VASSALLO STEVEN reported 12 transactions at CEREBRAS SYSTEMS INC.

Review the transaction codes below to understand the nature of each event.

VASSALLO STEVEN

Filed: 8/25/2026ACC: 0001567929-26-000008

InsiderVASSALLO STEVENCIK 1567929

→

IssuerCEREBRAS SYSTEMS INC.CIK 2021728

Director

Since May 2026

-1.12M

Net shares

Net seller

$0.00

Total acquired

Open market trades

0B · 0S

Total transactions

1.63M acquired · 2.75M disposed

Non-Derivative Transactions12

Class A Common Stock

Indirect

C · Conversion

+1.11M

Price / share

—

Trade value

—

% of position

New position

8/21/2026

0.00→1.11M

Class A Common Stock

Indirect

C · Conversion

+23.97K

Price / share

—

Trade value

—

% of position

New position

8/21/2026

0.00→23.97K

Class A Common Stock

Indirect

C · Conversion

+87.31K

Price / share

—

Trade value

—

% of position

New position

8/21/2026

0.00→87.31K

Class A Common Stock

Indirect

J · J

−1.11M

Price / share

—

Trade value

—

% of position

New position

8/21/2026

1.11M→0.00

Class A Common Stock

Indirect

J · J

−23.97K

Price / share

—

Trade value

—

% of position

New position

8/21/2026

23.97K→0.00

Class A Common Stock

Indirect

J · J

−87.31K

Price / share

—

Trade value

—

% of position

New position

8/21/2026

87.31K→0.00

Class A Common Stock

Indirect

J · J

+287.93K

Price / share

—

Trade value

—

% of position

New position

8/21/2026

0.00→287.93K

Class A Common Stock

Indirect

J · J

−287.93K

Price / share

—

Trade value

—

% of position

New position

8/21/2026

287.93K→0.00

Class A Common Stock

Indirect

J · J

+18.16K

Price / share

—

Trade value

—

% of position

New position

8/21/2026

0.00→18.16K

Class A Common Stock

Indirect

J · J

−18.16K

Price / share

—

Trade value

—

% of position

New position

8/21/2026

18.16K→0.00

Class A Common Stock

Indirect

J · J

+67.17K

Price / share

—

Trade value

—

% of position

43.4%

8/21/2026

154.81K→221.98K

Class A Common Stock

Indirect

J · J

+34.55K

Price / share

—

Trade value

—

% of position

32.9%

8/21/2026

105.07K→139.62K

Total

Net shares

+101.72K

Net value

$0.00

Security	Date	Type	Shares	Price / Share	Trade Value	% of Position	Held Before	Held After
Class A Common Stock Indirect	8/21/2026	C · Conversion	+1.11M	—	—	New position	0.00	1.11M
Class A Common Stock Indirect	8/21/2026	C · Conversion	+23.97K	—	—	New position	0.00	23.97K
Class A Common Stock Indirect	8/21/2026	C · Conversion	+87.31K	—	—	New position	0.00	87.31K
Class A Common Stock Indirect	8/21/2026	J · J	−1.11M	—	—	New position	1.11M	0.00
Class A Common Stock Indirect	8/21/2026	J · J	−23.97K	—	—	New position	23.97K	0.00
Class A Common Stock Indirect	8/21/2026	J · J	−87.31K	—	—	New position	87.31K	0.00
Class A Common Stock Indirect	8/21/2026	J · J	+287.93K	—	—	New position	0.00	287.93K
Class A Common Stock Indirect	8/21/2026	J · J	−287.93K	—	—	New position	287.93K	0.00
Class A Common Stock Indirect	8/21/2026	J · J	+18.16K	—	—	New position	0.00	18.16K
Class A Common Stock Indirect	8/21/2026	J · J	−18.16K	—	—	New position	18.16K	0.00
Class A Common Stock Indirect	8/21/2026	J · J	+67.17K	—	—	43.4%	154.81K	221.98K
Class A Common Stock Indirect	8/21/2026	J · J	+34.55K	—	—	32.9%	105.07K	139.62K
Total			+101.72K		$0.00

Derivative Transactions3

Class B Common Stock

Indirect

C · Conversion

Converts to

Class A Common Stock

1.11M shares

−1.11M

Strike price

Held after

9.32M

Exercisable

—

8/21/2026

Class B Common Stock

Indirect

C · Conversion

Converts to

Class A Common Stock

23.97K shares

−23.97K

Strike price

Held after

200.75K

Exercisable

—

8/21/2026

Class B Common Stock

Indirect

C · Conversion

Converts to

Class A Common Stock

87.31K shares

−87.31K

Strike price

Held after

731.25K

Exercisable

—

8/21/2026

Security	Converts To	Date	Type	Shares	Exercisable	Held After
Class B Common Stock Indirect	Class A Common Stock1.11M shares	8/21/2026	C · Conversion	−1.11M	—	9.32M
Class B Common Stock Indirect	Class A Common Stock23.97K shares	8/21/2026	C · Conversion	−23.97K	—	200.75K
Class B Common Stock Indirect	Class A Common Stock87.31K shares	8/21/2026	C · Conversion	−87.31K	—	731.25K