# Filing Detail

Form 10-Q - Quarterly report [Sections 13 or 15(d)]:
SEC Accession No. 0001628280-26-031393
Filing Date
2026-05-06
Accepted
2026-05-06 16:50:07
Documents
163
Period of Report
2026-03-31

Document Format Files

Seq | Description | Document | Type | Size
--- | --- | --- | --- | ---
1 | 10-Q | ambc-20260331.htm iXBRL | 10-Q | 2979118
2 | EX-10.1 | a02-038osgxex101x1q26x10q.htm | EX-10.1 | 1920450
3 | EX-10.2 | a02-038osgxex102x1q26x10q.htm | EX-10.2 | 27245
4 | EX-10.3 | a02-038osgxex103x1q26x10q.htm | EX-10.3 | 54701
5 | EX-31.1 | a02-038osgxex3111q26x10q.htm | EX-31.1 | 8901
6 | EX-31.2 | a02-038osgxex312x1q26x10q.htm | EX-31.2 | 8926
7 | EX-32.1 | a02-038osgxex321x1q26x10q.htm | EX-32.1 | 8091
13 |  | ambc-20260331_g1.jpg | GRAPHIC | 58349
14 |  | image_111a.jpg | GRAPHIC | 124
15 |  | image_115.jpg | GRAPHIC | 126
16 |  | image_118a.jpg | GRAPHIC | 148
17 |  | image_11a.jpg | GRAPHIC | 176
18 |  | image_120a.jpg | GRAPHIC | 131
19 |  | image_121a.jpg | GRAPHIC | 156
20 |  | image_129a.jpg | GRAPHIC | 98
21 |  | image_12a.jpg | GRAPHIC | 221
22 |  | image_132a.jpg | GRAPHIC | 171
23 |  | image_135a.jpg | GRAPHIC | 100
24 |  | image_136a.jpg | GRAPHIC | 167
25 |  | image_138a.jpg | GRAPHIC | 129
26 |  | image_139a.jpg | GRAPHIC | 116
27 |  | image_150a.jpg | GRAPHIC | 130
28 |  | image_155.jpg | GRAPHIC | 98
29 |  | image_156a.jpg | GRAPHIC | 124
30 |  | image_158a.jpg | GRAPHIC | 130
31 |  | image_160a.jpg | GRAPHIC | 98
32 |  | image_161a.jpg | GRAPHIC | 150
33 |  | image_162a.jpg | GRAPHIC | 131
34 |  | image_170a.jpg | GRAPHIC | 9167
35 |  | image_171a.jpg | GRAPHIC | 153
36 |  | image_173a.jpg | GRAPHIC | 127
37 |  | image_175a.jpg | GRAPHIC | 128
38 |  | image_179a.jpg | GRAPHIC | 15248
39 |  | image_185.jpg | GRAPHIC | 128
40 |  | image_18a.jpg | GRAPHIC | 257
41 |  | image_190a.jpg | GRAPHIC | 184
42 |  | image_198.jpg | GRAPHIC | 128
43 |  | image_1a.jpg | GRAPHIC | 92995
44 |  | image_201a.jpg | GRAPHIC | 98
45 |  | image_21a.jpg | GRAPHIC | 196
46 |  | image_27a.jpg | GRAPHIC | 202
47 |  | image_28a.jpg | GRAPHIC | 222
48 |  | image_2a.jpg | GRAPHIC | 118
49 |  | image_35a.jpg | GRAPHIC | 208
50 |  | image_36.jpg | GRAPHIC | 139
51 |  | image_37.jpg | GRAPHIC | 116
52 |  | image_38a.jpg | GRAPHIC | 112
53 |  | image_4a.jpg | GRAPHIC | 118
54 |  | image_54a.jpg | GRAPHIC | 104
55 |  | image_57a.jpg | GRAPHIC | 185
56 |  | image_59a.jpg | GRAPHIC | 307
57 |  | image_60a.jpg | GRAPHIC | 125
58 |  | image_62.jpg | GRAPHIC | 135
59 |  | image_64.jpg | GRAPHIC | 130
60 |  | image_67a.jpg | GRAPHIC | 156
61 |  | image_6a.jpg | GRAPHIC | 408
62 |  | image_84a.jpg | GRAPHIC | 146
63 |  | image_85a.jpg | GRAPHIC | 131
64 |  | image_88a.jpg | GRAPHIC | 106
65 |  | image_8a.jpg | GRAPHIC | 205
66 |  | image_93.jpg | GRAPHIC | 122
67 |  | image_96.jpg | GRAPHIC | 131
| Complete submission text file | 0001628280-26-031393.txt |  | 21690894

Data Files

Seq | Description | Document | Type | Size
--- | --- | --- | --- | ---
8 | XBRL TAXONOMY EXTENSION SCHEMA DOCUMENT | ambc-20260331.xsd | EX-101.SCH | 141185
9 | XBRL TAXONOMY EXTENSION CALCULATION LINKBASE DOCUMENT | ambc-20260331_cal.xml | EX-101.CAL | 79538
10 | XBRL TAXONOMY EXTENSION DEFINITION LINKBASE DOCUMENT | ambc-20260331_def.xml | EX-101.DEF | 1258574
11 | XBRL TAXONOMY EXTENSION LABEL LINKBASE DOCUMENT | ambc-20260331_lab.xml | EX-101.LAB | 1432274
12 | XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE DOCUMENT | ambc-20260331_pre.xml | EX-101.PRE | 1443913
167 | EXTRACTED XBRL INSTANCE DOCUMENT | ambc-20260331_htm.xml | XML | 3334502

Mailing Address 40 WALL STREET 55TH FLOOR NEW YORK NY 10005
Business Address 40 WALL STREET 55TH FLOOR NEW YORK NY 10005 2126587470
OCTAVE SPECIALTY GROUP INC (Filer) CIK: 0000874501 (see all company filings)

EIN.: 133621676 | State of Incorp.: DE | Fiscal Year End: 1231
Type: 10-Q | Act: 34 | File No.: 001-10777 | Film No.: 26949380
SIC: 6351 Surety Insurance
(CF Office: 02 Finance)