Cerebras Systems' Yagnesh Patel sells 1,320 shares

The reported post-sale direct position was 15,356 shares of Class A Common Stock.

Rhea-AI Filing Summary

Cerebras Systems Inc. (CBRS) Chief Accounting Officer Yagnesh Patel sold 1,320 shares of Class A Common Stock at $204.50 per share on September 28, 2026. The sale was made under a Rule 10b5-1 trading plan adopted on June 29, 2026. Patel directly held 15,356 shares after the sale.

Insider Trade Summary 10b5-1

Net Seller: 1,320 shares

Net Sell 1 txn

Insider Patel Yagnesh

Role Chief Accounting Officer

Sold 1,320 shs ($270K)

Type	Security	Shares	Price	Value
Sale	Class A Common Stock F1	1,320	$204.50	$270K

Holdings After Transaction: Class A Common Stock — 15,356 shares (Direct)

Footnotes (1)

1. F1. The sale reported on this Form 4 represents shares sold by the Reporting Person pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on June 29, 2026

Key Figures

Shares sold: 1,320 shares Sale price: $204.50 per share Direct shares held after sale: 15,356 shares +1 more

4 metrics

Shares sold 1,320 shares September 28, 2026

Sale price $204.50 per share September 28, 2026

Direct shares held after sale 15,356 shares After the September 28, 2026 sale

Trading plan adoption date June 29, 2026 Rule 10b5-1 trading plan

Key Terms

Rule 10b5-1 trading plan

1 terms

Rule 10b5-1 trading plan regulatory

"sale reported pursuant to a Rule 10b5-1 trading plan"

A Rule 10b5-1 trading plan is a pre-arranged schedule that allows company insiders to buy or sell stock at specific times, even if they have inside information. It helps prevent accusations of unfair trading by making these transactions look planned and transparent, rather than sneaky or illegal.

FAQ

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How many shares did CBRS Chief Accounting Officer Yagnesh Patel sell, and at what price?

Yagnesh Patel sold 1,320 shares of Cerebras Systems Inc. Class A Common Stock at $204.50 per share on September 28, 2026. The sale was made pursuant to a Rule 10b5-1 trading plan adopted on June 29, 2026.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Available on EDGAR 09/30/2026 - 06:34 PM Accepted by SEC EDGAR 09/30/2026 - 06:33 PM Learn about SEC filing dates

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

X

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Patel Yagnesh

(Last) (First) (Middle)

C/O CEREBRAS SYSTEMS INC.

1237 E. ARQUES AVENUE

(Street)

SUNNYVALE CALIFORNIA 94085

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
Cerebras Systems Inc. [ CBRS ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Chief Accounting Officer

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
09/28/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

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	09/28/2026		S(1)		1,320	D	$204.5	15,356	D

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 Securities Underlying Derivative Security (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: 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

Explanation of Responses:

1. The sale reported on this Form 4 represents shares sold by the Reporting Person pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on June 29, 2026

Remarks:

	/s/ Robert Mills, Attorney-in-fact	09/30/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* 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).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)