X0609 4 2026-06-29 0 0002021728 Cerebras Systems Inc. CBRS 0001593049 Benchmark Capital Management Co. VIII, L.L.C. false 2965 WOODSIDE ROAD WOODSIDE CA 94062 0 0 1 0 0001593052 Benchmark Capital Partners VIII, L.P. false 2965 WOODSIDE ROAD WOODSIDE CA 94062 0 0 1 0 0001597415 Benchmark Founders' Fund VIII, L.P. false 2965 WOODSIDE ROAD WOODSIDE CA 94062 0 0 1 0 0001597399 Benchmark Founders' Fund VIII-B, L.P. false 2965 WOODSIDE ROAD WOODSIDE CA 94062 0 0 1 0 0 Class A Common Stock 2026-06-29 4 C 0 2157802 0.00 A 2157802 I See Footnote Class A Common Stock 2026-06-29 4 J 0 2157802 0.00 D 0 I See Footnote Class B Common Stock 2026-06-29 4 C 0 2157802 0.00 D Class A Common Stock 2157802 12227545 I See Footnote Conversion of a derivative security in accordance with its terms. The shares are held by Benchmark Capital Partners VIII, L.P. ("BCP VIII"), as nominee for itself, Benchmark Founders' Fund VIII, L.P. ("BFF VIII") and Benchmark Founders' Fund VIII-B, L.P. ("BFF VIII-B"). Benchmark Capital Management Co. VIII, L.L.C. ("BCMC VIII"), the general partner of each of BCP VIII, BFF VIII and BFF VIII-B, may be deemed to have sole voting and dispositive power over such shares. Each entity disclaims the existence of a "group" and disclaims beneficial ownership of the securities, except to the extent of such entity's pecuniary interest in such securities. Represents a pro-rata, in-kind distribution by BCP VIII and its affiliated funds, not for additional consideration, to its partners, including BCMC VIII and its respective members and assignees. Each share of Class B Common Stock held by the Reporting Person will automatically convert into one share of Class A Common Stock upon the sale or transfer of such share of Class B Common Stock, subject to certain exceptions, and in certain other circumstances described in the Issuer's amended and restated certificate of incorporation. Each share of Class B Common Stock will also be convertible at any time at the option of the Reporting Person into one share of Class A Common Stock. /s/ An-Yen Hu by power of attorney for Benchmark Capital Management Co. VIII, L.L.C. 2026-07-01 /s/ An-Yen Hu by power of attorney for Benchmark Capital Management Co. VIII, L.L.C., the General Partner of Benchmark Capital Partners VIII, L.P. 2026-07-01 /s/ An-Yen Hu by power of attorney for Benchmark Capital Management Co. VIII, L.L.C., the General Partner of Benchmark Founders' Fund VIII, L.P. 2026-07-01 /s/ An-Yen Hu by power of attorney for Benchmark Capital Management Co. VIII, L.L.C., the General Partner of Benchmark Founders' Fund VIII-B, L.P. 2026-07-01