# EDGAR Filing Document

**Accession Number:** 0002021728
**File Stem:** 0001628280-26-035744
**Filing Date:** 2026-5
**Character Count:** 9694
**Document Hash:** f9a41ce41840b6fc8928c1cd2694757f
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001628280-26-035744.hdr.sgml**: 20260515

**ACCESSION NUMBER**: 0001628280-26-035744

**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:** Vassallo Steven
- **CENTRAL INDEX KEY:** 0001567929

**ORGANIZATION NAME:**

**FILING VALUES:**
- **FORM TYPE:** 4
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-43284
- **FILM NUMBER:** 26990283

**MAIL ADDRESS:**
- **STREET 1:** C/O FOUNDATION CAPITAL
- **STREET 2:** 250 MIDDLEFIELD ROAD
- **CITY:** MENLO PARK
- **STATE:** CA
- **ZIP:** 94025
**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>Vassallo Steven<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 [ ] 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 |
|  |  |  |  |  |  |  |  |  |  |  |

---

## 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 |
| Series A Preferred Stock | <sup>(1)</sup> | 2026-05-15 |  | C |  |  | 12588235 | <sup>(1)</sup> | <sup>(1)</sup> | Class B Common Stock<sup>(1)</sup> | 12588235 | <sup>(1)</sup> | 0 | I | See footnotes:<sup>(2)(3)(4)</sup> |
| Series B Preferred Stock | <sup>(1)</sup> | 2026-05-15 |  | C |  |  | 1425394 | <sup>(1)</sup> | <sup>(1)</sup> | Class B Common Stock<sup>(1)</sup> | 1425394 | <sup>(1)</sup> | 0 | I | See footnotes:<sup>(2)(3)(4)</sup> |
| Series C Preferred Stock | <sup>(1)</sup> | 2026-05-15 |  | C |  |  | 111765 | <sup>(1)</sup> | <sup>(1)</sup> | Class B Common Stock<sup>(1)</sup> | 111765 | <sup>(1)</sup> | 0 | I | See footnotes:<sup>(2)(3)(4)</sup> |
| Series D Preferred Stock | <sup>(1)</sup> | 2026-05-15 |  | C |  |  | 30968 | <sup>(1)</sup> | <sup>(1)</sup> | Class B Common Stock<sup>(1)</sup> | 30968 | <sup>(1)</sup> | 0 | I | See footnotes:<sup>(2)(3)(4)</sup> |
| Series E Preferred Stock | <sup>(1)</sup> | 2026-05-15 |  | C |  |  | 1145981 | <sup>(1)</sup> | <sup>(1)</sup> | Class B Common Stock<sup>(1)</sup> | 1145981 | <sup>(1)</sup> | 0 | I | See footnotes<sup>(2)(3)(4)</sup> |
| Class B Common Stock | <sup>(1)</sup> | 2026-05-15 |  | C |  | 15302343 |  | <sup>(1)</sup> | <sup>(1)</sup> | Class A Common Stock | 15302343 | <sup>(1)</sup> | 15302343 | I | See footnotes:<sup>(4)(5)</sup> |

---

### Footnotes:

(1) Immediately prior to the closing of the Issuer's initial public offering, 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) 1,091,411 shares of Class B common stock underlying Series E Preferred Stock held by Foundation Capital Leadership Fund II, L.P. ("Foundation Leadership Fund"); (ii) 265,414 shares of Class B common stock underlying Series A Preferred Stock, 30,053 shares of Class B common stock underlying Series B Preferred Stock, 2,356 shares of Class B common stock underlying Series C Preferred Stock, 653 shares of Class B common stock underlying Series D Preferred Stock, and 1,151 shares of Class B common stock underlying Series E Preferred Stock held by Foundation Capital VIII Principals Fund, LLC ("Foundation Capital VIII Principals");...(continued in footnote 3)

(3) (continued from footnote 2)...and (iii) 12,322,821 shares of Class B common stock underlying Series A Preferred Stock, 1,395,341 shares of Class B common stock underlying Series B Preferred Stock, 109,409 shares of Class B common stock underlying Series C Preferred Stock, 30,315 shares of Class B common stock underlying Series D Preferred Stock, and 53,419 shares of Class B common stock underlying Series E Preferred Stock held by Foundation Capital VIII, L.P. ("Foundation Capital VIII," and together with Foundation Leadership Fund and Foundation Capital VIII Principals, "Foundation Capital").

(4) Foundation Capital Management Co. VIII, L.L.C. is the General Partner of Foundation Capital VIII and the Manager of Foundation Capital VIII Principals and has sole voting and investment power with respect to the securities held by Foundation Capital VIII and Foundation Capital Principals. Steven P. Vassallo is a Manager of Foundation Capital Management Co. VIII, L.L.C. and may be deemed to beneficially own such shares. Foundation Capital Management Co. LF II, L.L.C. is the General Partner of Foundation Capital Leadership Fund and has sole voting and investment power with respect to the securities held by Foundation Capital Leadership Fund. Mr. Vassallo is a Manager of Foundation Capital Management Co. LF II, L.L.C. and may be deemed to beneficially own such shares. Mr. Vassallo disclaims beneficial ownership of the securities reported herein, except to the extent of his pecuniary interest therein.

(5) Following the transactions reported herein, consists of (i) 1,091,411 shares of Class B common stock held by Foundation Leadership Fund, (ii) 299,627 shares of Class B common stock held by Foundation Capital VIII Principals, and (iii) 13,911,305 shares of Class B common stock held by Foundation Capital VIII.

**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.**