FELDMAN ANDREW D. (CEO, President) sold 93.4% of their position (237.56K shares) of CEREBRAS SYSTEMS INC. on the open market

Open‑market sale worth $47.34M — a major position exit. Review remaining holdings and any 10b5‑1 plan disclosures.

S · 13 sales

FELDMAN ANDREW D.

Filed: 8/25/2026ACC: 0001628280-26-058961

InsiderFELDMAN ANDREW D.CIK 2039573

→

IssuerCEREBRAS SYSTEMS INC.CIK 2021728

DirectorOfficer10% Owner· CEO, President

Since May 2026

-287.44K

Net shares

Net seller

$47.34M

Total sold

Open market trades

0B · 13S

Total transactions

475.24K acquired · 762.68K disposed

Non-Derivative Transactions16

Class A Common Stock

Direct

G · Gift

−50K

Price / share

—

Trade value

—

% of position

74.8%

8/21/2026

66.85K→16.85K

Class A Common Stock

Direct

C · Conversion

+237.56K

Price / share

—

Trade value

—

% of position

1409.6%

8/21/2026

16.85K→254.41K

Class A Common Stock

Direct

S · Sale

−43.55K

Price / share

$196.20

Trade value

$8.55M

% of position

17.1%

8/21/2026

254.41K→210.86K

Class A Common Stock

Direct

S · Sale

−21.31K

Price / share

$197.45

Trade value

$4.21M

% of position

10.1%

8/21/2026

210.86K→189.55K

Class A Common Stock

Direct

S · Sale

−32.86K

Price / share

$198.18

Trade value

$6.51M

% of position

17.3%

8/21/2026

189.55K→156.69K

Class A Common Stock

Direct

S · Sale

−66.24K

Price / share

$199.33

Trade value

$13.20M

% of position

42.3%

8/21/2026

156.69K→90.45K

Class A Common Stock

Direct

S · Sale

−33.58K

Price / share

$200.13

Trade value

$6.72M

% of position

37.1%

8/21/2026

90.45K→56.88K

Class A Common Stock

Direct

S · Sale

−8.83K

Price / share

$201.12

Trade value

$1.78M

% of position

15.5%

8/21/2026

56.88K→48.04K

Class A Common Stock

Direct

S · Sale

−6.70K

Price / share

$202.28

Trade value

$1.36M

% of position

13.9%

8/21/2026

48.04K→41.34K

Class A Common Stock

Direct

S · Sale

−12.09K

Price / share

$203.37

Trade value

$2.46M

% of position

29.2%

8/21/2026

41.34K→29.25K

Class A Common Stock

Direct

S · Sale

−4.80K

Price / share

$204.44

Trade value

$981.31K

% of position

16.4%

8/21/2026

29.25K→24.45K

Class A Common Stock

Direct

S · Sale

−1.60K

Price / share

$205.32

Trade value

$328.51K

% of position

6.5%

8/21/2026

24.45K→22.85K

Class A Common Stock

Direct

S · Sale

−1.40K

Price / share

$207.28

Trade value

$290.19K

% of position

6.1%

8/21/2026

22.85K→21.45K

Class A Common Stock

Direct

S · Sale

−4.59K

Price / share

$208.86

Trade value

$959.50K

% of position

21.4%

8/21/2026

21.45K→16.86K

Class A Common Stock

Direct

S · Sale

−6.00

Price / share

$210.21

Trade value

$1.26K

% of position

0.0%

8/21/2026

16.86K→16.85K

Class A Common Stock

Indirect

J · J

+120.00

Price / share

—

Trade value

—

% of position

21.2%

8/24/2026

566.00→686.00

Total

Net shares

−49.88K

Net value

-$47.34M

Security	Date	Type	Shares	Price / Share	Trade Value	% of Position	Held Before	Held After
Class A Common Stock Direct	8/21/2026	G · Gift	−50K	—	—	74.8%	66.85K	16.85K
Class A Common Stock Direct	8/21/2026	C · Conversion	+237.56K	—	—	1409.6%	16.85K	254.41K
Class A Common Stock Direct	8/21/2026	S · Sale	−43.55K	$196.20	$8.55M	17.1%	254.41K	210.86K
Class A Common Stock Direct	8/21/2026	S · Sale	−21.31K	$197.45	$4.21M	10.1%	210.86K	189.55K
Class A Common Stock Direct	8/21/2026	S · Sale	−32.86K	$198.18	$6.51M	17.3%	189.55K	156.69K
Class A Common Stock Direct	8/21/2026	S · Sale	−66.24K	$199.33	$13.20M	42.3%	156.69K	90.45K
Class A Common Stock Direct	8/21/2026	S · Sale	−33.58K	$200.13	$6.72M	37.1%	90.45K	56.88K
Class A Common Stock Direct	8/21/2026	S · Sale	−8.83K	$201.12	$1.78M	15.5%	56.88K	48.04K
Class A Common Stock Direct	8/21/2026	S · Sale	−6.70K	$202.28	$1.36M	13.9%	48.04K	41.34K
Class A Common Stock Direct	8/21/2026	S · Sale	−12.09K	$203.37	$2.46M	29.2%	41.34K	29.25K
Class A Common Stock Direct	8/21/2026	S · Sale	−4.80K	$204.44	$981.31K	16.4%	29.25K	24.45K
Class A Common Stock Direct	8/21/2026	S · Sale	−1.60K	$205.32	$328.51K	6.5%	24.45K	22.85K
Class A Common Stock Direct	8/21/2026	S · Sale	−1.40K	$207.28	$290.19K	6.1%	22.85K	21.45K
Class A Common Stock Direct	8/21/2026	S · Sale	−4.59K	$208.86	$959.50K	21.4%	21.45K	16.86K
Class A Common Stock Direct	8/21/2026	S · Sale	−6.00	$210.21	$1.26K	0.0%	16.86K	16.85K
Class A Common Stock Indirect	8/24/2026	J · J	+120.00	—	—	21.2%	566.00	686.00
Total			−49.88K		-$47.34M

Derivative Transactions5

Stock Option

Direct

M · Option Exercise

Converts to

Class B Common Stock

62.67K shares

−62.67K

Strike price

5.02

Held after

87.33K

Exercisable

—

8/21/2026

Stock Option

Direct

M · Option Exercise

Converts to

Class B Common Stock

137.33K shares

−137.33K

Strike price

7.89

Held after

12.67K

Exercisable

—

8/21/2026

Stock Option

Direct

M · Option Exercise

Converts to

Class B Common Stock

37.56K shares

−37.56K

Strike price

2.72

Held after

562.44K

Exercisable

—

8/21/2026

Class B Common Stock

Direct

M · Option Exercise

Converts to

Class A Common Stock

237.56K shares

+237.56K

Strike price

Held after

14.18M

Exercisable

—

8/21/2026

Class B Common Stock

Direct

C · Conversion

Converts to

Class A Common Stock

237.56K shares

−237.56K

Strike price

Held after

13.95M

Exercisable

—

8/21/2026

Security	Converts To	Date	Type	Shares	Strike Price	Exercisable	Held After
Stock Option Direct	Class B Common Stock62.67K shares	8/21/2026	M · Option Exercise	−62.67K	5.02	—	87.33K
Stock Option Direct	Class B Common Stock137.33K shares	8/21/2026	M · Option Exercise	−137.33K	7.89	—	12.67K
Stock Option Direct	Class B Common Stock37.56K shares	8/21/2026	M · Option Exercise	−37.56K	2.72	—	562.44K
Class B Common Stock Direct	Class A Common Stock237.56K shares	8/21/2026	M · Option Exercise	+237.56K		—	14.18M
Class B Common Stock Direct	Class A Common Stock237.56K shares	8/21/2026	C · Conversion	−237.56K		—	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