What prices did CBRS COO Dhiraj Mallick receive for his share sales?

The reported sale prices ranged roughly between $161.30 and $186.94 per share. Individual lines use weighted average sale prices within narrower bands, with detailed breakdowns available on request as described in the Form 4 footnotes.

COO of Cerebras (NASDAQ: CBRS) sells 33,314 shares over two days

Filing Impact

(Very High)

Filing Sentiment

(Very Negative)

Form Type

Rhea-AI Filing Summary

Cerebras Systems Inc. Chief Operating Officer Dhiraj Mallick reported open-market sales of Class A Common Stock. On June 25–26, 2026, he sold a total of 33,314 shares across 28 separate transactions. Reported sale prices ranged from about $161.30 to $186.94 per share, with several trades reported at weighted average prices within narrower bands. The filing does not report any option exercises, and there are no remaining derivative positions shown.

Insider Trade Summary

Net Seller: 33,314 shares ($5,936,180)

Net Sell 28 txns

Insider Mallick Dhiraj

Role Chief Operating Officer

Sold 33,314 shs ($5.94M)

Type	Security	Shares	Price	Value
Sale	Class A Common Stock	200	$161.46	$32K
Sale	Class A Common Stock	300	$162.75	$49K
Sale	Class A Common Stock	400	$163.90	$66K
Sale	Class A Common Stock	300	$165.09	$50K
Sale	Class A Common Stock	400	$166.62	$67K
Sale	Class A Common Stock	400	$167.76	$67K
Sale	Class A Common Stock	700	$169.07	$118K
Sale	Class A Common Stock	100	$169.76	$17K
Sale	Class A Common Stock	300	$171.45	$51K
Sale	Class A Common Stock	839	$172.78	$145K
Sale	Class A Common Stock	11,761	$173.65	$2.04M
Sale	Class A Common Stock	600	$174.70	$105K
Sale	Class A Common Stock	200	$175.94	$35K
Sale	Class A Common Stock	200	$177.23	$35K
Sale	Class A Common Stock	200	$178.12	$36K
Sale	Class A Common Stock	1,100	$179.67	$198K
Sale	Class A Common Stock	1,200	$180.50	$217K
Sale	Class A Common Stock	800	$181.62	$145K
Sale	Class A Common Stock	184	$175.61	$32K
Sale	Class A Common Stock	230	$178.92	$41K
Sale	Class A Common Stock	606	$180.19	$109K
Sale	Class A Common Stock	330	$181.17	$60K
Sale	Class A Common Stock	138	$182.50	$25K
Sale	Class A Common Stock	1,074	$184.30	$198K
Sale	Class A Common Stock	7,282	$185.19	$1.35M
Sale	Class A Common Stock	1,618	$186.23	$301K
Sale	Class A Common Stock	1,752	$186.85	$327K
Sale	Class A Common Stock	100	$187.90	$19K

Holdings After Transaction: Class A Common Stock — 19,800 shares (Direct, null)

Footnotes (1)

The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $178.69 to $179.10, inclusive. Upon request by the staff of the Securities and Exchange commission, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price. The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $179.81 to $180.58, inclusive. Upon request by the staff of the Securities and Exchange commission, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price. The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $181.02 to $181.26, inclusive. Upon request by the staff of the Securities and Exchange commission, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price. The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $183.66 to $184.61, inclusive. Upon request by the staff of the Securities and Exchange commission, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price. The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $184.67 to $185.56, inclusive. Upon request by the staff of the Securities and Exchange commission, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price. The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $185.68 to $186.66, inclusive. Upon request by the staff of the Securities and Exchange commission, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price. The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $186.68 to $186.94, inclusive. Upon request by the staff of the Securities and Exchange commission, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price. The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $161.30 to $161.61, inclusive. Upon request by the staff of the Securities and Exchange commission, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price. The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $162.44 to $162.95, inclusive. Upon request by the staff of the Securities and Exchange commission, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price. The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $163.44 to $164.28, inclusive. Upon request by the staff of the Securities and Exchange commission, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price. The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $164.94 to $165.40, inclusive. Upon request by the staff of the Securities and Exchange commission, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price. The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $166.22 to $167.05, inclusive. Upon request by the staff of the Securities and Exchange commission, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price. The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $167.36 to $167.97, inclusive. Upon request by the staff of the Securities and Exchange commission, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price. The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $168.62 to $169.58, inclusive. Upon request by the staff of the Securities and Exchange commission, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price. The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $170.99 to $171.92, inclusive. Upon request by the staff of the Securities and Exchange commission, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price. The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $172.18 to $173.10, inclusive. Upon request by the staff of the Securities and Exchange commission, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price. The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $173.20 to $174.19, inclusive. Upon request by the staff of the Securities and Exchange commission, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price. The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $174.25 to $175.21, inclusive. Upon request by the staff of the Securities and Exchange commission, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price. The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $175.73 to $176.14, inclusive. Upon request by the staff of the Securities and Exchange commission, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price. The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $176.81 to $177.64, inclusive. Upon request by the staff of the Securities and Exchange commission, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price. The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $178.03 to $178.20, inclusive. Upon request by the staff of the Securities and Exchange commission, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price. The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $179.11 to $180.05, inclusive. Upon request by the staff of the Securities and Exchange commission, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price. The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $180.13 to $180.99, inclusive. Upon request by the staff of the Securities and Exchange commission, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price. The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $181.17 to $182.11, inclusive. Upon request by the staff of the Securities and Exchange commission, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price.

Key Figures

Shares sold: 33,314 shares Number of sale transactions: 28 transactions Lowest reported price range: $161.30–$161.61/share +2 more

5 metrics

Shares sold 33,314 shares Total net shares sold by COO per transactionSummary

Number of sale transactions 28 transactions SellCount in transactionSummary

Lowest reported price range $161.30–$161.61/share Price band in footnote F8

Highest reported price range $186.68–$186.94/share Price band in footnote F7

Net buy/sell direction Net-sell of 33,314 shares netBuySellDirection and netBuySellShares

Key Terms

open-market sale, Class A Common Stock, weighted average sale price, Form 4, +1 more

5 terms

open-market sale financial

"transaction_action: "open-market sale" for each Class A Common Stock transaction"

An open-market sale is when a shareholder sells existing shares directly on a public exchange to any willing buyer, rather than through a private deal. Think of it like putting goods on a busy market stall where price is set by supply and demand; for investors it matters because such sales increase available supply, can put short-term downward pressure on the stock price, and signal changes in liquidity or investor confidence.

Class A Common Stock financial

"security_title: "Class A Common Stock" on all reported transactions"

Class A common stock is a category of a company’s shares that carries a specific set of ownership rights—most commonly defined voting power and claims on dividends—set out in the company’s charter. For investors it matters because the class determines how much influence you have over corporate decisions, the share’s likely dividend and trading behavior, and how it compares in value to other share classes, like choosing a particular seat with different privileges at the company’s decision-making table.

weighted average sale price financial

"The sale price reported ... represents the weighted average sale price of the shares sold"

Form 4 regulatory

"INSIDER FILING DATA (Form 4): structured insider trading information"

Form 4 is a official document that company insiders, such as executives or major shareholders, file with regulators whenever they buy or sell company shares. It provides transparency about how those with inside knowledge are trading, helping investors see if insiders are confident in the company's prospects or may be selling for personal reasons. This information can influence investor decisions by revealing insiders' perspectives on the company's value.

net-sell financial

"netBuySellDirection: "net-sell" in transactionSummary"

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Form 4 Insider Transactions: What Each Field Means →

Available on EDGAR 06/29/2026 - 04:54 PM Accepted by SEC EDGAR 06/29/2026 - 04:53 PM

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).

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^*

Mallick Dhiraj

(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 Operating Officer

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
06/25/2026

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)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Class A Common Stock	06/25/2026		S		184	D	$175.61	33,130	D
Class A Common Stock	06/25/2026		S		230	D	$178.92⁽¹⁾	32,900	D
Class A Common Stock	06/25/2026		S		606	D	$180.19⁽²⁾	32,294	D
Class A Common Stock	06/25/2026		S		330	D	$181.17⁽³⁾	31,964	D
Class A Common Stock	06/25/2026		S		138	D	$182.5	31,826	D
Class A Common Stock	06/25/2026		S		1,074	D	$184.3⁽⁴⁾	30,752	D
Class A Common Stock	06/25/2026		S		7,282	D	$185.19⁽⁵⁾	23,470	D
Class A Common Stock	06/25/2026		S		1,618	D	$186.23⁽⁶⁾	21,852	D
Class A Common Stock	06/25/2026		S		1,752	D	$186.85⁽⁷⁾	20,100	D
Class A Common Stock	06/25/2026		S		100	D	$187.9	20,000	D
Class A Common Stock	06/26/2026		S		200	D	$161.46⁽⁸⁾	19,800	D
Class A Common Stock	06/26/2026		S		300	D	$162.75⁽⁹⁾	19,500	D
Class A Common Stock	06/26/2026		S		400	D	$163.9⁽¹⁰⁾	19,100	D
Class A Common Stock	06/26/2026		S		300	D	$165.09⁽¹¹⁾	18,800	D
Class A Common Stock	06/26/2026		S		400	D	$166.62⁽¹²⁾	18,400	D
Class A Common Stock	06/26/2026		S		400	D	$167.76⁽¹³⁾	18,000	D
Class A Common Stock	06/26/2026		S		700	D	$169.07⁽¹⁴⁾	17,300	D
Class A Common Stock	06/26/2026		S		100	D	$169.76	17,200	D
Class A Common Stock	06/26/2026		S		300	D	$171.45⁽¹⁵⁾	16,900	D
Class A Common Stock	06/26/2026		S		839	D	$172.78⁽¹⁶⁾	16,061	D
Class A Common Stock	06/26/2026		S		11,761	D	$173.65⁽¹⁷⁾	4,300	D
Class A Common Stock	06/26/2026		S		600	D	$174.7⁽¹⁸⁾	3,700	D
Class A Common Stock	06/26/2026		S		200	D	$175.94⁽¹⁹⁾	3,500	D
Class A Common Stock	06/26/2026		S		200	D	$177.23⁽²⁰⁾	3,300	D
Class A Common Stock	06/26/2026		S		200	D	$178.12⁽²¹⁾	3,100	D
Class A Common Stock	06/26/2026		S		1,100	D	$179.67⁽²²⁾	2,000	D
Class A Common Stock	06/26/2026		S		1,200	D	$180.5⁽²³⁾	800	D
Class A Common Stock	06/26/2026		S		800	D	$181.62⁽²⁴⁾	0	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)
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)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)

Explanation of Responses:

1. The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $178.69 to $179.10, inclusive. Upon request by the staff of the Securities and Exchange commission, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price.

2. The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $179.81 to $180.58, inclusive. Upon request by the staff of the Securities and Exchange commission, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price.

3. The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $181.02 to $181.26, inclusive. Upon request by the staff of the Securities and Exchange commission, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price.

4. The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $183.66 to $184.61, inclusive. Upon request by the staff of the Securities and Exchange commission, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price.

5. The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $184.67 to $185.56, inclusive. Upon request by the staff of the Securities and Exchange commission, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price.

6. The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $185.68 to $186.66, inclusive. Upon request by the staff of the Securities and Exchange commission, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price.

7. The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $186.68 to $186.94, inclusive. Upon request by the staff of the Securities and Exchange commission, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price.

8. The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $161.30 to $161.61, inclusive. Upon request by the staff of the Securities and Exchange commission, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price.

9. The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $162.44 to $162.95, inclusive. Upon request by the staff of the Securities and Exchange commission, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price.

10. The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $163.44 to $164.28, inclusive. Upon request by the staff of the Securities and Exchange commission, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price.

11. The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $164.94 to $165.40, inclusive. Upon request by the staff of the Securities and Exchange commission, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price.

12. The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $166.22 to $167.05, inclusive. Upon request by the staff of the Securities and Exchange commission, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price.

13. The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $167.36 to $167.97, inclusive. Upon request by the staff of the Securities and Exchange commission, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price.

14. The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $168.62 to $169.58, inclusive. Upon request by the staff of the Securities and Exchange commission, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price.

15. The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $170.99 to $171.92, inclusive. Upon request by the staff of the Securities and Exchange commission, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price.

16. The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $172.18 to $173.10, inclusive. Upon request by the staff of the Securities and Exchange commission, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price.

17. The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $173.20 to $174.19, inclusive. Upon request by the staff of the Securities and Exchange commission, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price.

18. The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $174.25 to $175.21, inclusive. Upon request by the staff of the Securities and Exchange commission, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price.

19. The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $175.73 to $176.14, inclusive. Upon request by the staff of the Securities and Exchange commission, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price.

20. The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $176.81 to $177.64, inclusive. Upon request by the staff of the Securities and Exchange commission, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price.

21. The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $178.03 to $178.20, inclusive. Upon request by the staff of the Securities and Exchange commission, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price.

22. The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $179.11 to $180.05, inclusive. Upon request by the staff of the Securities and Exchange commission, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price.

23. The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $180.13 to $180.99, inclusive. Upon request by the staff of the Securities and Exchange commission, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price.

24. The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $181.17 to $182.11, inclusive. Upon request by the staff of the Securities and Exchange commission, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price.

Remarks:

This Form 4 is the second of two Forms 4 being filed by the Reporting Person relating to transactions that occurred on June 25, 2026 and June 26, 2026 (the "Transaction Dates"). Because there are more than 30 rows associated with the Reporting Person's transactions that occurred on the Transaction Dates, and EDGAR will not allow for the entry of more than 30 rows on a single Form 4, this second Form 4 is being filed to report the transactions that were not included on the first Form 4. The two Forms 4 filed by the Reporting Person on the date hereof should be read together as one consolidated filing.

	/s/ Robert Mills, Attorney-in-fact	06/29/2026
	** 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)

Source: View Original Filing on SEC EDGAR

FAQ

What insider transaction did CBRS COO Dhiraj Mallick report?

Cerebras Systems COO Dhiraj Mallick reported multiple open-market sales of Class A Common Stock. Over June 25–26, 2026, he sold 33,314 shares across 28 transactions, as disclosed in a Form 4 insider trading report.

How many Cerebras Systems (CBRS) shares did the COO sell?

The COO sold a total of 33,314 shares of Cerebras Systems Class A Common Stock. These shares were sold in 28 separate open-market transactions over two days, according to the Form 4 filing’s transaction summary data.

Were there any option exercises in the CBRS COO’s Form 4 filing?

No, the Form 4 lists only non-derivative Class A Common Stock sales. The derivativeSummary section shows zero derivative transactions and zero exerciseShares, indicating no stock options or other derivatives were exercised in this filing.

How many transactions did the Cerebras Systems COO execute?

The Form 4 reports 28 separate sale transactions in Class A Common Stock. All are coded “S” for open-market or private sale, and together they total 33,314 shares sold over June 25–26, 2026.