<SEC-DOCUMENT>0001446580-25-000104.txt : 20251113
<SEC-HEADER>0001446580-25-000104.hdr.sgml : 20251113
<ACCEPTANCE-DATETIME>20251113173724
ACCESSION NUMBER:		0001446580-25-000104
CONFORMED SUBMISSION TYPE:	SCHEDULE 13G/A
PUBLIC DOCUMENT COUNT:		2
FILED AS OF DATE:		20251113
DATE AS OF CHANGE:		20251113

SUBJECT COMPANY:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			OCTAVE SPECIALTY GROUP INC
		CENTRAL INDEX KEY:			0000874501
		STANDARD INDUSTRIAL CLASSIFICATION:	SURETY INSURANCE [6351]
		ORGANIZATION NAME:           	02 Finance
		EIN:				133621676
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SCHEDULE 13G/A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	005-41911
		FILM NUMBER:		251479987

	BUSINESS ADDRESS:	
		STREET 1:		ONE WORLD TRADE CENTER
		STREET 2:		ONE WORLD TRADE CENTER
		CITY:			NEW YORK
		STATE:			NY
		BUSINESS PHONE:		2126587470

	MAIL ADDRESS:	
		STREET 1:		ONE WORLD TRADE CENTER
		STREET 2:		ONE WORLD TRADE CENTER
		CITY:			NEW YORK
		STATE:			NY

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	AMBAC FINANCIAL GROUP INC
		DATE OF NAME CHANGE:	19980121

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	AMBAC INC /DE/
		DATE OF NAME CHANGE:	19930328

FILED BY:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			SUSQUEHANNA SECURITIES, LLC
		CENTRAL INDEX KEY:			0001446580
		ORGANIZATION NAME:           	
		EIN:				232754552

	FILING VALUES:
		FORM TYPE:		SCHEDULE 13G/A

	BUSINESS ADDRESS:	
		STREET 1:		401 CITY AVENUE, SUITE 220
		CITY:			BALA CYNWYD
		STATE:			PA
		ZIP:			19004
		BUSINESS PHONE:		610-617-2600

	MAIL ADDRESS:	
		STREET 1:		401 CITY AVENUE, SUITE 220
		CITY:			BALA CYNWYD
		STATE:			PA
		ZIP:			19004

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	SUSQUEHANNA SECURITIES
		DATE OF NAME CHANGE:	20130709

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	Susquehanna Securities
		DATE OF NAME CHANGE:	20080930
</SEC-HEADER>
<DOCUMENT>
<TYPE>SCHEDULE 13G/A
<SEQUENCE>1
<FILENAME>primary_doc.xml
<TEXT>
<XML>
<?xml version="1.0" encoding="UTF-8"?><edgarSubmission xmlns="http://www.sec.gov/edgar/schedule13g" xmlns:com="http://www.sec.gov/edgar/common">
  <headerData>
    <submissionType>SCHEDULE 13G/A</submissionType>
    <previousAccessionNumber>0001446580-25-000061</previousAccessionNumber>
    <filerInfo>
      <filer>
        <filerCredentials>
          <cik>0001446580</cik>
          <ccc>XXXXXXXX</ccc>
        </filerCredentials>
      </filer>
      <liveTestFlag>LIVE</liveTestFlag>



    </filerInfo>
  </headerData>
  <formData>
    <coverPageHeader>
      <amendmentNo>1</amendmentNo>
      <securitiesClassTitle>Common Stock, $0.01 par value per share</securitiesClassTitle>
      <eventDateRequiresFilingThisStatement>09/30/2025</eventDateRequiresFilingThisStatement>
      <issuerInfo>
        <issuerCik>0000874501</issuerCik>
        <issuerName>Ambac Financial Group, Inc.</issuerName>
        <issuerCusip>023139884</issuerCusip>
        <issuerPrincipalExecutiveOfficeAddress>
          <com:street1>One World Trade Center</com:street1>
          <com:city>New York</com:city>
          <com:stateOrCountry>NY</com:stateOrCountry>
          <com:zipCode>10007</com:zipCode>
        </issuerPrincipalExecutiveOfficeAddress>
      </issuerInfo>
      <designateRulesPursuantThisScheduleFiled>
        <designateRulePursuantThisScheduleFiled>Rule 13d-1(b)</designateRulePursuantThisScheduleFiled>
      </designateRulesPursuantThisScheduleFiled>
    </coverPageHeader>
    <coverPageHeaderReportingPersonDetails>

      <reportingPersonName>G1 Execution Services, LLC</reportingPersonName>
      <citizenshipOrOrganization>IL</citizenshipOrOrganization>
      <reportingPersonBeneficiallyOwnedNumberOfShares>
        <soleVotingPower>5098</soleVotingPower>
        <sharedVotingPower>1017308</sharedVotingPower>
        <soleDispositivePower>5098</soleDispositivePower>
        <sharedDispositivePower>1017308</sharedDispositivePower>
      </reportingPersonBeneficiallyOwnedNumberOfShares>
      <reportingPersonBeneficiallyOwnedAggregateNumberOfShares>1017308</reportingPersonBeneficiallyOwnedAggregateNumberOfShares>
      <classPercent>2.2</classPercent>
      <typeOfReportingPerson>BD</typeOfReportingPerson>
      <typeOfReportingPerson>OO</typeOfReportingPerson>
      <comments>With respect to Row 5 through Row 9 above, G1 Execution Services, LLC, SIG Brokerage, LP and Susquehanna Securities, LLC are affiliated independent broker-dealers which may be deemed a group.  For purposes of this report, we have indicated that each reporting person has sole voting and dispositive power with respect to the shares beneficially owned by it and that the reporting persons have shared voting and dispositive power with respect to all shares beneficially owned by all of the reporting persons.  Each of the reporting persons disclaims beneficial ownership of shares owned directly by another reporting person.</comments>
    </coverPageHeaderReportingPersonDetails>
    <coverPageHeaderReportingPersonDetails>

      <reportingPersonName>SIG Brokerage, LP</reportingPersonName>
      <citizenshipOrOrganization>DE</citizenshipOrOrganization>
      <reportingPersonBeneficiallyOwnedNumberOfShares>
        <soleVotingPower>2500</soleVotingPower>
        <sharedVotingPower>1017308</sharedVotingPower>
        <soleDispositivePower>2500</soleDispositivePower>
        <sharedDispositivePower>1017308</sharedDispositivePower>
      </reportingPersonBeneficiallyOwnedNumberOfShares>
      <reportingPersonBeneficiallyOwnedAggregateNumberOfShares>1017308</reportingPersonBeneficiallyOwnedAggregateNumberOfShares>
      <classPercent>2.2</classPercent>
      <typeOfReportingPerson>BD</typeOfReportingPerson>
      <typeOfReportingPerson>PN</typeOfReportingPerson>
      <comments>With respect to Row 5 through Row 9 above, G1 Execution Services, LLC, SIG Brokerage, LP and Susquehanna Securities, LLC are affiliated independent broker-dealers which may be deemed a group.  For purposes of this report, we have indicated that each reporting person has sole voting and dispositive power with respect to the shares beneficially owned by it and that the reporting persons have shared voting and dispositive power with respect to all shares beneficially owned by all of the reporting persons.  Each of the reporting persons disclaims beneficial ownership of shares owned directly by another reporting person.</comments>
    </coverPageHeaderReportingPersonDetails>
    <coverPageHeaderReportingPersonDetails>

      <reportingPersonName>Susquehanna Securities, LLC</reportingPersonName>
      <citizenshipOrOrganization>DE</citizenshipOrOrganization>
      <reportingPersonBeneficiallyOwnedNumberOfShares>
        <soleVotingPower>1009710</soleVotingPower>
        <sharedVotingPower>1017308</sharedVotingPower>
        <soleDispositivePower>1009710</soleDispositivePower>
        <sharedDispositivePower>1017308</sharedDispositivePower>
      </reportingPersonBeneficiallyOwnedNumberOfShares>
      <reportingPersonBeneficiallyOwnedAggregateNumberOfShares>1017308</reportingPersonBeneficiallyOwnedAggregateNumberOfShares>
      <classPercent>2.2</classPercent>
      <typeOfReportingPerson>BD</typeOfReportingPerson>
      <typeOfReportingPerson>OO</typeOfReportingPerson>
      <comments>With respect to Row 5 through Row 9 above, G1 Execution Services, LLC, SIG Brokerage, LP and Susquehanna Securities, LLC are affiliated independent broker-dealers which may be deemed a group.  For purposes of this report, we have indicated that each reporting person has sole voting and dispositive power with respect to the shares beneficially owned by it and that the reporting persons have shared voting and dispositive power with respect to all shares beneficially owned by all of the reporting persons.  Each of the reporting persons disclaims beneficial ownership of shares owned directly by another reporting person.</comments>
    </coverPageHeaderReportingPersonDetails>
    <items>
      <item2>
        <filingPersonName>This statement is filed by the entities listed below, who are collectively referred to herein as "Reporting Persons" with respect to the shares of Common Stock, $0.01 par value per share (the "Shares"), of Ambac Financial Group, Inc. (the "Company").

(i) G1 Execution Services, LLC
(ii) SIG Brokerage, LP
(iii) Susquehanna Securities, LLC</filingPersonName>
        <principalBusinessOfficeOrResidenceAddress>The address of the principal business office of G1 Execution Services, LLC is:

175 W. Jackson Blvd.
Suite 1700
Chicago, IL 60604

The address of the principal business office of each of SIG Brokerage, LP and Susquehanna Securities, LLC is:

401 E. City Avenue
Suite 220
Bala Cynwyd, PA 19004</principalBusinessOfficeOrResidenceAddress>
        <citizenship>Citizenship is set forth in Row 4 of the cover page for each Reporting Person hereto and is incorporated herein by reference for each such Reporting Person.</citizenship>
      </item2>
      <item3>
        <notApplicableFlag>N</notApplicableFlag>
        <typeOfPersonFiling>BD</typeOfPersonFiling>
      </item3>
      <item4>
        <amountBeneficiallyOwned>
The information required by this Item 4(a) is set forth in Row 9 of the cover page for each Reporting Person hereto and is incorporated herein by reference for each such Reporting Person.

The number of Shares reported as beneficially owned by Susquehanna Securities, LLC includes options to buy 735,400 Shares.

The Company's Quarterly Report on Form 10-Q, filed on August 7, 2025, indicates that there were 46,401,736 Shares outstanding as of August 5, 2025.
</amountBeneficiallyOwned>
        <classPercent>2.2%</classPercent>
        <numberOfSharesPersonHas>
          <solePowerOrDirectToVote>
The information required by this Item 4(c)(i) is set forth in Row 5 of the cover page for each Reporting Person hereto and is incorporated herein by reference for each such Reporting Person.</solePowerOrDirectToVote>
          <sharedPowerOrDirectToVote>
The information required by this Item 4(c)(ii) is set forth in Row 6 of the cover page for each Reporting Person hereto and is incorporated herein by reference for each such Reporting Person.</sharedPowerOrDirectToVote>
          <solePowerOrDirectToDispose>
The information required by this Item 4(c)(iii) is set forth in Row 7 of the cover page for each Reporting Person hereto and is incorporated herein by reference for each such Reporting Person.</solePowerOrDirectToDispose>
          <sharedPowerOrDirectToDispose>
The information required by this Item 4(c)(iv) is set forth in Row 8 of the cover page for each Reporting Person hereto and is incorporated herein by reference for each such Reporting Person. </sharedPowerOrDirectToDispose>
        </numberOfSharesPersonHas>
      </item4>
      <item5>
        <notApplicableFlag>N</notApplicableFlag>
        <classOwnership5PercentOrLess>Y</classOwnership5PercentOrLess>
      </item5>
      <item6>
        <notApplicableFlag>Y</notApplicableFlag>
      </item6>
      <item7>
        <notApplicableFlag>Y</notApplicableFlag>
      </item7>
      <item8>
        <notApplicableFlag>Y</notApplicableFlag>
      </item8>
      <item9>
        <notApplicableFlag>Y</notApplicableFlag>
      </item9>
      <item10>
        <notApplicableFlag>N</notApplicableFlag>
        <certifications>By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under ?? 240.14a-11.</certifications>
      </item10>
    </items>
    <exhibitInfo>	EXHIBIT INDEX

EXHIBIT					DESCRIPTION
________				________
99						Joint Filing Agreement</exhibitInfo>
    <signatureInformation>
      <reportingPersonName>G1 Execution Services, LLC</reportingPersonName>
      <signatureDetails>
        <signature>/s/ Brian Sopinsky</signature>
        <title>Brian Sopinsky, Secretary</title>
        <date>11/13/2025</date>
      </signatureDetails>
    </signatureInformation>
    <signatureInformation>
      <reportingPersonName>SIG Brokerage, LP</reportingPersonName>
      <signatureDetails>
        <signature>/s/ Brian Sopinsky</signature>
        <title>Brian Sopinsky, Assistant Secretary</title>
        <date>11/13/2025</date>
      </signatureDetails>
    </signatureInformation>
    <signatureInformation>
      <reportingPersonName>Susquehanna Securities, LLC</reportingPersonName>
      <signatureDetails>
        <signature>/s/ Brian Sopinsky</signature>
        <title>Brian Sopinsky, Secretary</title>
        <date>11/13/2025</date>
      </signatureDetails>
    </signatureInformation>
  </formData>

</edgarSubmission>
</XML>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99
<SEQUENCE>2
<FILENAME>ambc_sc13g-ex99.htm
<DESCRIPTION>JOINT FILING AGREEMENT
<TEXT>
<html><head></head><body style="font: 11pt Times New Roman, Times, Serif"><p style="text-align: end"><b>Exhibit 99</b></p><p style="text-align: center"><b>JOINT FILING AGREEMENT</b></p><p>This will confirm the agreement by and among the undersigned that the Schedule 13G filed with the Securities and Exchange Commission on or about the date hereof with respect to the beneficial ownership by the undersigned of the Common Stock, $0.01 par value per share of Ambac Financial Group, Inc., is being filed, and all amendments thereto will be filed, on behalf of each of the persons and entities named below in accordance with Rule 13d-1(k) under the Securities Exchange Act of 1934, as amended. This Agreement may be executed in two or more counterparts, each of which shall be deemed an original, but all of which together shall constitute one and the same instrument.</p><p>Dated as of November 13, 2025</p><p>G1 EXECUTION SERVICES, LLC</p><p style="margin: 0">By: <u>/s/ Brian Sopinsky</u></p><p style="margin: 0">Name: Brian Sopinsky</p><p style="margin: 0">Title: Secretary</p><p>SIG BROKERAGE, LP</p><p style="margin: 0">By: <u>/s/ Brian Sopinsky</u></p><p style="margin: 0">Name: Brian Sopinsky</p><p style="margin: 0">Title: Assistant Secretary</p><p>SUSQUEHANNA SECURITIES, LLC</p><p style="margin: 0">By: <u>/s/ Brian Sopinsky</u></p><p style="margin: 0">Name: Brian Sopinsky</p><p style="margin: 0">Title: Secretary</p><p>&nbsp;</p><div style="border-bottom: Black 1pt solid"></div></body></html>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
