Anthropic insiders may sell up to 10% of locked-up shares on IPO day

Anthropic’s IPO paperwork reportedly includes an unusual perk for some insiders. Certain shareholders may be able to sell up to 10% of their locked-up shares on the very first day of trading. What the filing reportedly allows The AI company behind the Claude models submitted a draft Form S-1 registration to the SEC on June 1, 2026. An S-1 is the formal document a company files before selling shares to the public. According to reports on the filing, some insiders could unload up to 10% of their locked-up holdings when the stock debuts. That provision reportedly comes paired with longer-than-usual lockup agreements on the remaining shares. A lockup is the waiting period after an IPO during which early investors and employees can’t sell. It exists to stop a flood of insider selling from swamping a freshly listed stock. The approach marks a departure from the playbook used by other high-profile tech listings, including SpaceX, according to the research findings. The timeline and the price tag The draft filing is only the opening act. A public version of the S-1 is expected between October 23 and 26, 2026. From there, the IPO roadshow is slated to begin around November 9. Trading could ...