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Foundation Capital Management Co. VIII, L.L.C.

Disclosed activity across 2 companies

Tapewire entity
19980
SEC CIK
0001645076

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Reported relationships

Latest disclosed role at each company.

No relationships currently tracked through insider filings.

Disclosed balances

About these balances

Latest available filing per company, not a reconstructed current portfolio. Matching sequences show the last reported balance with all source rows expandable; grouping alone does not establish account ownership. Do not add unresolved positions together. Filings may omit unchanged positions, and amendments may correct only part of an older disclosure. Jointly reported shares are not necessarily this owner's personal holdings.

No balances currently tracked through insider filings.

Past disclosures · reporting ended (2)

No longer tracked through insider filings. These historical balances do not imply present ownership or a zero position.

Section 16 reporting ended · disclosed 2026-08-25. Current position is not established by this disclosure.

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Class A Common StockSEC Table I · non-derivativeIndirectBy Foundation Capital VIII, L.P.0 Last balance in matching sequence After 2026-08-21 transaction · row 4 Source-order balances reconcile. Account continuity and personal attribution are not independently verified.
2 source rows

Row 1 · 2026-08-21 · Conversion · Acquired 1,112,904 · Balance 1,112,904

F1: Each share of Class B Common Stock was converted into one share of Class A Common Stock for no additional consideration.

F2: These securities are held 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.

Row 4 · 2026-08-21 · Other · Disposed 1,112,904 · Balance 0

F5: Represents a pro rata, in-kind distribution, and not a purchase or sale of securities, by FC8 to its general partner and limited partners without additional consideration.

F2: These securities are held 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.

Class A Common StockSEC Table I · non-derivativeIndirectBy Foundation Capital VIII Principals Fund, L.L.C.0 Last balance in matching sequence After 2026-08-21 transaction · row 5 Source-order balances reconcile. Account continuity and personal attribution are not independently verified.
2 source rows

Row 2 · 2026-08-21 · Conversion · Acquired 23,970 · Balance 23,970

F1: Each share of Class B Common Stock was converted into one share of Class A Common Stock for no additional consideration.

F3: These securities are held 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.

Row 5 · 2026-08-21 · Other · Disposed 23,970 · Balance 0

F6: Represents a pro rata, in-kind distribution, and not a purchase or sale of securities, by FC8P to its general partner and limited partners without additional consideration.

F3: These securities are held 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.

Class A Common StockSEC Table I · non-derivativeIndirectBy Foundation Capital Leadership Fund II, L.P.0 Last balance in matching sequence After 2026-08-21 transaction · row 6 Source-order balances reconcile. Account continuity and personal attribution are not independently verified.
2 source rows

Row 3 · 2026-08-21 · Conversion · Acquired 87,313 · Balance 87,313

F1: Each share of Class B Common Stock was converted into one share of Class A Common Stock for no additional consideration.

F4: These securities are held by Foundation Capital Leadership Fund II, L.P. ("FCLF2"). Foundation Capital Management Co,. LF II, L.L.C. ("FCMLF2") serves as the sole general partner of FCLF2 and, as such, FCMLF2 possesses voting and dispositive power over the shares held by FCLF2, and may be deemed to have indirect beneficial ownership of the shares held by FCLF2. FCMLF2 disclaims beneficial ownership of such securities except to the extent of its pecuniary interest therein.

Row 6 · 2026-08-21 · Other · Disposed 87,313 · Balance 0

F7: Represents a pro rata, in-kind distribution, and not a purchase or sale of securities, by FCLF2 to its general partner and limited partners without additional consideration.

F4: These securities are held by Foundation Capital Leadership Fund II, L.P. ("FCLF2"). Foundation Capital Management Co,. LF II, L.L.C. ("FCMLF2") serves as the sole general partner of FCLF2 and, as such, FCMLF2 possesses voting and dispositive power over the shares held by FCLF2, and may be deemed to have indirect beneficial ownership of the shares held by FCLF2. FCMLF2 disclaims beneficial ownership of such securities except to the extent of its pecuniary interest therein.

Class A Common StockSEC Table I · non-derivativeIndirectBy Foundation Capital Management Co. VIII, L.L.C.0 Last balance in matching sequence After 2026-08-21 transaction · row 8 Source-order balances reconcile. Account continuity and personal attribution are not independently verified.
2 source rows

Row 7 · 2026-08-21 · Other · Acquired 287,932 · Balance 287,932

F8: Represents receipt of shares in the distributions in kind described in footnotes (5) and (6).

F9: These securities are held by FCM8. FCM8 disclaims beneficial ownership of such securities except to the extent of its pecuniary interest therein.

Row 8 · 2026-08-21 · Other · Disposed 287,932 · Balance 0

F10: Represents a pro rata, in-kind distribution, and not a purchase or sale of securities, by FCM8 to its members without additional consideration.

F9: These securities are held by FCM8. FCM8 disclaims beneficial ownership of such securities except to the extent of its pecuniary interest therein.

Class A Common StockSEC Table I · non-derivativeIndirectBy Foundation Capital Management Co. LF II, L.L.C.0 Last balance in matching sequence After 2026-08-21 transaction · row 10 Source-order balances reconcile. Account continuity and personal attribution are not independently verified.
2 source rows

Row 9 · 2026-08-21 · Other · Acquired 18,155 · Balance 18,155

F11: Represents receipt of shares in the distribution in kind described in footnote (7).

F12: These securities are held by FCMLF2. FCMLF2 disclaims beneficial ownership of such securities except to the extent of its pecuniary interest therein.

Row 10 · 2026-08-21 · Other · Disposed 18,155 · Balance 0

F13: Represents a pro rata, in-kind distribution, and not a purchase or sale of securities, by FCMLF2 to its members without additional consideration.

F12: These securities are held by FCMLF2. FCMLF2 disclaims beneficial ownership of such securities except to the extent of its pecuniary interest therein.

Class B Common StockSEC Table II · derivative / convertible securityIndirectBy Foundation Capital VIII, L.P.9,320,575 Reported balance After 2026-08-21 transaction · row 11 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 11 · 2026-08-21 · Conversion · Disposed 1,112,904 · Balance 9,320,575

F1: Each share of Class B Common Stock was converted into one share of Class A Common Stock for no additional consideration.

F14: Each share of Class B Common Stock is convertible into one share of Class A Common Stock at any time at the option of the holder and does not expire.

F2: These securities are held 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.

Class B Common StockSEC Table II · derivative / convertible securityIndirectBy Foundation Capital VIII Principals Fund, LLC200,751 Reported balance After 2026-08-21 transaction · row 12 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 12 · 2026-08-21 · Conversion · Disposed 23,970 · Balance 200,751

F1: Each share of Class B Common Stock was converted into one share of Class A Common Stock for no additional consideration.

F14: Each share of Class B Common Stock is convertible into one share of Class A Common Stock at any time at the option of the holder and does not expire.

F3: These securities are held 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.

Class B Common StockSEC Table II · derivative / convertible securityIndirectBy Foundation Capital Leadership Fund II, L.P.731,246 Reported balance After 2026-08-21 transaction · row 13 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 13 · 2026-08-21 · Conversion · Disposed 87,313 · Balance 731,246

F1: Each share of Class B Common Stock was converted into one share of Class A Common Stock for no additional consideration.

F14: Each share of Class B Common Stock is convertible into one share of Class A Common Stock at any time at the option of the holder and does not expire.

F4: These securities are held by Foundation Capital Leadership Fund II, L.P. ("FCLF2"). Foundation Capital Management Co,. LF II, L.L.C. ("FCMLF2") serves as the sole general partner of FCLF2 and, as such, FCMLF2 possesses voting and dispositive power over the shares held by FCLF2, and may be deemed to have indirect beneficial ownership of the shares held by FCLF2. FCMLF2 disclaims beneficial ownership of such securities except to the extent of its pecuniary interest therein.

Filing footnotes · ownership attribution and instrument terms

F1: Each share of Class B Common Stock was converted into one share of Class A Common Stock for no additional consideration.

F2: These securities are held 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.

F3: These securities are held 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.

F4: These securities are held by Foundation Capital Leadership Fund II, L.P. ("FCLF2"). Foundation Capital Management Co,. LF II, L.L.C. ("FCMLF2") serves as the sole general partner of FCLF2 and, as such, FCMLF2 possesses voting and dispositive power over the shares held by FCLF2, and may be deemed to have indirect beneficial ownership of the shares held by FCLF2. FCMLF2 disclaims beneficial ownership of such securities except to the extent of its pecuniary interest therein.

F5: Represents a pro rata, in-kind distribution, and not a purchase or sale of securities, by FC8 to its general partner and limited partners without additional consideration.

F6: Represents a pro rata, in-kind distribution, and not a purchase or sale of securities, by FC8P to its general partner and limited partners without additional consideration.

F7: Represents a pro rata, in-kind distribution, and not a purchase or sale of securities, by FCLF2 to its general partner and limited partners without additional consideration.

F8: Represents receipt of shares in the distributions in kind described in footnotes (5) and (6).

F9: These securities are held by FCM8. FCM8 disclaims beneficial ownership of such securities except to the extent of its pecuniary interest therein.

F10: Represents a pro rata, in-kind distribution, and not a purchase or sale of securities, by FCM8 to its members without additional consideration.

F11: Represents receipt of shares in the distribution in kind described in footnote (7).

F12: These securities are held by FCMLF2. FCMLF2 disclaims beneficial ownership of such securities except to the extent of its pecuniary interest therein.

F13: Represents a pro rata, in-kind distribution, and not a purchase or sale of securities, by FCMLF2 to its members without additional consideration.

F14: Each share of Class B Common Stock is convertible into one share of Class A Common Stock at any time at the option of the holder and does not expire.

Section 16 reporting ended · disclosed 2024-12-09. Current position is not established by this disclosure.

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Common StockSEC Table I · non-derivativeDirect0 Reported balance After 2024-09-27 transaction · row 1 Joint disclosure: continuity of the reported position is unresolved; see ownership footnotes.
1 source row

Row 1 · 2024-09-27 · Other · Disposed 1,341,357 · Balance 0

F1: On September 27, 2024, RE Closing Buyer Corp. ("Parent") acquired the Issuer pursuant to that certain Agreement and Plan of Merger (the "Merger Agreement"), dated as of March 28, 2024, by and among the Issuer, Parent, and RE Closing Merger Sub Inc., a wholly-owned subsidiary of Parent ("Merger Sub"). In accordance with the Merger Agreement, Merger Sub merged with and into the Issuer, with the Issuer surviving such merger as a wholly-owned subsidiary of Parent (the "Merger").

F2: As of the effective time of the Merger (the "Effective Time"), pursuant to the Merger Agreement, each share of the Issuer's common stock outstanding immediately prior to the Effective Time was automatically cancelled and converted into the right to receive $6.29 in cash (the "Merger Consideration").

F3: 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.

Common StockSEC Table I · non-derivativeIndirectBy Foundation Capital VIII Principals Fund, L.L.C.0 Reported balance After 2024-09-27 transaction · row 2 Joint disclosure: continuity of the reported position is unresolved; see ownership footnotes.
1 source row

Row 2 · 2024-09-27 · Other · Disposed 28,891 · Balance 0

F1: On September 27, 2024, RE Closing Buyer Corp. ("Parent") acquired the Issuer pursuant to that certain Agreement and Plan of Merger (the "Merger Agreement"), dated as of March 28, 2024, by and among the Issuer, Parent, and RE Closing Merger Sub Inc., a wholly-owned subsidiary of Parent ("Merger Sub"). In accordance with the Merger Agreement, Merger Sub merged with and into the Issuer, with the Issuer surviving such merger as a wholly-owned subsidiary of Parent (the "Merger").

F2: As of the effective time of the Merger (the "Effective Time"), pursuant to the Merger Agreement, each share of the Issuer's common stock outstanding immediately prior to the Effective Time was automatically cancelled and converted into the right to receive $6.29 in cash (the "Merger Consideration").

F4: 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.

Common StockSEC Table I · non-derivativeIndirectBy Foundation Capital Leadership Fund II, L.P.0 Reported balance After 2024-09-27 transaction · row 3 Joint disclosure: continuity of the reported position is unresolved; see ownership footnotes.
1 source row

Row 3 · 2024-09-27 · Other · Disposed 420,838 · Balance 0

F1: On September 27, 2024, RE Closing Buyer Corp. ("Parent") acquired the Issuer pursuant to that certain Agreement and Plan of Merger (the "Merger Agreement"), dated as of March 28, 2024, by and among the Issuer, Parent, and RE Closing Merger Sub Inc., a wholly-owned subsidiary of Parent ("Merger Sub"). In accordance with the Merger Agreement, Merger Sub merged with and into the Issuer, with the Issuer surviving such merger as a wholly-owned subsidiary of Parent (the "Merger").

F2: As of the effective time of the Merger (the "Effective Time"), pursuant to the Merger Agreement, each share of the Issuer's common stock outstanding immediately prior to the Effective Time was automatically cancelled and converted into the right to receive $6.29 in cash (the "Merger Consideration").

F5: 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.

Filing footnotes · ownership attribution and instrument terms

F1: On September 27, 2024, RE Closing Buyer Corp. ("Parent") acquired the Issuer pursuant to that certain Agreement and Plan of Merger (the "Merger Agreement"), dated as of March 28, 2024, by and among the Issuer, Parent, and RE Closing Merger Sub Inc., a wholly-owned subsidiary of Parent ("Merger Sub"). In accordance with the Merger Agreement, Merger Sub merged with and into the Issuer, with the Issuer surviving such merger as a wholly-owned subsidiary of Parent (the "Merger").

F2: As of the effective time of the Merger (the "Effective Time"), pursuant to the Merger Agreement, each share of the Issuer's common stock outstanding immediately prior to the Effective Time was automatically cancelled and converted into the right to receive $6.29 in cash (the "Merger Consideration").

F3: 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.

F4: 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.

F5: 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.

Transaction history

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Purchases/sales include open-market and private transactions. Plan disclosure applies to the filing; individual rows may differ. “Not disclosed” is not “unplanned.”

The cutoff filters transaction history only. Company summaries and owner relationships show the latest available disclosures. Parser corrections can improve historical records.

Transaction dateCompanyActivity / securityShares / unitsReported priceReported valueDetails
August 21, 2026 Filed Aug 25, 2026 23:33 UTC Cerebras Systems Inc. CBRS · Entity 3072 ConversionClass B Common Stock · Derivative 87,313 Not disclosed Not disclosed
Disclosure

SEC source: 0001231919-26-001100 · form4-08252026_110836.xml · derivative · entry 13

Foundation Capital Management Co. VIII, L.L.C. · CIK 0001645076 · 10% owner

Foundation Capital VIII, L.P. · CIK 0001645077 · 10% owner

Foundation Capital VIII Principals Fund, L.L.C. · CIK 0001645178 · 10% owner

Foundation Capital Management Co. LF II, L.L.C. · CIK 0001804257 · 10% owner

Foundation Capital Leadership Fund II, L.P. · CIK 0001804258 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · By Foundation Capital Leadership Fund II, L.P.

Disclosed balance after: 731,246

Underlying: Class A Common Stock · 87,313 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each share of Class B Common Stock was converted into one share of Class A Common Stock for no additional consideration.

F1 · price: Each share of Class B Common Stock was converted into one share of Class A Common Stock for no additional consideration.

F14 · derivative.exercise_date: Each share of Class B Common Stock is convertible into one share of Class A Common Stock at any time at the option of the holder and does not expire.

F14 · derivative.expiration_date: Each share of Class B Common Stock is convertible into one share of Class A Common Stock at any time at the option of the holder and does not expire.

F4 · ownership.nature: These securities are held by Foundation Capital Leadership Fund II, L.P. ("FCLF2"). Foundation Capital Management Co,. LF II, L.L.C. ("FCMLF2") serves as the sole general partner of FCLF2 and, as such, FCMLF2 possesses voting and dispositive power over the shares held by FCLF2, and may be deemed to have indirect beneficial ownership of the shares held by FCLF2. FCMLF2 disclaims beneficial ownership of such securities except to the extent of its pecuniary interest therein.

Read SEC document
August 21, 2026 Filed Aug 25, 2026 23:33 UTC Cerebras Systems Inc. CBRS · Entity 3072 ConversionClass B Common Stock · Derivative 23,970 Not disclosed Not disclosed
Disclosure

SEC source: 0001231919-26-001100 · form4-08252026_110836.xml · derivative · entry 12

Foundation Capital Management Co. VIII, L.L.C. · CIK 0001645076 · 10% owner

Foundation Capital VIII, L.P. · CIK 0001645077 · 10% owner

Foundation Capital VIII Principals Fund, L.L.C. · CIK 0001645178 · 10% owner

Foundation Capital Management Co. LF II, L.L.C. · CIK 0001804257 · 10% owner

Foundation Capital Leadership Fund II, L.P. · CIK 0001804258 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · By Foundation Capital VIII Principals Fund, LLC

Disclosed balance after: 200,751

Underlying: Class A Common Stock · 23,970 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each share of Class B Common Stock was converted into one share of Class A Common Stock for no additional consideration.

F1 · price: Each share of Class B Common Stock was converted into one share of Class A Common Stock for no additional consideration.

F14 · derivative.exercise_date: Each share of Class B Common Stock is convertible into one share of Class A Common Stock at any time at the option of the holder and does not expire.

F14 · derivative.expiration_date: Each share of Class B Common Stock is convertible into one share of Class A Common Stock at any time at the option of the holder and does not expire.

F3 · ownership.nature: These securities are held 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.

Read SEC document
August 21, 2026 Filed Aug 25, 2026 23:33 UTC Cerebras Systems Inc. CBRS · Entity 3072 ConversionClass B Common Stock · Derivative 1,112,904 Not disclosed Not disclosed
Disclosure

SEC source: 0001231919-26-001100 · form4-08252026_110836.xml · derivative · entry 11

Foundation Capital Management Co. VIII, L.L.C. · CIK 0001645076 · 10% owner

Foundation Capital VIII, L.P. · CIK 0001645077 · 10% owner

Foundation Capital VIII Principals Fund, L.L.C. · CIK 0001645178 · 10% owner

Foundation Capital Management Co. LF II, L.L.C. · CIK 0001804257 · 10% owner

Foundation Capital Leadership Fund II, L.P. · CIK 0001804258 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · By Foundation Capital VIII, L.P.

Disclosed balance after: 9,320,575

Underlying: Class A Common Stock · 1,112,904 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each share of Class B Common Stock was converted into one share of Class A Common Stock for no additional consideration.

F1 · price: Each share of Class B Common Stock was converted into one share of Class A Common Stock for no additional consideration.

F14 · derivative.exercise_date: Each share of Class B Common Stock is convertible into one share of Class A Common Stock at any time at the option of the holder and does not expire.

F14 · derivative.expiration_date: Each share of Class B Common Stock is convertible into one share of Class A Common Stock at any time at the option of the holder and does not expire.

F2 · ownership.nature: These securities are held 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.

Read SEC document
August 21, 2026 Filed Aug 25, 2026 23:33 UTC Cerebras Systems Inc. CBRS · Entity 3072 OtherClass A Common Stock 18,155 $0.00 $0.00
Disclosure

SEC source: 0001231919-26-001100 · form4-08252026_110836.xml · nonDerivative · entry 10

Foundation Capital Management Co. VIII, L.L.C. · CIK 0001645076 · 10% owner

Foundation Capital VIII, L.P. · CIK 0001645077 · 10% owner

Foundation Capital VIII Principals Fund, L.L.C. · CIK 0001645178 · 10% owner

Foundation Capital Management Co. LF II, L.L.C. · CIK 0001804257 · 10% owner

Foundation Capital Leadership Fund II, L.P. · CIK 0001804258 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · By Foundation Capital Management Co. LF II, L.L.C.

Disclosed balance after: 0

F13 · kind: Represents a pro rata, in-kind distribution, and not a purchase or sale of securities, by FCMLF2 to its members without additional consideration.

F12 · ownership.nature: These securities are held by FCMLF2. FCMLF2 disclaims beneficial ownership of such securities except to the extent of its pecuniary interest therein.

Read SEC document
August 21, 2026 Filed Aug 25, 2026 23:33 UTC Cerebras Systems Inc. CBRS · Entity 3072 OtherClass A Common Stock 18,155 $0.00 $0.00
Disclosure

SEC source: 0001231919-26-001100 · form4-08252026_110836.xml · nonDerivative · entry 9

Foundation Capital Management Co. VIII, L.L.C. · CIK 0001645076 · 10% owner

Foundation Capital VIII, L.P. · CIK 0001645077 · 10% owner

Foundation Capital VIII Principals Fund, L.L.C. · CIK 0001645178 · 10% owner

Foundation Capital Management Co. LF II, L.L.C. · CIK 0001804257 · 10% owner

Foundation Capital Leadership Fund II, L.P. · CIK 0001804258 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · By Foundation Capital Management Co. LF II, L.L.C.

Disclosed balance after: 18,155

F11 · kind: Represents receipt of shares in the distribution in kind described in footnote (7).

F12 · ownership.nature: These securities are held by FCMLF2. FCMLF2 disclaims beneficial ownership of such securities except to the extent of its pecuniary interest therein.

Read SEC document
August 21, 2026 Filed Aug 25, 2026 23:33 UTC Cerebras Systems Inc. CBRS · Entity 3072 OtherClass A Common Stock 287,932 $0.00 $0.00
Disclosure

SEC source: 0001231919-26-001100 · form4-08252026_110836.xml · nonDerivative · entry 8

Foundation Capital Management Co. VIII, L.L.C. · CIK 0001645076 · 10% owner

Foundation Capital VIII, L.P. · CIK 0001645077 · 10% owner

Foundation Capital VIII Principals Fund, L.L.C. · CIK 0001645178 · 10% owner

Foundation Capital Management Co. LF II, L.L.C. · CIK 0001804257 · 10% owner

Foundation Capital Leadership Fund II, L.P. · CIK 0001804258 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · By Foundation Capital Management Co. VIII, L.L.C.

Disclosed balance after: 0

F10 · kind: Represents a pro rata, in-kind distribution, and not a purchase or sale of securities, by FCM8 to its members without additional consideration.

F9 · ownership.nature: These securities are held by FCM8. FCM8 disclaims beneficial ownership of such securities except to the extent of its pecuniary interest therein.

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August 21, 2026 Filed Aug 25, 2026 23:33 UTC Cerebras Systems Inc. CBRS · Entity 3072 OtherClass A Common Stock 287,932 $0.00 $0.00
Disclosure

SEC source: 0001231919-26-001100 · form4-08252026_110836.xml · nonDerivative · entry 7

Foundation Capital Management Co. VIII, L.L.C. · CIK 0001645076 · 10% owner

Foundation Capital VIII, L.P. · CIK 0001645077 · 10% owner

Foundation Capital VIII Principals Fund, L.L.C. · CIK 0001645178 · 10% owner

Foundation Capital Management Co. LF II, L.L.C. · CIK 0001804257 · 10% owner

Foundation Capital Leadership Fund II, L.P. · CIK 0001804258 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · By Foundation Capital Management Co. VIII, L.L.C.

Disclosed balance after: 287,932

F8 · kind: Represents receipt of shares in the distributions in kind described in footnotes (5) and (6).

F9 · ownership.nature: These securities are held by FCM8. FCM8 disclaims beneficial ownership of such securities except to the extent of its pecuniary interest therein.

Read SEC document
August 21, 2026 Filed Aug 25, 2026 23:33 UTC Cerebras Systems Inc. CBRS · Entity 3072 OtherClass A Common Stock 87,313 $0.00 $0.00
Disclosure

SEC source: 0001231919-26-001100 · form4-08252026_110836.xml · nonDerivative · entry 6

Foundation Capital Management Co. VIII, L.L.C. · CIK 0001645076 · 10% owner

Foundation Capital VIII, L.P. · CIK 0001645077 · 10% owner

Foundation Capital VIII Principals Fund, L.L.C. · CIK 0001645178 · 10% owner

Foundation Capital Management Co. LF II, L.L.C. · CIK 0001804257 · 10% owner

Foundation Capital Leadership Fund II, L.P. · CIK 0001804258 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · By Foundation Capital Leadership Fund II, L.P.

Disclosed balance after: 0

F7 · kind: Represents a pro rata, in-kind distribution, and not a purchase or sale of securities, by FCLF2 to its general partner and limited partners without additional consideration.

F4 · ownership.nature: These securities are held by Foundation Capital Leadership Fund II, L.P. ("FCLF2"). Foundation Capital Management Co,. LF II, L.L.C. ("FCMLF2") serves as the sole general partner of FCLF2 and, as such, FCMLF2 possesses voting and dispositive power over the shares held by FCLF2, and may be deemed to have indirect beneficial ownership of the shares held by FCLF2. FCMLF2 disclaims beneficial ownership of such securities except to the extent of its pecuniary interest therein.

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August 21, 2026 Filed Aug 25, 2026 23:33 UTC Cerebras Systems Inc. CBRS · Entity 3072 OtherClass A Common Stock 23,970 $0.00 $0.00
Disclosure

SEC source: 0001231919-26-001100 · form4-08252026_110836.xml · nonDerivative · entry 5

Foundation Capital Management Co. VIII, L.L.C. · CIK 0001645076 · 10% owner

Foundation Capital VIII, L.P. · CIK 0001645077 · 10% owner

Foundation Capital VIII Principals Fund, L.L.C. · CIK 0001645178 · 10% owner

Foundation Capital Management Co. LF II, L.L.C. · CIK 0001804257 · 10% owner

Foundation Capital Leadership Fund II, L.P. · CIK 0001804258 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · By Foundation Capital VIII Principals Fund, L.L.C.

Disclosed balance after: 0

F6 · kind: Represents a pro rata, in-kind distribution, and not a purchase or sale of securities, by FC8P to its general partner and limited partners without additional consideration.

F3 · ownership.nature: These securities are held 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.

Read SEC document
August 21, 2026 Filed Aug 25, 2026 23:33 UTC Cerebras Systems Inc. CBRS · Entity 3072 OtherClass A Common Stock 1,112,904 $0.00 $0.00
Disclosure

SEC source: 0001231919-26-001100 · form4-08252026_110836.xml · nonDerivative · entry 4

Foundation Capital Management Co. VIII, L.L.C. · CIK 0001645076 · 10% owner

Foundation Capital VIII, L.P. · CIK 0001645077 · 10% owner

Foundation Capital VIII Principals Fund, L.L.C. · CIK 0001645178 · 10% owner

Foundation Capital Management Co. LF II, L.L.C. · CIK 0001804257 · 10% owner

Foundation Capital Leadership Fund II, L.P. · CIK 0001804258 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · By Foundation Capital VIII, L.P.

Disclosed balance after: 0

F5 · kind: Represents a pro rata, in-kind distribution, and not a purchase or sale of securities, by FC8 to its general partner and limited partners without additional consideration.

F2 · ownership.nature: These securities are held 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.

Read SEC document
August 21, 2026 Filed Aug 25, 2026 23:33 UTC Cerebras Systems Inc. CBRS · Entity 3072 ConversionClass A Common Stock 87,313 Not disclosed Not disclosed
Disclosure

SEC source: 0001231919-26-001100 · form4-08252026_110836.xml · nonDerivative · entry 3

Foundation Capital Management Co. VIII, L.L.C. · CIK 0001645076 · 10% owner

Foundation Capital VIII, L.P. · CIK 0001645077 · 10% owner

Foundation Capital VIII Principals Fund, L.L.C. · CIK 0001645178 · 10% owner

Foundation Capital Management Co. LF II, L.L.C. · CIK 0001804257 · 10% owner

Foundation Capital Leadership Fund II, L.P. · CIK 0001804258 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · By Foundation Capital Leadership Fund II, L.P.

Disclosed balance after: 87,313

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Each share of Class B Common Stock was converted into one share of Class A Common Stock for no additional consideration.

F4 · ownership.nature: These securities are held by Foundation Capital Leadership Fund II, L.P. ("FCLF2"). Foundation Capital Management Co,. LF II, L.L.C. ("FCMLF2") serves as the sole general partner of FCLF2 and, as such, FCMLF2 possesses voting and dispositive power over the shares held by FCLF2, and may be deemed to have indirect beneficial ownership of the shares held by FCLF2. FCMLF2 disclaims beneficial ownership of such securities except to the extent of its pecuniary interest therein.

Read SEC document
August 21, 2026 Filed Aug 25, 2026 23:33 UTC Cerebras Systems Inc. CBRS · Entity 3072 ConversionClass A Common Stock 23,970 Not disclosed Not disclosed
Disclosure

SEC source: 0001231919-26-001100 · form4-08252026_110836.xml · nonDerivative · entry 2

Foundation Capital Management Co. VIII, L.L.C. · CIK 0001645076 · 10% owner

Foundation Capital VIII, L.P. · CIK 0001645077 · 10% owner

Foundation Capital VIII Principals Fund, L.L.C. · CIK 0001645178 · 10% owner

Foundation Capital Management Co. LF II, L.L.C. · CIK 0001804257 · 10% owner

Foundation Capital Leadership Fund II, L.P. · CIK 0001804258 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · By Foundation Capital VIII Principals Fund, L.L.C.

Disclosed balance after: 23,970

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Each share of Class B Common Stock was converted into one share of Class A Common Stock for no additional consideration.

F3 · ownership.nature: These securities are held 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.

Read SEC document
August 21, 2026 Filed Aug 25, 2026 23:33 UTC Cerebras Systems Inc. CBRS · Entity 3072 ConversionClass A Common Stock 1,112,904 Not disclosed Not disclosed
Disclosure

SEC source: 0001231919-26-001100 · form4-08252026_110836.xml · nonDerivative · entry 1

Foundation Capital Management Co. VIII, L.L.C. · CIK 0001645076 · 10% owner

Foundation Capital VIII, L.P. · CIK 0001645077 · 10% owner

Foundation Capital VIII Principals Fund, L.L.C. · CIK 0001645178 · 10% owner

Foundation Capital Management Co. LF II, L.L.C. · CIK 0001804257 · 10% owner

Foundation Capital Leadership Fund II, L.P. · CIK 0001804258 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · By Foundation Capital VIII, L.P.

Disclosed balance after: 1,112,904

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Each share of Class B Common Stock was converted into one share of Class A Common Stock for no additional consideration.

F2 · ownership.nature: These securities are held 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.

Read SEC document
August 18, 2026 Filed Aug 21, 2026 00:51 UTC Cerebras Systems Inc. CBRS · Entity 3072 ConversionClass B Common Stock · Derivative 136,426 Not disclosed Not disclosed
Disclosure

SEC source: 0001231919-26-000962 · form4-08212026_120802.xml · derivative · entry 13

Foundation Capital Management Co. VIII, L.L.C. · CIK 0001645076 · 10% owner

Foundation Capital VIII, L.P. · CIK 0001645077 · 10% owner

Foundation Capital VIII Principals Fund, L.L.C. · CIK 0001645178 · 10% owner

Foundation Capital Management Co. LF II, L.L.C. · CIK 0001804257 · 10% owner

Foundation Capital Leadership Fund II, L.P. · CIK 0001804258 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · By Foundation Capital Leadership Fund II, L.P.

Disclosed balance after: 818,559

Underlying: Class A Common Stock · 136,426 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each share of Class B Common Stock was converted into one share of Class A Common Stock for no additional consideration.

F1 · price: Each share of Class B Common Stock was converted into one share of Class A Common Stock for no additional consideration.

F14 · derivative.exercise_date: Each share of Class B Common Stock is convertible into one share of Class A Common Stock at any time at the option of the holder and does not expire.

F14 · derivative.expiration_date: Each share of Class B Common Stock is convertible into one share of Class A Common Stock at any time at the option of the holder and does not expire.

F4 · ownership.nature: These securities are held by Foundation Capital Leadership Fund II, L.P. ("FCLF2"). Foundation Capital Management Co,. LF II, L.L.C. ("FCMLF2") serves as the sole general partner of FCLF2 and, as such, FCMLF2 possesses voting and dispositive power over the shares held by FCLF2, and may be deemed to have indirect beneficial ownership of the shares held by FCLF2. FCMLF2 disclaims beneficial ownership of such securities except to the extent of its pecuniary interest therein.

Read SEC document
August 18, 2026 Filed Aug 21, 2026 00:51 UTC Cerebras Systems Inc. CBRS · Entity 3072 ConversionClass B Common Stock · Derivative 37,453 Not disclosed Not disclosed
Disclosure

SEC source: 0001231919-26-000962 · form4-08212026_120802.xml · derivative · entry 12

Foundation Capital Management Co. VIII, L.L.C. · CIK 0001645076 · 10% owner

Foundation Capital VIII, L.P. · CIK 0001645077 · 10% owner

Foundation Capital VIII Principals Fund, L.L.C. · CIK 0001645178 · 10% owner

Foundation Capital Management Co. LF II, L.L.C. · CIK 0001804257 · 10% owner

Foundation Capital Leadership Fund II, L.P. · CIK 0001804258 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · By Foundation Capital VIII Principals Fund, LLC

Disclosed balance after: 224,721

Underlying: Class A Common Stock · 37,453 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each share of Class B Common Stock was converted into one share of Class A Common Stock for no additional consideration.

F1 · price: Each share of Class B Common Stock was converted into one share of Class A Common Stock for no additional consideration.

F14 · derivative.exercise_date: Each share of Class B Common Stock is convertible into one share of Class A Common Stock at any time at the option of the holder and does not expire.

F14 · derivative.expiration_date: Each share of Class B Common Stock is convertible into one share of Class A Common Stock at any time at the option of the holder and does not expire.

F3 · ownership.nature: These securities are held 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.

Read SEC document
August 18, 2026 Filed Aug 21, 2026 00:51 UTC Cerebras Systems Inc. CBRS · Entity 3072 ConversionClass B Common Stock · Derivative 1,738,913 Not disclosed Not disclosed
Disclosure

SEC source: 0001231919-26-000962 · form4-08212026_120802.xml · derivative · entry 11

Foundation Capital Management Co. VIII, L.L.C. · CIK 0001645076 · 10% owner

Foundation Capital VIII, L.P. · CIK 0001645077 · 10% owner

Foundation Capital VIII Principals Fund, L.L.C. · CIK 0001645178 · 10% owner

Foundation Capital Management Co. LF II, L.L.C. · CIK 0001804257 · 10% owner

Foundation Capital Leadership Fund II, L.P. · CIK 0001804258 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · By Foundation Capital VIII, L.P.

Disclosed balance after: 10,433,479

Underlying: Class A Common Stock · 1,738,913 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each share of Class B Common Stock was converted into one share of Class A Common Stock for no additional consideration.

F1 · price: Each share of Class B Common Stock was converted into one share of Class A Common Stock for no additional consideration.

F14 · derivative.exercise_date: Each share of Class B Common Stock is convertible into one share of Class A Common Stock at any time at the option of the holder and does not expire.

F14 · derivative.expiration_date: Each share of Class B Common Stock is convertible into one share of Class A Common Stock at any time at the option of the holder and does not expire.

F2 · ownership.nature: These securities are held 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.

Read SEC document
August 18, 2026 Filed Aug 21, 2026 00:51 UTC Cerebras Systems Inc. CBRS · Entity 3072 OtherClass A Common Stock 29,741 $0.00 $0.00
Disclosure

SEC source: 0001231919-26-000962 · form4-08212026_120802.xml · nonDerivative · entry 10

Foundation Capital Management Co. VIII, L.L.C. · CIK 0001645076 · 10% owner

Foundation Capital VIII, L.P. · CIK 0001645077 · 10% owner

Foundation Capital VIII Principals Fund, L.L.C. · CIK 0001645178 · 10% owner

Foundation Capital Management Co. LF II, L.L.C. · CIK 0001804257 · 10% owner

Foundation Capital Leadership Fund II, L.P. · CIK 0001804258 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · By Foundation Capital Management Co. LF II, L.L.C.

Disclosed balance after: 0

F13 · kind: Represents a pro rata, in-kind distribution, and not a purchase or sale of securities, by FCMLF2 to its members without additional consideration.

F12 · ownership.nature: These securities are held by FCMLF2. FCMLF2 disclaims beneficial ownership of such securities except to the extent of its pecuniary interest therein.

Read SEC document
August 18, 2026 Filed Aug 21, 2026 00:51 UTC Cerebras Systems Inc. CBRS · Entity 3072 OtherClass A Common Stock 28,373 $0.00 $0.00
Disclosure

SEC source: 0001231919-26-000962 · form4-08212026_120802.xml · nonDerivative · entry 9

Foundation Capital Management Co. VIII, L.L.C. · CIK 0001645076 · 10% owner

Foundation Capital VIII, L.P. · CIK 0001645077 · 10% owner

Foundation Capital VIII Principals Fund, L.L.C. · CIK 0001645178 · 10% owner

Foundation Capital Management Co. LF II, L.L.C. · CIK 0001804257 · 10% owner

Foundation Capital Leadership Fund II, L.P. · CIK 0001804258 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · By Foundation Capital Management Co. LF II, L.L.C.

Disclosed balance after: 29,741

F11 · kind: Represents receipt of shares in the distribution in kind described in footnote (7).

F12 · ownership.nature: These securities are held by FCMLF2. FCMLF2 disclaims beneficial ownership of such securities except to the extent of its pecuniary interest therein.

Read SEC document
August 18, 2026 Filed Aug 21, 2026 00:51 UTC Cerebras Systems Inc. CBRS · Entity 3072 OtherClass A Common Stock 449,885 $0.00 $0.00
Disclosure

SEC source: 0001231919-26-000962 · form4-08212026_120802.xml · nonDerivative · entry 8

Foundation Capital Management Co. VIII, L.L.C. · CIK 0001645076 · 10% owner

Foundation Capital VIII, L.P. · CIK 0001645077 · 10% owner

Foundation Capital VIII Principals Fund, L.L.C. · CIK 0001645178 · 10% owner

Foundation Capital Management Co. LF II, L.L.C. · CIK 0001804257 · 10% owner

Foundation Capital Leadership Fund II, L.P. · CIK 0001804258 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · By Foundation Capital Management Co. VIII, L.L.C.

Disclosed balance after: 0

F10 · kind: Represents a pro rata, in-kind distribution, and not a purchase or sale of securities, by FCM8 to its members without additional consideration.

F9 · ownership.nature: These securities are held by FCM8. FCM8 disclaims beneficial ownership of such securities except to the extent of its pecuniary interest therein.

Read SEC document
August 18, 2026 Filed Aug 21, 2026 00:51 UTC Cerebras Systems Inc. CBRS · Entity 3072 OtherClass A Common Stock 449,885 $0.00 $0.00
Disclosure

SEC source: 0001231919-26-000962 · form4-08212026_120802.xml · nonDerivative · entry 7

Foundation Capital Management Co. VIII, L.L.C. · CIK 0001645076 · 10% owner

Foundation Capital VIII, L.P. · CIK 0001645077 · 10% owner

Foundation Capital VIII Principals Fund, L.L.C. · CIK 0001645178 · 10% owner

Foundation Capital Management Co. LF II, L.L.C. · CIK 0001804257 · 10% owner

Foundation Capital Leadership Fund II, L.P. · CIK 0001804258 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · By Foundation Capital Management Co. VIII, L.L.C.

Disclosed balance after: 449,885

F8 · kind: Represents receipt of shares in the distributions in kind described in footnotes (5) and (6).

F9 · ownership.nature: These securities are held by FCM8. FCM8 disclaims beneficial ownership of such securities except to the extent of its pecuniary interest therein.

Read SEC document
August 18, 2026 Filed Aug 21, 2026 00:51 UTC Cerebras Systems Inc. CBRS · Entity 3072 OtherClass A Common Stock 136,426 $0.00 $0.00
Disclosure

SEC source: 0001231919-26-000962 · form4-08212026_120802.xml · nonDerivative · entry 6

Foundation Capital Management Co. VIII, L.L.C. · CIK 0001645076 · 10% owner

Foundation Capital VIII, L.P. · CIK 0001645077 · 10% owner

Foundation Capital VIII Principals Fund, L.L.C. · CIK 0001645178 · 10% owner

Foundation Capital Management Co. LF II, L.L.C. · CIK 0001804257 · 10% owner

Foundation Capital Leadership Fund II, L.P. · CIK 0001804258 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · By Foundation Capital Leadership Fund II, L.P.

Disclosed balance after: 0

F7 · kind: Represents a pro rata, in-kind distribution, and not a purchase or sale of securities, by FCLF2 to its general partner and limited partners without additional consideration.

F4 · ownership.nature: These securities are held by Foundation Capital Leadership Fund II, L.P. ("FCLF2"). Foundation Capital Management Co,. LF II, L.L.C. ("FCMLF2") serves as the sole general partner of FCLF2 and, as such, FCMLF2 possesses voting and dispositive power over the shares held by FCLF2, and may be deemed to have indirect beneficial ownership of the shares held by FCLF2. FCMLF2 disclaims beneficial ownership of such securities except to the extent of its pecuniary interest therein.

Read SEC document
August 18, 2026 Filed Aug 21, 2026 00:51 UTC Cerebras Systems Inc. CBRS · Entity 3072 OtherClass A Common Stock 37,453 $0.00 $0.00
Disclosure

SEC source: 0001231919-26-000962 · form4-08212026_120802.xml · nonDerivative · entry 5

Foundation Capital Management Co. VIII, L.L.C. · CIK 0001645076 · 10% owner

Foundation Capital VIII, L.P. · CIK 0001645077 · 10% owner

Foundation Capital VIII Principals Fund, L.L.C. · CIK 0001645178 · 10% owner

Foundation Capital Management Co. LF II, L.L.C. · CIK 0001804257 · 10% owner

Foundation Capital Leadership Fund II, L.P. · CIK 0001804258 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · By Foundation Capital VIII Principals Fund, L.L.C.

Disclosed balance after: 0

F6 · kind: Represents a pro rata, in-kind distribution, and not a purchase or sale of securities, by FC8P to its general partner and limited partners without additional consideration.

F3 · ownership.nature: These securities are held 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.

Read SEC document
August 18, 2026 Filed Aug 21, 2026 00:51 UTC Cerebras Systems Inc. CBRS · Entity 3072 OtherClass A Common Stock 1,738,913 $0.00 $0.00
Disclosure

SEC source: 0001231919-26-000962 · form4-08212026_120802.xml · nonDerivative · entry 4

Foundation Capital Management Co. VIII, L.L.C. · CIK 0001645076 · 10% owner

Foundation Capital VIII, L.P. · CIK 0001645077 · 10% owner

Foundation Capital VIII Principals Fund, L.L.C. · CIK 0001645178 · 10% owner

Foundation Capital Management Co. LF II, L.L.C. · CIK 0001804257 · 10% owner

Foundation Capital Leadership Fund II, L.P. · CIK 0001804258 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · By Foundation Capital VIII, L.P.

Disclosed balance after: 0

F5 · kind: Represents a pro rata, in-kind distribution, and not a purchase or sale of securities, by FC8 to its general partner and limited partners without additional consideration.

F2 · ownership.nature: These securities are held 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.

Read SEC document
August 18, 2026 Filed Aug 21, 2026 00:51 UTC Cerebras Systems Inc. CBRS · Entity 3072 ConversionClass A Common Stock 136,426 Not disclosed Not disclosed
Disclosure

SEC source: 0001231919-26-000962 · form4-08212026_120802.xml · nonDerivative · entry 3

Foundation Capital Management Co. VIII, L.L.C. · CIK 0001645076 · 10% owner

Foundation Capital VIII, L.P. · CIK 0001645077 · 10% owner

Foundation Capital VIII Principals Fund, L.L.C. · CIK 0001645178 · 10% owner

Foundation Capital Management Co. LF II, L.L.C. · CIK 0001804257 · 10% owner

Foundation Capital Leadership Fund II, L.P. · CIK 0001804258 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · By Foundation Capital Leadership Fund II, L.P.

Disclosed balance after: 136,426

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Each share of Class B Common Stock was converted into one share of Class A Common Stock for no additional consideration.

F4 · ownership.nature: These securities are held by Foundation Capital Leadership Fund II, L.P. ("FCLF2"). Foundation Capital Management Co,. LF II, L.L.C. ("FCMLF2") serves as the sole general partner of FCLF2 and, as such, FCMLF2 possesses voting and dispositive power over the shares held by FCLF2, and may be deemed to have indirect beneficial ownership of the shares held by FCLF2. FCMLF2 disclaims beneficial ownership of such securities except to the extent of its pecuniary interest therein.

Read SEC document
August 18, 2026 Filed Aug 21, 2026 00:51 UTC Cerebras Systems Inc. CBRS · Entity 3072 ConversionClass A Common Stock 37,453 Not disclosed Not disclosed
Disclosure

SEC source: 0001231919-26-000962 · form4-08212026_120802.xml · nonDerivative · entry 2

Foundation Capital Management Co. VIII, L.L.C. · CIK 0001645076 · 10% owner

Foundation Capital VIII, L.P. · CIK 0001645077 · 10% owner

Foundation Capital VIII Principals Fund, L.L.C. · CIK 0001645178 · 10% owner

Foundation Capital Management Co. LF II, L.L.C. · CIK 0001804257 · 10% owner

Foundation Capital Leadership Fund II, L.P. · CIK 0001804258 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · By Foundation Capital VIII Principals Fund, L.L.C.

Disclosed balance after: 37,453

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Each share of Class B Common Stock was converted into one share of Class A Common Stock for no additional consideration.

F3 · ownership.nature: These securities are held 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.

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August 18, 2026 Filed Aug 21, 2026 00:51 UTC Cerebras Systems Inc. CBRS · Entity 3072 ConversionClass A Common Stock 1,738,913 Not disclosed Not disclosed
Disclosure

SEC source: 0001231919-26-000962 · form4-08212026_120802.xml · nonDerivative · entry 1

Foundation Capital Management Co. VIII, L.L.C. · CIK 0001645076 · 10% owner

Foundation Capital VIII, L.P. · CIK 0001645077 · 10% owner

Foundation Capital VIII Principals Fund, L.L.C. · CIK 0001645178 · 10% owner

Foundation Capital Management Co. LF II, L.L.C. · CIK 0001804257 · 10% owner

Foundation Capital Leadership Fund II, L.P. · CIK 0001804258 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · By Foundation Capital VIII, L.P.

Disclosed balance after: 1,738,913

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Each share of Class B Common Stock was converted into one share of Class A Common Stock for no additional consideration.

F2 · ownership.nature: These securities are held 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.

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August 14, 2026 Filed Aug 18, 2026 22:37 UTC Cerebras Systems Inc. CBRS · Entity 3072 ConversionClass B Common Stock · Derivative 27,285 Not disclosed Not disclosed
Disclosure

SEC source: 0001231919-26-000942 · form4-08182026_100808.xml · derivative · entry 18

Foundation Capital Management Co. VIII, L.L.C. · CIK 0001645076 · 10% owner

Foundation Capital VIII, L.P. · CIK 0001645077 · 10% owner

Foundation Capital VIII Principals Fund, L.L.C. · CIK 0001645178 · 10% owner

Foundation Capital Management Co. LF II, L.L.C. · CIK 0001804257 · 10% owner

Foundation Capital Leadership Fund II, L.P. · CIK 0001804258 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · By Foundation Capital Leadership Fund II, L.P.

Disclosed balance after: 954,985

Underlying: Class A Common Stock · 27,285 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each share of Class B Common Stock was converted into one share of Class A Common Stock for no additional consideration.

F1 · price: Each share of Class B Common Stock was converted into one share of Class A Common Stock for no additional consideration.

F13 · derivative.exercise_date: Each share of Class B Common Stock is convertible into one share of Class A Common Stock at any time at the option of the holder and does not expire.

F13 · derivative.expiration_date: Each share of Class B Common Stock is convertible into one share of Class A Common Stock at any time at the option of the holder and does not expire.

F4 · ownership.nature: These securities are held by Foundation Capital Leadership Fund II, L.P. ("FCLF2"). Foundation Capital Management Co,. LF II, L.L.C. ("FCMLF2") serves as the sole general partner of FCLF2 and, as such, FCMLF2 possesses voting and dispositive power over the shares held by FCLF2, and may be deemed to have indirect beneficial ownership of the shares held by FCLF2. FCMLF2 disclaims beneficial ownership of such securities except to the extent of its pecuniary interest therein.

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August 14, 2026 Filed Aug 18, 2026 22:37 UTC Cerebras Systems Inc. CBRS · Entity 3072 ConversionClass B Common Stock · Derivative 7,490 Not disclosed Not disclosed
Disclosure

SEC source: 0001231919-26-000942 · form4-08182026_100808.xml · derivative · entry 17

Foundation Capital Management Co. VIII, L.L.C. · CIK 0001645076 · 10% owner

Foundation Capital VIII, L.P. · CIK 0001645077 · 10% owner

Foundation Capital VIII Principals Fund, L.L.C. · CIK 0001645178 · 10% owner

Foundation Capital Management Co. LF II, L.L.C. · CIK 0001804257 · 10% owner

Foundation Capital Leadership Fund II, L.P. · CIK 0001804258 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · By Foundation Capital VIII Principals Fund, LLC

Disclosed balance after: 262,174

Underlying: Class A Common Stock · 7,490 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each share of Class B Common Stock was converted into one share of Class A Common Stock for no additional consideration.

F1 · price: Each share of Class B Common Stock was converted into one share of Class A Common Stock for no additional consideration.

F13 · derivative.exercise_date: Each share of Class B Common Stock is convertible into one share of Class A Common Stock at any time at the option of the holder and does not expire.

F13 · derivative.expiration_date: Each share of Class B Common Stock is convertible into one share of Class A Common Stock at any time at the option of the holder and does not expire.

F3 · ownership.nature: These securities are held 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.

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August 14, 2026 Filed Aug 18, 2026 22:37 UTC Cerebras Systems Inc. CBRS · Entity 3072 ConversionClass B Common Stock · Derivative 347,782 Not disclosed Not disclosed
Disclosure

SEC source: 0001231919-26-000942 · form4-08182026_100808.xml · derivative · entry 16

Foundation Capital Management Co. VIII, L.L.C. · CIK 0001645076 · 10% owner

Foundation Capital VIII, L.P. · CIK 0001645077 · 10% owner

Foundation Capital VIII Principals Fund, L.L.C. · CIK 0001645178 · 10% owner

Foundation Capital Management Co. LF II, L.L.C. · CIK 0001804257 · 10% owner

Foundation Capital Leadership Fund II, L.P. · CIK 0001804258 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · By Foundation Capital VIII, L.P.

Disclosed balance after: 12,172,392

Underlying: Class A Common Stock · 347,782 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each share of Class B Common Stock was converted into one share of Class A Common Stock for no additional consideration.

F1 · price: Each share of Class B Common Stock was converted into one share of Class A Common Stock for no additional consideration.

F13 · derivative.exercise_date: Each share of Class B Common Stock is convertible into one share of Class A Common Stock at any time at the option of the holder and does not expire.

F13 · derivative.expiration_date: Each share of Class B Common Stock is convertible into one share of Class A Common Stock at any time at the option of the holder and does not expire.

F2 · ownership.nature: These securities are held 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.

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August 14, 2026 Filed Aug 18, 2026 22:37 UTC Cerebras Systems Inc. CBRS · Entity 3072 OtherClass A Common Stock 1,368 $0.00 $0.00
Disclosure

SEC source: 0001231919-26-000942 · form4-08182026_100808.xml · nonDerivative · entry 12

Foundation Capital Management Co. VIII, L.L.C. · CIK 0001645076 · 10% owner

Foundation Capital VIII, L.P. · CIK 0001645077 · 10% owner

Foundation Capital VIII Principals Fund, L.L.C. · CIK 0001645178 · 10% owner

Foundation Capital Management Co. LF II, L.L.C. · CIK 0001804257 · 10% owner

Foundation Capital Leadership Fund II, L.P. · CIK 0001804258 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · By Foundation Capital Management Co. LF II, L.L.C.

Disclosed balance after: 1,368

F11 · kind: Represents receipt of shares in the distribution in kind described in footnote (7).

F12 · ownership.nature: These securities are held by FCMLF2. FCMLF2 disclaims beneficial ownership of such securities except to the extent of its pecuniary interest therein.

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August 14, 2026 Filed Aug 18, 2026 22:37 UTC Cerebras Systems Inc. CBRS · Entity 3072 OtherClass A Common Stock 449,885 $0.00 $0.00
Disclosure

SEC source: 0001231919-26-000942 · form4-08182026_100808.xml · nonDerivative · entry 11

Foundation Capital Management Co. VIII, L.L.C. · CIK 0001645076 · 10% owner

Foundation Capital VIII, L.P. · CIK 0001645077 · 10% owner

Foundation Capital VIII Principals Fund, L.L.C. · CIK 0001645178 · 10% owner

Foundation Capital Management Co. LF II, L.L.C. · CIK 0001804257 · 10% owner

Foundation Capital Leadership Fund II, L.P. · CIK 0001804258 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · By Foundation Capital Management Co. VIII, L.L.C.

Disclosed balance after: 0

F10 · kind: Represents a pro rata, in-kind distribution, and not a purchase or sale of securities, by FCM8 to its members without additional consideration.

F9 · ownership.nature: These securities are held by FCM8. FCM8 disclaims beneficial ownership of such securities except to the extent of its pecuniary interest therein.

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August 14, 2026 Filed Aug 18, 2026 22:37 UTC Cerebras Systems Inc. CBRS · Entity 3072 OtherClass A Common Stock 449,885 $0.00 $0.00
Disclosure

SEC source: 0001231919-26-000942 · form4-08182026_100808.xml · nonDerivative · entry 10

Foundation Capital Management Co. VIII, L.L.C. · CIK 0001645076 · 10% owner

Foundation Capital VIII, L.P. · CIK 0001645077 · 10% owner

Foundation Capital VIII Principals Fund, L.L.C. · CIK 0001645178 · 10% owner

Foundation Capital Management Co. LF II, L.L.C. · CIK 0001804257 · 10% owner

Foundation Capital Leadership Fund II, L.P. · CIK 0001804258 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · By Foundation Capital Management Co. VIII, L.L.C.

Disclosed balance after: 449,885

F8 · kind: Represents receipt of shares in the distributions in kind described in footnotes (5) and (6).

F9 · ownership.nature: These securities are held by FCM8. FCM8 disclaims beneficial ownership of such securities except to the extent of its pecuniary interest therein.

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August 14, 2026 Filed Aug 18, 2026 22:37 UTC Cerebras Systems Inc. CBRS · Entity 3072 OtherClass A Common Stock 136,426 $0.00 $0.00
Disclosure

SEC source: 0001231919-26-000942 · form4-08182026_100808.xml · nonDerivative · entry 9

Foundation Capital Management Co. VIII, L.L.C. · CIK 0001645076 · 10% owner

Foundation Capital VIII, L.P. · CIK 0001645077 · 10% owner

Foundation Capital VIII Principals Fund, L.L.C. · CIK 0001645178 · 10% owner

Foundation Capital Management Co. LF II, L.L.C. · CIK 0001804257 · 10% owner

Foundation Capital Leadership Fund II, L.P. · CIK 0001804258 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · By Foundation Capital Leadership Fund II, L.P.

Disclosed balance after: 0

F7 · kind: Represents a pro rata, in-kind distribution, and not a purchase or sale of securities, by FCLF2 to its general partner and limited partners without additional consideration.

F4 · ownership.nature: These securities are held by Foundation Capital Leadership Fund II, L.P. ("FCLF2"). Foundation Capital Management Co,. LF II, L.L.C. ("FCMLF2") serves as the sole general partner of FCLF2 and, as such, FCMLF2 possesses voting and dispositive power over the shares held by FCLF2, and may be deemed to have indirect beneficial ownership of the shares held by FCLF2. FCMLF2 disclaims beneficial ownership of such securities except to the extent of its pecuniary interest therein.

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August 14, 2026 Filed Aug 18, 2026 22:37 UTC Cerebras Systems Inc. CBRS · Entity 3072 OtherClass A Common Stock 37,453 $0.00 $0.00
Disclosure

SEC source: 0001231919-26-000942 · form4-08182026_100808.xml · nonDerivative · entry 8

Foundation Capital Management Co. VIII, L.L.C. · CIK 0001645076 · 10% owner

Foundation Capital VIII, L.P. · CIK 0001645077 · 10% owner

Foundation Capital VIII Principals Fund, L.L.C. · CIK 0001645178 · 10% owner

Foundation Capital Management Co. LF II, L.L.C. · CIK 0001804257 · 10% owner

Foundation Capital Leadership Fund II, L.P. · CIK 0001804258 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · By Foundation Capital VIII Principals Fund, L.L.C.

Disclosed balance after: 0

F6 · kind: Represents a pro rata, in-kind distribution, and not a purchase or sale of securities, by FC8P to its general partner and limited partners without additional consideration.

F3 · ownership.nature: These securities are held 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.

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August 14, 2026 Filed Aug 18, 2026 22:37 UTC Cerebras Systems Inc. CBRS · Entity 3072 OtherClass A Common Stock 1,738,913 $0.00 $0.00
Disclosure

SEC source: 0001231919-26-000942 · form4-08182026_100808.xml · nonDerivative · entry 7

Foundation Capital Management Co. VIII, L.L.C. · CIK 0001645076 · 10% owner

Foundation Capital VIII, L.P. · CIK 0001645077 · 10% owner

Foundation Capital VIII Principals Fund, L.L.C. · CIK 0001645178 · 10% owner

Foundation Capital Management Co. LF II, L.L.C. · CIK 0001804257 · 10% owner

Foundation Capital Leadership Fund II, L.P. · CIK 0001804258 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · By Foundation Capital VIII, L.P.

Disclosed balance after: 0

F5 · kind: Represents a pro rata, in-kind distribution, and not a purchase or sale of securities, by FC8 to its general partner and limited partners without additional consideration.

F2 · ownership.nature: These securities are held 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.

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August 14, 2026 Filed Aug 18, 2026 22:37 UTC Cerebras Systems Inc. CBRS · Entity 3072 ConversionClass A Common Stock 27,285 Not disclosed Not disclosed
Disclosure

SEC source: 0001231919-26-000942 · form4-08182026_100808.xml · nonDerivative · entry 6

Foundation Capital Management Co. VIII, L.L.C. · CIK 0001645076 · 10% owner

Foundation Capital VIII, L.P. · CIK 0001645077 · 10% owner

Foundation Capital VIII Principals Fund, L.L.C. · CIK 0001645178 · 10% owner

Foundation Capital Management Co. LF II, L.L.C. · CIK 0001804257 · 10% owner

Foundation Capital Leadership Fund II, L.P. · CIK 0001804258 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · By Foundation Capital Leadership Fund II, L.P.

Disclosed balance after: 136,426

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Each share of Class B Common Stock was converted into one share of Class A Common Stock for no additional consideration.

F4 · ownership.nature: These securities are held by Foundation Capital Leadership Fund II, L.P. ("FCLF2"). Foundation Capital Management Co,. LF II, L.L.C. ("FCMLF2") serves as the sole general partner of FCLF2 and, as such, FCMLF2 possesses voting and dispositive power over the shares held by FCLF2, and may be deemed to have indirect beneficial ownership of the shares held by FCLF2. FCMLF2 disclaims beneficial ownership of such securities except to the extent of its pecuniary interest therein.

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August 14, 2026 Filed Aug 18, 2026 22:37 UTC Cerebras Systems Inc. CBRS · Entity 3072 ConversionClass A Common Stock 7,490 Not disclosed Not disclosed
Disclosure

SEC source: 0001231919-26-000942 · form4-08182026_100808.xml · nonDerivative · entry 5

Foundation Capital Management Co. VIII, L.L.C. · CIK 0001645076 · 10% owner

Foundation Capital VIII, L.P. · CIK 0001645077 · 10% owner

Foundation Capital VIII Principals Fund, L.L.C. · CIK 0001645178 · 10% owner

Foundation Capital Management Co. LF II, L.L.C. · CIK 0001804257 · 10% owner

Foundation Capital Leadership Fund II, L.P. · CIK 0001804258 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · By Foundation Capital VIII Principals Fund, L.L.C.

Disclosed balance after: 37,453

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Each share of Class B Common Stock was converted into one share of Class A Common Stock for no additional consideration.

F3 · ownership.nature: These securities are held 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.

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August 14, 2026 Filed Aug 18, 2026 22:37 UTC Cerebras Systems Inc. CBRS · Entity 3072 ConversionClass A Common Stock 347,782 Not disclosed Not disclosed
Disclosure

SEC source: 0001231919-26-000942 · form4-08182026_100808.xml · nonDerivative · entry 4

Foundation Capital Management Co. VIII, L.L.C. · CIK 0001645076 · 10% owner

Foundation Capital VIII, L.P. · CIK 0001645077 · 10% owner

Foundation Capital VIII Principals Fund, L.L.C. · CIK 0001645178 · 10% owner

Foundation Capital Management Co. LF II, L.L.C. · CIK 0001804257 · 10% owner

Foundation Capital Leadership Fund II, L.P. · CIK 0001804258 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · By Foundation Capital VIII, L.P.

Disclosed balance after: 1,738,913

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Each share of Class B Common Stock was converted into one share of Class A Common Stock for no additional consideration.

F2 · ownership.nature: These securities are held 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.

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June 24, 2026 Filed Aug 18, 2026 22:37 UTC Cerebras Systems Inc. CBRS · Entity 3072 ConversionClass B Common Stock · Derivative 109,141 Not disclosed Not disclosed
Disclosure

SEC source: 0001231919-26-000942 · form4-08182026_100808.xml · derivative · entry 15

Foundation Capital Management Co. VIII, L.L.C. · CIK 0001645076 · 10% owner

Foundation Capital VIII, L.P. · CIK 0001645077 · 10% owner

Foundation Capital VIII Principals Fund, L.L.C. · CIK 0001645178 · 10% owner

Foundation Capital Management Co. LF II, L.L.C. · CIK 0001804257 · 10% owner

Foundation Capital Leadership Fund II, L.P. · CIK 0001804258 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · By Foundation Capital Leadership Fund II, L.P.

Disclosed balance after: 982,270

Underlying: Class A Common Stock · 109,141 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each share of Class B Common Stock was converted into one share of Class A Common Stock for no additional consideration.

F1 · price: Each share of Class B Common Stock was converted into one share of Class A Common Stock for no additional consideration.

F13 · derivative.exercise_date: Each share of Class B Common Stock is convertible into one share of Class A Common Stock at any time at the option of the holder and does not expire.

F13 · derivative.expiration_date: Each share of Class B Common Stock is convertible into one share of Class A Common Stock at any time at the option of the holder and does not expire.

F4 · ownership.nature: These securities are held by Foundation Capital Leadership Fund II, L.P. ("FCLF2"). Foundation Capital Management Co,. LF II, L.L.C. ("FCMLF2") serves as the sole general partner of FCLF2 and, as such, FCMLF2 possesses voting and dispositive power over the shares held by FCLF2, and may be deemed to have indirect beneficial ownership of the shares held by FCLF2. FCMLF2 disclaims beneficial ownership of such securities except to the extent of its pecuniary interest therein.

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June 24, 2026 Filed Aug 18, 2026 22:37 UTC Cerebras Systems Inc. CBRS · Entity 3072 ConversionClass B Common Stock · Derivative 29,963 Not disclosed Not disclosed
Disclosure

SEC source: 0001231919-26-000942 · form4-08182026_100808.xml · derivative · entry 14

Foundation Capital Management Co. VIII, L.L.C. · CIK 0001645076 · 10% owner

Foundation Capital VIII, L.P. · CIK 0001645077 · 10% owner

Foundation Capital VIII Principals Fund, L.L.C. · CIK 0001645178 · 10% owner

Foundation Capital Management Co. LF II, L.L.C. · CIK 0001804257 · 10% owner

Foundation Capital Leadership Fund II, L.P. · CIK 0001804258 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · By Foundation Capital VIII Principals Fund, LLC

Disclosed balance after: 269,664

Underlying: Class A Common Stock · 29,963 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each share of Class B Common Stock was converted into one share of Class A Common Stock for no additional consideration.

F1 · price: Each share of Class B Common Stock was converted into one share of Class A Common Stock for no additional consideration.

F13 · derivative.exercise_date: Each share of Class B Common Stock is convertible into one share of Class A Common Stock at any time at the option of the holder and does not expire.

F13 · derivative.expiration_date: Each share of Class B Common Stock is convertible into one share of Class A Common Stock at any time at the option of the holder and does not expire.

F3 · ownership.nature: These securities are held 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.

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June 24, 2026 Filed Aug 18, 2026 22:37 UTC Cerebras Systems Inc. CBRS · Entity 3072 ConversionClass B Common Stock · Derivative 1,391,131 Not disclosed Not disclosed
Disclosure

SEC source: 0001231919-26-000942 · form4-08182026_100808.xml · derivative · entry 13

Foundation Capital Management Co. VIII, L.L.C. · CIK 0001645076 · 10% owner

Foundation Capital VIII, L.P. · CIK 0001645077 · 10% owner

Foundation Capital VIII Principals Fund, L.L.C. · CIK 0001645178 · 10% owner

Foundation Capital Management Co. LF II, L.L.C. · CIK 0001804257 · 10% owner

Foundation Capital Leadership Fund II, L.P. · CIK 0001804258 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · By Foundation Capital VIII, L.P.

Disclosed balance after: 12,520,174

Underlying: Class A Common Stock · 1,391,131 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each share of Class B Common Stock was converted into one share of Class A Common Stock for no additional consideration.

F1 · price: Each share of Class B Common Stock was converted into one share of Class A Common Stock for no additional consideration.

F13 · derivative.exercise_date: Each share of Class B Common Stock is convertible into one share of Class A Common Stock at any time at the option of the holder and does not expire.

F13 · derivative.expiration_date: Each share of Class B Common Stock is convertible into one share of Class A Common Stock at any time at the option of the holder and does not expire.

F2 · ownership.nature: These securities are held 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.

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June 24, 2026 Filed Aug 18, 2026 22:37 UTC Cerebras Systems Inc. CBRS · Entity 3072 ConversionClass A Common Stock 109,141 Not disclosed Not disclosed
Disclosure

SEC source: 0001231919-26-000942 · form4-08182026_100808.xml · nonDerivative · entry 3

Foundation Capital Management Co. VIII, L.L.C. · CIK 0001645076 · 10% owner

Foundation Capital VIII, L.P. · CIK 0001645077 · 10% owner

Foundation Capital VIII Principals Fund, L.L.C. · CIK 0001645178 · 10% owner

Foundation Capital Management Co. LF II, L.L.C. · CIK 0001804257 · 10% owner

Foundation Capital Leadership Fund II, L.P. · CIK 0001804258 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · By Foundation Capital Leadership Fund II, L.P.

Disclosed balance after: 109,141

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Each share of Class B Common Stock was converted into one share of Class A Common Stock for no additional consideration.

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June 24, 2026 Filed Aug 18, 2026 22:37 UTC Cerebras Systems Inc. CBRS · Entity 3072 ConversionClass A Common Stock 29,963 Not disclosed Not disclosed
Disclosure

SEC source: 0001231919-26-000942 · form4-08182026_100808.xml · nonDerivative · entry 2

Foundation Capital Management Co. VIII, L.L.C. · CIK 0001645076 · 10% owner

Foundation Capital VIII, L.P. · CIK 0001645077 · 10% owner

Foundation Capital VIII Principals Fund, L.L.C. · CIK 0001645178 · 10% owner

Foundation Capital Management Co. LF II, L.L.C. · CIK 0001804257 · 10% owner

Foundation Capital Leadership Fund II, L.P. · CIK 0001804258 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · By Foundation Capital VIII Principals Fund, LLC

Disclosed balance after: 29,963

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Each share of Class B Common Stock was converted into one share of Class A Common Stock for no additional consideration.

F3 · ownership.nature: These securities are held 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.

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June 24, 2026 Filed Aug 18, 2026 22:37 UTC Cerebras Systems Inc. CBRS · Entity 3072 ConversionClass A Common Stock 1,391,131 Not disclosed Not disclosed
Disclosure

SEC source: 0001231919-26-000942 · form4-08182026_100808.xml · nonDerivative · entry 1

Foundation Capital Management Co. VIII, L.L.C. · CIK 0001645076 · 10% owner

Foundation Capital VIII, L.P. · CIK 0001645077 · 10% owner

Foundation Capital VIII Principals Fund, L.L.C. · CIK 0001645178 · 10% owner

Foundation Capital Management Co. LF II, L.L.C. · CIK 0001804257 · 10% owner

Foundation Capital Leadership Fund II, L.P. · CIK 0001804258 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · By Foundation Capital VIII, L.P.

Disclosed balance after: 1,391,131

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Each share of Class B Common Stock was converted into one share of Class A Common Stock for no additional consideration.

F2 · ownership.nature: These securities are held 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.

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May 15, 2026 Filed May 19, 2026 20:15 UTC Cerebras Systems Inc. CBRS · Entity 3072 ConversionClass B Common Stock · Derivative 1,091,411 Not disclosed Not disclosed
Disclosure

SEC source: 0001231919-26-000511 · form4-05192026_040505.xml · derivative · entry 14

Foundation Capital Management Co. VIII, L.L.C. · CIK 0001645076 · 10% owner

Foundation Capital VIII, L.P. · CIK 0001645077 · 10% owner

Foundation Capital VIII Principals Fund, L.L.C. · CIK 0001645178 · 10% owner

Foundation Capital Management Co. LF II, L.L.C. · CIK 0001804257 · 10% owner

Foundation Capital Leadership Fund II, L.P. · CIK 0001804258 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · By Foundation Capital Leadership Fund II, L.P.

Disclosed balance after: 1,091,411

Underlying: Class A Common Stock · 1,091,411 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: 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.

F1 · price: 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.

F1 · derivative.exercise_date: 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.

F1 · derivative.expiration_date: 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.

F4 · ownership.nature: 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.

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May 15, 2026 Filed May 19, 2026 20:15 UTC Cerebras Systems Inc. CBRS · Entity 3072 ConversionClass B Common Stock · Derivative 299,627 Not disclosed Not disclosed
Disclosure

SEC source: 0001231919-26-000511 · form4-05192026_040505.xml · derivative · entry 13

Foundation Capital Management Co. VIII, L.L.C. · CIK 0001645076 · 10% owner

Foundation Capital VIII, L.P. · CIK 0001645077 · 10% owner

Foundation Capital VIII Principals Fund, L.L.C. · CIK 0001645178 · 10% owner

Foundation Capital Management Co. LF II, L.L.C. · CIK 0001804257 · 10% owner

Foundation Capital Leadership Fund II, L.P. · CIK 0001804258 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · By Foundation Capital VIII Principals Fund, LLC

Disclosed balance after: 299,627

Underlying: Class A Common Stock · 299,627 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: 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.

F1 · price: 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.

F1 · derivative.exercise_date: 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.

F1 · derivative.expiration_date: 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.

F3 · ownership.nature: 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.

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May 15, 2026 Filed May 19, 2026 20:15 UTC Cerebras Systems Inc. CBRS · Entity 3072 ConversionClass B Common Stock · Derivative 13,911,305 Not disclosed Not disclosed
Disclosure

SEC source: 0001231919-26-000511 · form4-05192026_040505.xml · derivative · entry 12

Foundation Capital Management Co. VIII, L.L.C. · CIK 0001645076 · 10% owner

Foundation Capital VIII, L.P. · CIK 0001645077 · 10% owner

Foundation Capital VIII Principals Fund, L.L.C. · CIK 0001645178 · 10% owner

Foundation Capital Management Co. LF II, L.L.C. · CIK 0001804257 · 10% owner

Foundation Capital Leadership Fund II, L.P. · CIK 0001804258 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · By Foundation Capital VIII, L.P.

Disclosed balance after: 13,911,305

Underlying: Class A Common Stock · 13,911,305 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: 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.

F1 · price: 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.

F1 · derivative.exercise_date: 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.

F1 · derivative.expiration_date: 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.

F2 · ownership.nature: 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.

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May 15, 2026 Filed May 19, 2026 20:15 UTC Cerebras Systems Inc. CBRS · Entity 3072 ConversionSeries E Preferred Stock · Derivative 1,091,411 Not disclosed Not disclosed
Disclosure

SEC source: 0001231919-26-000511 · form4-05192026_040505.xml · derivative · entry 11

Foundation Capital Management Co. VIII, L.L.C. · CIK 0001645076 · 10% owner

Foundation Capital VIII, L.P. · CIK 0001645077 · 10% owner

Foundation Capital VIII Principals Fund, L.L.C. · CIK 0001645178 · 10% owner

Foundation Capital Management Co. LF II, L.L.C. · CIK 0001804257 · 10% owner

Foundation Capital Leadership Fund II, L.P. · CIK 0001804258 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · By Foundation Capital Leadership Fund II, L.P.

Disclosed balance after: 0

Underlying: Class B Common Stock · 1,091,411 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: 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.

F1 · price: 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.

F1 · derivative.exercise_date: 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.

F1 · derivative.expiration_date: 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.

F4 · ownership.nature: 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.

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May 15, 2026 Filed May 19, 2026 20:15 UTC Cerebras Systems Inc. CBRS · Entity 3072 ConversionSeries E Preferred Stock · Derivative 1,151 Not disclosed Not disclosed
Disclosure

SEC source: 0001231919-26-000511 · form4-05192026_040505.xml · derivative · entry 10

Foundation Capital Management Co. VIII, L.L.C. · CIK 0001645076 · 10% owner

Foundation Capital VIII, L.P. · CIK 0001645077 · 10% owner

Foundation Capital VIII Principals Fund, L.L.C. · CIK 0001645178 · 10% owner

Foundation Capital Management Co. LF II, L.L.C. · CIK 0001804257 · 10% owner

Foundation Capital Leadership Fund II, L.P. · CIK 0001804258 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · By Foundation Capital VIII Principals Fund, LLC

Disclosed balance after: 0

Underlying: Class B Common Stock · 1,151 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: 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.

F1 · price: 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.

F1 · derivative.exercise_date: 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.

F1 · derivative.expiration_date: 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.

F3 · ownership.nature: 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.

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May 15, 2026 Filed May 19, 2026 20:15 UTC Cerebras Systems Inc. CBRS · Entity 3072 ConversionSeries E Preferred Stock · Derivative 53,419 Not disclosed Not disclosed
Disclosure

SEC source: 0001231919-26-000511 · form4-05192026_040505.xml · derivative · entry 9

Foundation Capital Management Co. VIII, L.L.C. · CIK 0001645076 · 10% owner

Foundation Capital VIII, L.P. · CIK 0001645077 · 10% owner

Foundation Capital VIII Principals Fund, L.L.C. · CIK 0001645178 · 10% owner

Foundation Capital Management Co. LF II, L.L.C. · CIK 0001804257 · 10% owner

Foundation Capital Leadership Fund II, L.P. · CIK 0001804258 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · By Foundation Capital VIII, L.P.

Disclosed balance after: 0

Underlying: Class B Common Stock · 53,419 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: 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.

F1 · price: 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.

F1 · derivative.exercise_date: 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.

F1 · derivative.expiration_date: 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.

F2 · ownership.nature: 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.

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Value uses the disclosed total when available, otherwise shares × reported transaction price. It is not an estimate of exercise cash cost or investment performance.