Benchmark AI Infrastructure Management Co., L.L.C. - 15 May 2026 Form 4 Insider Report for Cerebras Systems Inc. (CBRS)

Reporting relationship: 10%+ Owner
Issuer ticker: CBRS
Reported as of: 15 May 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 19 May 2026, 17:03:06 UTC
Prior SEC filing: 13 May 2026
Next SEC filing: 19 Aug 2026
Source filing: View source filing
Reporting owner signature: /s/ An-Yen Hu, Managing Member of Benchmark AI Infrastructure Management Co., L.L.C.

Key filing fact

Benchmark AI Infrastructure Management Co., L.L.C. filed Form 4 for Cerebras Systems Inc. (CBRS) on 19 May 2026.

Key facts

This page summarizes Benchmark AI Infrastructure Management Co., L.L.C.'s Form 4 filing for Cerebras Systems Inc. (CBRS).
2 reported transactions and 6 derivative rows are listed below.
Accepted by SEC: 19 May 2026, 17:03.

Change

Previous filing in this sequence was filed on 13 May 2026.
Current net transaction value: $0.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (3)

CIK 0002105288 Primary reporting owner

Benchmark AI Infrastructure Management Co., L.L.C.

Relationship: 10%+ Owner
Address: 2965 WOODSIDE ROAD, WOODSIDE
Signature: /s/ An-Yen Hu, Managing Member of Benchmark AI Infrastructure Management Co., L.L.C.
Signature date: 19 May 2026

CIK 0002105287

Benchmark AI Infrastructure Fund, L.P.

Relationship: 10%+ Owner
Address: 2965 WOODSIDE ROAD, WOODSIDE
Signature: /s/ An-Yen Hu, Managing Member of Benchmark AI Infrastructure Management Co., L.L.C., the General Partner of Benchmark AI Infrastructure Fund, L.P.
Signature date: 19 May 2026

CIK 0002105283

Benchmark AI Infrastructure Fund B, L.P.

Relationship: 10%+ Owner
Address: 2965 WOODSIDE ROAD, WOODSIDE
Signature: /s/ An-Yen Hu, Managing Member of Benchmark AI Infrastructure Management Co., L.L.C., the General Partner of Benchmark AI Infrastructure Fund B, L.P.
Signature date: 19 May 2026

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

CBRS transaction Derivative

Series H Preferred Stock

Conversion of derivative security

Transaction value
Shares: -2,527,646
Change %: -100%
Price: $0.000000^*
Shares after: 0
Date: 15 May 2026
Ownership: See Footnote
Underlying class: Class B Common Stock
Underlying amount: 2,527,646
Exercise price
Footnotes: F1, F2

CBRS transaction Derivative

Series H Preferred Stock

Conversion of derivative security

Transaction value
Shares: -2,527,646
Change %: -100%
Price: $0.000000^*
Shares after: 0
Date: 15 May 2026
Ownership: See Footnote
Underlying class: Class B Common Stock
Underlying amount: 2,527,646
Exercise price
Footnotes: F1, F2

CBRS transaction Derivative

Series H Preferred Stock

Conversion of derivative security

Transaction value
Shares: -2,527,646
Change %: -100%
Price: $0.000000^*
Shares after: 0
Date: 15 May 2026
Ownership: See Footnote
Underlying class: Class B Common Stock
Underlying amount: 2,527,646
Exercise price
Footnotes: F1, F2

CBRS transaction Derivative

Class B Common Stock

Conversion of derivative security

Transaction value
Shares: +2,527,646
Change %
Price: $0.000000^*
Shares after: 2,527,646
Date: 15 May 2026
Ownership: See Footnote
Underlying class: Class A Common Stock
Underlying amount: 2,527,646
Exercise price
Footnotes: F2, F3

CBRS transaction Derivative

Class B Common Stock

Conversion of derivative security

Transaction value
Shares: +2,527,646
Change %
Price: $0.000000^*
Shares after: 2,527,646
Date: 15 May 2026
Ownership: See Footnote
Underlying class: Class A Common Stock
Underlying amount: 2,527,646
Exercise price
Footnotes: F2, F3

CBRS transaction Derivative

Class B Common Stock

Conversion of derivative security

Transaction value
Shares: +2,527,646
Change %
Price: $0.000000^*
Shares after: 2,527,646
Date: 15 May 2026
Ownership: See Footnote
Underlying class: Class A Common Stock
Underlying amount: 2,527,646
Exercise price
Footnotes: F2, F3

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

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 3 footnotes

Footnote F1

Each share of Series H Preferred Stock automatically converted into one share of Class B Common Stock upon completion of the Issuer's initial public offering pursuant to its terms and has no expiration date.

Footnote F2

The shares are held by Benchmark AI Infrastructure Fund, L.P. ("AI Infrastructure"), as nominee for itself and Benchmark AI Infrastructure Fund B, L.P. ("AI Infrastructure B"). Benchmark AI Infrastructure Management Co., L.L.C. ("AI Infrastructure MC"), the general partner of each of AI Infrastructure and AI Infrastructure B, may be deemed to have sole voting and dispositive power over such shares. Each entity disclaims the existence of a "group" and disclaims beneficial ownership of the securities, except to the extent of such entity's pecuniary interest in such securities.

Footnote F3

Each share of Class B Common Stock held by the Reporting Person will automatically convert into one share of Class A Common Stock upon the sale or transfer of such share of Class B Common Stock, subject to certain exceptions, and in certain other circumstances described in the Issuer's amended and restated certificate of incorporation. Each share of Class B Common Stock will also be convertible at any time at the option of the Reporting Person into one share of Class A Common Stock.

SEC remarks

This report is one of two reports, each on a separate Form 4, but relating to the same holdings being filed by entities affiliated with Benchmark.

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