Welcome to our dedicated page for Ambac Finl Group SEC filings (Ticker: AMBC), a comprehensive resource for investors and traders seeking official regulatory documents including 10-K annual reports, 10-Q quarterly earnings, 8-K material events, and insider trading forms.
The AMBC SEC filings page on Stock Titan aggregates regulatory documents for Ambac Financial Group, Inc., which has been renamed Octave Specialty Group, Inc. According to an 8-K filing, the company amended its certificate of incorporation to adopt the Octave Specialty Group, Inc. name, with Ambac Financial Group, Inc. identified as the former name. These filings provide a detailed record of the company’s evolution from a financial guarantee-focused holding company to a specialty property and casualty insurance and insurance distribution platform.
Users can review Form 8-K current reports that describe material events such as the sale of Ambac Assurance Corporation and Ambac Assurance UK Limited to entities managed by Oaktree Capital Management, the acquisition of ArmadaCorp Capital, LLC and ArmadaCare, and the entry into senior secured credit facilities used in part to finance acquisitions. Other 8-K filings cover the name change to Octave Specialty Group, Inc., changes in the company’s independent registered public accounting firm, and executive compensation and employment agreements.
In addition to event-driven reports, investors typically consult annual reports on Form 10-K and quarterly reports on Form 10-Q for comprehensive financial statements, segment disclosures for Insurance Distribution and Specialty P&C Insurance, and discussions of risk factors and business strategy. While specific 10-K and 10-Q documents are not summarized here, they are accessible through EDGAR and provide context on revenues from commissions, program fees, and net premiums earned, as well as underwriting results at Everspan Group and related entities.
The filings page also surfaces information on insider and governance-related disclosures that may appear in proxy statements and ownership reports, alongside exhibits such as credit agreements, purchase agreements, and investor rights agreements. Stock Titan enhances access to these materials with AI-powered summaries that highlight key terms, structural changes, and financial implications, helping users interpret lengthy documents more efficiently.
By using this page, researchers can trace the regulatory history associated with the AMBC ticker, understand the transactions that enabled the shift to a pure-play MGA and specialty insurance platform, and follow the formal documentation of the company’s rebranding to Octave Specialty Group, Inc. and related governance changes.
Claude LeBlanc, Chief Executive Officer and Director of Ambac Financial Group, Inc. (AMBC), reported multiple transactions tied to a change of control following the sale of Ambac Assurance Corporation to an entity managed by Oaktree Capital Management. Upon closing, a change of control triggered vesting and settlement of Deferred Share Units (DSUs) and acceleration of 2023 and 2024 Performance Stock Units (PSUs). On 09/29/2025 the reporting person had 661,355 DSUs vest and settle; 350,188 shares were withheld to satisfy tax withholding at $9.72 per share, leaving 914,458 shares beneficially owned that day.
On 09/30/2025 the Compensation Committee approved acceleration of the 2023 and 2024 PSUs, producing 193,353 shares from PSUs with 111,034 shares withheld at $8.34 per share, resulting in 996,777 then 1,021,777 shares after a 10/01/2025 acquisition of 25,000 shares at $8.54. The filings show conversion of certain PSUs into DSUs under the Executive Stock Deferral Plan and tax withholdings to cover obligations.
Stephen Michael Ksenak, Sr. MD & General Counsel of Ambac Financial Group (AMBC), reported transactions on 09/29/2025. A change of control triggered by the sale of Ambac Assurance to an entity owned by funds managed by Oaktree Capital Management caused his Deferred Share Units (DSUs) to vest and settle into common stock. 129,146 DSUs converted into 129,146 shares at no cash price, and 43,522 of those shares were withheld by the company at an effective withholding price of $9.72 to satisfy tax obligations. After these transactions Ksenak beneficially owned 205,256 shares, held directly.
Ambac Financial Group (AMBC) insider filing reports that a change of control tied to the sale of Ambac Assurance triggered vesting and settlement of Deferred Share Units (DSUs) for reporting person Daniel McGinnis, Sr. MD & COO. The filing shows 29,832 DSUs vested and were settled into common stock at no cash price, and 10,053 shares were withheld by the company to satisfy tax withholding at a reported price of $9.72 per share. The filing lists beneficial ownership figures in the table as 48,288 and 38,235 shares following the reported transactions and states that each DSU represents a contingent right to one share.
Ambac Financial Group director Lisa G. Iglesias had 67,777 restricted stock units vest and settle on 09/29/2025 following a change of control tied to the sale of Ambac Assurance Corporation to funds managed by Oaktree Capital Management, L.P. The RSUs converted to 67,777 shares of Ambac common stock at no cost to the reporting person. After the transaction the reporting person beneficially owned 82,327 shares. The filing is a Form 4 reporting the change in beneficial ownership by a director and is signed by an attorney-in-fact on 09/30/2025.
Ambac Financial Group director Kristi Ann Matus reported a transaction on 09/29/2025. A change of control triggered by the sale of Ambac Assurance to funds managed by Oaktree Capital Management caused 39,179 restricted stock units (RSUs) to vest and settle into common stock. The RSUs represent one share per unit and were settled at a reported price of $0. Following the settlement, the reporting person beneficially owned 48,179 shares of Ambac Financial Group common stock. The Form 4 was signed by William J. White, attorney in fact, on 09/30/2025.
Ambac Financial Group director Michael D. Price reported a change in beneficial ownership following a corporate transaction. On 09/29/2025, 39,179 restricted stock units (RSUs) vested and were settled, resulting in the acquisition of 39,179 shares of Ambac common stock at a reported price of $0 per share. The vesting was triggered by a change of control when Ambac Assurance Corporation was sold to an entity owned by funds managed by Oaktree Capital Management, L.P. After the transaction, Mr. Price beneficially owns 205,477 shares. The Form 4 was signed by William J. White, attorney in fact, on 09/30/2025.
Ian David Haft, a director of Ambac Financial Group, Inc. (AMBC), reported the vesting and settlement of 131,921 restricted stock units that converted into 131,921 shares of common stock on 09/29/2025. The vesting was triggered by a change of control following the closing of the sale of Ambac Assurance Corporation to an entity owned by funds managed by Oaktree Capital Management, L.P. Each RSU represents a contingent right to one share of common stock, and the underlying shares were recorded with a price of $0. The filing shows the shares are beneficially owned directly and the Form 4 was signed by William White, attorney-in-fact, on 09/30/2025.
Ambac Financial Group director Jeffrey Scott Stein reported that 167,807 restricted stock units (RSUs) vested and were settled on 09/29/2025 following a change of control triggered by the sale of Ambac Assurance Corporation to an entity owned by funds managed by Oaktree Capital Management, L.P. Each RSU represents a contingent right to receive one share of Ambac common stock. After the settlement, Mr. Stein beneficially owns 217,807 shares of Ambac common stock. The filing was signed by William J. White as attorney-in-fact on 09/30/2025.
Ambac Financial Group, Inc. (AMBC) Form 3 shows Cristina E. Ahn, listed as a Director and Chief Accounting Officer, reported initial beneficial ownership of 2,486 restricted stock units (RSUs) that represent common stock. The RSUs were granted on March 10, 2025 as part of the 2025 Long Term Incentive Plan and will vest in three equal annual installments beginning March 10, 2026, with subsequent vesting on March 3, 2027 and March 3, 2028. The filing was dated 09/29/2025 for the event and signed via attorney-in-fact on 09/30/2025. No other securities or derivative holdings are reported on this form.
Ambac Financial Group accelerated executive PSU vesting after selling its legacy assurance business. After the sale of Ambac Assurance Corporation, the Compensation Committee accelerated vesting of 2023 and 2024 performance stock units for CEO Claude LeBlanc, CFO David Trick and COO R. Sharon Smith because many performance metrics were tied to the legacy business that closed with the sale. The 2023 awards vested at 121.5% of target and the 2024 awards vested at 100% of target. The vested PSU amounts were 368,313 for Mr. LeBlanc, 89,071 for Mr. Trick and 79,441 for Ms. Smith.
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