Cerebras officer files 43,497-share sale notice

Cerebras Systems Inc. (CBRS) reports that officer/director Andrew D. Feldman has filed a notice of proposed sales of Class A common stock under Rule 144.

Rhea-AI Filing Summary

Cerebras Systems Inc. (CBRS) reports that officer/director Andrew D. Feldman has filed a notice of proposed sales of Class A common stock under Rule 144. The shares are expected to come from the vesting of restricted stock units on 08/18/2026 as compensation, with Morgan Stanley Smith Barney LLC listed as the broker. The filing also lists a prior Rule 144 sale of Class A common stock by Feldman within the past three months.

Key Figures

Shares to be sold: 43,497 shares Date of RSU vesting: 08/18/2026 Prior shares sold: 17,990 shares +3 more

6 metrics

Shares to be sold 43,497 shares Class A Common Stock, securities to be sold section, 08/18/2026

Date of RSU vesting 08/18/2026 Vesting of restricted stock units as source of shares to be sold

Prior shares sold 17,990 shares Class A Common Stock sold during the past 3 months on 06/25/2026

Aggregate market value of prior sale $3,113,282.92 Aggregate market value for 17,990 shares sold on 06/25/2026

Approximate market value of securities held $6,713,755.12 Reported under Securities Information for Class A Common Stock

Number of shares outstanding (column value) 26,644 Figure listed in Securities Information section for Class A Common Stock

Key Terms

Rule 144, restricted stock units, Class A Common Stock, Attorney-in-fact

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"

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.

Class A Common Stock financial

"Class A Common Stock | 08/18/2026 | Vesting of restricted stock units"

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.

Attorney-in-fact regulatory

"Signature | /s/ Robert Mills, Attorney-in-fact for Andrew D. Feldman"

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.

FAQ

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

What does the Form 144 filed for CBRS indicate about insider Andrew D. Feldman?

The Form 144 indicates that Andrew D. Feldman, an officer/director of Cerebras Systems Inc. (CBRS), has notified of proposed sales of Class A common stock under Rule 144, with shares tied to the vesting of restricted stock units on 08/18/2026.

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

The notice lists a proposed sale of 43,497 shares of Cerebras Systems Inc. Class A common stock. These shares are associated with the vesting of restricted stock units on 08/18/2026 and are reported as compensation-related securities to be sold under Rule 144.

What prior CBRS stock sale by Andrew D. Feldman is disclosed in this Form 144?

The filing discloses that on 06/25/2026, Andrew D. Feldman sold 17,990 shares of Cerebras Systems Inc. Class A common stock. The aggregate market value reported for that transaction is $3,113,282.92, reflecting a Rule 144 sale in the past three months.

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

The shares to be sold are reported as arising from the vesting of restricted stock units on 08/18/2026. The filing classifies the acquisition of these shares as Compensation, indicating they relate to equity-based pay for Andrew D. Feldman.

Which broker is listed for the proposed CBRS stock sales in this Form 144?

The broker listed is Morgan Stanley Smith Barney LLC Executive Financial Services, located at 1 New York Plaza, New York, NY. This firm is identified in connection with the proposed sales of Class A common stock of Cerebras Systems Inc. under Rule 144.

On which market is Cerebras Systems Inc. (CBRS) Class A common stock listed in this filing?

The notice identifies the trading market as NASDAQ for Cerebras Systems Inc. Class A common stock. This context relates to the Rule 144 filing covering proposed sales and prior sales of CBRS shares by officer/director Andrew D. Feldman.

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

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Accepted by SEC EDGAR 08/18/2026 - 08:18 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	0002039573
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	Andrew D. Feldman
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, Director

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	26644	6713755.12	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			43497	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
Andrew D. Feldman 1237 E. Arques Avenue Sunnyvale, CA 94085	Class A Common Stock	06/25/2026	17990	3113282.92

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 Andrew D. Feldman
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)