On September 30, Cerebras Systems fell 7.02% in regular trading, trading at $179.0/share, with turnover of $342 million. The sharp decline was triggered by a fresh insider selling disclosure that further eroded investor confidence.

According to a newly filed Form 144, executive Dhiraj Mallick plans to sell 396,000 shares of common stock valued at approximately $77.9 million. This latest filing adds to an already extensive pattern of insider disposals. CTO Sean Lie has cumulatively sold over 790,000 shares across at least seven transactions in the past three months, while CEO Andrew Feldman previously offloaded 244,657 shares worth tens of millions. The sustained and broadening insider selling campaign has become a dominant overhang on the stock.

Notably, Cerebras Systems significantly underperformed the broader semiconductor sector on the day. Micron Technology rose 1.36%, NVIDIA gained 1.02%, Intel climbed 2.82%, AMD added 0.83%, and Broadcom edged up 0.15%, indicating that company-specific selling pressure — rather than sector weakness — drove the decline.

(The above content is based on publicly available market information, generated by a program or algorithm, and is intended solely as a stock movement alert. It does not constitute investment advice or a basis for trading decisions.)