SEC Form 4 · accession 0001628280-26-046042

Cerebras Systems Inc. · CBRS

Statement of changes in beneficial ownership, as filed. Original on EDGAR ↗

Reporting owner

Dhiraj Mallick

Officer — Chief Operating Officer

Period of report

Jun 25, 2026

Accepted (ET)

Jun 29, 2026 · 4:53 pm EDT

Rule 10b5-1 plan

box not checked

Issuer CIK

0002021728

Table I — non-derivative securities

Security	Date	Code	Shares	Price	A/D	Owned after	D/I
Class A Common Stock	Jun 25, 2026	S	184	$175.61	D	33,130	D
Class A Common Stock^F1	Jun 25, 2026	S	230	$178.92	D	32,900	D
Class A Common Stock^F2	Jun 25, 2026	S	606	$180.19	D	32,294	D
Class A Common Stock^F3	Jun 25, 2026	S	330	$181.17	D	31,964	D
Class A Common Stock	Jun 25, 2026	S	138	$182.50	D	31,826	D
Class A Common Stock^F4	Jun 25, 2026	S	1,074	$184.30	D	30,752	D
Class A Common Stock^F5	Jun 25, 2026	S	7,282	$185.19	D	23,470	D
Class A Common Stock^F6	Jun 25, 2026	S	1,618	$186.23	D	21,852	D
Class A Common Stock^F7	Jun 25, 2026	S	1,752	$186.85	D	20,100	D
Class A Common Stock	Jun 25, 2026	S	100	$187.90	D	20,000	D
Class A Common Stock^F8	Jun 26, 2026	S	200	$161.46	D	19,800	D
Class A Common Stock^F9	Jun 26, 2026	S	300	$162.75	D	19,500	D
Class A Common Stock^F10	Jun 26, 2026	S	400	$163.90	D	19,100	D
Class A Common Stock^F11	Jun 26, 2026	S	300	$165.09	D	18,800	D
Class A Common Stock^F12	Jun 26, 2026	S	400	$166.62	D	18,400	D
Class A Common Stock^F13	Jun 26, 2026	S	400	$167.76	D	18,000	D
Class A Common Stock^F14	Jun 26, 2026	S	700	$169.07	D	17,300	D
Class A Common Stock	Jun 26, 2026	S	100	$169.76	D	17,200	D
Class A Common Stock^F15	Jun 26, 2026	S	300	$171.45	D	16,900	D
Class A Common Stock^F16	Jun 26, 2026	S	839	$172.78	D	16,061	D
Class A Common Stock^F17	Jun 26, 2026	S	11,761	$173.65	D	4,300	D
Class A Common Stock^F18	Jun 26, 2026	S	600	$174.70	D	3,700	D
Class A Common Stock^F19	Jun 26, 2026	S	200	$175.94	D	3,500	D
Class A Common Stock^F20	Jun 26, 2026	S	200	$177.23	D	3,300	D
Class A Common Stock^F21	Jun 26, 2026	S	200	$178.12	D	3,100	D
Class A Common Stock^F22	Jun 26, 2026	S	1,100	$179.67	D	2,000	D
Class A Common Stock^F23	Jun 26, 2026	S	1,200	$180.50	D	800	D
Class A Common Stock^F24	Jun 26, 2026	S	800	$181.62	D	0	D

Table II — derivative securities

No Table II lines on this filing.

Explanation of responses

F1The 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.
F10The 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.
F11The 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.
F12The 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.
F13The 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.
F14The 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.
F15The 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.
F16The 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.
F17The 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.
F18The 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.
F19The 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.
F2The 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.
F20The 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.
F21The 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.
F22The 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.
F23The 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.
F24The 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.
F3The 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.
F4The 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.
F5The 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.
F6The 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.
F7The 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.
F8The 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.
F9The 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.

Remarks

This Form 4 is the second of two Forms 4 being filed by the Reporting Person relating to transactions that occurred on June 25, 2026 and June 26, 2026 (the "Transaction Dates"). Because there are more than 30 rows associated with the Reporting Person's transactions that occurred on the Transaction Dates, and EDGAR will not allow for the entry of more than 30 rows on a single Form 4, this second Form 4 is being filed to report the transactions that were not included on the first Form 4. The two Forms 4 filed by the Reporting Person on the date hereof should be read together as one consolidated filing.