Lior Susan - 23 Sep 2026 Form 4 Insider Report for Cerebras Systems Inc. (CBRS)

Reporting relationship: Director
Issuer ticker: CBRS
Reported as of: 23 Sep 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 25 Sep 2026, 16:34:04 UTC
Prior SEC filing: 17 Sep 2026
Source filing: View source filing
Reporting owner signature: /s/ Lior Susan

Key filing fact

Lior Susan filed Form 4 for Cerebras Systems Inc. (CBRS) on 25 Sep 2026.

Key facts

This page summarizes Lior Susan's Form 4 filing for Cerebras Systems Inc. (CBRS).
3 reported transactions and 0 derivative rows are listed below.
Accepted by SEC: 25 Sep 2026, 16:34.

Change

Previous filing in this sequence was filed on 17 Sep 2026.
Current net transaction value: $0.

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 0001832895 Primary reporting owner

Susan Lior

Relationship: Director
Address: C/O CEREBRAS SYSTEMS INC., 1237 E. ARQUES AVENUE, SUNNYVALE
Signature: /s/ Lior Susan
Signature date: 25 Sep 2026

Reported non-derivative transactions

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

CBRS transaction

Class A Common Stock

Other

Transaction value
Shares: -451,118
Change %: -6.5%
Price
Shares after: 6,490,711
Date: 23 Sep 2026
Ownership: See footnote
Footnotes: F1, F2

CBRS transaction

Class A Common Stock

Other

Transaction value
Shares: +25,757
Change %: +7.9%
Price
Shares after: 351,927
Date: 23 Sep 2026
Ownership: Direct
Footnotes: F3, F4

CBRS transaction

Class A Common Stock

Other

Transaction value
Shares: +23,735
Change %: +8.3%
Price
Shares after: 309,603
Date: 23 Sep 2026
Ownership: See footnote
Footnotes: F3, F5, F6

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

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 6 footnotes

Footnote F1

Represents a pro-rata, in-kind distribution by the Eclipse Entities (as defined below) to its partners, for no additional consideration (the "Distribution").

Footnote F2

Following the distribution, consists of (i) 385,774 shares of Class A common stock held by Eclipse Continuity Fund I, L.P. ("Eclipse Continuity Fund"); (ii) 3,156,361 shares of Class A common stock held by Eclipse SPV II, L.P. ("Eclipse SPV II"); (iii) 289,144 shares of Class A common stock held by Eclipse SPV XIII, L.P. ("Eclipse SPV XIII"); and (iv) 2,659,432 shares of Class A common stock held by Eclipse Ventures Fund I, L.P. ("Eclipse Fund," and together with Eclipse Continuity Fund, Eclipse SPV II, and Eclipse SPV XIII, "Eclipse Entities"). The Reporting Person is the sole managing member of the general partner of each of the Eclipse Entities and may be deemed to have voting, investment, and dispositive power with respect to the shares held by such entities.

Footnote F3

The shares were obtained pursuant to a pro-rata, in-kind distribution from the Eclipse Entities, for no additional consideration.

Footnote F4

This amount reflects the reported transaction and includes 11,046 shares that were inadvertently omitted from the Reporting Person's Form 4 filed on August 18, 2026 due to an administrative error.

Footnote F5

This amount reflects the reported transaction and includes 7,093 shares that were inadvertently omitted from the Reporting Person's Form 4 filed on August 18, 2026 due to an administrative error.

Footnote F6

The shares are held directly by an estate-planning vehicle which is controlled by the Reporting Person.