Anthropic may require post-IPO employee share sales through 10b5-1 plans
The policy under consideration could make prearranged stock-sale plans mandatory for the entire workforce as Anthropic prepares for a potential IPO later this year.
Anthropic is considering requiring all employees to use 10b5-1 trading plans for stock sales, a stricter approach than the executive-focused use such plans typically have at public companies. The proposal would mean workers must schedule sales in advance, creating a record intended to show trades were not made while in possession of material non-public information. The move comes as Anthropic has confidentially submitted a draft Form S-1 to the SEC around June 1, 2026, positioning it for a potential public listing later this year. The company's reported Series H valuation was $965 billion post-money, with run-rate revenue exceeding $47 billion. Advisers working with Anthropic employees have already been recommending voluntary 10b5-1 plans because IPO processes often bring extended blackout periods, and the company may treat the entire workforce as potential insiders given the sensitivity of information tied to frontier AI model development.
- 10b5-1 trading plans: Prearranged stock-sale programs that set trades in advance to help address insider-trading concerns.
- Form S-1: The registration statement companies file with the SEC as part of the process to go public.
- blackout periods: Windows when insiders are restricted from trading company shares, often around sensitive corporate events.