SEC Form 4 · accession 0001628280-26-060987

Cerebras Systems Inc. · CBRS

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

Reporting owner

Andrew D. Feldman

Officer — CEO, President · Director

Period of report

Sep 4, 2026

Accepted (ET)

Sep 8, 2026 · 8:17 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	Nature of ownership
Class A Common Stock^F1	Sep 4, 2026	C	37,441	$0.00	A	54,294	D
Class A Common Stock^F3	Sep 4, 2026	S	1,100	$199.18	D	53,194	D
Class A Common Stock^F4	Sep 4, 2026	S	300	$200.79	D	52,894	D
Class A Common Stock^F5	Sep 4, 2026	S	300	$201.75	D	52,594	D
Class A Common Stock^F6	Sep 4, 2026	S	900	$202.97	D	51,694	D
Class A Common Stock^F7	Sep 4, 2026	S	1,200	$204.06	D	50,494	D
Class A Common Stock^F8	Sep 4, 2026	S	800	$206.30	D	49,694	D
Class A Common Stock^F9	Sep 4, 2026	S	1,500	$207.80	D	48,194	D
Class A Common Stock^F10	Sep 4, 2026	S	1,707	$208.84	D	46,487	D
Class A Common Stock^F11	Sep 4, 2026	S	6,721	$209.99	D	39,766	D
Class A Common Stock^F12	Sep 4, 2026	S	6,153	$210.91	D	33,613	D
Class A Common Stock^F13	Sep 4, 2026	S	7,439	$211.85	D	26,174	D
Class A Common Stock^F14	Sep 4, 2026	S	3,324	$213.04	D	22,850	D
Class A Common Stock^F15	Sep 4, 2026	S	3,897	$213.95	D	18,953	D
Class A Common Stock^F16	Sep 4, 2026	S	1,400	$214.98	D	17,553	D
Class A Common Stock^F17	Sep 4, 2026	S	600	$215.81	D	16,953	D
Class A Common Stock	Sep 4, 2026	S	100	$216.62	D	16,853	D
Class A Common Stock	Sep 8, 2026	J	120	$0.00	A	806	I	By Feldman Bravo Family Trust

Table II — derivative securities

Security	Conv. / exercise price	Date	Code	Shares	A/D	Exercisable	Expires	Underlying	Underlying shares	Owned after	D/I
Stock Option^F19	$2.72	Sep 4, 2026	M	37,441	D	—	Dec 7, 2030	Class B Common Stock	37,441	525,000	D
Class B Common Stock^F1	—	Sep 4, 2026	M	37,441	A	—	—	Class A Common Stock	37,441	13,982,575	D
Class B Common Stock^F1	—	Sep 4, 2026	C	37,441	D	—	—	Class A Common Stock	37,441	13,945,134	D
Class B Common Stock^F1	—	holding	—	—	—	—	—	Class A Common Stock	50,000	50,000	I
Class B Common Stock^F1	—	holding	—	—	—	—	—	Class A Common Stock	50,000	50,000	I

Explanation of responses

F1The 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.
F10The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $208.39 to $209.38, 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 $209.41 to $210.34, 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 $210.42 to $211.42, 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 $211.42 to $212.39, 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 $212.50 to $213.49, 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 $213.50 to $214.48, 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 $214.52 to $215.33, 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 $215.53 to $216.06, 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.
F18Represents a pro-rata, in-kind distribution not for additional consideration.
F19The stock option is fully vested and exercisable.
F2The 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.
F3The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $199.00 to $199.87, 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.
F4The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $200.16 to $201.12, 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 $201.45 to $202.11, 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.
F6The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $202.59 to $203.43, 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 $203.65 to $204.62, 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 $206.02 to $206.53, 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 $207.21 to $208.19, 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.