X0609 4 2026-08-24 1 0002021728 Cerebras Systems Inc. CBRS 0002105288 Benchmark AI Infrastructure Management Co., L.L.C. false 2965 WOODSIDE ROAD WOODSIDE CA 94062 0 0 1 0 0002105287 Benchmark AI Infrastructure Fund, L.P. false 2965 WOODSIDE ROAD WOODSIDE CA 94062 0 0 1 0 0002105283 Benchmark AI Infrastructure Fund B, L.P. false 2965 WOODSIDE ROAD WOODSIDE CA 94062 0 0 1 0 1 Class B Common Stock Class A Common Stock 2527646 2527646 I See Footnote The shares are held by Benchmark AI Infrastructure Fund, L.P. ("AI Infrastructure"), as nominee for itself and Benchmark AI Infrastructure Fund B, L.P. ("AI Infrastructure B"). Benchmark AI Infrastructure Management Co., L.L.C. ("AI Infrastructure MC"), the general partner of each of AI Infrastructure and AI Infrastructure 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. 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. This report is one of two reports, each on a separate Form 4, but relating to the same holdings being filed by entities affiliated with Benchmark. /s/ An-Yen Hu, Managing Member of Benchmark AI Infrastructure Management Co., L.L.C. 2026-08-26 /s/ An-Yen Hu, Managing Member of Benchmark AI Infrastructure Management Co., L.L.C., the General Partner of Benchmark AI Infrastructure Fund, L.P. 2026-08-26 /s/ An-Yen Hu, Managing Member of Benchmark AI Infrastructure Management Co., L.L.C., the General Partner of Benchmark AI Infrastructure Fund B, L.P. 2026-08-26