Ambac Financial Group Rebrands as Octave Specialty Group, Inc.

Core Viewpoint - Ambac Financial Group has rebranded as Octave Specialty Group, Inc., marking a significant transformation into a leading specialty insurance platform, with a new trading ticker symbol "NYSE: OSG" set to commence on November 20, 2025 [2][3]. Company Overview - The rebranding follows the successful divestiture of the legacy financial guarantee business, indicating a focused strategy on building and acquiring high-performing managing general agency (MGA) businesses across the U.S., U.K., and Bermuda [2][3]. - Octave Specialty Group aims to create a harmonized portfolio of niche insurance distribution and underwriting businesses, emphasizing operational excellence, disciplined growth, and innovation [6]. Brand Identity - The new brand identity includes a logo, visual system, and website that reflect the company's commitment to innovation, collaboration, and performance [4]. - The brand name "Octave" symbolizes the harmony of distinct notes, representing the integration of diverse yet connected high-performing specialty businesses to enhance long-term shareholder value [4][5]. Structural Changes - Cirrata Group has been rebranded as Octave Partners, serving as the company's acquisition division, while Beat Capital Partners is now known as Octave Ventures, its incubation division [7].