OSG

SEC source: 0000874501-18-000044 · wf-form4_152037716321279.xml · derivative · entry 4

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 7,228

Underlying: Common Stock · 4,871 shares

Expires not disclosed

F5 · derivative.exercise_price: Each DSU represents a contingent right to receive one share of the Company's common stock.

F6 · derivative.exercise_date: On March 2, 2018, there were 4,871 DSUs granted as part of the 2018 Short Term Incentive Plan. The DSUs shall vest immediately and shall settle and convert into shares of common stock as follows: 50% of the DSUs shall settle and convert into shares of common stock on March 2, 2019, and the remaining 50% of the DSUs shall settle and convert into shares of common stock on March 2, 2020; provided however, that if the reporting person's employment with the Company is terminated for any reason, all of the DSUs will settle and convert into shares of common stock immediately. Notwithstanding the foregoing, a number of vested DSUs sufficient to satisfy certain tax withholding obligations imposed upon the Company may be converted into shares of common stock and withheld by the Company to satisfy such tax withholding obligations.

F6 · derivative.expiration_date: On March 2, 2018, there were 4,871 DSUs granted as part of the 2018 Short Term Incentive Plan. The DSUs shall vest immediately and shall settle and convert into shares of common stock as follows: 50% of the DSUs shall settle and convert into shares of common stock on March 2, 2019, and the remaining 50% of the DSUs shall settle and convert into shares of common stock on March 2, 2020; provided however, that if the reporting person's employment with the Company is terminated for any reason, all of the DSUs will settle and convert into shares of common stock immediately. Notwithstanding the foregoing, a number of vested DSUs sufficient to satisfy certain tax withholding obligations imposed upon the Company may be converted into shares of common stock and withheld by the Company to satisfy such tax withholding obligations.

SEC source: 0000874501-18-000044 · wf-form4_152037716321279.xml · derivative · entry 3

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 5,523

Underlying: Common Stock · 5,523 shares

Expires not disclosed

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

F4 · derivative.exercise_date: On March 2, 2018 the reporting person received a grant of 5,523 RSUs as part of their 2018 Long Term Incentive Plan award. The RSUs will vest in three equal annual installments on each of March 2, 2019, March 2, 2020, and March 2, 2021.

F4 · derivative.expiration_date: On March 2, 2018 the reporting person received a grant of 5,523 RSUs as part of their 2018 Long Term Incentive Plan award. The RSUs will vest in three equal annual installments on each of March 2, 2019, March 2, 2020, and March 2, 2021.

SEC source: 0000874501-18-000044 · wf-form4_152037716321279.xml · nonDerivative · entry 2

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 10,013

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

SEC source: 0000874501-18-000044 · wf-form4_152037716321279.xml · nonDerivative · entry 1

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 10,744

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 deferred stock units ("DSUs") 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 2016 and 2017 Short Term Incentive award.

SEC source: 0000874501-18-000043 · wf-form4_152037711370575.xml · derivative · entry 5

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 12,210

Underlying: Common Stock · 3,612 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.

F5 · derivative.exercise_price: Each DSU represents a contingent right to receive one share of the Company's common stock.

F1 · derivative.exercise_date: Represents the aggregate amount of deferred share units ("DSUs") 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 2016 and 2017 Short Term Incentive award.

F1 · derivative.expiration_date: Represents the aggregate amount of deferred share units ("DSUs") 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 2016 and 2017 Short Term Incentive award.

SEC source: 0000874501-18-000043 · wf-form4_152037711370575.xml · derivative · entry 4

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 15,822

Underlying: Common Stock · 9,394 shares

Expires not disclosed

F5 · derivative.exercise_price: Each DSU represents a contingent right to receive one share of the Company's common stock.

F6 · derivative.exercise_date: On March 2, 2018, there were 9,394 DSUs granted as part of the 2018 Short Term Incentive Plan. The DSUs shall vest immediately and shall settle and convert into shares of common stock as follows: 50% of the DSUs shall settle and convert into shares of common stock on March 2, 2019, and the remaining 50% of the DSUs shall settle and convert into shares of common stock on March 2, 2020; provided however, that if the reporting person's employment with the Company is terminated for any reason, all of the DSUs will settle and convert into shares of common stock immediately. Notwithstanding the foregoing, a number of vested DSUs sufficient to satisfy certain tax withholding obligations imposed upon the Company may be converted into shares of common stock and withheld by the Company to satisfy such tax withholding obligations.

F6 · derivative.expiration_date: On March 2, 2018, there were 9,394 DSUs granted as part of the 2018 Short Term Incentive Plan. The DSUs shall vest immediately and shall settle and convert into shares of common stock as follows: 50% of the DSUs shall settle and convert into shares of common stock on March 2, 2019, and the remaining 50% of the DSUs shall settle and convert into shares of common stock on March 2, 2020; provided however, that if the reporting person's employment with the Company is terminated for any reason, all of the DSUs will settle and convert into shares of common stock immediately. Notwithstanding the foregoing, a number of vested DSUs sufficient to satisfy certain tax withholding obligations imposed upon the Company may be converted into shares of common stock and withheld by the Company to satisfy such tax withholding obligations.

SEC source: 0000874501-18-000043 · wf-form4_152037711370575.xml · derivative · entry 3

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 13,132

Underlying: Common Stock · 8,836 shares

Expires not disclosed

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

F4 · derivative.exercise_date: On March 2, 2018 the reporting person received a grant of 8,836 RSUs as part of their 2018 Long Term Incentive Plan award. The RSUs will vest in three equal annual installments commencing March 2, 2019, March 2, 2020, and March 2, 2021.

F4 · derivative.expiration_date: On March 2, 2018 the reporting person received a grant of 8,836 RSUs as part of their 2018 Long Term Incentive Plan award. The RSUs will vest in three equal annual installments commencing March 2, 2019, March 2, 2020, and March 2, 2021.

SEC source: 0000874501-18-000043 · wf-form4_152037711370575.xml · nonDerivative · entry 2

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 30,725

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

SEC source: 0000874501-18-000043 · wf-form4_152037711370575.xml · nonDerivative · entry 1

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 32,557

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 deferred share units ("DSUs") 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 2016 and 2017 Short Term Incentive award.

SEC source: 0000874501-18-000042 · wf-form4_152037705121910.xml · derivative · entry 5

BARRANCO DAVID · CIK 0001562313 · Senior Managing Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 6,808

Underlying: Common Stock · 1,589 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.

F5 · derivative.exercise_price: Each DSU represents a contingent right to receive one share of the Company's common stock.

F1 · derivative.exercise_date: Represents the aggregate amount of Deferred Share Units ("DSUs") 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 2016 and 2017 Short Term Incentive award.

F1 · derivative.expiration_date: Represents the aggregate amount of Deferred Share Units ("DSUs") 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 2016 and 2017 Short Term Incentive award.

SEC source: 0000874501-18-000042 · wf-form4_152037705121910.xml · derivative · entry 4

BARRANCO DAVID · CIK 0001562313 · Senior Managing Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 8,397

Underlying: Common Stock · 5,700 shares

Expires not disclosed

F5 · derivative.exercise_price: Each DSU represents a contingent right to receive one share of the Company's common stock.

F6 · derivative.exercise_date: On March 2, 2018, there were 5,700 DSUs granted as part of the 2018 Short Term Incentive Plan. The DSUs shall vest immediately and shall settle and convert into shares of common stock as follows: 50% of the DSUs shall settle and convert into shares of common stock on March 2, 2019, and the remaining 50% of the DSUs shall settle and convert into shares of common stock on March 2, 2020; provided however, that if the reporting person's employment with the Company is terminated for any reason, all of the DSUs will settle and convert into shares of common stock immediately. Notwithstanding the foregoing, a number of vested DSUs sufficient to satisfy certain tax withholding obligations imposed upon the Company may be converted into shares of common stock and withheld by the Company to satisfy such tax withholding obligations.

F6 · derivative.expiration_date: On March 2, 2018, there were 5,700 DSUs granted as part of the 2018 Short Term Incentive Plan. The DSUs shall vest immediately and shall settle and convert into shares of common stock as follows: 50% of the DSUs shall settle and convert into shares of common stock on March 2, 2019, and the remaining 50% of the DSUs shall settle and convert into shares of common stock on March 2, 2020; provided however, that if the reporting person's employment with the Company is terminated for any reason, all of the DSUs will settle and convert into shares of common stock immediately. Notwithstanding the foregoing, a number of vested DSUs sufficient to satisfy certain tax withholding obligations imposed upon the Company may be converted into shares of common stock and withheld by the Company to satisfy such tax withholding obligations.

SEC source: 0000874501-18-000042 · wf-form4_152037705121910.xml · derivative · entry 3

BARRANCO DAVID · CIK 0001562313 · Senior Managing Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 6,627

Underlying: Common Stock · 6,627 shares

Expires not disclosed

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

F4 · derivative.exercise_date: On March 2, 2018 the reporting person received a grant of 6,627 RSUs as part of their 2018 Long Term Incentive Plan award. The RSUs will vest in three equal annual installments on each of March 2, 2019, March 2, 2020, and March 2, 2021.

F4 · derivative.expiration_date: On March 2, 2018 the reporting person received a grant of 6,627 RSUs as part of their 2018 Long Term Incentive Plan award. The RSUs will vest in three equal annual installments on each of March 2, 2019, March 2, 2020, and March 2, 2021.

SEC source: 0000874501-18-000042 · wf-form4_152037705121910.xml · nonDerivative · entry 2

BARRANCO DAVID · CIK 0001562313 · Senior Managing Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 5,066

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

SEC source: 0000874501-18-000042 · wf-form4_152037705121910.xml · nonDerivative · entry 1

BARRANCO DAVID · CIK 0001562313 · Senior Managing Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 5,908

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 Deferred Share Units ("DSUs") 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 2016 and 2017 Short Term Incentive award.

SEC source: 0000874501-18-000041 · wf-form4_152037700686297.xml · derivative · entry 5

Smith R Sharon · CIK 0001707461 · Senior Managing Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 15,687

Underlying: Common Stock · 915 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.

F4 · derivative.exercise_price: Each DSU represents a contingent right to receive one share of the Company's common stock.

F1 · derivative.exercise_date: On March 2, 2018, 915 deferred share units ("DSUs") vested and were converted into shares of common stock and withheld by Ambac Financial Group, Inc. (the "Company") to satisfy certain tax withholding obligations.

F1 · derivative.expiration_date: On March 2, 2018, 915 deferred share units ("DSUs") vested and were converted into shares of common stock and withheld by Ambac Financial Group, Inc. (the "Company") to satisfy certain tax withholding obligations.

SEC source: 0000874501-18-000041 · wf-form4_152037700686297.xml · derivative · entry 4

Smith R Sharon · CIK 0001707461 · Senior Managing Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 16,602

Underlying: Common Stock · 16,602 shares

Expires not disclosed

F4 · derivative.exercise_price: Each DSU represents a contingent right to receive one share of the Company's common stock.

F5 · derivative.exercise_date: On March 2, 2018, there were 16,602 DSUs granted as part of the 2018 Short Term Incentive Plan. The DSUs shall vest immediately and shall settle and convert into shares of common stock as follows: 50% of the DSUs shall settle and convert into shares of common stock on March 2, 2019, and the remaining 50% of the DSUs shall settle and convert into shares of common stock on March 2, 2020; provided however, that if the reporting person's employment with the Company is terminated for any reason, all of the DSUs will settle and convert into shares of common stock immediately. Notwithstanding the foregoing, a number of vested DSUs sufficient to satisfy certain tax withholding obligations imposed upon the Company may be converted into shares of common stock and withheld by the Company to satisfy such tax withholding obligations.

F5 · derivative.expiration_date: On March 2, 2018, there were 16,602 DSUs granted as part of the 2018 Short Term Incentive Plan. The DSUs shall vest immediately and shall settle and convert into shares of common stock as follows: 50% of the DSUs shall settle and convert into shares of common stock on March 2, 2019, and the remaining 50% of the DSUs shall settle and convert into shares of common stock on March 2, 2020; provided however, that if the reporting person's employment with the Company is terminated for any reason, all of the DSUs will settle and convert into shares of common stock immediately. Notwithstanding the foregoing, a number of vested DSUs sufficient to satisfy certain tax withholding obligations imposed upon the Company may be converted into shares of common stock and withheld by the Company to satisfy such tax withholding obligations.

SEC source: 0000874501-18-000041 · wf-form4_152037700686297.xml · derivative · entry 3

Smith R Sharon · CIK 0001707461 · Senior Managing Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 6,627

Underlying: Common Stock · 6,627 shares

Expires not disclosed

F2 · derivative.exercise_price: Each restricted stock unit ("RSUs") represents a contingent right to receive one share of common stock of the Company.

F3 · derivative.exercise_date: On March 2, 2018 the reporting person received a grant of 6,627 RSUs as part of their 2018 Long Term Incentive Plan award. The RSUs will vest in three equal annual installments on each of March 2, 2019, March 2, 2020, and March 2, 2021.

F3 · derivative.expiration_date: On March 2, 2018 the reporting person received a grant of 6,627 RSUs as part of their 2018 Long Term Incentive Plan award. The RSUs will vest in three equal annual installments on each of March 2, 2019, March 2, 2020, and March 2, 2021.

SEC source: 0000874501-18-000041 · wf-form4_152037700686297.xml · nonDerivative · entry 2

Smith R Sharon · CIK 0001707461 · Senior Managing Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

F1 · shares: On March 2, 2018, 915 deferred share units ("DSUs") vested and were converted into shares of common stock and withheld by Ambac Financial Group, Inc. (the "Company") to satisfy certain tax withholding obligations.

SEC source: 0000874501-18-000041 · wf-form4_152037700686297.xml · nonDerivative · entry 1

Smith R Sharon · CIK 0001707461 · Senior Managing Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 915

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: On March 2, 2018, 915 deferred share units ("DSUs") vested and were converted into shares of common stock and withheld by Ambac Financial Group, Inc. (the "Company") to satisfy certain tax withholding obligations.

SEC source: 0000874501-18-000040 · wf-form4_152037695815412.xml · derivative · entry 5

REILLY MICHAEL FRANCIS · CIK 0001562285 · Senior Managing Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 5,395

Underlying: Common Stock · 1,390 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.

F5 · derivative.exercise_price: Each DSU represents a contingent right to receive one share of the Company's common stock.

F1 · derivative.exercise_date: Represents the aggregate amount of deferred stock units ("DSUs") 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 2016 and 2017 Short Term Incentive award.

F1 · derivative.expiration_date: Represents the aggregate amount of deferred stock units ("DSUs") 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 2016 and 2017 Short Term Incentive award.

SEC source: 0000874501-18-000040 · wf-form4_152037695815412.xml · derivative · entry 4

REILLY MICHAEL FRANCIS · CIK 0001562285 · Senior Managing Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 6,785

Underlying: Common Stock · 4,374 shares

Expires not disclosed

F5 · derivative.exercise_price: Each DSU represents a contingent right to receive one share of the Company's common stock.

F6 · derivative.exercise_date: On March 2, 2018, there were 4,374 DSUs granted as part of the 2018 Short Term Incentive Plan. The DSUs shall vest immediately and shall settle and convert into shares of common stock as follows: 50% of the DSUs shall settle and convert into shares of common stock on March 2, 2019, and the remaining 50% of the DSUs shall settle and convert into shares of common stock on March 2, 2020; provided however, that if the reporting person's employment with the Company is terminated for any reason, all of the DSUs will settle and convert into shares of common stock immediately. Notwithstanding the foregoing, a number of vested DSUs sufficient to satisfy certain tax withholding obligations imposed upon the Company may be converted into shares of common stock and withheld by the Company to satisfy such tax withholding obligations.

F6 · derivative.expiration_date: On March 2, 2018, there were 4,374 DSUs granted as part of the 2018 Short Term Incentive Plan. The DSUs shall vest immediately and shall settle and convert into shares of common stock as follows: 50% of the DSUs shall settle and convert into shares of common stock on March 2, 2019, and the remaining 50% of the DSUs shall settle and convert into shares of common stock on March 2, 2020; provided however, that if the reporting person's employment with the Company is terminated for any reason, all of the DSUs will settle and convert into shares of common stock immediately. Notwithstanding the foregoing, a number of vested DSUs sufficient to satisfy certain tax withholding obligations imposed upon the Company may be converted into shares of common stock and withheld by the Company to satisfy such tax withholding obligations.

SEC source: 0000874501-18-000040 · wf-form4_152037695815412.xml · derivative · entry 3

REILLY MICHAEL FRANCIS · CIK 0001562285 · Senior Managing Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 6,075

Underlying: Common Stock · 6,075 shares

Expires not disclosed

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

F4 · derivative.exercise_date: On March 2, 2018 the reporting person received a grant of 6,075 RSUs as part of their 2018 Long Term Incentive Plan award. The RSUs will vest in three equal annual installments on each of March 2, 2019, March 2, 2020, and March 2, 2021.

F4 · derivative.expiration_date: On March 2, 2018 the reporting person received a grant of 6,075 RSUs as part of their 2018 Long Term Incentive Plan award. The RSUs will vest in three equal annual installments on each of March 2, 2019, March 2, 2020, and March 2, 2021.

SEC source: 0000874501-18-000040 · wf-form4_152037695815412.xml · nonDerivative · entry 2

REILLY MICHAEL FRANCIS · CIK 0001562285 · Senior Managing Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 7,158

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

SEC source: 0000874501-18-000040 · wf-form4_152037695815412.xml · nonDerivative · entry 1

REILLY MICHAEL FRANCIS · CIK 0001562285 · Senior Managing Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 7,880

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 deferred stock units ("DSUs") 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 2016 and 2017 Short Term Incentive award.

SEC source: 0000874501-18-000039 · wf-form4_152037687036344.xml · derivative · entry 5

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 8,680

Underlying: Common Stock · 2,432 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.

F5 · derivative.exercise_price: Each DSU represents a contingent right to receive one share of the Company's common stock.

F1 · derivative.exercise_date: Represents the aggregate amount of deferred stock units ("DSUs") 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 2016 and 2017 Short Term Incentive award.

F1 · derivative.expiration_date: Represents the aggregate amount of deferred stock units ("DSUs") 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 2016 and 2017 Short Term Incentive award.

SEC source: 0000874501-18-000039 · wf-form4_152037687036344.xml · derivative · entry 4

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 11,112

Underlying: Common Stock · 6,826 shares

Expires not disclosed

F5 · derivative.exercise_price: Each DSU represents a contingent right to receive one share of the Company's common stock.

F6 · derivative.exercise_date: On March 2, 2018, there were 6,826 DSUs granted as part of the 2018 Short Term Incentive Plan. The DSUs shall vest immediately and shall settle and convert into shares of common stock as follows: 50% of the DSUs shall settle and convert into shares of common stock on March 2, 2019, and the remaining 50% of the DSUs shall settle and convert into shares of common stock on March 2, 2020; provided however, that if the reporting person's employment with the Company is terminated for any reason, all of the DSUs will settle and convert into shares of common stock immediately. Notwithstanding the foregoing, a number of vested DSUs sufficient to satisfy certain tax withholding obligations imposed upon the Company may be converted into shares of common stock and withheld by the Company to satisfy such tax withholding obligations.

F6 · derivative.expiration_date: On March 2, 2018, there were 6,826 DSUs granted as part of the 2018 Short Term Incentive Plan. The DSUs shall vest immediately and shall settle and convert into shares of common stock as follows: 50% of the DSUs shall settle and convert into shares of common stock on March 2, 2019, and the remaining 50% of the DSUs shall settle and convert into shares of common stock on March 2, 2020; provided however, that if the reporting person's employment with the Company is terminated for any reason, all of the DSUs will settle and convert into shares of common stock immediately. Notwithstanding the foregoing, a number of vested DSUs sufficient to satisfy certain tax withholding obligations imposed upon the Company may be converted into shares of common stock and withheld by the Company to satisfy such tax withholding obligations.

SEC source: 0000874501-18-000039 · wf-form4_152037687036344.xml · derivative · entry 3

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 11,476

Underlying: Common Stock · 7,180 shares

Expires not disclosed

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

F4 · derivative.exercise_date: On March 2, 2018 the reporting person received a grant of 7,180 RSUs as part of their 2018 Long Term Incentive Plan award. The RSUs will vest in three equal annual installments on each of March 2, 2019, March 2, 2020, and March 2, 2021.

F4 · derivative.expiration_date: On March 2, 2018 the reporting person received a grant of 7,180 RSUs as part of their 2018 Long Term Incentive Plan award. The RSUs will vest in three equal annual installments on each of March 2, 2019, March 2, 2020, and March 2, 2021.

SEC source: 0000874501-18-000039 · wf-form4_152037687036344.xml · nonDerivative · entry 2

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 15,947

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

SEC source: 0000874501-18-000039 · wf-form4_152037687036344.xml · nonDerivative · entry 1

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 17,192

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 deferred stock units ("DSUs") 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 2016 and 2017 Short Term Incentive award.

SEC source: 0000874501-18-000038 · wf-form4_152037680131514.xml · derivative · entry 1

LAMMTENNANT JOAN M · CIK 0001208239 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,209

Underlying: Common Stock · 2,209 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 shall vest on April 30, 2018. 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 shall vest on April 30, 2018. 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: 0000874501-18-000034 · wf-form4_151985640727667.xml · nonDerivative · entry 2

BARRANCO DAVID · CIK 0001562313 · Senior Managing Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 4,319

F2 · shares: As part of this vesting and settlement, 3,080 shares of common stock were withheld by the Company to satisfy certain tax withholding obligations.

SEC source: 0000874501-18-000034 · wf-form4_151985640727667.xml · nonDerivative · entry 1

BARRANCO DAVID · CIK 0001562313 · Senior Managing Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 7,399

F1 · shares: The reporting person acquired 6,225 shares of common stock of Ambac Financial Group, Inc. (the "Company") upon the simultaneous vesting and settlement of the reporting person's 2015 Long Term Incentive Plan award, which had a three year performance period and vested on February 26, 2018.

F1 · price: The reporting person acquired 6,225 shares of common stock of Ambac Financial Group, Inc. (the "Company") upon the simultaneous vesting and settlement of the reporting person's 2015 Long Term Incentive Plan award, which had a three year performance period and vested on February 26, 2018.

SEC source: 0000874501-18-000033 · wf-form4_151985628342834.xml · nonDerivative · entry 2

REILLY MICHAEL FRANCIS · CIK 0001562285 · Senior Managing Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 6,490

F2 · shares: As part of this vesting and settlement, 2,207 shares of common stock were withheld by the Company to satisfy certain tax withholding obligations.

SEC source: 0000874501-18-000033 · wf-form4_151985628342834.xml · nonDerivative · entry 1

REILLY MICHAEL FRANCIS · CIK 0001562285 · Senior Managing Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 8,697

F1 · shares: The reporting person acquired 4,271 shares of common stock of Ambac Financial Group, Inc. (the "Company") upon the simultaneous vesting and settlement of the reporting person's 2015 Long Term Incentive Plan award, which had a three year performance period and vested on February 26, 2018.

F1 · price: The reporting person acquired 4,271 shares of common stock of Ambac Financial Group, Inc. (the "Company") upon the simultaneous vesting and settlement of the reporting person's 2015 Long Term Incentive Plan award, which had a three year performance period and vested on February 26, 2018.

SEC source: 0000874501-18-000032 · wf-form4_151985622637958.xml · nonDerivative · entry 2

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 14,760

F2 · shares: As part of this vesting and settlement, 2,652 shares of common stock were withheld by the Company to satisfy certain tax withholding obligations.

SEC source: 0000874501-18-000032 · wf-form4_151985622637958.xml · nonDerivative · entry 1

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 17,412

F1 · shares: The reporting person acquired 5,695 shares of common stock of Ambac Financial Group, Inc. (the "Company") upon the simultaneous vesting and settlement of the reporting person's 2015 Long Term Incentive Plan award, which had a three year performance period and vested on February 26, 2018.

F1 · price: The reporting person acquired 5,695 shares of common stock of Ambac Financial Group, Inc. (the "Company") upon the simultaneous vesting and settlement of the reporting person's 2015 Long Term Incentive Plan award, which had a three year performance period and vested on February 26, 2018.

SEC source: 0000874501-18-000030 · wf-form4_151985586258931.xml · nonDerivative · entry 2

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 28,945

F2 · shares: As part of this vesting and settlement, 6,675 shares of common stock were withheld by the Company to satisfy certain tax withholding obligations.

SEC source: 0000874501-18-000030 · wf-form4_151985586258931.xml · nonDerivative · entry 1

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 35,620

F1 · shares: The reporting person acquired 14,234 shares of common stock of Ambac Financial Group, Inc. (the "Company") upon the simultaneous vesting and settlement of the reporting person's 2015 Long Term Incentive Plan award, which had a three year performance period and vested on February 26, 2018.

F1 · price: The reporting person acquired 14,234 shares of common stock of Ambac Financial Group, Inc. (the "Company") upon the simultaneous vesting and settlement of the reporting person's 2015 Long Term Incentive Plan award, which had a three year performance period and vested on February 26, 2018.

SEC source: 0000874501-18-000029 · wf-form4_151985577730831.xml · nonDerivative · entry 2

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 9,360

F2 · shares: As part of this vesting and settlement, 2,180 shares of common stock were withheld by the Company to satisfy certain tax withholding obligations.

SEC source: 0000874501-18-000029 · wf-form4_151985577730831.xml · nonDerivative · entry 1

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 11,540

F1 · shares: The reporting person acquired 4,271 shares of common stock of Ambac Financial Group, Inc. (the "Company") upon the simultaneous vesting and settlement of the reporting person's 2015 Long Term Incentive Plan award, which had a three year performance period and vested on February 26, 2018.

F1 · price: The reporting person acquired 4,271 shares of common stock of Ambac Financial Group, Inc. (the "Company") upon the simultaneous vesting and settlement of the reporting person's 2015 Long Term Incentive Plan award, which had a three year performance period and vested on February 26, 2018.

SEC source: 0000874501-18-000016 · wf-form4_151933678252389.xml · derivative · entry 3

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 4,296

Underlying: Common Stock · 4,296 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.

F1 · derivative.exercise_price: Each RSU represents a contingent right to receive one share of the Company's common stock.

F2 · derivative.exercise_date: On February 21, 2018, there were 4,296 restricted stock units ("RSUs") that settled, and were converted into shares of common stock of the Company.

F2 · derivative.expiration_date: On February 21, 2018, there were 4,296 restricted stock units ("RSUs") that settled, and were converted into shares of common stock of the Company.

SEC source: 0000874501-18-000016 · wf-form4_151933678252389.xml · nonDerivative · entry 2

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 11,717

SEC source: 0000874501-18-000016 · wf-form4_151933678252389.xml · nonDerivative · entry 1

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 13,843

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.

SEC source: 0000874501-18-000015 · wf-form4_151933669115717.xml · derivative · entry 3

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 4,296

Underlying: Common Stock · 4,296 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.

F1 · derivative.exercise_price: Each RSU represents a contingent right to receive one share of the Company's common stock.

F2 · derivative.exercise_date: On February 21, 2018, there were 4,296 restricted stock units ("RSUs") that settled, and were converted into shares of common stock of the Company.

F2 · derivative.expiration_date: On February 21, 2018, there were 4,296 restricted stock units ("RSUs") that settled, and were converted into shares of common stock of the Company.

SEC source: 0000874501-18-000015 · wf-form4_151933669115717.xml · nonDerivative · entry 2

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 21,386

SEC source: 0000874501-18-000015 · wf-form4_151933669115717.xml · nonDerivative · entry 1

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 23,426

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.

SEC source: 0000874501-17-000111 · wf-form4_151069490640607.xml · nonDerivative · entry 1

PRIEUR C JAMES · CIK 0001244204 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 15,000

SEC source: 0000874501-17-000098 · wf-form4_150723379436825.xml · nonDerivative · entry 3

LeBlanc Claude · CIK 0001380820 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 47,500

SEC source: 0000874501-17-000098 · wf-form4_150723379436825.xml · nonDerivative · entry 2

LeBlanc Claude · CIK 0001380820 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 46,155

SEC source: 0000874501-17-000098 · wf-form4_150723379436825.xml · nonDerivative · entry 1

LeBlanc Claude · CIK 0001380820 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 32,800