# EDGAR Filing Document

**Accession Number:** 0001675124
**File Stem:** 0001193125-26-285642
**Filing Date:** 2026-6
**Character Count:** 38735
**Document Hash:** 0d2cdcb80470d4bf5aa7b988765df53b
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001193125-26-285642.hdr.sgml**: 20260626

**ACCESSION NUMBER**: 0001193125-26-285642

**CONFORMED SUBMISSION TYPE**: SCHEDULE 13D/A

**PUBLIC DOCUMENT COUNT**: 1

**FILED AS OF DATE**: 20260626

**DATE AS OF CHANGE**: 20260626

**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/A
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 005-95722
- **FILM NUMBER:** 261130166

**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/A

**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

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

## SCHEDULE 13D

### Under the Securities Exchange Act of 1934

**(Amendment No. 1)**

**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)*

**06/25/2026**

*(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>**680305.00** |
| 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>**680305.00** |
| 11 | Aggregate amount beneficially owned by each reporting person<br>**680305.00** | Aggregate amount beneficially owned by each reporting person<br>**680305.00** | |
| 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 680,305 shares of Class A common stock (as defined in Item 1(a)). 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 222,850,567 shares of common stock outstanding, consisting of (i) 92,130,188 shares of Class A common stock outstanding as of June 17, 2026, as reported by the Issuer (as defined in Item 1(a) below) in its quarterly report on Form 10-Q filed with the Securities and Exchange Commission (the Commission) on June 24, 2026 (the Form 10-Q), plus (ii) 130,720,379 shares of Class B common stock (the Class B common stock) outstanding as of June 17, 2026, as reported by the Issuer in the Form 10-Q. 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>**680305.00** |
| 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>**680305.00** |
| 11 | Aggregate amount beneficially owned by each reporting person<br>**680305.00** | Aggregate amount beneficially owned by each reporting person<br>**680305.00** | |
| 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 680,305 shares of Class A common stock. 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 222,850,567 shares of common stock outstanding, consisting of (i) 92,130,188 shares of Class A common stock, plus (ii) 130,720,379 shares of Class B common stock outstanding as of June 17, 2026, as reported by the Issuer in the Form 10-Q. 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>**4689870.00** |
| 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>**4689870.00** |
| 11 | Aggregate amount beneficially owned by each reporting person<br>**4689870.00** | Aggregate amount beneficially owned by each reporting person<br>**4689870.00** | |
| 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>**2.1%** | Percent of class represented by amount in Row (11)<br>**2.1%** | |
| 14 | Type of Reporting Person (See Instructions)<br>**OO** | Type of Reporting Person (See Instructions)<br>**OO** | |

---

**Comment for Reporting Person:** Represents 4,689,870 shares of Class A common stock. 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 222,850,567 shares of common stock outstanding, consisting of (i) 92,130,188 shares of Class A common stock, plus (ii) 130,720,379 shares of Class B common stock outstanding as of June 17, 2026, as reported by the Issuer in the Form 10-Q. 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>**4689870.00** |
| 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>**4689870.00** |
| 11 | Aggregate amount beneficially owned by each reporting person<br>**4689870.00** | Aggregate amount beneficially owned by each reporting person<br>**4689870.00** | |
| 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>**2.1%** | Percent of class represented by amount in Row (11)<br>**2.1%** | |
| 14 | Type of Reporting Person (See Instructions)<br>**PN** | Type of Reporting Person (See Instructions)<br>**PN** | |

---

**Comment for Reporting Person:** Represents 4,689,870 shares of Class A common stock. 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 222,850,567 shares of common stock outstanding, consisting of (i) 92,130,188 shares of Class A common stock, plus (ii) 130,720,379 shares of Class B common stock outstanding as of June 17, 2026, as reported by the Issuer in the Form 10-Q. 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>**5566197.00** |
| 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>**5566197.00** |
| 11 | Aggregate amount beneficially owned by each reporting person<br>**5566197.00** | Aggregate amount beneficially owned by each reporting person<br>**5566197.00** | |
| 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 5,566,197 shares of Class A common stock. 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 222,850,567 shares of common stock outstanding, consisting of (i) 92,130,188 shares of Class A common stock, plus (ii) 130,720,379 shares of Class B common stock outstanding as of June 17, 2026, as reported by the Issuer in the Form 10-Q. 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>**5566197.00** |
| 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>**5566197.00** |
| 11 | Aggregate amount beneficially owned by each reporting person<br>**5566197.00** | Aggregate amount beneficially owned by each reporting person<br>**5566197.00** | |
| 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 5,566,197 shares of Class A common stock. 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 222,850,567 shares of common stock outstanding, consisting of (i) 92,130,188 shares of Class A common stock, plus (ii) 130,720,379 shares of Class B common stock outstanding as of June 17, 2026, as reported by the Issuer in the Form 10-Q. 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>[ ] (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>**509898.00** |
| 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>**509898.00** |
| 11 | Aggregate amount beneficially owned by each reporting person<br>**509898.00** | Aggregate amount beneficially owned by each reporting person<br>**509898.00** | |
| 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>**0.2%** | Percent of class represented by amount in Row (11)<br>**0.2%** | |
| 14 | Type of Reporting Person (See Instructions)<br>**OO** | Type of Reporting Person (See Instructions)<br>**OO** | |

---

**Comment for Reporting Person:** Represents 509,898 shares of Class A common stock. 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 222,850,567 shares of common stock outstanding, consisting of (i) 92,130,188 shares of Class A common stock, plus (ii) 130,720,379 shares of Class B common stock outstanding as of June 17, 2026, as reported by the Issuer in the Form 10-Q. 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>**509898.00** |
| 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>**509898.00** |
| 11 | Aggregate amount beneficially owned by each reporting person<br>**509898.00** | Aggregate amount beneficially owned by each reporting person<br>**509898.00** | |
| 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>**0.2%** | Percent of class represented by amount in Row (11)<br>**0.2%** | |
| 14 | Type of Reporting Person (See Instructions)<br>**PN** | Type of Reporting Person (See Instructions)<br>**PN** | |

---

**Comment for Reporting Person:** Represents 509,898 shares of Class A common stock. 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 222,850,567 shares of common stock outstanding, consisting of (i) 92,130,188 shares of Class A common stock, plus (ii) 130,720,379 shares of Class B common stock outstanding as of June 17, 2026, as reported by the Issuer in the Form 10-Q. 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>**133948.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 8 | Shared Voting Power<br>**11446270.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 9 | Sole Dispositive Power<br>**133948.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 10 | Shared Dispositive Power<br>**11446270.00** |
| 11 | Aggregate amount beneficially owned by each reporting person<br>**11580218.00** | Aggregate amount beneficially owned by each reporting person<br>**11580218.00** | |
| 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>**5.2%** | Percent of class represented by amount in Row (11)<br>**5.2%** | |
| 14 | Type of Reporting Person (See Instructions)<br>**IN** | Type of Reporting Person (See Instructions)<br>**IN** | |

---

**Comment for Reporting Person:** Consists of (i) an aggregate of 92,973 shares of Class A common stock held by Mr. Susan, (ii) 40,975 shares of Class A common stock held by an estate-planning vehicle controlled by Mr. Susan, (iii) 680,305 shares of Class A common stock held by Eclipse Continuity I, (iv) 4,689,870 shares of Class A common stock held by Eclipse I, (v) 5,566,197 shares of Class A common stock held by Eclipse SPV II, and (vi) 509,898 shares of Class A common stock held by Eclipse SPV XIII. 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 222,850,567 shares of common stock outstanding, consisting of (i) 92,130,188 shares of Class A common stock, plus (ii) 130,720,379 shares of Class B common stock outstanding as of June 17, 2026, as reported by the Issuer in the Form 10-Q. 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

Explanatory Note:

This Amendment No. 1 amends and supplements the Schedule 13D originally filed with the Commission on May 22, 2026 (the Original Schedule 13D) and is being filed by Eclipse Ventures Fund I, L.P. (Eclipse I), Eclipse Ventures GP I, LLC (Eclipse I GP), Eclipse Continuity Fund I, L.P. (Eclipse Continuity I), Eclipse Continuity GP I, LLC (Eclipse Continuity GP), Eclipse SPV II, L.P. (Eclipse SPV II), Eclipse SPV II GP, LLC (Eclipse SPV II GP), Eclipse SPV XIII, L.P. (Eclipse SPV XIII), Eclipse SPV XIII GP, LLC (Eclipse SPV XIII GP, and together with Eclipse I, Eclipse I GP, Eclipse Continuity I, Eclipse SPV II, Eclipse SPV II GP, Eclipse SPV XIII, the Reporting Entities) and Lior Susan (Mr. Susan), a member of the Issuer's board of directors (the Board). The Reporting Entities and Mr. Susan are collectively referred to as the Reporting Persons. The Reporting Persons expressly disclaim status as a group for purposes of this Schedule 13D. The agreement among the Reporting Persons to file jointly in accordance with the provisions of Rule 13d-1(k)(1) under the Act is attached to the Original Schedule 13D as Exhibit 1. Each Reporting Person disclaims beneficial ownership of all securities reported in this Statement except to the extent of such Reporting Person's pecuniary interest therein, other than those securities reported herein as being held directly by such Reporting Person. Only those items that are hereby reported are amended; all other items reported in the Original Schedule 13D remain unchanged. Information given in response to each item shall be deemed incorporated by reference in all other items, as applicable. Capitalized terms not defined in this Statement have the meanings ascribed to them in the Original Schedule 13D.

**Item 4. Purpose of Transaction**

The information set forth in Item 4 of the Original Schedule 13D is incorporated herein by reference.

**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 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 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 information set forth in Item 6 of the Original Schedule 13D 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:** 06/26/2026

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:** 06/26/2026

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:** 06/26/2026

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:** 06/26/2026

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:** 06/26/2026

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:** 06/26/2026

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:** 06/26/2026

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:** 06/26/2026

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:** 06/26/2026