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Ksenak Stephen Michael

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74788
SEC CIK
0001527850

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CompanyLast reported asReport datePublished
OCTAVE SPECIALTY GROUP INCAMBC · Entity 6308Sr. MD & General CounselSeptember 29, 2025October 01, 2025

Disclosed balances

About these balances

Latest available filing per company, not a reconstructed current portfolio. Matching sequences show the last reported balance with all source rows expandable; grouping alone does not establish account ownership. Do not add unresolved positions together. Filings may omit unchanged positions, and amendments may correct only part of an older disclosure. Jointly reported shares are not necessarily this owner's personal holdings.

OCTAVE SPECIALTY GROUP INC

Report date September 29, 2025 · Filed October 01, 2025

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Common StockSEC Table I · non-derivativeDirect205,256 Ending reported balance After 2025-09-29 transaction · row 2
2 source rows · reconciled sequence

Row 1 · 2025-09-29 · Conversion · Acquired 129,146 · Balance 248,778

F1: Upon the closing of the sale of Ambac Assurance Corporation by Ambac Financial Group to an entity owned by funds managed by Oaktree Capital Management, L.P., a change of control was triggered causing the Reporting Person's Deferred Share Units ("DSUs") to vest and settle.

Row 2 · 2025-09-29 · Tax withholding · Disposed 43,522 · Balance 205,256

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

Deferred Share UnitsSEC Table II · derivative / convertible securityDirect0 Reported balance After 2025-09-29 transaction · row 3 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 3 · 2025-09-29 · Conversion · Disposed 129,146 · Balance 0

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

F1: Upon the closing of the sale of Ambac Assurance Corporation by Ambac Financial Group to an entity owned by funds managed by Oaktree Capital Management, L.P., a change of control was triggered causing the Reporting Person's Deferred Share Units ("DSUs") to vest and settle.

Filing footnotes · ownership attribution and instrument terms

F1: Upon the closing of the sale of Ambac Assurance Corporation by Ambac Financial Group to an entity owned by funds managed by Oaktree Capital Management, L.P., a change of control was triggered causing the Reporting Person's Deferred Share Units ("DSUs") to vest and settle.

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

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

Transaction history

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Purchases/sales include open-market and private transactions. Plan disclosure applies to the filing; individual rows may differ. “Not disclosed” is not “unplanned.”

The cutoff filters transaction history only. Company summaries and owner relationships show the latest available disclosures. Parser corrections can improve historical records.

Transaction dateCompanyActivity / securityShares / unitsReported priceReported valueDetails
March 04, 2019 Filed Mar 6, 2019 01:40 UTC OCTAVE SPECIALTY GROUP INC AMBC · Entity 6308 Exercise / conversionRestricted Stock Units · Derivative 2,394 $0.00 $0.00
Disclosure

SEC source: 0000874501-19-000033 · wf-form4_155183640860505.xml · derivative · entry 5

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 14,793

Underlying: Common Stock · 2,394 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 RSU represents a contingent right to receive one share of the Company's common stock.

F3 · derivative.exercise_date: On March 4, 2019, there were 2,394 restricted stock units ("RSUs") that settled, and were converted into shares of common stock of the Company.

F3 · derivative.expiration_date: On March 4, 2019, there were 2,394 restricted stock units ("RSUs") that settled, and were converted into shares of common stock of the Company.

Read SEC document
March 04, 2019 Filed Mar 6, 2019 01:40 UTC OCTAVE SPECIALTY GROUP INC AMBC · Entity 6308 Exercise / conversionDeferred Share Units · Derivative 5,581 $0.00 $0.00
Disclosure

SEC source: 0000874501-19-000033 · wf-form4_155183640860505.xml · derivative · entry 4

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,099

Underlying: Common Stock · 5,581 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 · security: Each DSU represents a contingent right to receive one share of the Company's common stock.

F4 · 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 2017 and 2018 Short Term Incentive Plan award and a limited number of DSUs awarded pursuant to the 2019 Short Term Incentive Plan that were settled in order to satisfy certain tax withholding obligations imposed upon the Company.

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 2017 and 2018 Short Term Incentive Plan award and a limited number of DSUs awarded pursuant to the 2019 Short Term Incentive Plan that were settled in order to satisfy certain tax withholding obligations imposed upon the Company.

Read SEC document
March 04, 2019 Filed Mar 6, 2019 01:40 UTC OCTAVE SPECIALTY GROUP INC AMBC · Entity 6308 Exercise / conversionCommon Stock 2,394 $0.00 $0.00
Disclosure

SEC source: 0000874501-19-000033 · wf-form4_155183640860505.xml · nonDerivative · entry 3

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 32,944

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 · shares: On March 4, 2019, there were 2,394 restricted stock units ("RSUs") that settled, and were converted into shares of common stock of the Company.

Read SEC document
March 04, 2019 Filed Mar 6, 2019 01:40 UTC OCTAVE SPECIALTY GROUP INC AMBC · Entity 6308 Tax withholdingCommon Stock 2,693 $20.11 $54,156.23
Disclosure

SEC source: 0000874501-19-000033 · wf-form4_155183640860505.xml · nonDerivative · entry 2

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 30,550

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

Read SEC document
March 04, 2019 Filed Mar 6, 2019 01:40 UTC OCTAVE SPECIALTY GROUP INC AMBC · Entity 6308 Exercise / conversionCommon Stock 5,581 $0.00 $0.00
Disclosure

SEC source: 0000874501-19-000033 · wf-form4_155183640860505.xml · nonDerivative · entry 1

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 33,243

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 2017 and 2018 Short Term Incentive Plan award and a limited number of DSUs awarded pursuant to the 2019 Short Term Incentive Plan that were settled in order to satisfy certain tax withholding obligations imposed upon the Company.

Read SEC document
February 25, 2019 Filed Feb 27, 2019 21:29 UTC OCTAVE SPECIALTY GROUP INC AMBC · Entity 6308 Tax withholdingCommon Stock 4,598 $19.71 $90,626.58
Disclosure

SEC source: 0000874501-19-000013 · wf-form4_155130293584587.xml · nonDerivative · entry 2

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 27,662

F2 · shares: As part of this vesting and settlement, 4,598 shares of common stock were withheld by the Company to satisfy certain tax withholding obligations.

Read SEC document
February 25, 2019 Filed Feb 27, 2019 21:29 UTC OCTAVE SPECIALTY GROUP INC AMBC · Entity 6308 GrantCommon Stock 13,569 $0.00 $0.00
Disclosure

SEC source: 0000874501-19-000013 · wf-form4_155130293584587.xml · nonDerivative · entry 1

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 32,260

F1 · shares: The reporting person acquired 13,569 shares of common stock of Ambac Financial Group, Inc. (the "Company") upon the simultaneous vesting and settlement of the reporting person's 2016 Long Term Incentive Plan award, which had a three year performance period and vested on February 25, 2019.

Read SEC document
February 21, 2019 Filed Feb 22, 2019 21:54 UTC OCTAVE SPECIALTY GROUP INC AMBC · Entity 6308 Exercise / conversionRestricted Stock Units · Derivative 4,296 $0.00 $0.00
Disclosure

SEC source: 0000874501-19-000003 · wf-form4_155087243718247.xml · derivative · entry 3

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 17,187

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, 2019, there were 4,296 restricted stock units that settled, and were converted into shares of common stock of the Company.

F2 · derivative.expiration_date: On February 21, 2019, there were 4,296 restricted stock units that settled, and were converted into shares of common stock of the Company.

Read SEC document
February 21, 2019 Filed Feb 22, 2019 21:54 UTC OCTAVE SPECIALTY GROUP INC AMBC · Entity 6308 Tax withholdingCommon Stock 1,552 $19.87 $30,838.24
Disclosure

SEC source: 0000874501-19-000003 · wf-form4_155087243718247.xml · nonDerivative · entry 2

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 18,691

Read SEC document
February 21, 2019 Filed Feb 22, 2019 21:54 UTC OCTAVE SPECIALTY GROUP INC AMBC · Entity 6308 Exercise / conversionCommon Stock 4,296 $0.00 $0.00
Disclosure

SEC source: 0000874501-19-000003 · wf-form4_155087243718247.xml · nonDerivative · entry 1

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 20,243

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.

Read SEC document
May 16, 2018 Filed May 18, 2018 20:10 UTC OCTAVE SPECIALTY GROUP INC AMBC · Entity 6308 Exercise / conversionRestricted Stock Units · Derivative 443 $0.00 $0.00
Disclosure

SEC source: 0000874501-18-000077 · wf-form4_152667423895768.xml · derivative · entry 4

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 21,483

Underlying: Common Stock · 443 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 RSU represents a contingent right to receive one share of common stock of the Company.

F1 · derivative.exercise_date: On May 16, 2018, the Grant Date, 443 restricted stock units ("RSUs") vested, and were settled and 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 May 16, 2018, the Grant Date, 443 restricted stock units ("RSUs") vested, and were settled and converted into shares of common stock and withheld by Ambac Financial Group, Inc. (the "Company") to satisfy certain tax withholding obligations.

Read SEC document
May 16, 2018 Filed May 18, 2018 20:10 UTC OCTAVE SPECIALTY GROUP INC AMBC · Entity 6308 GrantRestricted Stock Units · Derivative 10,450 $0.00 $0.00
Disclosure

SEC source: 0000874501-18-000077 · wf-form4_152667423895768.xml · derivative · entry 3

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 21,926

Underlying: Common Stock · 10,450 shares

Expires not disclosed

F2 · derivative.exercise_price: Each RSU represents a contingent right to receive one share of common stock of the Company.

F3 · derivative.exercise_date: On May 16, 2018, there were 10,450 RSUs granted in recognition of the reporting person's efforts to bring about the successful exit of the Segregated Account of Ambac Assurance Corporation from Rehabilitation. The RSUs shall vest immediately and shall settle and convert into shares of common stock as follows: 50% of the RSUs shall settle and convert into shares of common stock on May 16, 2019, and the remaining 50% of the RSUs shall settle and convert into shares of common stock on May 16, 2020; provided however, that if the reporting person's employment with the Company is terminated for any reason (other than termination for cause), all of the RSUs will settle and convert into shares of common stock immediately. Notwithstanding the foregoing, a number of vested RSUs 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.

F3 · derivative.expiration_date: On May 16, 2018, there were 10,450 RSUs granted in recognition of the reporting person's efforts to bring about the successful exit of the Segregated Account of Ambac Assurance Corporation from Rehabilitation. The RSUs shall vest immediately and shall settle and convert into shares of common stock as follows: 50% of the RSUs shall settle and convert into shares of common stock on May 16, 2019, and the remaining 50% of the RSUs shall settle and convert into shares of common stock on May 16, 2020; provided however, that if the reporting person's employment with the Company is terminated for any reason (other than termination for cause), all of the RSUs will settle and convert into shares of common stock immediately. Notwithstanding the foregoing, a number of vested RSUs 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.

Read SEC document
May 16, 2018 Filed May 18, 2018 20:10 UTC OCTAVE SPECIALTY GROUP INC AMBC · Entity 6308 Tax withholdingCommon Stock 443 $19.14 $8,479.02
Disclosure

SEC source: 0000874501-18-000077 · wf-form4_152667423895768.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

F1 · shares: On May 16, 2018, the Grant Date, 443 restricted stock units ("RSUs") vested, and were settled and converted into shares of common stock and withheld by Ambac Financial Group, Inc. (the "Company") to satisfy certain tax withholding obligations.

Read SEC document
May 16, 2018 Filed May 18, 2018 20:10 UTC OCTAVE SPECIALTY GROUP INC AMBC · Entity 6308 Exercise / conversionCommon Stock 443 $0.00 $0.00
Disclosure

SEC source: 0000874501-18-000077 · wf-form4_152667423895768.xml · nonDerivative · entry 1

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 16,390

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 May 16, 2018, the Grant Date, 443 restricted stock units ("RSUs") vested, and were settled and converted into shares of common stock and withheld by Ambac Financial Group, Inc. (the "Company") to satisfy certain tax withholding obligations.

Read SEC document
March 02, 2018 Filed Mar 6, 2018 22:54 UTC OCTAVE SPECIALTY GROUP INC AMBC · Entity 6308 Exercise / conversionDeferred Share Units · Derivative 2,432 $0.00 $0.00
Disclosure

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.

Read SEC document
March 02, 2018 Filed Mar 6, 2018 22:54 UTC OCTAVE SPECIALTY GROUP INC AMBC · Entity 6308 GrantDeferred Share Units · Derivative 6,826 $0.00 $0.00
Disclosure

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.

Read SEC document
March 02, 2018 Filed Mar 6, 2018 22:54 UTC OCTAVE SPECIALTY GROUP INC AMBC · Entity 6308 GrantRestricted Stock Units · Derivative 7,180 $0.00 $0.00
Disclosure

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.

Read SEC document
March 02, 2018 Filed Mar 6, 2018 22:54 UTC OCTAVE SPECIALTY GROUP INC AMBC · Entity 6308 Tax withholdingCommon Stock 1,245 $15.09 $18,787.05
Disclosure

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.

Read SEC document
March 02, 2018 Filed Mar 6, 2018 22:54 UTC OCTAVE SPECIALTY GROUP INC AMBC · Entity 6308 Exercise / conversionCommon Stock 2,432 $0.00 $0.00
Disclosure

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.

Read SEC document
February 26, 2018 Filed Feb 28, 2018 22:18 UTC OCTAVE SPECIALTY GROUP INC AMBC · Entity 6308 Tax withholdingCommon Stock 2,652 $15.72 $41,689.44
Disclosure

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.

Read SEC document
February 26, 2018 Filed Feb 28, 2018 22:18 UTC OCTAVE SPECIALTY GROUP INC AMBC · Entity 6308 GrantCommon Stock 5,695 $0.00 $0.00
Disclosure

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.

Read SEC document
February 21, 2018 Filed Feb 22, 2018 22:00 UTC OCTAVE SPECIALTY GROUP INC AMBC · Entity 6308 Exercise / conversionRestricted Stock Units · Derivative 4,296 $0.00 $0.00
Disclosure

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.

Read SEC document
February 21, 2018 Filed Feb 22, 2018 22:00 UTC OCTAVE SPECIALTY GROUP INC AMBC · Entity 6308 Tax withholdingCommon Stock 2,126 $15.84 $33,675.84
Disclosure

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

Read SEC document
February 21, 2018 Filed Feb 22, 2018 22:00 UTC OCTAVE SPECIALTY GROUP INC AMBC · Entity 6308 Exercise / conversionCommon Stock 4,296 $0.00 $0.00
Disclosure

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.

Read SEC document
May 12, 2017 Filed May 16, 2017 20:57 UTC OCTAVE SPECIALTY GROUP INC AMBC · Entity 6308 Tax withholdingCommon Stock 1,399 $17.18 $24,034.82
Disclosure

SEC source: 0000874501-17-000064 · wf-form4_149496821477257.xml · nonDerivative · entry 2

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 9,547

F2 · shares: As part of this vesting and settlement, 1,399 shares of common stock were withheld by the Company to satisfy certain tax withholding obligations.

Read SEC document
May 12, 2017 Filed May 16, 2017 20:57 UTC OCTAVE SPECIALTY GROUP INC AMBC · Entity 6308 GrantCommon Stock 2,979 $0.00 $0.00
Disclosure

SEC source: 0000874501-17-000064 · wf-form4_149496821477257.xml · nonDerivative · entry 1

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 10,946

F1 · shares: The reporting person acquired 2,979 shares of common stock of Ambac Financial Group, Inc. (the "Company") upon the simultaneous vesting and settlement of the reporting person's 2014 Long Term Incentive Plan award, which had a three year performance period and vested on May 12, 2017.

F1 · price: The reporting person acquired 2,979 shares of common stock of Ambac Financial Group, Inc. (the "Company") upon the simultaneous vesting and settlement of the reporting person's 2014 Long Term Incentive Plan award, which had a three year performance period and vested on May 12, 2017.

Read SEC document
March 02, 2017 Filed Mar 6, 2017 21:33 UTC OCTAVE SPECIALTY GROUP INC AMBC · Entity 6308 Exercise / conversionDeferred Share Units · Derivative 189 $22.35 $4,224.15
Disclosure

SEC source: 0000874501-17-000024 · wf-form4_148883597653300.xml · derivative · entry 4

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 4,286

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.

F2 · 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, 2017, the Grant Date, 189 deferred share units ("DSUs") vested, 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, 2017, the Grant Date, 189 deferred share units ("DSUs") vested, were converted into shares of common stock and withheld by Ambac Financial Group, Inc. (the "Company") to satisfy certain tax withholding obligations.

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March 02, 2017 Filed Mar 6, 2017 21:33 UTC OCTAVE SPECIALTY GROUP INC AMBC · Entity 6308 GrantDeferred Share Units · Derivative 4,475 Not disclosed Not disclosed
Disclosure

SEC source: 0000874501-17-000024 · wf-form4_148883597653300.xml · derivative · entry 3

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 4,475

Underlying: Common Stock · 4,475 shares

Expires not disclosed

F2 · derivative.exercise_price: Each DSU represents a contingent right to receive one share of the Company's common stock.

F4 · price: The DSUs were awarded under the Company's 2013 Incentive Compensation Plan. The number of DSUs granted was calculated based on the closing price of the Company's common stock on March 2, 2017.

F3 · derivative.exercise_date: 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, 2018, and the remaining 50% of the DSUs shall settle and convert into shares of common stock on March 2, 2019; 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.

F3 · derivative.expiration_date: 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, 2018, and the remaining 50% of the DSUs shall settle and convert into shares of common stock on March 2, 2019; 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.

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March 02, 2017 Filed Mar 6, 2017 21:33 UTC OCTAVE SPECIALTY GROUP INC AMBC · Entity 6308 Tax withholdingCommon Stock 189 $22.35 $4,224.15
Disclosure

SEC source: 0000874501-17-000024 · wf-form4_148883597653300.xml · nonDerivative · entry 2

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 7,967

F1 · security: On March 2, 2017, the Grant Date, 189 deferred share units ("DSUs") vested, were converted into shares of common stock and withheld by Ambac Financial Group, Inc. (the "Company") to satisfy certain tax withholding obligations.

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March 02, 2017 Filed Mar 6, 2017 21:33 UTC OCTAVE SPECIALTY GROUP INC AMBC · Entity 6308 Exercise / conversionCommon Stock 189 $22.35 $4,224.15
Disclosure

SEC source: 0000874501-17-000024 · wf-form4_148883597653300.xml · nonDerivative · entry 1

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 8,156

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 · security: On March 2, 2017, the Grant Date, 189 deferred share units ("DSUs") vested, were converted into shares of common stock and withheld by Ambac Financial Group, Inc. (the "Company") to satisfy certain tax withholding obligations.

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February 21, 2017 Filed Feb 22, 2017 22:48 UTC OCTAVE SPECIALTY GROUP INC AMBC · Entity 6308 Exercise / conversionRestricted Stock Units · Derivative 4,295 $0.00 $0.00
Disclosure

SEC source: 0000874501-17-000014 · wf-form4_148780368001811.xml · derivative · entry 3

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 8,592

Underlying: Common Stock · 4,295 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, 2017, there were 4,295 restricted stock units ("RSUs") that vested, settled, and were converted into shares of common stock of the Company.

F2 · derivative.expiration_date: On February 21, 2017, there were 4,295 restricted stock units ("RSUs") that vested, settled, and were converted into shares of common stock of the Company.

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February 21, 2017 Filed Feb 22, 2017 22:48 UTC OCTAVE SPECIALTY GROUP INC AMBC · Entity 6308 Tax withholdingCommon Stock 2,017 $22.18 $44,737.06
Disclosure

SEC source: 0000874501-17-000014 · wf-form4_148780368001811.xml · nonDerivative · entry 2

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 7,967

Read SEC document
February 21, 2017 Filed Feb 22, 2017 22:48 UTC OCTAVE SPECIALTY GROUP INC AMBC · Entity 6308 Exercise / conversionCommon Stock 4,295 $0.00 $0.00
Disclosure

SEC source: 0000874501-17-000014 · wf-form4_148780368001811.xml · nonDerivative · entry 1

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 9,984

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.

Read SEC document
December 20, 2016 Filed Dec 21, 2016 21:09 UTC OCTAVE SPECIALTY GROUP INC AMBC · Entity 6308 Exercise / conversionRestricted Stock Units · Derivative 4,674 Not disclosed Not disclosed
Disclosure

SEC source: 0000874501-16-000297 · wf-form4_148235455035877.xml · derivative · entry 3

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 12,887

Underlying: Common Stock · 4,674 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 RSU represents a contingent right to receive one share of the Company's common stock.

F1 · price: On December 20, 2016, there were 4,674 restricted stock units ("RSUs") that settled, and were converted into shares of common stock of the Company.

F1 · derivative.exercise_date: On December 20, 2016, there were 4,674 restricted stock units ("RSUs") that settled, and were converted into shares of common stock of the Company.

F1 · derivative.expiration_date: On December 20, 2016, there were 4,674 restricted stock units ("RSUs") that settled, and were converted into shares of common stock of the Company.

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December 20, 2016 Filed Dec 21, 2016 21:09 UTC OCTAVE SPECIALTY GROUP INC AMBC · Entity 6308 Tax withholdingCommon Stock 2,085 $22.07 $46,015.95
Disclosure

SEC source: 0000874501-16-000297 · wf-form4_148235455035877.xml · nonDerivative · entry 2

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 5,689

Read SEC document
December 20, 2016 Filed Dec 21, 2016 21:09 UTC OCTAVE SPECIALTY GROUP INC AMBC · Entity 6308 Exercise / conversionCommon Stock 4,674 $0.00 $0.00
Disclosure

SEC source: 0000874501-16-000297 · wf-form4_148235455035877.xml · nonDerivative · entry 1

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 7,774

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: On December 20, 2016, there were 4,674 restricted stock units ("RSUs") that settled, and were converted into shares of common stock of the Company.

Read SEC document

Value uses the disclosed total when available, otherwise shares × reported transaction price. It is not an estimate of exercise cash cost or investment performance.