# EDGAR Filing Document

**Accession Number:** 0001832895
**File Stem:** 0001628280-26-035745
**Filing Date:** 2026-5
**Character Count:** 9257
**Document Hash:** 08161a05f246946abf11a72f2dddef58
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001628280-26-035745.hdr.sgml**: 20260515

**ACCESSION NUMBER**: 0001628280-26-035745

**CONFORMED SUBMISSION TYPE**: 4

**PUBLIC DOCUMENT COUNT**: 1

**CONFORMED PERIOD OF REPORT**: 20260515

**FILED AS OF DATE**: 20260515

**DATE AS OF CHANGE**: 20260515

**REPORTING-OWNER**: 

**OWNER DATA:**
- **COMPANY CONFORMED NAME:** Susan Lior
- **CENTRAL INDEX KEY:** 0001832895

**ORGANIZATION NAME:**

**FILING VALUES:**
- **FORM TYPE:** 4
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-43284
- **FILM NUMBER:** 26990285

**MAIL ADDRESS:**
- **STREET 1:** 1412 62ND STREET
- **CITY:** EMERYVILLE
- **STATE:** CA
- **ZIP:** 94608
**ISSUER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Cerebras Systems Inc.
- **CENTRAL INDEX KEY:** 0002021728
- **STANDARD INDUSTRIAL CLASSIFICATION:** SEMICONDUCTORS & RELATED DEVICES [3674]
- **ORGANIZATION NAME:** 04 Manufacturing
- **EIN:** 000000000
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**BUSINESS ADDRESS:**
- **STREET 1:** 1237 E. ARQUES AVE.
- **CITY:** SUNNYVALE
- **STATE:** CA
- **ZIP:** 94085
- **BUSINESS PHONE:** (650) 933-4890

**MAIL ADDRESS:**
- **STREET 1:** 1237 E. ARQUES AVE.
- **CITY:** SUNNYVALE
- **STATE:** CA
- **ZIP:** 94085

### UNITED STATES SECURITIES AND EXCHANGE COMMISSION
**Washington, D.C. 20549**

## FORM 4

### STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

[ ] Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

[ ] Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

---

| | | |
|:---|:---|:---|
| **1. Name and Address of Reporting Person**<sup>*</sup><br>Susan Lior<br><sub>(Last) (First) (Middle)</sub><br>C/O CEREBRAS SYSTEMS INC.<br>1237 E. ARQUES AVENUE<br><sub>(Street)</sub><br>SUNNYVALE, CA 94085<br><sub>(City) (State) (Zip)</sub> | **3. Date of Earliest Transaction (Month/Day/Year)**<br>2026-05-15 | **5. Relationship of Reporting Person(s) to Issuer**<br>(Check all applicable)<br>[X] Director [X] 10% Owner<br>[ ] Officer (give title below) [ ] Other (specify below)<br>_ _ |
| **2. Issuer Name and Ticker or Trading Symbol**<br>Cerebras Systems Inc. [ CBRS ] | **4. If Amendment, Date of Original Filed (Month/Day/Year)**<br>  | **6. Individual or Joint/Group Filing (Check Applicable Line)**<br>[X] Form filed by One Reporting Person<br>[ ] Form filed by More than One Reporting Person |

---

## Table I - Non-Derivative Securities

---

|  |  |  |  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1. Title of Security | 2. Transaction Date | 2A. Deemed Execution Date | 3. Transaction Code (V) | 3. Transaction Code (V) | 4. Securities Acquired (A) or Disposed of (D) | 4. Securities Acquired (A) or Disposed of (D) | 4. Securities Acquired (A) or Disposed of (D) | 5. Amount of Securities Beneficially Owned | 6. Ownership Form | 7. Nature of Indirect Beneficial Ownership |
| 1. Title of Security | 2. Transaction Date | 2A. Deemed Execution Date | Code | V | Amount | (A) or (D) | Price | 5. Amount of Securities Beneficially Owned | 6. Ownership Form | 7. Nature of Indirect Beneficial Ownership |
| Class A Common Stock | 2026-05-15 |  | J<sup>(1)</sup> |  | 1093998 | D | <sup>(1)</sup> | 0 | I | See footnotes<sup>(2)(3)</sup> |

---

## Table II - Derivative Securities

---

|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1. Title of Derivative Security | 2. Conversion or Exercise Price | 3. Transaction Date | 3A. Deemed Execution Date | 4. Transaction Code (V) | 4. Transaction Code (V) | 5. Number of Derivative Securities Acquired (A) or Disposed of (D) | 5. Number of Derivative Securities Acquired (A) or Disposed of (D) | 6. Date Exercisable and Expiration Date | 6. Date Exercisable and Expiration Date | 7. Title and Amount of Underlying Securities | 7. Title and Amount of Underlying Securities | 8. Price of Derivative Security | 9. Number of Derivative Securities Beneficially Owned | 10. Ownership Form | 11. Nature of Indirect Beneficial Ownership |
| 1. Title of Derivative Security | 2. Conversion or Exercise Price | 3. Transaction Date | 3A. Deemed Execution Date | Code | V | (A) | (D) | Date Exercisable | Expiration Date | Title | Amount or Number of Shares | 8. Price of Derivative Security | 9. Number of Derivative Securities Beneficially Owned | 10. Ownership Form | 11. Nature of Indirect Beneficial Ownership |
| Class B Common Stock | <sup>(1)</sup> | 2026-05-15 |  | J<sup>(1)</sup> |  | 1093998 |  | <sup>(1)</sup> | <sup>(1)</sup> | Class A Common Stock | 1093998 | <sup>(1)</sup> | 1093998 | I | See footnotes<sup>(2)(3)</sup> |
| Series A Preferred Stock | <sup>(1)</sup> | 2026-05-15 |  | C |  |  | 4419405 | <sup>(1)</sup> | <sup>(1)</sup> | Class B Common Stock<sup>(1)</sup> | 4419405 | <sup>(1)</sup> | 0 | I | See footnotes<sup>(2)(3)</sup> |
| Series B Preferred Stock | <sup>(1)</sup> | 2026-05-15 |  | C |  |  | 599465 | <sup>(1)</sup> | <sup>(1)</sup> | Class B Common Stock<sup>(1)</sup> | 599465 | <sup>(1)</sup> | 0 | I | See footnotes<sup>(2)(3)</sup> |
| Series C Preferred Stock | <sup>(1)</sup> | 2026-05-15 |  | C |  |  | 486175 | <sup>(1)</sup> | <sup>(1)</sup> | Class B Common Stock<sup>(1)</sup> | 486175 | <sup>(1)</sup> | 0 | I | See footnotes<sup>(2)(3)</sup> |
| Series D Preferred Stock | <sup>(1)</sup> | 2026-05-15 |  | C |  |  | 309678 | <sup>(1)</sup> | <sup>(1)</sup> | Class B Common Stock<sup>(1)</sup> | 309678 | <sup>(1)</sup> | 0 | I | See footnotes<sup>(2)(3)</sup> |
| Series E Preferred Stock | <sup>(1)</sup> | 2026-05-15 |  | C |  |  | 6548466 | <sup>(1)</sup> | <sup>(1)</sup> | Class B Common Stock<sup>(1)</sup> | 6548466 | <sup>(1)</sup> | 0 | I | See footnotes<sup>(2)(3)</sup> |
| Series F Preferred Stock | <sup>(1)</sup> | 2026-05-15 |  | C |  |  | 9010 | <sup>(1)</sup> | <sup>(1)</sup> | Class B Common Stock<sup>(1)</sup> | 9010 | <sup>(1)</sup> | 0 | I | See footnotes<sup>(2)(3)</sup> |
| Class B Common Stock | <sup>(1)</sup> | 2026-05-15 |  | C |  | 12372199 |  | <sup>(1)</sup> | <sup>(1)</sup> | Class A Common Stock | 12372199 | <sup>(1)</sup> | 13466197 | I | See footnotes<sup>(3)(4)</sup> |

---

### Footnotes:

(1) Immediately prior to the closing of the Issuer's initial public offering, each share of Class A common stock was reclassified, and each share of the Issuer's redeemable convertible preferred stock automatically converted and was reclassified, into one share of Class B Common Stock in an exempt transaction pursuant to Rule 16b-7. Each share of Class B common stock is convertible at any time at the option of the holder into one share of Class A common stock.

(2) Consists of (i) 486,175 shares of Class B common stock underlying Series C Preferred Stock, 309,678 shares of Class B common stock underlying Series D Preferred Stock, and 4,505 shares of Class B common stock underlying Series F Preferred Stock held by Eclipse Continuity Fund I, L.P. ("Eclipse Continuity Fund"); (ii) 6,548,466 shares of Class B common stock underlying Series E Preferred Stock held by Eclipse SPV II, L.P. ("Eclipse SPV II"); (iii) 599,880 shares of Class B common stock held by Eclipse SPV XIII, L.P. ("Eclipse SPV XIII"); and (iv) 494,118 shares of Class B common stock, 4,419,405 shares of Class B common stock underlying Series A Preferred Stock, 599,465 shares of Class B common stock underlying Series B Preferred Stock, and 4,505 shares of Class B common stock underlying Series F Preferred 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").

(3) 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.

(4) Following the transactions reported herein, consists of (i) 800,358 shares of Class B common stock held by Eclipse Continuity Fund, (ii) 6,548,466 shares of Class B common stock held by Eclipse SPV II, (iii) 599,880 shares of Class B common stock held by Eclipse SPV XIII, and (iv) 5,517,493 shares of Class B common stock held by Eclipse Fund.

**Signature:** /s/ Shirley Li,  Attorney-in-Fact  
**Date:** 2026-05-15

### Remarks:

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).

** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).

Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.

**Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.**