Every Form 4 that Cerebras Systems (CBRS) has filed with the SEC in the last 12 months is listed below, newest first, and each one links through to the document itself with the summary and the scores our analysis gives it.
A Form 4 covers the transactions officers, directors and large holders report, so if you follow CBRS and want that one kind of document rather than the whole filing history, this is the page to keep. The company's other filings, of every form, are on the full CBRS filings page.
Cerebras Systems Inc. director‑affiliated funds reported large share conversions tied to the company’s IPO structure. Entities associated with Steven Vassallo converted multiple series of redeemable convertible preferred stock into 15,302,343 shares of Class B common stock in an exempt transaction under Rule 16b‑7, then recorded a related Class B to Class A conversion right. Following these transactions, Foundation Leadership Fund, Foundation Capital VIII Principals, and Foundation Capital VIII together hold 15,302,343 shares of Class B common stock indirectly for Mr. Vassallo, who disclaims beneficial ownership beyond his economic interest.
Cerebras Systems Inc. Chief Financial Officer Robert Patrick Komin Jr. reported internal equity restructuring transactions involving Class A and Class B common stock ahead of the company’s initial public offering. All entries use code J, which indicates other acquisitions or dispositions rather than open‑market buying or selling.
The filing shows 175,000 shares of Class A common stock and 854,153 additional Class A shares moved into positions that were reclassified into Class B common stock in exempt transactions under Rule 16b‑7. Each share of Class B common stock is convertible at any time into one share of Class A common stock.
The report also updates a stock option for 18,248 shares at an exercise price of $5.48 per share, which will be fully vested on March 11, 2028, and references 2,094,802 shares affected by restructuring overall. These moves reflect structural adjustments to Komin’s holdings, not cash purchases or sales in the market.
Cerebras Systems Inc. reported a restructuring transaction by director Elena A. Donio involving 33,701 shares. Immediately before the company’s initial public offering, each of her 33,701 shares of Class A common stock, including shares underlying RSU and option awards, was reclassified into 33,701 shares of Class B common stock in an exempt transaction under Rule 16b-7. Following the transaction, she held 0 shares of Class A common stock directly and 33,701 shares of Class B common stock, which are convertible at any time into an equal number of Class A shares.
Cerebras Systems director Paul R. Auvil III reported an internal share reclassification tied to the company’s initial public offering. On May 15, 2026, 203,750 shares of Class A common stock were moved to Class B common stock in an exempt restructuring transaction coded “J.”
After the change, Auvil held 203,750 shares of Class B common stock, each convertible at any time into one share of Class A common stock. The footnote explains that all Class A shares he beneficially owned, including those underlying RSU and option awards, were reclassified under Rule 16b-7, indicating a structural adjustment rather than an open‑market trade.
Cerebras Systems Inc. Chief Accounting Officer Yagnesh Patel reported routine share movements related to equity compensation and the company’s initial public offering structure. On May 13, 2026, 19,083 shares of Class A common stock were withheld at $185.00 per share to satisfy tax liabilities on vesting restricted stock units, which the company notes was not a market sale.
On May 15, 2026, 130,917 shares of Class A common stock beneficially owned by Patel, including shares underlying RSU and option awards, were reclassified into 130,917 shares of Class B common stock in an exempt transaction under Rule 16b-7. Following these changes, Patel holds 130,917 shares of Class B common stock, each convertible at any time into one share of Class A common stock.
Cerebras Systems Inc. Chief Technology Officer and 10% owner Sean Lie reported internal equity restructuring and tax-related share withholding. On May 13, 2026, 96,127 shares of Class A common stock were withheld at $185.00 per share to cover tax liability on vesting of restricted stock units, which the filing states was not a market sale.
On May 15, 2026, the filing shows multiple "J" code transactions reflecting reclassification of Lie’s holdings so that Class A common stock and related awards were converted into Class B common stock in an exempt transaction under Rule 16b-7, in connection with the company’s initial public offering. Following these changes, Lie holds 8,209,731 shares of Class B common stock directly and 180,600 shares indirectly through a spouse, plus several vested stock options over Class B common stock.