FELDMAN ANDREW D. (CEO, President) sold 69.0% of their position (37.44K shares) of CEREBRAS SYSTEMS INC. on the open market

Open‑market sale worth $7.88M — a major position exit. Review remaining holdings and any 10b5‑1 plan disclosures.

S · 16 sales

FELDMAN ANDREW D.

Filed: 9/9/2026ACC: 0001628280-26-060987

InsiderFELDMAN ANDREW D.CIK 2039573

→

IssuerCEREBRAS SYSTEMS INC.CIK 2021728

DirectorOfficer10% Owner· CEO, President

Since May 2026

-37.32K

Net shares

Net seller

$7.88M

Total sold

Open market trades

0B · 16S

Total transactions

75K acquired · 112.32K disposed

Non-Derivative Transactions18

Class A Common Stock

Direct

C · Conversion

+37.44K

Price / share

—

Trade value

—

% of position

222.2%

9/4/2026

16.85K→54.29K

Class A Common Stock

Direct

S · Sale

−1.10K

Price / share

$199.18

Trade value

$219.10K

% of position

2.0%

9/4/2026

54.29K→53.19K

Class A Common Stock

Direct

S · Sale

−300.00

Price / share

$200.79

Trade value

$60.24K

% of position

0.6%

9/4/2026

53.19K→52.89K

Class A Common Stock

Direct

S · Sale

−300.00

Price / share

$201.75

Trade value

$60.52K

% of position

0.6%

9/4/2026

52.89K→52.59K

Class A Common Stock

Direct

S · Sale

−900.00

Price / share

$202.97

Trade value

$182.67K

% of position

1.7%

9/4/2026

52.59K→51.69K

Class A Common Stock

Direct

S · Sale

−1.20K

Price / share

$204.06

Trade value

$244.87K

% of position

2.3%

9/4/2026

51.69K→50.49K

Class A Common Stock

Direct

S · Sale

−800.00

Price / share

$206.30

Trade value

$165.04K

% of position

1.6%

9/4/2026

50.49K→49.69K

Class A Common Stock

Direct

S · Sale

−1.50K

Price / share

$207.80

Trade value

$311.70K

% of position

3.0%

9/4/2026

49.69K→48.19K

Class A Common Stock

Direct

S · Sale

−1.71K

Price / share

$208.84

Trade value

$356.49K

% of position

3.5%

9/4/2026

48.19K→46.49K

Class A Common Stock

Direct

S · Sale

−6.72K

Price / share

$209.99

Trade value

$1.41M

% of position

14.5%

9/4/2026

46.49K→39.77K

Class A Common Stock

Direct

S · Sale

−6.15K

Price / share

$210.91

Trade value

$1.30M

% of position

15.5%

9/4/2026

39.77K→33.61K

Class A Common Stock

Direct

S · Sale

−7.44K

Price / share

$211.85

Trade value

$1.58M

% of position

22.1%

9/4/2026

33.61K→26.17K

Class A Common Stock

Direct

S · Sale

−3.32K

Price / share

$213.04

Trade value

$708.14K

% of position

12.7%

9/4/2026

26.17K→22.85K

Class A Common Stock

Direct

S · Sale

−3.90K

Price / share

$213.95

Trade value

$833.76K

% of position

17.1%

9/4/2026

22.85K→18.95K

Class A Common Stock

Direct

S · Sale

−1.40K

Price / share

$214.98

Trade value

$300.97K

% of position

7.4%

9/4/2026

18.95K→17.55K

Class A Common Stock

Direct

S · Sale

−600.00

Price / share

$215.81

Trade value

$129.49K

% of position

3.4%

9/4/2026

17.55K→16.95K

Class A Common Stock

Direct

S · Sale

−100.00

Price / share

$216.62

Trade value

$21.66K

% of position

0.6%

9/4/2026

16.95K→16.85K

Class A Common Stock

Indirect

J · J

+120.00

Price / share

—

Trade value

—

% of position

17.5%

9/8/2026

686.00→806.00

Total

Net shares

+120.00

Net value

-$7.88M

Security	Date	Type	Shares	Price / Share	Trade Value	% of Position	Held Before	Held After
Class A Common Stock Direct	9/4/2026	C · Conversion	+37.44K	—	—	222.2%	16.85K	54.29K
Class A Common Stock Direct	9/4/2026	S · Sale	−1.10K	$199.18	$219.10K	2.0%	54.29K	53.19K
Class A Common Stock Direct	9/4/2026	S · Sale	−300.00	$200.79	$60.24K	0.6%	53.19K	52.89K
Class A Common Stock Direct	9/4/2026	S · Sale	−300.00	$201.75	$60.52K	0.6%	52.89K	52.59K
Class A Common Stock Direct	9/4/2026	S · Sale	−900.00	$202.97	$182.67K	1.7%	52.59K	51.69K
Class A Common Stock Direct	9/4/2026	S · Sale	−1.20K	$204.06	$244.87K	2.3%	51.69K	50.49K
Class A Common Stock Direct	9/4/2026	S · Sale	−800.00	$206.30	$165.04K	1.6%	50.49K	49.69K
Class A Common Stock Direct	9/4/2026	S · Sale	−1.50K	$207.80	$311.70K	3.0%	49.69K	48.19K
Class A Common Stock Direct	9/4/2026	S · Sale	−1.71K	$208.84	$356.49K	3.5%	48.19K	46.49K
Class A Common Stock Direct	9/4/2026	S · Sale	−6.72K	$209.99	$1.41M	14.5%	46.49K	39.77K
Class A Common Stock Direct	9/4/2026	S · Sale	−6.15K	$210.91	$1.30M	15.5%	39.77K	33.61K
Class A Common Stock Direct	9/4/2026	S · Sale	−7.44K	$211.85	$1.58M	22.1%	33.61K	26.17K
Class A Common Stock Direct	9/4/2026	S · Sale	−3.32K	$213.04	$708.14K	12.7%	26.17K	22.85K
Class A Common Stock Direct	9/4/2026	S · Sale	−3.90K	$213.95	$833.76K	17.1%	22.85K	18.95K
Class A Common Stock Direct	9/4/2026	S · Sale	−1.40K	$214.98	$300.97K	7.4%	18.95K	17.55K
Class A Common Stock Direct	9/4/2026	S · Sale	−600.00	$215.81	$129.49K	3.4%	17.55K	16.95K
Class A Common Stock Direct	9/4/2026	S · Sale	−100.00	$216.62	$21.66K	0.6%	16.95K	16.85K
Class A Common Stock Indirect	9/8/2026	J · J	+120.00	—	—	17.5%	686.00	806.00
Total			+120.00		-$7.88M

Derivative Transactions3

Stock Option

Direct

M · Option Exercise

Converts to

Class B Common Stock

37.44K shares

−37.44K

Strike price

2.72

Held after

525K

Exercisable

—

9/4/2026

Class B Common Stock

Direct

M · Option Exercise

Converts to

Class A Common Stock

37.44K shares

+37.44K

Strike price

Held after

13.98M

Exercisable

—

9/4/2026

Class B Common Stock

Direct

C · Conversion

Converts to

Class A Common Stock

37.44K shares

−37.44K

Strike price

Held after

13.95M

Exercisable

—

9/4/2026

Security	Converts To	Date	Type	Shares	Strike Price	Exercisable	Held After
Stock Option Direct	Class B Common Stock37.44K shares	9/4/2026	M · Option Exercise	−37.44K	2.72	—	525K
Class B Common Stock Direct	Class A Common Stock37.44K shares	9/4/2026	M · Option Exercise	+37.44K		—	13.98M
Class B Common Stock Direct	Class A Common Stock37.44K shares	9/4/2026	C · Conversion	−37.44K		—	13.95M

Non-Derivative Holdings (Post-Transaction)0

No non-derivative holdings reported

Derivative Holdings (Post-Transaction)2

Class B Common Stock

Indirect

Underlying security

Class A Common Stock

Underlying shares

50K

Shares owned

50K

Exercise price

Expiration

—

Exercise window

—

Class B Common Stock

Indirect

Underlying security

Class A Common Stock

Underlying shares

50K

Shares owned

50K

Exercise price

Expiration

—

Exercise window

—

Total

Underlying

100K

Owned

100K

Security	Underlying	Exercise Window	Expiration	Underlying Shares	Shares Owned
Class B Common Stock Indirect	Class A Common Stock	—	—	50K	50K
Class B Common Stock Indirect	Class A Common Stock	—	—	50K	50K
Total				100K	100K