Steven Vassallo - 04 Sep 2026 Form 4 Insider Report for Cerebras Systems Inc. (CBRS)

Reporting relationship: Director
Issuer ticker: CBRS
Reported as of: 04 Sep 2026
Net transaction value: -$10,515,135
SEC form: 4
Accepted by SEC: 08 Sep 2026, 20:20:54 UTC
Prior SEC filing: 25 Aug 2026
Source filing: View source filing
Reporting owner signature: /s/ Robert Mills, Attorney-in-fact

Key filing fact

Steven Vassallo filed Form 4 for Cerebras Systems Inc. (CBRS) on 08 Sep 2026.

Key facts

This page summarizes Steven Vassallo's Form 4 filing for Cerebras Systems Inc. (CBRS).
3 reported transactions and 0 derivative rows are listed below.
Accepted by SEC: 08 Sep 2026, 20:20.

Change

Previous filing in this sequence was filed on 25 Aug 2026.
Current net transaction value: -$10,515,135.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001567929 Primary reporting owner

Vassallo Steven

Relationship: Director
Address: C/O CEREBRAS SYSTEMS INC., 1237 E. ARQUES AVENUE, SUNNYVALE
Signature: /s/ Robert Mills, Attorney-in-fact
Signature date: 08 Sep 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

CBRS transaction

Class A Common Stock

Sale

Transaction value: $4,430,558
Shares: -21,117
Change %: -9.5%
Price: $209.81
Shares after: 200,860
Date: 04 Sep 2026
Ownership: By Revocable Trust
Footnotes: F1, F2

CBRS transaction

Class A Common Stock

Sale

Transaction value: $4,580,386
Shares: -21,773
Change %: -11%
Price: $210.37
Shares after: 179,087
Date: 04 Sep 2026
Ownership: By Revocable Trust
Footnotes: F2, F3

CBRS transaction

Class A Common Stock

Sale

Transaction value: $1,504,192
Shares: -7,110
Change %: -4%
Price: $211.56
Shares after: 171,977
Date: 04 Sep 2026
Ownership: By Revocable Trust
Footnotes: F2, F4

CBRS holding

Class A Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 139,618
Date: 04 Sep 2026
Ownership: By Irrevocable Trust
Footnotes: F5

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 5 footnotes

Footnote F1

The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $209.00 to $209.99, 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.

Footnote F2

The securities are held by a revocable family trust, of which the Reporting Person is a co-trustee. The Reporting Person disclaims beneficial ownership of such shares except to the extent of his proportionate pecuniary interest therein.

Footnote F3

The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $210.00 to $210.99, 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.

Footnote F4

The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $211.00 to $211.99, 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.

Footnote F5

The securities are held by an irrevocable GST trust, of which the Reporting Person is a co-trustee. The Reporting Person disclaims beneficial ownership of these shares except to the extent of his pecuniary interest therein.