Andrew D. Feldman - 21 Aug 2026 Form 4 Insider Report for Cerebras Systems Inc. (CBRS)

Reporting relationship: CEO, President, Director
Issuer ticker: CBRS
Reported as of: 21 Aug 2026
Net transaction value: -$47,338,835
SEC form: 4
Accepted by SEC: 25 Aug 2026, 18:13:47 UTC
Prior SEC filing: 19 Aug 2026
Source filing: View source filing
Reporting owner signature: /s/ Robert Mills, Attorney-in-fact

Key filing fact

Andrew D. Feldman filed Form 4 for Cerebras Systems Inc. (CBRS) on 25 Aug 2026.

Key facts

This page summarizes Andrew D. Feldman's Form 4 filing for Cerebras Systems Inc. (CBRS).
21 reported transactions and 7 derivative rows are listed below.
Accepted by SEC: 25 Aug 2026, 18:13.

Change

Previous filing in this sequence was filed on 19 Aug 2026.
Current net transaction value: -$47,338,835.

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 (1)

CIK 0002039573 Primary reporting owner

Feldman Andrew D.

Relationship: CEO, President, Director
Address: C/O CEREBRAS SYSTEMS INC., 1237 E. ARQUES AVENUE, SUNNYVALE
Signature: /s/ Robert Mills, Attorney-in-fact
Signature date: 25 Aug 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

CBRS transaction

Class A Common Stock

Gift

Transaction value
Shares: -50,000
Change %: -75%
Price
Shares after: 16,853
Date: 21 Aug 2026
Ownership: Direct
Footnotes: F1, F2

CBRS transaction

Class A Common Stock

Conversion of derivative security

Transaction value
Shares: +237,559
Change %: +1410%
Price: $0.000000^*
Shares after: 254,412
Date: 21 Aug 2026
Ownership: Direct
Footnotes: F2

CBRS transaction

Class A Common Stock

Sale

Transaction value: $8,545,099
Shares: -43,553
Change %: -17%
Price: $196.20
Shares after: 210,859
Date: 21 Aug 2026
Ownership: Direct
Footnotes: F3, F4

CBRS transaction

Class A Common Stock

Sale

Transaction value: $4,207,067
Shares: -21,307
Change %: -10%
Price: $197.45
Shares after: 189,552
Date: 21 Aug 2026
Ownership: Direct
Footnotes: F3, F5

CBRS transaction

Class A Common Stock

Sale

Transaction value: $6,512,988
Shares: -32,864
Change %: -17%
Price: $198.18
Shares after: 156,688
Date: 21 Aug 2026
Ownership: Direct
Footnotes: F3, F6

CBRS transaction

Class A Common Stock

Sale

Transaction value: $13,203,021
Shares: -66,237
Change %: -42%
Price: $199.33
Shares after: 90,451
Date: 21 Aug 2026
Ownership: Direct
Footnotes: F3, F7

CBRS transaction

Class A Common Stock

Sale

Transaction value: $6,719,365
Shares: -33,575
Change %: -37%
Price: $200.13
Shares after: 56,876
Date: 21 Aug 2026
Ownership: Direct
Footnotes: F3, F8

CBRS transaction

Class A Common Stock

Sale

Transaction value: $1,776,292
Shares: -8,832
Change %: -16%
Price: $201.12
Shares after: 48,044
Date: 21 Aug 2026
Ownership: Direct
Footnotes: F3, F9

CBRS transaction

Class A Common Stock

Sale

Transaction value: $1,355,074
Shares: -6,699
Change %: -14%
Price: $202.28
Shares after: 41,345
Date: 21 Aug 2026
Ownership: Direct
Footnotes: F3, F10

CBRS transaction

Class A Common Stock

Sale

Transaction value: $2,459,150
Shares: -12,092
Change %: -29%
Price: $203.37
Shares after: 29,253
Date: 21 Aug 2026
Ownership: Direct
Footnotes: F3, F11

CBRS transaction

Class A Common Stock

Sale

Transaction value: $981,312
Shares: -4,800
Change %: -16%
Price: $204.44
Shares after: 24,453
Date: 21 Aug 2026
Ownership: Direct
Footnotes: F3, F12

CBRS transaction

Class A Common Stock

Sale

Transaction value: $328,512
Shares: -1,600
Change %: -6.5%
Price: $205.32
Shares after: 22,853
Date: 21 Aug 2026
Ownership: Direct
Footnotes: F3, F13

CBRS transaction

Class A Common Stock

Sale

Transaction value: $290,192
Shares: -1,400
Change %: -6.1%
Price: $207.28
Shares after: 21,453
Date: 21 Aug 2026
Ownership: Direct
Footnotes: F3, F14

CBRS transaction

Class A Common Stock

Sale

Transaction value: $959,503
Shares: -4,594
Change %: -21%
Price: $208.86
Shares after: 16,859
Date: 21 Aug 2026
Ownership: Direct
Footnotes: F3, F15

CBRS transaction

Class A Common Stock

Sale

Transaction value: $1,261
Shares: -6
Change %: -0.04%
Price: $210.21
Shares after: 16,853
Date: 21 Aug 2026
Ownership: Direct
Footnotes: F3

CBRS transaction

Class A Common Stock

Other

Transaction value
Shares: +120
Change %: +21%
Price: $0.000000^*
Shares after: 686
Date: 24 Aug 2026
Ownership: By Feldman Bravo Family Trust
Footnotes: F16

Reported derivative securities

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

CBRS transaction Derivative

Stock Option

Options Exercise

Transaction value
Shares: -62,674
Change %: -42%
Price: $0.000000^*
Shares after: 87,326
Date: 21 Aug 2026
Ownership: Direct
Underlying class: Class B Common Stock
Underlying amount: 62,674
Exercise price: $5.02
Footnotes: F17

CBRS transaction Derivative

Stock Option

Options Exercise

Transaction value
Shares: -137,326
Change %: -92%
Price: $0.000000^*
Shares after: 12,674
Date: 21 Aug 2026
Ownership: Direct
Underlying class: Class B Common Stock
Underlying amount: 137,326
Exercise price: $7.89
Footnotes: F18

CBRS transaction Derivative

Stock Option

Options Exercise

Transaction value
Shares: -37,559
Change %: -6.3%
Price: $0.000000^*
Shares after: 562,441
Date: 21 Aug 2026
Ownership: Direct
Underlying class: Class B Common Stock
Underlying amount: 37,559
Exercise price: $2.72
Footnotes: F18

CBRS transaction Derivative

Class B Common Stock

Options Exercise

Transaction value
Shares: +237,559
Change %: +1.7%
Price: $0.000000^*
Shares after: 14,182,693
Date: 21 Aug 2026
Ownership: Direct
Underlying class: Class A Common Stock
Underlying amount: 237,559
Exercise price
Footnotes: F2

CBRS transaction Derivative

Class B Common Stock

Conversion of derivative security

Transaction value
Shares: -237,559
Change %: -1.7%
Price: $0.000000^*
Shares after: 13,945,134
Date: 21 Aug 2026
Ownership: Direct
Underlying class: Class A Common Stock
Underlying amount: 237,559
Exercise price
Footnotes: F2

CBRS holding Derivative

Class B Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 50,000
Date: 21 Aug 2026
Ownership: By GRAT 1
Underlying class: Class A Common Stock
Underlying amount: 50,000
Exercise price
Footnotes: F2

CBRS holding Derivative

Class B Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 50,000
Date: 21 Aug 2026
Ownership: By GRAT 2
Underlying class: Class A Common Stock
Underlying amount: 50,000
Exercise price
Footnotes: F2

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

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 18 footnotes

Footnote F1

The reporting person transferred 50,000 shares of the Issuer's common stock to a donor-advised fund sponsored by a charitable organization under Section 501(c)(3) of the Internal Revenue Code.

Footnote F2

The Class B Common Stock is convertible into an equal number of Class A Common Stock at any time, at the Reporting Person's election, and has no expiration date.

Footnote F3

The sale reported on this Form 4 represents shares sold by the Reporting Person pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on May 20, 2026.

Footnote F4

The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $195.75 to $196.74, inclusive. Upon request by the staff of the Securities and Exchange commission, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price.

Footnote F5

The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $196.75 to $197.74, inclusive. Upon request by the staff of the Securities and Exchange commission, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price.

Footnote F6

The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $197.75 to $198.74, inclusive. Upon request by the staff of the Securities and Exchange commission, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price.

Footnote F7

The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $198.75 to $199.74, inclusive. Upon request by the staff of the Securities and Exchange commission, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price.

Footnote F8

The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $199.75 to $200.74, inclusive. Upon request by the staff of the Securities and Exchange commission, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price.

Footnote F9

The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $200.75 to $201.72, inclusive. Upon request by the staff of the Securities and Exchange commission, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price.

Footnote F10

The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $201.86 to $202.83, inclusive. Upon request by the staff of the Securities and Exchange commission, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price.

Footnote F11

The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $202.90 to $203.87, inclusive. Upon request by the staff of the Securities and Exchange commission, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price.

Footnote F12

The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $203.92 to $204.87, inclusive. Upon request by the staff of the Securities and Exchange commission, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price.

Footnote F13

The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $204.96 to $205.67, inclusive. Upon request by the staff of the Securities and Exchange commission, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price.

Footnote F14

The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $206.81to $207.59, inclusive. Upon request by the staff of the Securities and Exchange commission, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price.

Footnote F15

The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $208.42 to $209.00, inclusive. Upon request by the staff of the Securities and Exchange commission, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price.

Footnote F16

Represents a pro-rata, in-kind distribution not for additional consideration.

Footnote F17

The stock option vests in 48 substantially equal monthly installments beginning on February 1, 2023.

Footnote F18

The stock option is fully vested and exercisable.