Cerebras officer plans 9.8M stock sale in 2026

Cerebras Systems Inc. (CBRS) officer Dhiraj Mallick has filed a notice under Rule 144 for a potential sale of Class A common stock.

Rhea-AI Filing Summary

Cerebras Systems Inc. (CBRS) officer Dhiraj Mallick has filed a notice under Rule 144 for a potential sale of Class A common stock. The planned sale covers 38,889 shares, expected to be sold through Morgan Stanley Smith Barney LLC after vesting of restricted stock units on 08/18/2026. The filing also lists a prior sale of 36,131 shares of Class A common stock on 06/25/2026.

Key Figures

Planned shares to be sold: 38,889 shares Approximate value of planned sale: 9,799,250.22 CUSIP for security: 112247109 +3 more

6 metrics

Planned shares to be sold 38,889 shares Class A Common Stock under Rule 144

Approximate value of planned sale 9,799,250.22 Associated with 38,889 shares of Class A Common Stock

CUSIP for security 112247109 Class A Common Stock of Cerebras Systems Inc.

Planned sale date 08/18/2026 Date tied to vesting of restricted stock units and Rule 144 sale

Shares sold in prior 3 months 36,131 shares Class A Common Stock sold on 06/25/2026

Value of prior sale 6,116,196.58 Associated with 36,131 shares sold on 06/25/2026

Key Terms

Rule 144, restricted stock units, attorney-in-fact, Executive Financial Services

4 terms

Rule 144 regulatory

"See the definition of "person" in paragraph (a) of Rule 144."

Rule 144 is a U.S. securities regulation that sets conditions under which restricted or insider-held shares can be legally resold to the public, such as required holding periods, availability of public information, limits on how much can be sold at once, and certain filing requirements. For investors it matters because it determines when previously locked-up shares can enter the market — like a release valve that can increase supply, affect share price, and signal insider intent.

restricted stock units financial

"Vesting of restricted stock units | Issuer"

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

attorney-in-fact regulatory

"Signature | /s/ Robert Mills, Attorney-in-fact for Dhiraj Mallick"

An attorney-in-fact is the person or entity given legal authority through a power of attorney to act on behalf of another for specific tasks, such as signing documents, voting shares, or handling transactions. For investors, this matters because it lets a trusted representative make timely decisions or complete paperwork when the owner cannot, much like handing keys to someone to run errands on your behalf—so checks on scope and limits of that authority are important.

Executive Financial Services financial

"Morgan Stanley Smith Barney LLC Executive Financial Services 1 New York Plaza"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What does the Form 144 filing by CBRS officer Dhiraj Mallick disclose?

The filing discloses a planned sale of 38,889 shares of Cerebras Systems Inc. Class A common stock under Rule 144. The shares relate to vested restricted stock units and may be sold through Morgan Stanley Smith Barney LLC.

How many CBRS shares are planned to be sold under this Form 144?

The notice covers a potential sale of 38,889 shares of Cerebras Systems Inc. Class A common stock. These shares are tied to the vesting of restricted stock units scheduled for 08/18/2026.

What prior CBRS share sales by Dhiraj Mallick are reported in this Form 144?

The document reports that 36,131 shares of Cerebras Systems Inc. Class A common stock were sold on 06/25/2026. The total value associated with that transaction is listed as 6,116,196.58.

Which broker is named for the planned CBRS stock sale in the Form 144?

The planned sale is associated with Morgan Stanley Smith Barney LLC Executive Financial Services at 1 New York Plaza, New York. This broker is listed in connection with the 38,889 shares of Class A common stock.

What is the source of the CBRS shares to be sold under this Form 144?

The shares originate from the vesting of restricted stock units on 08/18/2026, with the issuer identified as Cerebras Systems Inc.. The filing characterizes the transaction source as related to compensation.

Who signed the CBRS Form 144 on behalf of Dhiraj Mallick?

The notice is signed by Robert Mills as attorney-in-fact for Dhiraj Mallick on 08/18/2026. This indicates the filing was executed under a granted power of attorney.

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

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Accepted by SEC EDGAR 08/18/2026 - 08:15 PM EDT Learn about SEC filing dates

Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK	0002039572
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	Cerebras Systems Inc.
SEC File Number	001-43284
Address of Issuer	1237 E. Arques Avenue Sunnyvale, CALIFORNIA 94085
Phone	650-933-4980
Name of Person for Whose Account the Securities are To Be Sold	Dhiraj Mallick
See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.
Relationship to Issuer	Officer

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Class A Common Stock	Morgan Stanley Smith Barney LLC Executive Financial Services 1 New York Plaza 8th Floor New York NY 10004	38889	9799250.22	112247109	08/18/2026	NASDAQ

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Class A Common Stock	08/18/2026	Vesting of restricted stock units	Issuer			38889	08/18/2026	Compensation

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
Dhiraj Mallick 1237 E. Arques Avenue Sunnyvale, CA 94085	Class A Common Stock	06/25/2026	36131	6116196.58

144: Remarks and Signature

Remarks
Date of Notice	08/18/2026
ATTENTION:
The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.
Signature	/s/ Robert Mills, Attorney-in-fact for Dhiraj Mallick
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)