LISA G · CIK 0001103172 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 30,815

Underlying: Common Stock · 8,224 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 Octave Specialty Group, Inc. (the "Company").

F2 · derivative.exercise_date: RSU's granted on October 1, 2026 shall vest one year later on October 1, 2027. RSUs that have become vested shall settle and convert into shares of common stock upon the earlier of the vesting date or the date that the reporting person resigns from, or otherwise ceases to be a member of, the Board of Directors of the Company, unless otherwise deferred upon the election of the reporting person.

F2 · derivative.expiration_date: RSU's granted on October 1, 2026 shall vest one year later on October 1, 2027. RSUs that have become vested shall settle and convert into shares of common stock upon the earlier of the vesting date or the date that the reporting person resigns from, or otherwise ceases to be a member of, the Board of Directors of the Company, unless otherwise deferred upon the election of the reporting person.

SEC source: 0001103172-26-000010 · wk-form4_1789161948.xml · nonDerivative · entry 1

IGLESIAS LISA G · CIK 0001103172 · EVP, General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 25,453

F1 · price: Reflects the weighted average price for multiple sale transactions ranging in price from $94.434 per share to $94.470 per share, inclusive. The reporting person undertakes to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote.

F2 · balance_after: Includes 15,818 restricted stock units and 9,635 shares of common stock. All restricted stock units ("stock-settled RSUs") may be settled, on a 1-for-1 basis, only in shares of common stock. Fractional amounts have been rounded to the nearest whole number.

SEC source: 0001628280-26-047521 · wk-form4_1783458068.xml · derivative · entry 1

IGLESIAS LISA G · CIK 0001103172 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 22,591

Underlying: Common Stock · 6,500 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 Octave Specialty Group, Inc. (the "Company").

F2 · derivative.exercise_date: RSU's granted on July 1, 2026 shall vest one year later on July 1, 2027. RSUs that have become vested shall settle and convert into shares of common stock upon the earlier of the vesting date or 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 July 1, 2026 shall vest one year later on July 1, 2027. RSUs that have become vested shall settle and convert into shares of common stock upon the earlier of the vesting date or 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: 0001628280-26-023247 · wk-form4_1775162278.xml · derivative · entry 1

IGLESIAS LISA G · CIK 0001103172 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 16,091

Underlying: Common Stock · 7,441 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 Octave Specialty Group, Inc. (the "Company").

F2 · derivative.exercise_date: RSU's granted on April 1, 2026 shall vest one year later on April 1, 2027. RSUs that have become vested shall settle and convert into shares of common stock upon the earlier of the vesting date or the date that the reporting person resigns from, or otherwise ceases to be a member of, the Board of Directors of the Company, unless otherwise deferred upon the election of the Reporting person.

F2 · derivative.expiration_date: RSU's granted on April 1, 2026 shall vest one year later on April 1, 2027. RSUs that have become vested shall settle and convert into shares of common stock upon the earlier of the vesting date or the date that the reporting person resigns from, or otherwise ceases to be a member of, the Board of Directors of the Company, unless otherwise deferred upon the election of the Reporting person.

SEC source: 0001103172-26-000008 · wk-form4_1773266239.xml · nonDerivative · entry 1

IGLESIAS LISA G · CIK 0001103172 · EVP, General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 29,453

F1 · balance_after: Includes 15,818 restricted stock units and 13,635 shares of common stock. All restricted stock units ("stock-settled RSUs") may be settled, on a 1-for-1 basis, only in shares of common stock. Fractional amounts have been rounded to the nearest whole number.

SEC source: 0001103172-26-000005 · wk-form4_1772577317.xml · nonDerivative · entry 4

IGLESIAS LISA G · CIK 0001103172 · EVP, General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 32,953

F7 · shares: All are stock-settled RSUs, which vest in three near-equal annual installments beginning on March 1, 2027.

F8 · balance_after: Includes 15,818 stock-settled RSUs and 17,135 shares of common stock. Fractional amounts have been rounded to the nearest whole number.

SEC source: 0001103172-26-000005 · wk-form4_1772577317.xml · nonDerivative · entry 3

IGLESIAS LISA G · CIK 0001103172 · EVP, General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 25,268

F5 · shares: Shares withheld to satisfy tax withholding obligation applicable to the vesting of 2,210 stock-settled RSUs.

F6 · balance_after: Includes 8,133 stock-settled RSUs and 17,135 shares of common stock. Fractional amounts have been rounded to the nearest whole number.

SEC source: 0001103172-26-000005 · wk-form4_1772577317.xml · nonDerivative · entry 2

IGLESIAS LISA G · CIK 0001103172 · EVP, General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 26,086

F3 · shares: Shares withheld to satisfy tax withholding obligation applicable to the vesting of 3,536 stock-settled RSUs.

F4 · balance_after: Includes 10,343 stock-settled RSUs and 15,743 shares of common stock. Fractional amounts have been rounded to the nearest whole number.

SEC source: 0001103172-26-000005 · wk-form4_1772577317.xml · nonDerivative · entry 1

IGLESIAS LISA G · CIK 0001103172 · EVP, General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 27,395

F1 · shares: Shares withheld to satisfy tax withholding obligation applicable to the vesting of 3,362 stock-settled RSUs (as defined in footnote (2) below).

F2 · balance_after: Includes 13,879 restricted stock units and 13,516 shares of common stock. All restricted stock units ("stock-settled RSUs") may be settled, on a 1-for-1 basis, only in shares of common stock. Fractional amounts have been rounded to the nearest whole number.

SEC source: 0001103172-26-000003 · wk-form4_1771458749.xml · nonDerivative · entry 1

IGLESIAS LISA G · CIK 0001103172 · EVP, General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 28,639

F1 · shares: Shares withheld to satisfy tax withholding obligation applicable to the vesting of 6,721 stock success units ("SSUs"), representing the third and final vesting tranche, or approximately one-third, of the SSUs originally granted on August 20, 2020, and the certification of the achievement of the performance metrics for the performance period from January 1, 2021 to December 31, 2025. SSUs could be settled, on a 1-for-1 basis, only in shares of common stock.

F2 · balance_after: Includes 17,241 restricted stock units and 11,398 shares of common stock. All restricted stock units ("stock-settled RSUs") may be settled, on a 1-for-1 basis, only in shares of common stock. Fractional amounts have been rounded to the nearest whole number.

SEC source: 0001628280-26-000519 · wk-form4_1767649683.xml · derivative · entry 1

IGLESIAS LISA G · CIK 0001103172 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 8,650

Underlying: Common Stock · 4,524 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 Octave Specialty Group, Inc. (the "Company").

F2 · derivative.exercise_date: RSU's granted on January 1, 2026 shall vest one year later on January 1, 2027. RSUs that have become vested shall settle and convert into shares of common stock upon the earlier of the vesting date or the date that the reporting person resigns from, or otherwise ceases to be a member of, the Board of Directors of the Company, unless otherwise deferred upon the election of the Reporting person.

F2 · derivative.expiration_date: RSU's granted on January 1, 2026 shall vest one year later on January 1, 2027. RSUs that have become vested shall settle and convert into shares of common stock upon the earlier of the vesting date or the date that the reporting person resigns from, or otherwise ceases to be a member of, the Board of Directors of the Company, unless otherwise deferred upon the election of the Reporting person.

SEC source: 0001628280-25-043677 · wk-form4_1759435458.xml · derivative · entry 1

IGLESIAS LISA G · CIK 0001103172 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4,126

Underlying: Common Stock · 4,126 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 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.

F2 · derivative.expiration_date: 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.

SEC source: 0001628280-25-043251 · wk-form4_1759264071.xml · derivative · entry 2

IGLESIAS LISA G · CIK 0001103172 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 67,777 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.

F2 · 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").

F1 · derivative.exercise_date: 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.

F1 · derivative.expiration_date: 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.

SEC source: 0001628280-25-043251 · wk-form4_1759264071.xml · nonDerivative · entry 1

IGLESIAS LISA G · CIK 0001103172 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 82,327

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 · price: 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.

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: 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: 0000005513-25-000021 · wk-form4_1741128343.xml · nonDerivative · entry 5

IGLESIAS LISA G · CIK 0001103172 · EVP, General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 31,284

F9 · balance_after: Includes 17,241 stock-settled RSUs, 6,721 SSUs, and 7,322 shares of common stock. Fractional amounts have been rounded to the nearest whole number.

SEC source: 0000005513-25-000021 · wk-form4_1741128343.xml · nonDerivative · entry 4

IGLESIAS LISA G · CIK 0001103172 · EVP, General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 38,284

F7 · shares: All are stock-settled RSUs, which vest in three near-equal annual installments beginning on March 1, 2026.

F8 · balance_after: Includes 17,241 stock-settled RSUs, 6,721 SSUs, and 14,322 shares of common stock. Fractional amounts have been rounded to the nearest whole number.

SEC source: 0000005513-25-000021 · wk-form4_1741128343.xml · nonDerivative · entry 3

IGLESIAS LISA G · CIK 0001103172 · EVP, General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 31,585

F5 · shares: Shares withheld to satisfy tax withholding obligation applicable to the vesting of 3,536 stock-settled RSUs.

F6 · balance_after: Includes 10,542 stock-settled RSUs, 6,721 SSUs, and 14,322 shares of common stock. Fractional amounts have been rounded to the nearest whole number.

SEC source: 0000005513-25-000021 · wk-form4_1741128343.xml · nonDerivative · entry 2

IGLESIAS LISA G · CIK 0001103172 · EVP, General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 32,894

F3 · shares: Shares withheld to satisfy tax withholding obligation applicable to the vesting of 3,263 stock-settled RSUs.

F4 · balance_after: Includes 14,078 stock-settled RSUs, 6,721 SSUs, and 12,095 shares of common stock. Fractional amounts have been rounded to the nearest whole number.

SEC source: 0000005513-25-000021 · wk-form4_1741128343.xml · nonDerivative · entry 1

IGLESIAS LISA G · CIK 0001103172 · EVP, General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 34,102

F1 · shares: Shares withheld to satisfy tax withholding obligation applicable to the vesting of 4,696 stock-settled RSUs (as defined in footnote (2) below).

F2 · balance_after: Includes 17,341 restricted stock units, 6,721 stock success units, and 10,040 shares of common stock. All restricted stock units ("stock-settled RSUs") and stock success units ("SSUs") may be settled, on a 1-for-1 basis, only in shares of common stock. Fractional amounts have been rounded to the nearest whole number.

SEC source: 0000874501-25-000004 · wk-form4_1735938166.xml · derivative · entry 1

IGLESIAS LISA G · CIK 0001103172 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 54,996

Underlying: Common Stock · 3,938 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 January 1, 2025 shall vest one year later on January 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: RSUs granted on January 1, 2025 shall vest one year later on January 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: 0000005513-24-000178 · wk-form4_1732315189.xml · nonDerivative · entry 1

IGLESIAS LISA G · CIK 0001103172 · EVP, General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 35,840

F1 · balance_after: Includes 22,037 restricted stock units, 6,721 stock success units, and 7,082 shares of common stock. All restricted stock units ("stock-settled RSUs") and stock success units ("SSUs") may be settled, on a 1-for-1 basis, only in shares of common stock. Fractional amounts have been rounded to the nearest whole number.

SEC source: 0000874501-24-000224 · wk-form4_1727817953.xml · derivative · entry 1

IGLESIAS LISA G · CIK 0001103172 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 51,058

Underlying: Common Stock · 4,497 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 October 1, 2024 shall vest one year later on October 1, 2025. 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: RSUs granted on October 1, 2024 shall vest one year later on October 1, 2025. 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: 0000874501-24-000149 · wk-form4_1719863788.xml · derivative · entry 1

IGLESIAS LISA G · CIK 0001103172 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 46,561

Underlying: Common Stock · 3,699 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, 2024 shall vest one year later on July 1, 2025. 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, 2024 shall vest one year later on July 1, 2025. 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: 0000874501-24-000107 · wk-form4_1712005014.xml · derivative · entry 1

IGLESIAS LISA G · CIK 0001103172 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 42,862

Underlying: Common Stock · 3,299 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, 2024 shall vest one year later on April 1, 2025. 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 April 1, 2024 shall vest one year later on April 1, 2025. 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: 0000005513-24-000049 · wk-form4_1709680782.xml · nonDerivative · entry 5

IGLESIAS LISA G · CIK 0001103172 · EVP, General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 40,840

F9 · price: Reflects the weighted average price for multiple sale transactions ranging in price from $50.00 per share to $50.06 per share, inclusive. The reporting person undertakes to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote.

F10 · balance_after: Includes 22,037 stock-settled RSUs, 6,721 SSUs, and 12,082 shares of common stock. Fractional amounts have been rounded to the nearest whole number.

SEC source: 0000005513-24-000049 · wk-form4_1709680782.xml · nonDerivative · entry 4

IGLESIAS LISA G · CIK 0001103172 · EVP, General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 56,840

F7 · shares: All are stock-settled RSUs, which vest in three near-equal annual installments beginning on March 1, 2025.

F8 · balance_after: Includes 22,037 stock-settled RSUs, 6,721 SSUs, and 28,082 shares of common stock. Fractional amounts have been rounded to the nearest whole number.

SEC source: 0000005513-24-000049 · wk-form4_1709680782.xml · nonDerivative · entry 3

IGLESIAS LISA G · CIK 0001103172 · EVP, General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 46,124

F5 · shares: Shares withheld to satisfy tax withholding obligation applicable to the vesting of 3,263 stock-settled RSUs.

F6 · balance_after: Includes 11,321 stock-settled RSUs, 6,721 SSUs, and 28,082 shares of common stock. Fractional amounts have been rounded to the nearest whole number.

SEC source: 0000005513-24-000049 · wk-form4_1709680782.xml · nonDerivative · entry 2

IGLESIAS LISA G · CIK 0001103172 · EVP, General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 47,332

F3 · shares: Shares withheld to satisfy tax withholding obligation applicable to the vesting of 4,558 stock-settled RSUs.

F4 · balance_after: Includes 14,584 stock-settled RSUs, 6,721 SSUs, and 26,027 shares of common stock. Fractional amounts have been rounded to the nearest whole number.

SEC source: 0000005513-24-000049 · wk-form4_1709680782.xml · nonDerivative · entry 1

IGLESIAS LISA G · CIK 0001103172 · EVP, General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 49,019

F1 · shares: Shares withheld to satisfy tax withholding obligation applicable to the vesting of 4,641 stock-settled RSUs (as defined in footnote (2) below).

F2 · balance_after: Includes 19,142 restricted stock units, 6,721 stock success units, and 23,156 shares of common stock. All restricted stock units ("stock-settled RSUs") and stock success units ("SSUs") may be settled, on a 1-for-1 basis, only in shares of common stock. Fractional amounts have been rounded to the nearest whole number.

SEC source: 0000005513-24-000031 · wk-form4_1708559108.xml · nonDerivative · entry 1

IGLESIAS LISA G · CIK 0001103172 · EVP, General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 50,737

F1 · shares: Shares withheld to satisfy tax withholding obligation applicable to the vesting of 6,524 SSUs (as defined in footnote (2) below), representing the second vesting tranche, or approximately one-third, of the SSUs originally granted on August 20, 2020, and the certification of the achievement of the performance metrics for the performance period from January 1, 2021 to December 31, 2023.

F2 · balance_after: Includes 23,783 restricted stock units, 6,721 stock success units, and 20,233 shares of common stock. All restricted stock units ("stock-settled RSUs") and stock success units ("SSUs") may be settled, on a 1-for-1 basis, only in shares of common stock. Fractional amounts have been rounded to the nearest whole number.

SEC source: 0000874501-24-000004 · wk-form4_1704230439.xml · derivative · entry 1

IGLESIAS LISA G · CIK 0001103172 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 39,563

Underlying: Common Stock · 3,147 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 January 1, 2024 shall vest one year later on January 1, 2025. 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 January 1, 2024 shall vest one year later on January 1, 2025. 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: 0000874501-23-000134 · wk-form4_1696288577.xml · derivative · entry 1

IGLESIAS LISA G · CIK 0001103172 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 36,416

Underlying: Common Stock · 3,934 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 October 2, 2023 shall vest one year later on October 2, 2024. 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 October 2, 2023 shall vest one year later on October 2, 2024. 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: 0001209191-23-041295 · doc4.xml · derivative · entry 1

IGLESIAS LISA G · CIK 0001103172 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 32,482

Underlying: Common Stock · 3,569 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, 2023 shall vest one year later on July 1, 2024. 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, 2023 shall vest one year later on July 1, 2024. 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: 0000874501-23-000067 · wf-form4_168064156889118.xml · derivative · entry 1

IGLESIAS LISA G · CIK 0001103172 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 28,913

Underlying: Common Stock · 3,277 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 3, 2023 shall vest one year later on April 3, 2024. 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 April 3, 2023 shall vest one year later on April 3, 2024. 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: 0000005513-23-000066 · wf-form4_167814210855179.xml · nonDerivative · entry 2

IGLESIAS LISA G · CIK 0001103172 · EVP, General Counsel

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 53,305

F3 · price: Reflects the weighted average price for multiple sale transactions ranging in price from $45.00 per share to $45.45 per share, inclusive.

F4 · balance_after: Includes 23,783 stock-settled RSUs, 13,245 SSUs, and 16,277 shares of common stock. Fractional amounts have been rounded to the nearest whole number.

SEC source: 0000005513-23-000066 · wf-form4_167814210855179.xml · nonDerivative · entry 1

IGLESIAS LISA G · CIK 0001103172 · EVP, General Counsel

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 63,333

F1 · price: Reflects the weighted average price for multiple sale transactions ranging in price from $45.00 per share to $45.08 per share, inclusive. The reporting person undertakes to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnotes (1) and (3) to this Form 4.

F2 · balance_after: Includes 23,783 restricted stock units, 13,245 stock success units, and 26,305 shares of common stock. All restricted stock units ("stock-settled RSUs") and stock success units ("SSUs") may be settled, on a 1-for-1 basis, only in shares of common stock. Fractional amounts have been rounded to the nearest whole number.

SEC source: 0000005513-23-000050 · wf-form4_167788311534932.xml · nonDerivative · entry 4

IGLESIAS LISA G · CIK 0001103172 · EVP, General Counsel

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 78,305

F7 · shares: All are stock-settled RSUs, which vest in three equal annual installments beginning on March 1, 2024.

F8 · balance_after: Includes 23,783 stock-settled RSUs, 13,245 SSUs, and 41,277 shares of common stock. Fractional amounts have been rounded to the nearest whole number.

SEC source: 0000005513-23-000050 · wf-form4_167788311534932.xml · nonDerivative · entry 3

IGLESIAS LISA G · CIK 0001103172 · EVP, General Counsel

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 68,417

F5 · shares: Shares withheld to satisfy tax withholding obligation applicable to the vesting of 4,557 stock-settled RSUs.

F6 · balance_after: Includes 13,895 stock-settled RSUs, 13,245 SSUs, and 41,277 shares of common stock. Fractional amounts have been rounded to the nearest whole number.

SEC source: 0000005513-23-000050 · wf-form4_167788311534932.xml · nonDerivative · entry 2

IGLESIAS LISA G · CIK 0001103172 · EVP, General Counsel

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 70,211

F3 · shares: Shares withheld to satisfy tax withholding obligation applicable to the vesting of 4,504 stock-settled RSUs.

F4 · balance_after: Includes 18,452 stock-settled RSUs, 13,245 SSUs, and 38,514 shares of common stock. Fractional amounts have been rounded to the nearest whole number.

SEC source: 0000005513-23-000050 · wf-form4_167788311534932.xml · nonDerivative · entry 1

IGLESIAS LISA G · CIK 0001103172 · EVP, General Counsel

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 71,984

F1 · shares: Shares withheld to satisfy tax withholding obligation applicable to the vesting of 5,416 stock-settled RSUs (as defined in footnote (2) below).

F2 · balance_after: Includes 22,956 restricted stock units, 13,245 stock success units, and 35,783 shares of common stock. All restricted stock units ("stock-settled RSUs") and stock success units ("SSUs") may be settled, on a 1-for-1 basis, only in shares of common stock. Fractional amounts have been rounded to the nearest whole number.

SEC source: 0000005513-23-000020 · wf-form4_167710855583442.xml · nonDerivative · entry 2

IGLESIAS LISA G · CIK 0001103172 · EVP, General Counsel

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 74,116

F3 · shares: Shares withheld to satisfy tax withholding obligation applicable to the vesting of the earned 2020 PSUs.

F4 · balance_after: Includes 28,372 stock-settled RSUs, 13,245 SSUs, and 32,499 shares of common stock. Fractional amounts have been rounded to the nearest whole number.

SEC source: 0000005513-23-000020 · wf-form4_167710855583442.xml · nonDerivative · entry 1

IGLESIAS LISA G · CIK 0001103172 · EVP, General Counsel

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 85,482

F1 · shares: Represents shares of common stock earned from a target number of performance share units awarded on March 1, 2020 ("2020 PSUs"). The shares were earned upon the vesting of the 2020 PSUs and the certification of the levels of achievement of the performance metrics measured over the three-year performance period ended December 31, 2022.

F2 · balance_after: Includes 28,372 restricted stock units, 13,245 stock success units, and 43,865 shares of common stock. All restricted stock units ("stock-settled RSUs") and stock success units ("SSUs") may be settled, on a 1-for-1 basis, only in shares of common stock. Fractional amounts have been rounded to the nearest whole number.

SEC source: 0000874501-23-000013 · wf-form4_167286765214388.xml · derivative · entry 1

IGLESIAS LISA G · CIK 0001103172 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 25,636

Underlying: Common Stock · 3,049 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 January 3, 2023 shall vest one year later on January 3, 2024. 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 January 3, 2023 shall vest one year later on January 3, 2024. 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: 0000874501-22-000137 · wf-form4_166482949942747.xml · derivative · entry 1

IGLESIAS LISA G · CIK 0001103172 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 22,587

Underlying: Common Stock · 3,567 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 October 3, 2022 shall vest one year later on October 3, 2023. 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 October 3, 2022 shall vest one year later on October 3, 2023. 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: 0000005513-22-000146 · wf-form4_166155073711259.xml · nonDerivative · entry 1

IGLESIAS LISA G · CIK 0001103172 · EVP, General Counsel

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 56,814

F1 · balance_after: Includes 28,372 restricted stock units ("stock-settled RSUs"), 13,245 stock success units ("SSUs"), and 15,197 shares of common stock. All stock-settled RSUs and SSUs may be settled, on a 1-for-1 basis, only in shares of common stock. Fractional amounts have been rounded to the nearest whole number.

SEC source: 0000874501-22-000117 · wf-form4_165705931656492.xml · derivative · entry 1

IGLESIAS LISA G · CIK 0001103172 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 19,020

Underlying: Common Stock · 4,538 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, 2022 shall vest one year later on July 1, 2023. 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, 2022 shall vest one year later on July 1, 2023. 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: 0000874501-22-000105 · wf-form4_165269538526524.xml · nonDerivative · entry 1

IGLESIAS LISA G · CIK 0001103172 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 14,550

SEC source: 0000005513-22-000072 · wf-form4_165049237098900.xml · nonDerivative · entry 1

IGLESIAS LISA G · CIK 0001103172 · EVP, General Counsel

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 76,814

F1 · kind: The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 15, 2022.

F2 · balance_after: Includes 28,372 restricted stock units ("stock-settled RSUs"), 13,245 stock success units ("SSUs"), and 35,197 shares of common stock. All stock-settled RSUs and SSUs may be settled, on a 1-for-1 basis, only in shares of common stock. Fractional amounts have been rounded to the nearest whole number.