Sources: Anthropic has been working on a plan to allow secondary stock sales in its IPO while also considering lockup periods longer than the standard 180 days (The Information)

Anthropic is preparing its IPO to permit secondary stock sales, allowing existing shareholders to sell shares after the offering, and is evaluating lock-up periods that exceed the typical 180-day restriction. The company’s strategy aims to provide greater liquidity for investors while managing post-IPO share stability.