X0609 4 2026-06-25 0 0002021728 Cerebras Systems Inc. CBRS 0001702410 Patel Yagnesh false C/O CEREBRAS SYSTEMS INC. 1237 E. ARQUES AVENUE SUNNYVALE CA 94085 0 1 0 0 Chief Accounting Officer 0 Class A Common Stock 2026-06-25 4 S 0 46 189.36 D 3954 D Class A Common Stock 2026-06-26 4 S 0 100 161.61 D 3854 D Class A Common Stock 2026-06-26 4 S 0 300 163.29 D 3554 D Class A Common Stock 2026-06-26 4 S 0 100 164.79 D 3454 D Class A Common Stock 2026-06-26 4 S 0 200 166.66 D 3254 D Class A Common Stock 2026-06-26 4 S 0 200 168.45 D 3054 D Class A Common Stock 2026-06-26 4 S 0 300 169.31 D 2754 D Class A Common Stock 2026-06-26 4 S 0 400 171.99 D 2354 D Class A Common Stock 2026-06-26 4 S 0 500 173.36 D 1854 D Class A Common Stock 2026-06-26 4 S 0 200 175.01 D 1654 D Class A Common Stock 2026-06-26 4 S 0 100 176.12 D 1554 D Class A Common Stock 2026-06-26 4 S 0 200 178.36 D 1354 D Class A Common Stock 2026-06-26 4 S 0 300 179.56 D 1054 D Class A Common Stock 2026-06-26 4 S 0 700 180.83 D 354 D Class A Common Stock 2026-06-26 4 S 0 354 182.05 D 0 D Class A Common Stock 2026-06-26 4 A 0 15000 0 A 15000 D The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $162.95 to $163.56, inclusive. Upon request by the staff of the Securities and Exchange commission, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price. The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $166.32 to $166.99, inclusive. Upon request by the staff of the Securities and Exchange commission, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price. The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $167.96 to $168.94, inclusive. Upon request by the staff of the Securities and Exchange commission, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price. The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $169.05 to $169.77, inclusive. Upon request by the staff of the Securities and Exchange commission, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price. The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $171.79 to $172.21, inclusive. Upon request by the staff of the Securities and Exchange commission, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price. The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $173.04 to $173.77, inclusive. Upon request by the staff of the Securities and Exchange commission, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price. The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $174.89 to $175.12, inclusive. Upon request by the staff of the Securities and Exchange commission, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price. The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $178.00 to $178.71, inclusive. Upon request by the staff of the Securities and Exchange commission, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price. The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $179.09 to $179.82, inclusive. Upon request by the staff of the Securities and Exchange commission, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price. The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $180.43 to $181.36, inclusive. Upon request by the staff of the Securities and Exchange commission, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price. The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $181.74 to $182.26, inclusive. Upon request by the staff of the Securities and Exchange commission, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price. Represents restricted stock units ("RSUs") that vest according to the terms of the applicable award agreement. Each RSU represents a contingent right to receive one share of the Issuer's Class A common stock. This Form 4 is the second of two Forms 4 being filed by the Reporting Person relating to transactions that occurred on June 25, 2026 and June 26, 2026 (the "Transaction Dates"). Because there are more than 30 rows associated with the Reporting Person's transactions that occurred on the Transaction Dates, and EDGAR will not allow for the entry of more than 30 rows on a single Form 4, this second Form 4 is being filed to report the transactions that were not included on the first Form 4. The two Forms 4 filed by the Reporting Person on the date hereof should be read together as one consolidated filing. /s/ Robert Mills, Attorney-in-fact 2026-06-29