Form 4 for CBRS Cerebras Systems Inc.

Accepted 2026-08-20 20:14:01 ET · period of report 2026-08-18 · accession 0001628280-26-058316 · SEC index · Original document

Summary rows

Aggregated the way they appear in lists: one row per insider, transaction code and security table.

X	Filed	Traded	Ticker	Insider	Title	Type	Price	Qty	Owned	ΔOwn	Value
D	2026-08-20 20:14	2026-08-18	CBRS	Komin Robert Patrick Jr.	CFO	C - Cnv Deriv	$0.00	+32.5K	32.5K	New	$0
D	2026-08-20 20:14	2026-08-18	CBRS	Komin Robert Patrick Jr.	CFO	C - Cnv Deriv	—	-32.5K	821.7K	-4%	—

Purchase Sale Sale after option exercise All abbreviations

#	Table	Security	Date	Code	A/D	Shares	Price	Owned after	Own	Exercise / expiry	Underlying	Footnotes
1	Common	Class A Common Stock	2026-08-18	C	A	32,500	$0.00	32,500	D	—	—	(F1) 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.
2	Derivative	Class B Common Stock	2026-08-18	C	D	32,500	—	821,653	D	— · — to —	32,500 Class A Common Stock	(F1) 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. (F1) 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. (F1) 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. (F1) 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.