OCTAVE SPECIALTY GROUP INC (OSG)
Octave Specialty Group, Inc. functions as a financial services holding company, organizing its operations into two distinct divisions. Its Specialty Property and Casualty Insurance segment delivers specialized program insurance, primarily focusing on coverage for commercial and personal liability exposures. The second division, Insurance Distribution, offers a broad spectrum of services for distributing specialty property and casualty insurance, which includes roles such as managing general agents, underwriters, and insurance brokers, alongside other related distribution and underwriting ventures. Established in 1971, the company, with its corporate headquarters located in New York, New York, rebranded from its former name, Ambac Financial Group, Inc., to Octave Specialty Group, Inc. in November 2025.
Sector: Surety Insurance
Industry: Insurance - Specialty
Octave Specialty Group, Inc.
| Date | Open | High | Low | Close | Volume |
|---|---|---|---|---|---|
based on 45.05M shares outstanding
USOctave Specialty Group, Inc. functions as a financial services holding company, organizing its operations into two distinct divisions.
Its Specialty Property and Casualty Insurance segment delivers specialized program insurance, primarily focusing on coverage for commercial and personal liability exposures. The second division, Insurance Distribution, offers a broad spectrum of services for distributing specialty property and casualty insurance, which includes roles such as managing general agents, underwriters, and insurance brokers, alongside other related distribution and underwriting ventures. Established in 1971, the company, with its corporate headquarters located in New York, New York, rebranded from its former name, Ambac Financial Group, Inc., to Octave Specialty Group, Inc. in November 2025.
Leadership
Claude LeBlanc
President, Chief Executive Officer & Director
David Trick
Executive Vice President, Chief Financial Officer & Treasurer
Lawrence F. Metz
Senior Managing Director & General Counsel
R. Sharon Smith
Executive Vice President and Group Chief Operating Officer
Employees
380
Country
US
Sector
Financial Services
Website
octavegroup.com
| Insider | Title | Type | Shares | Value | Date |
|---|---|---|---|---|---|
 Trick David | Exec VP, CFO & Treasurer | Option Exercise | 63.5K | -- | Oct 3, 2026 |
 LeBlanc Claude | Chief Executive Officer | Option Exercise | 15.2K | -- | Oct 3, 2026 |
| LeBlanc Claude | Chief Executive Officer | Automatic Sell | 8.4K | $38.7K | Oct 3, 2026 |
| LeBlanc Claude | Chief Executive Officer | Option Exercise | 11.6K | -- | Oct 3, 2026 |
| LeBlanc Claude | Chief Executive Officer | Automatic Sell | 11.6K | $53.5K | Oct 3, 2026 |
 Smith R Sharon | Exec VP & Group COO | Option Exercise | 2.5K | -- | Oct 3, 2026 |
| Name | Shares | % | Source |
|---|---|---|---|
Theodore Walker Cheng-De King 2 · may incl. warrants· filed Apr 2024 | 301.7M | 6.3% as filed | 13G |
BlackRock, Inc. | 4.6M | 10.1% | 13F |
BlackRock, Inc. · also on 13F· may incl. warrants· filed Oct 2025 | 3.5M | 7.8% | 13G |
Western Standard LLC | 2.2M | 5.0% | 13F |
Western Standard LLC · also on 13F· may incl. warrants· filed May 2026 | 2.2M | 5.0% | 13G |
Dimensional Fund Advisors LP · also on 13F· may incl. warrants· filed Oct 2025 | 2.1M | 4.8% | 13G |
VANGUARD CAPITAL MANAGEMENT LLC | 2.0M | 4.4% | 13F |
PRESCOTT GROUP CAPITAL MANAGEMENT, L.L.C. | 1.6M | 3.7% | 13F |
THIRD AVENUE MANAGEMENT LLC | 1.3M | 3.0% | 13F |
Bain Capital Credit, LP | 1.1M | 2.5% | 13F |
Insiders
- Trick DavidExec VP, CFO & Treasurer
- LeBlanc ClaudeChief Executive Officer
- Smith R SharonExec VP & Group COO
- PRICE MICHAEL DDirector
- HAFT IAN DAVIDDirector
- IGLESIAS LISA GDirector
- LAMMTENNANT JOAN MDirector
- Matus Kristi AnnDirector
- Stein Jeffrey ScottDirector
- METZ LAWRENCE F.*See Remarks for full title
based on 45.05M shares outstanding
US30d Avg
445.58K
60d Avg
510.09K
90d Avg
492.52K