=== SEC Form 4 — Statement of Changes in Beneficial Ownership ===
Document Type: 4
Period of Report: 2026-06-25
10b5-1 Pre-arranged Plan: No
--- Issuer ---
Name: Cerebras Systems Inc. (CBRS)
CIK: 0002021728
--- Reporting Owner ---
Name: Mallick Dhiraj
CIK: 0002039572
Role: Officer (Chief Operating Officer)
--- Non-Derivative Transactions ---
[Transaction #1]
Security: Class A Common Stock
Date: 2026-06-25 | Code: S (Open market sale)
Shares: -184 | Price: $175.61
Total Value: $32,312.24
Shares Owned After: 33,130 | Ownership: D (Direct)
[Transaction #2]
Security: Class A Common Stock
Date: 2026-06-25 | Code: S (Open market sale)
Shares: -230 | Price: $178.92
Total Value: $41,151.60
Shares Owned After: 32,900 | Ownership: D (Direct)
Footnotes:
[F1] The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $178.69 to $179.10, 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.
[Transaction #3]
Security: Class A Common Stock
Date: 2026-06-25 | Code: S (Open market sale)
Shares: -606 | Price: $180.19
Total Value: $109,195.14
Shares Owned After: 32,294 | Ownership: D (Direct)
Footnotes:
[F2] The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $179.81 to $180.58, 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.
[Transaction #4]
Security: Class A Common Stock
Date: 2026-06-25 | Code: S (Open market sale)
Shares: -330 | Price: $181.17
Total Value: $59,786.10
Shares Owned After: 31,964 | Ownership: D (Direct)
Footnotes:
[F3] The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $181.02 to $181.26, 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.
[Transaction #5]
Security: Class A Common Stock
Date: 2026-06-25 | Code: S (Open market sale)
Shares: -138 | Price: $182.50
Total Value: $25,185.00
Shares Owned After: 31,826 | Ownership: D (Direct)
[Transaction #6]
Security: Class A Common Stock
Date: 2026-06-25 | Code: S (Open market sale)
Shares: -1,074 | Price: $184.30
Total Value: $197,938.20
Shares Owned After: 30,752 | Ownership: D (Direct)
Footnotes:
[F4] The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $183.66 to $184.61, 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.
[Transaction #7]
Security: Class A Common Stock
Date: 2026-06-25 | Code: S (Open market sale)
Shares: -7,282 | Price: $185.19
Total Value: $1,348,553.58
Shares Owned After: 23,470 | Ownership: D (Direct)
Footnotes:
[F5] The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $184.67 to $185.56, 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.
[Transaction #8]
Security: Class A Common Stock
Date: 2026-06-25 | Code: S (Open market sale)
Shares: -1,618 | Price: $186.23
Total Value: $301,320.14
Shares Owned After: 21,852 | Ownership: D (Direct)
Footnotes:
[F6] The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $185.68 to $186.66, 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.
[Transaction #9]
Security: Class A Common Stock
Date: 2026-06-25 | Code: S (Open market sale)
Shares: -1,752 | Price: $186.85
Total Value: $327,361.20
Shares Owned After: 20,100 | Ownership: D (Direct)
Footnotes:
[F7] The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $186.68 to $186.94, 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.
[Transaction #10]
Security: Class A Common Stock
Date: 2026-06-25 | Code: S (Open market sale)
Shares: -100 | Price: $187.90
Total Value: $18,790.00
Shares Owned After: 20,000 | Ownership: D (Direct)
[Transaction #11]
Security: Class A Common Stock
Date: 2026-06-26 | Code: S (Open market sale)
Shares: -200 | Price: $161.46
Total Value: $32,292.00
Shares Owned After: 19,800 | Ownership: D (Direct)
Footnotes:
[F8] The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $161.30 to $161.61, 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.
[Transaction #12]
Security: Class A Common Stock
Date: 2026-06-26 | Code: S (Open market sale)
Shares: -300 | Price: $162.75
Total Value: $48,825.00
Shares Owned After: 19,500 | Ownership: D (Direct)
Footnotes:
[F9] The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $162.44 to $162.95, 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.
[Transaction #13]
Security: Class A Common Stock
Date: 2026-06-26 | Code: S (Open market sale)
Shares: -400 | Price: $163.90
Total Value: $65,560.00
Shares Owned After: 19,100 | Ownership: D (Direct)
Footnotes:
[F10] The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $163.44 to $164.28, 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.
[Transaction #14]
Security: Class A Common Stock
Date: 2026-06-26 | Code: S (Open market sale)
Shares: -300 | Price: $165.09
Total Value: $49,527.00
Shares Owned After: 18,800 | Ownership: D (Direct)
Footnotes:
[F11] The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $164.94 to $165.40, 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.
[Transaction #15]
Security: Class A Common Stock
Date: 2026-06-26 | Code: S (Open market sale)
Shares: -400 | Price: $166.62
Total Value: $66,648.00
Shares Owned After: 18,400 | Ownership: D (Direct)
Footnotes:
[F12] The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $166.22 to $167.05, 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.
[Transaction #16]
Security: Class A Common Stock
Date: 2026-06-26 | Code: S (Open market sale)
Shares: -400 | Price: $167.76
Total Value: $67,104.00
Shares Owned After: 18,000 | Ownership: D (Direct)
Footnotes:
[F13] The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $167.36 to $167.97, 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.
[Transaction #17]
Security: Class A Common Stock
Date: 2026-06-26 | Code: S (Open market sale)
Shares: -700 | Price: $169.07
Total Value: $118,349.00
Shares Owned After: 17,300 | Ownership: D (Direct)
Footnotes:
[F14] The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $168.62 to $169.58, 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.
[Transaction #18]
Security: Class A Common Stock
Date: 2026-06-26 | Code: S (Open market sale)
Shares: -100 | Price: $169.76
Total Value: $16,976.00
Shares Owned After: 17,200 | Ownership: D (Direct)
[Transaction #19]
Security: Class A Common Stock
Date: 2026-06-26 | Code: S (Open market sale)
Shares: -300 | Price: $171.45
Total Value: $51,435.00
Shares Owned After: 16,900 | Ownership: D (Direct)
Footnotes:
[F15] The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $170.99 to $171.92, 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.
[Transaction #20]
Security: Class A Common Stock
Date: 2026-06-26 | Code: S (Open market sale)
Shares: -839 | Price: $172.78
Total Value: $144,962.42
Shares Owned After: 16,061 | Ownership: D (Direct)
Footnotes:
[F16] The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $172.18 to $173.10, 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.
[Transaction #21]
Security: Class A Common Stock
Date: 2026-06-26 | Code: S (Open market sale)
Shares: -11,761 | Price: $173.65
Total Value: $2,042,297.65
Shares Owned After: 4,300 | Ownership: D (Direct)
Footnotes:
[F17] The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $173.20 to $174.19, 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.
[Transaction #22]
Security: Class A Common Stock
Date: 2026-06-26 | Code: S (Open market sale)
Shares: -600 | Price: $174.70
Total Value: $104,820.00
Shares Owned After: 3,700 | Ownership: D (Direct)
Footnotes:
[F18] The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $174.25 to $175.21, 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.
[Transaction #23]
Security: Class A Common Stock
Date: 2026-06-26 | Code: S (Open market sale)
Shares: -200 | Price: $175.94
Total Value: $35,188.00
Shares Owned After: 3,500 | Ownership: D (Direct)
Footnotes:
[F19] The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $175.73 to $176.14, 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.
[Transaction #24]
Security: Class A Common Stock
Date: 2026-06-26 | Code: S (Open market sale)
Shares: -200 | Price: $177.23
Total Value: $35,446.00
Shares Owned After: 3,300 | Ownership: D (Direct)
Footnotes:
[F20] The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $176.81 to $177.64, 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.
[Transaction #25]
Security: Class A Common Stock
Date: 2026-06-26 | Code: S (Open market sale)
Shares: -200 | Price: $178.12
Total Value: $35,624.00
Shares Owned After: 3,100 | Ownership: D (Direct)
Footnotes:
[F21] The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $178.03 to $178.20, 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.
[Transaction #26]
Security: Class A Common Stock
Date: 2026-06-26 | Code: S (Open market sale)
Shares: -1,100 | Price: $179.67
Total Value: $197,637.00
Shares Owned After: 2,000 | Ownership: D (Direct)
Footnotes:
[F22] The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $179.11 to $180.05, 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.
[Transaction #27]
Security: Class A Common Stock
Date: 2026-06-26 | Code: S (Open market sale)
Shares: -1,200 | Price: $180.50
Total Value: $216,600.00
Shares Owned After: 800 | Ownership: D (Direct)
Footnotes:
[F23] The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $180.13 to $180.99, 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.
[Transaction #28]
Security: Class A Common Stock
Date: 2026-06-26 | Code: S (Open market sale)
Shares: -800 | Price: $181.62
Total Value: $145,296.00
Shares Owned After: 0 | Ownership: D (Direct)
Footnotes:
[F24] The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $181.17 to $182.11, 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.
--- Footnotes (Complete Index) ---
F1: The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $178.69 to $179.10, 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.
F10: The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $163.44 to $164.28, 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.
F11: The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $164.94 to $165.40, 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.
F12: The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $166.22 to $167.05, 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.
F13: The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $167.36 to $167.97, 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.
F14: The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $168.62 to $169.58, 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.
F15: The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $170.99 to $171.92, 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.
F16: The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $172.18 to $173.10, 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.
F17: The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $173.20 to $174.19, 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.
F18: The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $174.25 to $175.21, 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.
F19: The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $175.73 to $176.14, 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.
F2: The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $179.81 to $180.58, 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.
F20: The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $176.81 to $177.64, 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.
F21: The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $178.03 to $178.20, 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.
F22: The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $179.11 to $180.05, 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.
F23: The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $180.13 to $180.99, 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.
F24: The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $181.17 to $182.11, 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.
F3: The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $181.02 to $181.26, 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.
F4: The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $183.66 to $184.61, 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.
F5: The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $184.67 to $185.56, 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.
F6: The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $185.68 to $186.66, 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.
F7: The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $186.68 to $186.94, 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.
F8: The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $161.30 to $161.61, 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.
F9: The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $162.44 to $162.95, 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.
--- Signature ---
/s/ /s/ Robert Mills, Attorney-in-fact (2026-06-29)
