Anthropic effects 1-for-1,000 reverse stock split of Class T shares

Anthropic: Anthropic is a San Francisco-based AI research company founded in 2021 that develops the Claude family of large language models with an emphasis on safety and alignment. It operates as a public benefit corporation and maintains a distinctive governance structure that includes a Long-Term Benefit Trust holding special Class T common stock with board election rights. The company effected a 1-for-1,000 reverse stock split specifically on its authorized and issued shares of Class T common stock, adjusting the structure of the shares tied to its independent oversight mechanism ahead of planned public market activities. IPO Preparation: Anthropic has confidentially filed for an IPO and is advancing toward a Nasdaq listing targeted for mid-November 2026. Governance Structure: Anthropic's Long-Term Benefit Trust holds Class T shares that grant it authority over board appointments to prioritize long-term public benefit considerations alongside shareholder interests. Recent Product Updates: In late September and early October 2026, Anthropic released updated Claude models including Opus 5.5, Sonnet 5.5, and Haiku 5.5 with improvements in capability and efficiency.