Cerebras Systems Inc. 4

CEO Andrew D. Feldman exercised options into Class A-equivalent shares, sold about 245,059 Class A shares under a 10b5‑1 plan, and transferred additional shares to charitable and family trust vehicles in Cerebras Systems Inc. (CBRS).

On August 21, 2026, Cerebras Systems Inc. CEO and President Andrew D. Feldman exercised multiple vested stock options for a total of 237,559 shares of Class B Common Stock (at exercise prices of $5.02, $7.89, and $2.72), converted those Class B shares into 237,559 shares of Class A Common Stock, and then sold 245,059 Class A shares (in a series of Rule 10b5‑1 plan transactions) at weighted average prices ranging from approximately $196.20 to $210.21 per share, generating roughly $49–50 million in gross proceeds. In addition, he made a charitable gift (Form 4 code “G”) of 50,000 Class A Common shares on August 21, 2026 to a donor‑advised fund, and a separate journal transfer (“J”) of 120 Class A shares on August 24, 2026 to the Feldman Bravo Family Trust, while maintaining a substantial remaining direct and indirect equity stake in the company (including significant Class B holdings convertible into Class A).

Filing Facts

CIK

2021728

Ticker

CBRS

Form

4

Source Type

sec

Accession

0001628280-26-058961

Alert Tier

9