Cerebras Systems Inc. officer Sean Lie filed a Form 144 notice on October 27, 2026, proposing the sale of 60,000 shares of common stock on NASDAQ under Rule 144 of the Securities Act of 1933.

Key Highlights

  • Proposed sale: Sean Lie, listed as an officer of Cerebras Systems Inc., filed notice to sell 60,000 shares of common stock with an aggregate market value of $6,502,200.00.
  • Acquisition sources: The shares consist of 32,023 shares acquired via exercise of stock options on October 27, 2026, and 27,977 shares acquired through Performance Stock Units originally dated April 7, 2016.
  • Broker: The proposed sale is to be executed through Morgan Stanley Smith Barney LLC Executive Financial Services, 1 New York Plaza, 8th Floor, New York, NY 10004.
  • Shares outstanding: According to the filing, 112,247,109 shares of common stock were outstanding at the time of the notice.
  • Trading plan date: The filing indicates a Rule 10b5-1 plan adoption date of May 20, 2026.
  • Prior three-month sales: The filing discloses multiple sales of common stock by Sean Lie and associated entities totaling more than one million shares between August 18, 2026, and September 25, 2026, with gross proceeds reported across those transactions.

Sean Lie's Proposed Rule 144 Sale and Prior Sales Activity at Cerebras Systems

According to the Form 144 notice filed with the SEC on October 27, 2026, Sean Lie, an officer of Cerebras Systems Inc. (NASDAQ:CBRS), proposed to sell 60,000 shares of the company's common stock. The aggregate market value of the proposed sale is listed as $6,502,200.00. The filing identifies the approximate date of sale as October 27, 2026, on NASDAQ. Cerebras Systems is headquartered at 1237 E. Arques Avenue, Sunnyvale, California 94085.

The filing discloses that the 60,000 shares to be sold were acquired through two separate transactions: 32,023 shares obtained via exercise of stock options from the issuer on October 27, 2026, paid in cash, and 27,977 shares acquired as Performance Stock Units from the issuer, with an original acquisition date of April 7, 2016. The filer indicated reliance on a Rule 10b5-1 written trading plan adopted on May 20, 2026.

As required by Form 144, the filing also discloses sales of Cerebras common stock during the prior three months. Those disclosures include sales attributed to "10b5-1 Sales for SEAN LIE" and to "Grounded Love Fund," both sharing the same Sunnyvale, California address. Reported transactions include 710,247 shares sold on August 20, 2026, with gross proceeds of $147,629,203.38; 213,074 shares sold on August 21, 2026, with gross proceeds of $42,428,338.94 under Grounded Love Fund; and 120,000 shares sold on September 25, 2026, with gross proceeds of $25,076,334.00, among others. Additional sales on August 18, August 21, August 24, September 4, and September 8, 2026, are also listed with their respective share counts and gross proceeds.

What Was Disclosed

Officer Sean Lie filed a Form 144 notice proposing to sell 60,000 shares of Cerebras Systems Inc. common stock valued at $6,502,200.00, acquired through stock option exercise and Performance Stock Units, with the sale to be executed through Morgan Stanley Smith Barney LLC on NASDAQ.