Statement of Changes in Beneficial Ownership (Form 4)

FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b). Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person * Benchmark Capital Management Co. VIII, L.L.C. 2. Issuer Name and Ticker or Trading Symbol Cerebras Systems Inc. [CBRS] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director __X__ 10% Owner _____ Officer (give title below) _____ Other (specify below) (Last) (First) (Middle) 2965 WOODSIDE ROAD 3. Date of Earliest Transaction (Month/Day/Year) 06/29/2026 (Street) WOODSIDE, CA 94062 4. If Amendment, Date Original Filed (Month/Day/Year) 6. Individual or Joint/Group Filing (Check Applicable Line) ___ Form filed by One Reporting Person _X_ Form filed by More than One Reporting Person (City) (State) (Zip) Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned

1.Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Class A Common Stock 06/29/2026 C(1) 2,157,802 A $ 0 2,157,802 I See Footnote(2) Class A Common Stock 06/29/2026 J(3) 2,157,802 D $ 0 0 I See Footnote(2)

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)

1. Title of Derivative Security (Instr. 3)

2. Conversion or Exercise Price of Derivative Security

3. Transaction Date (Month/Day/Year)

3A. Deemed Execution Date, if any (Month/Day/Year)

4. Transaction Code (Instr. 8)

5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5)

6. Date Exercisable and Expiration Date (Month/Day/Year)

7. Title and Amount of Underlying Securities (Instr. 3 and 4)

8. Price of Derivative Security (Instr. 5)

9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)

10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4)

11. Nature of Indirect Beneficial Ownership (Instr. 4)

Code

V

(A)

(D)

Date Exercisable

Expiration Date

Title

Amount or Number of Shares

Class B Common Stock

(4)

06/29/2026

C

2,157,802

(4)

(4)

Class A Common Stock

2,157,802

$ 0

12,227,545

I

See Footnote(2)

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
Benchmark Capital Management Co. VIII, L.L.C. 2965 WOODSIDE ROAD WOODSIDE, CA 94062		X
Benchmark Capital Partners VIII, L.P. 2965 WOODSIDE ROAD WOODSIDE, CA 94062		X
Benchmark Founders' Fund VIII, L.P. 2965 WOODSIDE ROAD WOODSIDE, CA 94062		X
Benchmark Founders' Fund VIII-B, L.P. 2965 WOODSIDE ROAD WOODSIDE, CA 94062		X

Signatures

/s/ An-Yen Hu by power of attorney for Benchmark Capital Management Co. VIII, L.L.C.		07/01/2026
**Signature of Reporting Person		Date
/s/ An-Yen Hu by power of attorney for Benchmark Capital Management Co. VIII, L.L.C., the General Partner of Benchmark Capital Partners VIII, L.P.		07/01/2026
**Signature of Reporting Person		Date
/s/ An-Yen Hu by power of attorney for Benchmark Capital Management Co. VIII, L.L.C., the General Partner of Benchmark Founders' Fund VIII, L.P.		07/01/2026
**Signature of Reporting Person		Date
/s/ An-Yen Hu by power of attorney for Benchmark Capital Management Co. VIII, L.L.C., the General Partner of Benchmark Founders' Fund VIII-B, L.P.		07/01/2026
**Signature of Reporting Person		Date

Explanation of Responses:

*	If the form is filed by more than one reporting person, see Instruction 4(b)(v).
**	Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1)	Conversion of a derivative security in accordance with its terms.
(2)	The shares are held by Benchmark Capital Partners VIII, L.P. ("BCP VIII"), as nominee for itself, Benchmark Founders' Fund VIII, L.P. ("BFF VIII") and Benchmark Founders' Fund VIII-B, L.P. ("BFF VIII-B"). Benchmark Capital Management Co. VIII, L.L.C. ("BCMC VIII"), the general partner of each of BCP VIII, BFF VIII and BFF VIII-B, may be deemed to have sole voting and dispositive power over such shares. Each entity disclaims the existence of a "group" and disclaims beneficial ownership of the securities, except to the extent of such entity's pecuniary interest in such securities.
(3)	Represents a pro-rata, in-kind distribution by BCP VIII and its affiliated funds, not for additional consideration, to its partners, including BCMC VIII and its respective members and assignees.
(4)	Each share of Class B Common Stock held by the Reporting Person will automatically convert into one share of Class A Common Stock upon the sale or transfer of such share of Class B Common Stock, subject to certain exceptions, and in certain other circumstances described in the Issuer's amended and restated certificate of incorporation. Each share of Class B Common Stock will also be convertible at any time at the option of the Reporting Person into one share of Class A Common Stock.

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