Cerebras insider plans $7.1M stock sale Sept. 4

Cerebras Systems Inc. insider Andrew Feldman filed a Rule 144 notice to sell shares following an option exercise and disclosed sizable prior stock sales over the past three months.

Rhea-AI Filing Summary

Cerebras Systems Inc. (CBRS) insider Andrew Feldman has filed a notice of proposed sales under Rule 144. The filing covers 37,441 shares of common stock, to be issued via an exercise of stock options for cash on September 4, 2026, with Morgan Stanley Smith Barney LLC as broker.

The notice also lists prior sales of Cerebras common stock during the past three months totaling over 300,000 shares by Feldman and related parties, including transactions identified as occurring under a Rule 10b5-1 trading plan.

Key Figures

Shares to be sold: 37,441 shares Aggregate value of shares to be sold: $7,130,264.04 Prior sale on August 24, 2026: 50,000 shares for $9,351,105.00 +3 more

6 metrics

Shares to be sold 37,441 shares Common stock covered by the new Rule 144 notice for September 4, 2026

Aggregate value of shares to be sold $7,130,264.04 Value associated with 37,441 Cerebras common shares in the securities information section

Prior sale on August 24, 2026 50,000 shares for $9,351,105.00 Common stock sold by Feldman Bravo Fam Gvng Fund

10b5-1 sale on August 21, 2026 237,559 shares for $47,339,050.51 Common stock sold as 10b5-1 Sales for Andrew Feldman

Sale on August 18, 2026 26,644 shares for $5,920,936.26 Common stock sold by Andrew Feldman

Sale on June 25, 2026 17,990 shares for $3,113,282.84 Common stock sold by Andrew Feldman

Key Terms

Rule 144, 10b5-1, Exercise of Stock Options, Common

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.

10b5-1 regulatory

"10b5-1 Sales for ANDREW FELDMAN 1237 E. Arques Avenue"

A 10b5-1 plan is a pre-set schedule that lets company insiders buy or sell shares according to written instructions made when they do not possess material, nonpublic information. Think of it as a timed automatic payment for stock trades: it helps insiders avoid accusations of trading on secret information and gives outside investors a clearer signal about whether sales are routine or potentially informative about the company’s prospects.

Exercise of Stock Options financial

"Common | 09/04/2026 | Exercise of Stock Options | Issuer"

Common financial

"Common | Morgan Stanley Smith Barney LLC Executive Financial Services"

FAQ

What does the Form 144 filing by CBRS insider Andrew Feldman disclose?

It discloses that Andrew Feldman plans to sell 37,441 shares of Cerebras Systems Inc. common stock, to be acquired through an exercise of stock options for cash on September 4, 2026, using Morgan Stanley Smith Barney LLC as broker.

How many CBRS shares is Andrew Feldman planning to sell in this Form 144?

The notice covers a proposed sale of 37,441 shares of Cerebras Systems Inc. common stock. These shares are expected to be obtained through the exercise of stock options for cash on September 4, 2026.

What prior CBRS share sales are reported in the last three months?

The filing lists past three-month sales including 50,000 shares on August 24, 2026, 237,559 shares on August 21, 2026, 26,644 shares on August 18, 2026, and 17,990 shares on June 25, 2026, by Andrew Feldman and related parties.

Were any of Andrew Feldman’s CBRS sales under a 10b5-1 trading plan?

Yes. The sale of 237,559 shares of Cerebras Systems Inc. common stock on August 21, 2026 is identified as 10b5-1 Sales for ANDREW FELDMAN in the disclosure of securities sold during the past three months.

What is the reported market value associated with the new CBRS shares to be sold?

For the 37,441 shares of Cerebras Systems Inc. common stock covered by the notice, the filing reports an aggregate value of $7,130,264.04 in the securities information section, tied to trading on September 4, 2026 on NASDAQ.

Who is the broker listed for Andrew Feldman’s CBRS Form 144 sale?

The broker listed is Morgan Stanley Smith Barney LLC Executive Financial Services, located at 1 New York Plaza, 8th Floor, New York, NY 10004, for the planned sale of Cerebras Systems Inc. common stock.

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

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Available on EDGAR 09/04/2026 - 04:33 PM Accepted by SEC EDGAR 09/04/2026 - 04:33 PM 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 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	Director
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
Common	Morgan Stanley Smith Barney LLC Executive Financial Services 1 New York Plaza 8th Floor New York NY 10004	37441	7130264.04	112247109	09/04/2026	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 *
Common	09/04/2026	Exercise of Stock Options	Issuer			37441	09/04/2026	Cash

* 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
Feldman Bravo Fam Gvng Fund 1237 E. Arques Avenue Sunnyvale CA 94085	Common	08/24/2026	50000	9351105.00
10b5-1 Sales for ANDREW FELDMAN 1237 E. Arques Avenue Sunnyvale CA 94085	Common	08/21/2026	237559	47339050.51
ANDREW FELDMAN 1237 E. Arques Avenue Sunnyvale CA 94085	Common	08/18/2026	26644	5920936.26
ANDREW FELDMAN 1237 E. Arques Avenue Sunnyvale CA 94085	Common	06/25/2026	17990	3113282.84

144: Remarks and Signature

Remarks
Date of Notice	09/04/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	05/20/2026
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/ Andrew Feldman
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)