# EDGAR Filing Document

**Accession Number:** 0001675124
**File Stem:** 0001193125-26-237003
**Filing Date:** 2026-5
**Character Count:** 42435
**Document Hash:** cab7aeac28a59395de6145c4f00aa43f
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001193125-26-237003.hdr.sgml**: 20260522

**ACCESSION NUMBER**: 0001193125-26-237003

**CONFORMED SUBMISSION TYPE**: SCHEDULE 13D

**PUBLIC DOCUMENT COUNT**: 2

**FILED AS OF DATE**: 20260522

**DATE AS OF CHANGE**: 20260522

**SUBJECT COMPANY**: 

**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

**FILING VALUES:**
- **FORM TYPE:** SCHEDULE 13D
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 005-95722
- **FILM NUMBER:** 261014289

**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
**FILED BY**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Eclipse Continuity GP I, LLC
- **CENTRAL INDEX KEY:** 0001675124

**ORGANIZATION NAME:**
- **EIN:** 000000000
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** SCHEDULE 13D

**BUSINESS ADDRESS:**
- **STREET 1:** 514 HIGH STREET
- **STREET 2:** SUITE 4
- **CITY:** PALO ALTO
- **STATE:** CA
- **ZIP:** 94301
- **BUSINESS PHONE:** (415) 692-1720

**MAIL ADDRESS:**
- **STREET 1:** 514 HIGH STREET
- **STREET 2:** SUITE 4
- **CITY:** PALO ALTO
- **STATE:** CA
- **ZIP:** 94301

### Attached PDF Documents

**Attachment 1:** `ck0000000000-ex99_1.pdf`

_No text found in this document._

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

## SCHEDULE 13D

### Under the Securities Exchange Act of 1934

**Cerebras Systems, Inc.**

*(Name of Issuer)*

**Class A common stock, $0.00001 par value per share**

*(Title of Class of Securities)*

**—**

*(CUSIP Number)*

**Lior Susan, Managing Member**<br>Eclipse Ventures<br>541 High Street, Suite 4<br>Palo Alto CA 94301<br>(650) 720-4667

*(Name, Address and Telephone Number of Person Authorized to Receive Notices and Communications)*

**05/15/2026**

*(Date of Event Which Requires Filing of this Statement)*

| **CUSIP No.** | **—** |

---

| | | | |
|:--|:--|:--|:--|
| 1 | Name of reporting person<br>**Eclipse Continuity GP I, LLC** | Name of reporting person<br>**Eclipse Continuity GP I, LLC** | |
| 2 | Check the appropriate box if a member of a Group (See Instructions)<br>[ ] (a)<br>[x] (b) | Check the appropriate box if a member of a Group (See Instructions)<br>[ ] (a)<br>[x] (b) | |
| 3 | SEC use only | SEC use only | |
| 4 | Source of funds (See Instructions)<br>**AF** | Source of funds (See Instructions)<br>**AF** | |
| 5 | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | |
| 6 | Citizenship or place of organization<br>**DELAWARE** | Citizenship or place of organization<br>**DELAWARE** | |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 7 | Sole Voting Power<br>**0.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 8 | Shared Voting Power<br>**800358.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 9 | Sole Dispositive Power<br>**0.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 10 | Shared Dispositive Power<br>**800358.00** |
| 11 | Aggregate amount beneficially owned by each reporting person<br>**800358.00** | Aggregate amount beneficially owned by each reporting person<br>**800358.00** | |
| 12 | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | |
| 13 | Percent of class represented by amount in Row (11)<br>**0.4%** | Percent of class represented by amount in Row (11)<br>**0.4%** | |
| 14 | Type of Reporting Person (See Instructions)<br>**OO** | Type of Reporting Person (See Instructions)<br>**OO** | |

---

**Comment for Reporting Person:** Represents 800,358 shares of Class B common stock (the Class B common stock) which are convertible at any time at the option of the holder into shares of Class A common stock (as defined in Item 1(a)) on a one-for-one basis. All shares are held by Eclipse Continuity I (as defined in Item 2(a)). Eclipse Continuity GP (as defined in Item 2(a)) is the general partner of Eclipse Continuity I and may be deemed to have voting and dispositive power over the shares held by Eclipse Continuity I. Mr. Susan (as defined in Item 2(a)), a member of the Issuer's Board (as defined in Item 2(a)), is the sole managing member of Eclipse Continuity GP and may be deemed to have voting and dispositive power with respect to these securities.

Based on 219,610,345 shares of common stock outstanding, consisting of (i) 34,500,000 shares of Class A common stock outstanding as of May 15, 2026, following the closing of the Issuer's (as defined in Item 1(a) below) initial public offering of its Class A common stock (the Offering), as reported by the Issuer in its prospectus filed with the United States Securities and Exchange Commission (the Commission) on May 14, 2026 (the Prospectus), which includes the full exercise of the underwriters' option to purchase 4,500,000 additional shares of Class A common stock (the Underwriters' Option), plus (ii) 185,304,949 shares of Class B common stock outstanding as of May 15, 2026, as reported by the Issuer in the Prospectus. The shares of Class A common stock and Class B common stock have the same rights, privileges, preferences, and powers, rank equally (including as to dividends and distributions, and upon any liquidation, dissolution, distribution of assets, or winding up of the Issuer), share ratably and are identical in all respects and as to all matters, except that the holders of shares of Class A common stock are entitled to one vote per share of Class A common stock and the holders of Class B common stock are entitled to twenty votes per share of Class B common stock.

| **CUSIP No.** | **—** |

---

| | | | |
|:--|:--|:--|:--|
| 1 | Name of reporting person<br>**Eclipse Continuity Fund I, L.P.** | Name of reporting person<br>**Eclipse Continuity Fund I, L.P.** | |
| 2 | Check the appropriate box if a member of a Group (See Instructions)<br>[ ] (a)<br>[x] (b) | Check the appropriate box if a member of a Group (See Instructions)<br>[ ] (a)<br>[x] (b) | |
| 3 | SEC use only | SEC use only | |
| 4 | Source of funds (See Instructions)<br>**WC** | Source of funds (See Instructions)<br>**WC** | |
| 5 | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | |
| 6 | Citizenship or place of organization<br>**DELAWARE** | Citizenship or place of organization<br>**DELAWARE** | |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 7 | Sole Voting Power<br>**0.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 8 | Shared Voting Power<br>**800358.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 9 | Sole Dispositive Power<br>**0.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 10 | Shared Dispositive Power<br>**800358.00** |
| 11 | Aggregate amount beneficially owned by each reporting person<br>**800358.00** | Aggregate amount beneficially owned by each reporting person<br>**800358.00** | |
| 12 | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | |
| 13 | Percent of class represented by amount in Row (11)<br>**0.4%** | Percent of class represented by amount in Row (11)<br>**0.4%** | |
| 14 | Type of Reporting Person (See Instructions)<br>**PN** | Type of Reporting Person (See Instructions)<br>**PN** | |

---

**Comment for Reporting Person:** Represents 800,358 shares of Class B common stock which are convertible at any time at the option of the holder into shares of Class A common stock on a one-for-one basis. All shares are held by Eclipse Continuity I. Eclipse Continuity GP is the general partner of Eclipse Continuity I and may be deemed to have voting and dispositive power over the shares held by Eclipse Continuity I. Mr. Susan, a member of the Issuer's Board, is the sole managing member of Eclipse Continuity GP and may be deemed to have voting and dispositive power with respect to these securities.

Based on 219,610,345 shares of common stock outstanding, consisting of (i) 34,500,000 shares of Class A common stock outstanding as of May 15, 2026, following the closing of the Offering, as reported in the Prospectus, which includes the full exercise of the Underwriters' Option, plus (ii) 185,304,949 shares of Class B common stock outstanding as of May 15, 2026, as reported by the Issuer in the Prospectus. The shares of Class A common stock and Class B common stock have the same rights, privileges, preferences, and powers, rank equally (including as to dividends and distributions, and upon any liquidation, dissolution, distribution of assets, or winding up of the Issuer), share ratably and are identical in all respects and as to all matters, except that the holders of shares of Class A common stock are entitled to one vote per share of Class A common stock and the holders of Class B common stock are entitled to twenty votes per share of Class B common stock.

| **CUSIP No.** | **—** |

---

| | | | |
|:--|:--|:--|:--|
| 1 | Name of reporting person<br>**Eclipse Ventures GP I, LLC** | Name of reporting person<br>**Eclipse Ventures GP I, LLC** | |
| 2 | Check the appropriate box if a member of a Group (See Instructions)<br>[ ] (a)<br>[x] (b) | Check the appropriate box if a member of a Group (See Instructions)<br>[ ] (a)<br>[x] (b) | |
| 3 | SEC use only | SEC use only | |
| 4 | Source of funds (See Instructions)<br>**AF** | Source of funds (See Instructions)<br>**AF** | |
| 5 | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | |
| 6 | Citizenship or place of organization<br>**DELAWARE** | Citizenship or place of organization<br>**DELAWARE** | |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 7 | Sole Voting Power<br>**0.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 8 | Shared Voting Power<br>**5517493.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 9 | Sole Dispositive Power<br>**0.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 10 | Shared Dispositive Power<br>**5517493.00** |
| 11 | Aggregate amount beneficially owned by each reporting person<br>**5517493.00** | Aggregate amount beneficially owned by each reporting person<br>**5517493.00** | |
| 12 | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | |
| 13 | Percent of class represented by amount in Row (11)<br>**2.5%** | Percent of class represented by amount in Row (11)<br>**2.5%** | |
| 14 | Type of Reporting Person (See Instructions)<br>**OO** | Type of Reporting Person (See Instructions)<br>**OO** | |

---

**Comment for Reporting Person:** Represents 5,517,493 shares of Class B common stock which are convertible at any time at the option of the holder into shares of Class A common stock on a one-for-one basis. All shares are held by Eclipse I (as defined in Item 2(a)). Eclipse I GP (as defined in Item 2(a)) is the general partner of Eclipse I and may be deemed to have voting and dispositive power over the shares held by Eclipse I. Mr. Susan, a member of the Issuer's Board, is the sole managing member of Eclipse I GP and may be deemed to have voting and dispositive power with respect to these securities.

Based on 219,610,345 shares of common stock outstanding, consisting of (i) 34,500,000 shares of Class A common stock outstanding as of May 15, 2026, following the closing of the Offering, as reported in the Prospectus, which includes the full exercise of the Underwriters' Option, plus (ii) 185,304,949 shares of Class B common stock outstanding as of May 15, 2026, as reported by the Issuer in the Prospectus. The shares of Class A common stock and Class B common stock have the same rights, privileges, preferences, and powers, rank equally (including as to dividends and distributions, and upon any liquidation, dissolution, distribution of assets, or winding up of the Issuer), share ratably and are identical in all respects and as to all matters, except that the holders of shares of Class A common stock are entitled to one vote per share of Class A common stock and the holders of Class B common stock are entitled to twenty votes per share of Class B common stock.

| **CUSIP No.** | **—** |

---

| | | | |
|:--|:--|:--|:--|
| 1 | Name of reporting person<br>**Eclipse Ventures Fund I, L.P.** | Name of reporting person<br>**Eclipse Ventures Fund I, L.P.** | |
| 2 | Check the appropriate box if a member of a Group (See Instructions)<br>[ ] (a)<br>[x] (b) | Check the appropriate box if a member of a Group (See Instructions)<br>[ ] (a)<br>[x] (b) | |
| 3 | SEC use only | SEC use only | |
| 4 | Source of funds (See Instructions)<br>**WC** | Source of funds (See Instructions)<br>**WC** | |
| 5 | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | |
| 6 | Citizenship or place of organization<br>**DELAWARE** | Citizenship or place of organization<br>**DELAWARE** | |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 7 | Sole Voting Power<br>**0.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 8 | Shared Voting Power<br>**5517493.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 9 | Sole Dispositive Power<br>**0.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 10 | Shared Dispositive Power<br>**5517493.00** |
| 11 | Aggregate amount beneficially owned by each reporting person<br>**5517493.00** | Aggregate amount beneficially owned by each reporting person<br>**5517493.00** | |
| 12 | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | |
| 13 | Percent of class represented by amount in Row (11)<br>**2.5%** | Percent of class represented by amount in Row (11)<br>**2.5%** | |
| 14 | Type of Reporting Person (See Instructions)<br>**PN** | Type of Reporting Person (See Instructions)<br>**PN** | |

---

**Comment for Reporting Person:** Represents 5,517,493 shares of Class B common stock which are convertible at any time at the option of the holder into shares of Class A common stock on a one-for-one basis. All shares are held by Eclipse I. Eclipse I GP is the general partner of Eclipse I and may be deemed to have voting and dispositive power over the shares held by Eclipse I. Mr. Susan, a member of the Issuer's Board, is the sole managing member of Eclipse I GP and may be deemed to have voting and dispositive power with respect to these securities.

Based on 219,610,345 shares of common stock outstanding, consisting of (i) 34,500,000 shares of Class A common stock outstanding as of May 15, 2026, following the closing of the Offering, as reported in the Prospectus, which includes the full exercise of the Underwriters' Option, plus (ii) 185,304,949 shares of Class B common stock outstanding as of May 15, 2026, as reported by the Issuer in the Prospectus. The shares of Class A common stock and Class B common stock have the same rights, privileges, preferences, and powers, rank equally (including as to dividends and distributions, and upon any liquidation, dissolution, distribution of assets, or winding up of the Issuer), share ratably and are identical in all respects and as to all matters, except that the holders of shares of Class A common stock are entitled to one vote per share of Class A common stock and the holders of Class B common stock are entitled to twenty votes per share of Class B common stock.

| **CUSIP No.** | **—** |

---

| | | | |
|:--|:--|:--|:--|
| 1 | Name of reporting person<br>**Eclipse SPV II GP, LLC** | Name of reporting person<br>**Eclipse SPV II GP, LLC** | |
| 2 | Check the appropriate box if a member of a Group (See Instructions)<br>[ ] (a)<br>[x] (b) | Check the appropriate box if a member of a Group (See Instructions)<br>[ ] (a)<br>[x] (b) | |
| 3 | SEC use only | SEC use only | |
| 4 | Source of funds (See Instructions)<br>**AF** | Source of funds (See Instructions)<br>**AF** | |
| 5 | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | |
| 6 | Citizenship or place of organization<br>**DELAWARE** | Citizenship or place of organization<br>**DELAWARE** | |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 7 | Sole Voting Power<br>**0.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 8 | Shared Voting Power<br>**6548466.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 9 | Sole Dispositive Power<br>**0.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 10 | Shared Dispositive Power<br>**6548466.00** |
| 11 | Aggregate amount beneficially owned by each reporting person<br>**6548466.00** | Aggregate amount beneficially owned by each reporting person<br>**6548466.00** | |
| 12 | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | |
| 13 | Percent of class represented by amount in Row (11)<br>**3.0%** | Percent of class represented by amount in Row (11)<br>**3.0%** | |
| 14 | Type of Reporting Person (See Instructions)<br>**OO** | Type of Reporting Person (See Instructions)<br>**OO** | |

---

**Comment for Reporting Person:** Represents 6,548,466 shares of Class B common stock which are convertible at any time at the option of the holder into shares of Class A common stock on a one-for-one basis. All shares are held by Eclipse SPV II (as defined in Item 2(a)). Eclipse SPV II GP (as defined in Item 2(a)) is the general partner of Eclipse SPV II and may be deemed to have voting and dispositive power over the shares held by Eclipse SPV II. Mr. Susan, a member of the Issuer's Board, is the sole managing member of Eclipse SPV II GP and may be deemed to have voting and dispositive power with respect to these securities.

Based on 219,610,345 shares of common stock outstanding, consisting of (i) 34,500,000 shares of Class A common stock outstanding as of May 15, 2026, following the closing of the Offering, as reported in the Prospectus, which includes the full exercise of the Underwriters' Option, plus (ii) 185,304,949 shares of Class B common stock outstanding as of May 15, 2026, as reported by the Issuer in the Prospectus. The shares of Class A common stock and Class B common stock have the same rights, privileges, preferences, and powers, rank equally (including as to dividends and distributions, and upon any liquidation, dissolution, distribution of assets, or winding up of the Issuer), share ratably and are identical in all respects and as to all matters, except that the holders of shares of Class A common stock are entitled to one vote per share of Class A common stock and the holders of Class B common stock are entitled to twenty votes per share of Class B common stock.

| **CUSIP No.** | **—** |

---

| | | | |
|:--|:--|:--|:--|
| 1 | Name of reporting person<br>**Eclipse SPV II, L.P.** | Name of reporting person<br>**Eclipse SPV II, L.P.** | |
| 2 | Check the appropriate box if a member of a Group (See Instructions)<br>[ ] (a)<br>[x] (b) | Check the appropriate box if a member of a Group (See Instructions)<br>[ ] (a)<br>[x] (b) | |
| 3 | SEC use only | SEC use only | |
| 4 | Source of funds (See Instructions)<br>**WC** | Source of funds (See Instructions)<br>**WC** | |
| 5 | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | |
| 6 | Citizenship or place of organization<br>**DELAWARE** | Citizenship or place of organization<br>**DELAWARE** | |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 7 | Sole Voting Power<br>**0.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 8 | Shared Voting Power<br>**6548466.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 9 | Sole Dispositive Power<br>**0.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 10 | Shared Dispositive Power<br>**6548466.00** |
| 11 | Aggregate amount beneficially owned by each reporting person<br>**6548466.00** | Aggregate amount beneficially owned by each reporting person<br>**6548466.00** | |
| 12 | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | |
| 13 | Percent of class represented by amount in Row (11)<br>**3.0%** | Percent of class represented by amount in Row (11)<br>**3.0%** | |
| 14 | Type of Reporting Person (See Instructions)<br>**PN** | Type of Reporting Person (See Instructions)<br>**PN** | |

---

**Comment for Reporting Person:** Represents 6,548,466 shares of Class B common stock which are convertible at any time at the option of the holder into shares of Class A common stock on a one-for-one basis. All shares are held by Eclipse SPV II. Eclipse SPV II GP is the general partner of Eclipse SPV II and may be deemed to have voting and dispositive power over the shares held by Eclipse SPV II. Mr. Susan, a member of the Issuer's Board, is the sole managing member of Eclipse SPV II GP and may be deemed to have voting and dispositive power with respect to these securities.

Based on 219,610,345 shares of common stock outstanding, consisting of (i) 34,500,000 shares of Class A common stock outstanding as of May 15, 2026, following the closing of the Offering, as reported in the Prospectus, which includes the full exercise of the Underwriters' Option, plus (ii) 185,304,949 shares of Class B common stock outstanding as of May 15, 2026, as reported by the Issuer in the Prospectus. The shares of Class A common stock and Class B common stock have the same rights, privileges, preferences, and powers, rank equally (including as to dividends and distributions, and upon any liquidation, dissolution, distribution of assets, or winding up of the Issuer), share ratably and are identical in all respects and as to all matters, except that the holders of shares of Class A common stock are entitled to one vote per share of Class A common stock and the holders of Class B common stock are entitled to twenty votes per share of Class B common stock.

| **CUSIP No.** | **—** |

---

| | | | |
|:--|:--|:--|:--|
| 1 | Name of reporting person<br>**Eclipse SPV XIII GP, LLC** | Name of reporting person<br>**Eclipse SPV XIII GP, LLC** | |
| 2 | Check the appropriate box if a member of a Group (See Instructions)<br>[x] (a)<br>[ ] (b) | Check the appropriate box if a member of a Group (See Instructions)<br>[x] (a)<br>[ ] (b) | |
| 3 | SEC use only | SEC use only | |
| 4 | Source of funds (See Instructions)<br>**AF** | Source of funds (See Instructions)<br>**AF** | |
| 5 | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | |
| 6 | Citizenship or place of organization<br>**DELAWARE** | Citizenship or place of organization<br>**DELAWARE** | |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 7 | Sole Voting Power<br>**0.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 8 | Shared Voting Power<br>**599880.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 9 | Sole Dispositive Power<br>**0.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 10 | Shared Dispositive Power<br>**599880.00** |
| 11 | Aggregate amount beneficially owned by each reporting person<br>**599880.00** | Aggregate amount beneficially owned by each reporting person<br>**599880.00** | |
| 12 | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | |
| 13 | Percent of class represented by amount in Row (11)<br>**0.3%** | Percent of class represented by amount in Row (11)<br>**0.3%** | |
| 14 | Type of Reporting Person (See Instructions)<br>**OO** | Type of Reporting Person (See Instructions)<br>**OO** | |

---

**Comment for Reporting Person:** Represents 599,880 shares of Class B common stock which are convertible at any time at the option of the holder into shares of Class A common stock on a one-for-one basis. All shares are held by Eclipse SPV XIII (as defined in Item 2(a)). Eclipse SPV XIII GP (as defined in Item 2(a)) is the general partner of Eclipse SPV XIII and may be deemed to have voting and dispositive power over the shares held by Eclipse SPV XIII. Mr. Susan, a member of the Issuer's Board, is the sole managing member of Eclipse SPV XIII GP and may be deemed to have voting and dispositive power with respect to these securities.

Based on 219,610,345 shares of common stock outstanding, consisting of (i) 34,500,000 shares of Class A common stock outstanding as of May 15, 2026, following the closing of the Offering, as reported in the Prospectus, which includes the full exercise of the Underwriters' Option, plus (ii) 185,304,949 shares of Class B common stock outstanding as of May 15, 2026, as reported by the Issuer in the Prospectus. The shares of Class A common stock and Class B common stock have the same rights, privileges, preferences, and powers, rank equally (including as to dividends and distributions, and upon any liquidation, dissolution, distribution of assets, or winding up of the Issuer), share ratably and are identical in all respects and as to all matters, except that the holders of shares of Class A common stock are entitled to one vote per share of Class A common stock and the holders of Class B common stock are entitled to twenty votes per share of Class B common stock.

| **CUSIP No.** | **—** |

---

| | | | |
|:--|:--|:--|:--|
| 1 | Name of reporting person<br>**Eclipse SPV XIII, L.P.** | Name of reporting person<br>**Eclipse SPV XIII, L.P.** | |
| 2 | Check the appropriate box if a member of a Group (See Instructions)<br>[ ] (a)<br>[x] (b) | Check the appropriate box if a member of a Group (See Instructions)<br>[ ] (a)<br>[x] (b) | |
| 3 | SEC use only | SEC use only | |
| 4 | Source of funds (See Instructions)<br>**WC** | Source of funds (See Instructions)<br>**WC** | |
| 5 | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | |
| 6 | Citizenship or place of organization<br>**DELAWARE** | Citizenship or place of organization<br>**DELAWARE** | |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 7 | Sole Voting Power<br>**0.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 8 | Shared Voting Power<br>**599880.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 9 | Sole Dispositive Power<br>**0.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 10 | Shared Dispositive Power<br>**599880.00** |
| 11 | Aggregate amount beneficially owned by each reporting person<br>**599880.00** | Aggregate amount beneficially owned by each reporting person<br>**599880.00** | |
| 12 | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | |
| 13 | Percent of class represented by amount in Row (11)<br>**0.3%** | Percent of class represented by amount in Row (11)<br>**0.3%** | |
| 14 | Type of Reporting Person (See Instructions)<br>**PN** | Type of Reporting Person (See Instructions)<br>**PN** | |

---

**Comment for Reporting Person:** Represents 599,880 shares of Class B common stock which are convertible at any time at the option of the holder into shares of Class A common stock on a one-for-one basis. All shares are held by Eclipse SPV XIII. Eclipse SPV XIII GP is the general partner of Eclipse SPV XIII and may be deemed to have voting and dispositive power over the shares held by Eclipse SPV XIII. Mr. Susan, a member of the Issuer's Board, is the sole managing member of Eclipse SPV XIII GP and may be deemed to have voting and dispositive power with respect to these securities.

Based on 219,610,345 shares of common stock outstanding, consisting of (i) 34,500,000 shares of Class A common stock outstanding as of May 15, 2026, following the closing of the Offering, as reported in the Prospectus, which includes the full exercise of the Underwriters' Option, plus (ii) 185,304,949 shares of Class B common stock outstanding as of May 15, 2026, as reported by the Issuer in the Prospectus. The shares of Class A common stock and Class B common stock have the same rights, privileges, preferences, and powers, rank equally (including as to dividends and distributions, and upon any liquidation, dissolution, distribution of assets, or winding up of the Issuer), share ratably and are identical in all respects and as to all matters, except that the holders of shares of Class A common stock are entitled to one vote per share of Class A common stock and the holders of Class B common stock are entitled to twenty votes per share of Class B common stock.

| **CUSIP No.** | **—** |

---

| | | | |
|:--|:--|:--|:--|
| 1 | Name of reporting person<br>**Lior Susan** | Name of reporting person<br>**Lior Susan** | |
| 2 | Check the appropriate box if a member of a Group (See Instructions)<br>[ ] (a)<br>[x] (b) | Check the appropriate box if a member of a Group (See Instructions)<br>[ ] (a)<br>[x] (b) | |
| 3 | SEC use only | SEC use only | |
| 4 | Source of funds (See Instructions)<br>**AF** | Source of funds (See Instructions)<br>**AF** | |
| 5 | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | |
| 6 | Citizenship or place of organization<br>**X1** | Citizenship or place of organization<br>**X1** | |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 7 | Sole Voting Power<br>**0.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 8 | Shared Voting Power<br>**13466197.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 9 | Sole Dispositive Power<br>**0.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 10 | Shared Dispositive Power<br>**13466197.00** |
| 11 | Aggregate amount beneficially owned by each reporting person<br>**13466197.00** | Aggregate amount beneficially owned by each reporting person<br>**13466197.00** | |
| 12 | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | |
| 13 | Percent of class represented by amount in Row (11)<br>**6.1%** | Percent of class represented by amount in Row (11)<br>**6.1%** | |
| 14 | Type of Reporting Person (See Instructions)<br>**IN** | Type of Reporting Person (See Instructions)<br>**IN** | |

---

**Comment for Reporting Person:** Consists of (i) 800,358 shares of Class B common stock held by Eclipse Continuity I, (ii) 5,517,493 shares of Class B common stock held by Eclipse I, (iii) 6,548,466 shares of Class B common stock held by Eclipse SPV II, and (iv) 599,880 shares of Class B common stock held by Eclipse SPV XIII. The Class B common stock is convertible at any time at the option of the holder into shares of Class A common stock on a one-for-one basis. Eclipse Continuity GP is the general partner of Eclipse Continuity I and may be deemed to have voting and dispositive power over the shares held by Eclipse Continuity I. Eclipse I GP is the general partner of Eclipse I and may be deemed to have voting and dispositive power over the shares held by Eclipse I. Eclipse SPV II GP is the general partner of Eclipse SPV II and may be deemed to have voting and dispositive power over the shares held by Eclipse SPV II. Eclipse SPV XIII GP is the general partner of Eclipse SPV XIII and may be deemed to have voting and dispositive power over the shares held by Eclipse SPV XIII. Mr. Susan, a member of the Issuer's Board, is the sole managing member of each of Eclipse Continuity GP, Eclipse I GP, Eclipse SPV II GP, and Eclipse SPV XIII GP and may be deemed to have voting and dispositive power with respect to the shares held by each of Eclipse Continuity I, Eclipse I, Eclipse SPV II, and Eclipse SPV XIII.

Based on 219,610,345 shares of common stock outstanding, consisting of (i) 34,500,000 shares of Class A common stock outstanding as of May 15, 2026, following the closing of the Offering, as reported in the Prospectus, which includes the full exercise of the Underwriters' Option, plus (ii) 185,304,949 shares of Class B common stock outstanding as of May 15, 2026, as reported by the Issuer in the Prospectus. The shares of Class A common stock and Class B common stock have the same rights, privileges, preferences, and powers, rank equally (including as to dividends and distributions, and upon any liquidation, dissolution, distribution of assets, or winding up of the Issuer), share ratably and are identical in all respects and as to all matters, except that the holders of shares of Class A common stock are entitled to one vote per share of Class A common stock and the holders of Class B common stock are entitled to twenty votes per share of Class B common stock.

**Item 1. Security and Issuer**

**(a) Title of Class of Securities:**
Class A common stock, $0.00001 par value per share

**(b) Name of Issuer:**
Cerebras Systems, Inc.

**(c) Address of Issuer's Principal Executive Offices:**
1237 E. Arques Avenue, Sunnyvale, CA, 94085

**Item 4. Purpose of Transaction**

The information set forth in Item 3 of this Statement is incorporated herein by reference. The Reporting Persons hold the securities of the Issuer for general investment purposes. The Reporting Persons may, from time to time, depending on prevailing market, economic and other conditions, acquire additional shares of Class A Common Stock or other securities of the Issuer, dispose of any such securities, or engage in discussions with the Issuer concerning such acquisitions or dispositions or further investments in the Issuer. The Reporting Persons intend to review their investment in the Issuer on a continuing basis and, depending upon the price and availability of shares of Class A Common Stock or other securities of the Issuer, subsequent developments affecting the Issuer, the Issuer's business and prospects, other investment and business opportunities available to the Reporting Persons, general stock market and economic conditions, tax considerations and other factors considered relevant, may decide at any time to increase or to decrease the size of their investment in the Issuer in the open market, in privately negotiated transactions, pursuant to 10b5-1 trading plans or otherwise.

Except as set forth above, the Reporting Persons have no present plans or intentions which would result in or relate to any of the transactions described in subparagraphs (a) through (j) of Item 4 of Schedule 13D.

**Item 5. Interest in Securities of the Issuer**

**(a)**
See Items 7-11 of the cover pages of this Statement and Item 2 above. Except to the extent of his, hers, or its pecuniary interest therein, each Reporting Person disclaims beneficial ownership of such shares of Common Stock, except for the shares, if any, such Reporting Person holds of record.

**(b)**
See Items 7-11 of the cover pages of this Statement and Item 2 above. Except to the extent of his, hers, or its pecuniary interest therein, each Reporting Person disclaims beneficial ownership of such shares of Common Stock, except for the shares, if any, such Reporting Person holds of record.

**(c)**
Except as reported in this Statement, none of the Reporting Persons has effected any transactions in the Issuer's securities within the past 60 days.

**Item 6. Contracts, Arrangements, Understandings or Relationships With Respect to Securities of the Issuer.**

The Reporting Persons and certain of the Issuer's other investors entered into the Amended and Restated Investors Rights Agreement, dated January 28, 2026 (the Rights Agreement). Following the closing of the Offering, the stockholders party thereto are entitled to certain registration rights, including the right to demand that the Issuer file a registration statement or request that their shares be covered by a registration statement that the Issuer is otherwise filing. The terms and provisions of the Rights Agreement are described more fully in the Issuer's Registration Statement on Form S-1 (File No. 333-295145) and declared effective by the Commission on May 13, 2026 (the Registration Statement), and the above summary is qualified by reference to such description and the full text of the Rights Agreement, which is filed as Exhibit 2 to this Statement and is incorporated herein by reference.

In connection with the Offering, each of the Reporting Persons entered into lock-up agreements, pursuant to which the Reporting Persons have agreed, subject to certain exceptions, not to sell, transfer or otherwise convey any of the Issuer's securities held by each of the Reporting Persons for 180 days following the date of the underwriting agreement for the Offering. The terms and provisions of such lock-up agreements are described more fully in the Registration Statement, and the above summary is qualified by reference to such description and the full text of the lock-up agreement, a form of which is filed as Exhibit 3 to this Statement as attached as Exhibit A to the Underwriting Agreement filed with to the Registration Statement and is incorporated herein by reference.

### SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

**Reporting Person:** Eclipse Continuity GP I, LLC

**Signature:** /s/ Lior Susan

**Name/Title:** Lior Susan, Managing Member

**Date:** 05/22/2026

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

**Reporting Person:** Eclipse Continuity Fund I, L.P.

**Signature:** /s/ Lior Susan

**Name/Title:** Lior Susan, Managing Member

**Date:** 05/22/2026

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

**Reporting Person:** Eclipse Ventures GP I, LLC

**Signature:** /s/ Lior Susan

**Name/Title:** Lior Susan, Managing Member

**Date:** 05/22/2026

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

**Reporting Person:** Eclipse Ventures Fund I, L.P.

**Signature:** /s/ Lior Susan

**Name/Title:** Lior Susan, Managing Member

**Date:** 05/22/2026

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

**Reporting Person:** Eclipse SPV II GP, LLC

**Signature:** /s/ Lior Susan

**Name/Title:** Lior Susan, Managing Member

**Date:** 05/22/2026

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

**Reporting Person:** Eclipse SPV II, L.P.

**Signature:** /s/ Lior Susan

**Name/Title:** Lior Susan, Managing Member

**Date:** 05/22/2026

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

**Reporting Person:** Eclipse SPV XIII GP, LLC

**Signature:** /s/ Lior Susan

**Name/Title:** Lior Susan, Managing Member

**Date:** 05/22/2026

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

**Reporting Person:** Eclipse SPV XIII, L.P.

**Signature:** /s/ Lior Susan

**Name/Title:** Lior Susan, Managing Member

**Date:** 05/22/2026

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

**Reporting Person:** Lior Susan

**Signature:** /s/ Lior Susan

**Name/Title:** Lior Susan

**Date:** 05/22/2026