X0609 4 2026-05-15 0002021728 Cerebras Systems Inc. CBRS 0001645076 Foundation Capital Management Co. VIII, L.L.C. false C/O FOUNDATION CAPITAL 550 HIGH STREET, 3RD FLOOR PALO ALTO CA 94301 false false true false 0001645077 Foundation Capital VIII, L.P. false C/O FOUNDATION CAPITAL 550 HIGH STREET, 3RD FLOOR PALO ALTO CA 94301 0 0 1 0 0001645178 Foundation Capital VIII Principals Fund, L.L.C. false C/O FOUNDATION CAPITAL 550 HIGH STREET, 3RD FLOOR PALO ALTO CA 94301 0 0 1 0 0001804257 Foundation Capital Management Co. LF II, L.L.C. false C/O FOUNDATION CAPITAL 550 HIGH STREET, 3RD FLOOR PALO ALTO CA 94301 0 0 1 0 0001804258 Foundation Capital Leadership Fund II, L.P. false C/O FOUNDATION CAPITAL 550 HIGH STREET, 3RD FLOOR PALO ALTO CA 94301 0 0 1 0 0 Series A Preferred Stock 2026-05-15 4 C 0 12322821 D Class B Common Stock 12322821 0 I By Foundation Capital VIII, L.P. Series A Preferred Stock 2026-05-15 4 C 0 265414 D Class B Common Stock 265414 0 I By Foundation Capital VIII Principals Fund, LLC Series B Preferred Stock 2026-05-15 4 C 0 1395341 D Class B Common Stock 1395341 0 I By Foundation Capital VIII, L.P. Series B Preferred Stock 2026-05-15 4 C 0 30053 D Class B Common Stock 30053 0 I By Foundation Capital VIII Principals Fund, LLC Series C Preferred Stock 2026-05-15 4 C 0 109409 D Class B Common Stock 109409 0 I By Foundation Capital VIII, L.P. Series C Preferred Stock 2026-05-15 4 C 0 2356 D Class B Common Stock 2356 0 I By Foundation Capital VIII Principals Fund, LLC Series D Preferred Stock 2026-05-15 4 C 0 30315 D Class B Common Stock 30315 0 I By Foundation Capital VIII, L.P. Series D Preferred Stock 2026-05-15 4 C 0 653 D Class B Common Stock 653 0 I By Foundation Capital VIII Principals Fund, LLC Series E Preferred Stock 2026-05-15 4 C 0 53419 D Class B Common Stock 53419 0 I By Foundation Capital VIII, L.P. Series E Preferred Stock 2026-05-15 4 C 0 1151 D Class B Common Stock 1151 0 I By Foundation Capital VIII Principals Fund, LLC Series E Preferred Stock 2026-05-15 4 C 0 1091411 D Class B Common Stock 1091411 0 I By Foundation Capital Leadership Fund II, L.P. Class B Common Stock 2026-05-15 4 C 0 13911305 A Class A Common Stock 13911305 13911305 I By Foundation Capital VIII, L.P. Class B Common Stock 2026-05-15 4 C 0 299627 A Class A Common Stock 299627 299627 I By Foundation Capital VIII Principals Fund, LLC Class B Common Stock 2026-05-15 4 C 0 1091411 A Class A Common Stock 1091411 1091411 I By Foundation Capital Leadership Fund II, L.P. Immediately prior to the closing of the Issuer's initial public offering, each share of the Issuer's redeemable convertible preferred stock automatically converted and was reclassified into one share of Class B Common Stock in an exempt transaction pursuant to Rule 16b-7. Each share of Class B common stock is convertible at any time at the option of the holder into one share of Class A common stock. These securities are owned by Foundation Capital VIII, L.P. ("FC8"). Foundation Capital Management Co. VIII, L.L.C. ("FCM8") serves as the sole general partner of FC8 and, as such, FCM8 possesses voting and dispositive power over the shares held by FC8, and may be deemed to have indirect beneficial ownership of the shares held by FC8. FCM8 disclaims beneficial ownership of such securities except to the extent of its pecuniary interest therein. These securities are owned by Foundation Capital VIII Principals Fund, L.L.C. ("FC8P"). FCM8 serves as the sole manager of FC8P and, as such, FCM8 possesses voting and dispositive power over the shares held by FC8P, and may be deemed to have indirect beneficial ownership of the shares held by FC8P. FCM8 disclaims beneficial ownership of such securities except to the extent of its pecuniary interest therein. These securities are owned by Foundation Capital Leadership Fund II, L.P. ("FCL2"). Foundation Capital Management Co,. LF II, L.L.C. ("FCMLF2") serves as the sole general partner of FCL2 and, as such, FCMLF2 possesses voting and dispositive power over the shares held by FCL2, and may be deemed to have indirect beneficial ownership of the shares held by FCL2. FCMLF2 disclaims beneficial ownership of such securities except to the extent of its pecuniary interest therein. Foundation Capital Management Co. VIII, L.L.C., By: /s/ Charles Moldow, Manager 2026-05-19 Foundation Capital VIII, L.P., By: Foundation Capital Management Co. VIII, L.L.C., its General Partner, By: /s/ Charles Moldow, Manager 2026-05-19 Foundation Capital VIII Principals Fund, L.L.C., By: Foundation Capital Management Co. VIII, L.L.C., its Manager, By: /s/ Charles Moldow, Manager 2026-05-19 Foundation Capital Management Co. LF II, L.L.C., By: /s/ Charles Moldow, Manager 2026-05-19 Foundation Capital Leadership Fund II, L.P., By: Foundation Capital Management Co. LF II, L.L.C., its General Partner, By: /s/ Charles Moldow, Manager 2026-05-19