Cerebras Systems Inc. (CBRS) Insider Trading

Last 12 months

Insiders sold $408M and bought nothing on the open market.

85% of the selling was scheduled in advance under 10b5-1 plans. Director Steven Vassallo sold $10.9M on Aug 14, 27% of their stake, outside a plan. No executive or director has bought shares on the open market in the last two years.

Net open-market

−$408M

0 buys · 22 sales

Under a 10b5-1 plan

85%

of the value sold

Insiders who bought / sold

0 / 7

executives and directors

Last open-market buy

None

in the last two years

Get an email when CBRS's executives or directors buy, or make a large sale outside a plan.

Trades · last 2 years

Date	Insider	Trade	Shares	Price	Value	Of their stake	Filing
Sep 29	Robert Patrick Komin Jr. Chief Financial Officer	Sold10b5-1 plan 16 parts	32,500	$203.53 average	$6.61M	100%	Form 4
Sep 29	Dhiraj Mallick Chief Operating Officer	Sold10b5-1 plan 19 parts	396,000	$204.04 average	$80.8M	100%	Form 4
Sep 28	Yagnesh Patel Chief Accounting Officer	Sold10b5-1 plan	1,320	$204.50	$270k	7.9%	Form 4
Sep 25	Sean Lie Chief Technology Officer	Sold10b5-1 plan 9 parts	120,000	$208.97 average	$25.1M	28%	Form 4
Sep 4	Steven Vassallo Director	SoldNo plan 3 parts	50,000	$210.30 average	$10.5M	14%	Form 4
Sep 4	Sean Lie Chief Technology Officer	Sold10b5-1 plan	53,460	$210.16	$11.2M	13%	Form 4
Sep 4	Andrew D. Feldman CEO, President	Sold10b5-1 plan 16 parts	37,441	$210.46 average	$7.88M	68%	Form 4
Aug 21	Andrew D. Feldman CEO, President	Sold10b5-1 plan 13 parts	237,559	$199.27 average	$47.3M	93%	Form 4
Aug 20 – 21	Sean Lie Chief Technology Officer	Sold10b5-1 plan 11 parts	726,540	$207.90 average	$151M	66%	Form 4
Aug 18	Yagnesh Patel Chief Accounting Officer	SoldNo plan 25 parts	4,574	$222.22 average	$1.02M	22%	Form 4
Aug 18	Dhiraj Mallick Chief Operating Officer	SoldNo plan 26 parts	38,889	$222.22 average	$8.64M	24%	Form 4
Aug 18	Sean Lie Chief Technology Officer	SoldNo plan 26 parts	21,257	$222.22 average	$4.72M	3.4%	Form 4
Aug 18	Andrew D. Feldman CEO, President	SoldNo plan 26 parts	26,644	$222.22 average	$5.92M	28%	Form 4
Aug 17	Eric Vishria Director	Sold10b5-1 plan 6 parts	68,268	$229.77 average	$15.7M	32%	Form 4
Aug 14	Steven Vassallo Director	SoldNo plan 5 parts	50,000	$218.18 average	$10.9M	27%	Form 4
Jun 30	Dhiraj Mallick Chief Operating Officer	SoldNo plan	10,000	$206.51	$2.07M	100%	Form 4
Jun 25 – 26	Dhiraj Mallick Chief Operating Officer	SoldNo plan 28 parts	33,314	$178.19 average	$5.94M	100%	Form 4
Jun 25 – 26	Yagnesh Patel Chief Accounting Officer	SoldNo plan 15 parts	4,000	$174.20 average	$697k	21%	Form 4
Jun 25	Dhiraj Mallick Chief Operating Officer	SoldNo plan 29 parts	36,131	$169.28 average	$6.12M	52%	Form 4
Jun 25	Yagnesh Patel Chief Accounting Officer	SoldNo plan 29 parts	6,079	$171.53 average	$1.04M	60%	Form 4
Jun 25	Andrew D. Feldman CEO, President	SoldNo plan 12 parts	17,990	$173.06 average	$3.11M	100%	Form 4
Jun 25	Sean Lie Chief Technology Officer	SoldNo plan 16 parts	10,033	$170.07 average	$1.71M	100%	Form 4

Sep 2910b5-1 plan
Robert Patrick Komin Jr.
Chief Financial Officer · sold 32,500 at avg $203.53
$6.61M
100% of stake
Sep 2910b5-1 plan
Dhiraj Mallick
Chief Operating Officer · sold 396,000 at avg $204.04
$80.8M
100% of stake
Sep 2810b5-1 plan
Yagnesh Patel
Chief Accounting Officer · sold 1,320 at $204.50
$270k
7.9% of stake
Sep 2510b5-1 plan
Sean Lie
Chief Technology Officer · sold 120,000 at avg $208.97
$25.1M
28% of stake
Sep 4No plan
Steven Vassallo
Director · sold 50,000 at avg $210.30
$10.5M
14% of stake
Sep 410b5-1 plan
Sean Lie
Chief Technology Officer · sold 53,460 at $210.16
$11.2M
13% of stake
Sep 410b5-1 plan
Andrew D. Feldman
CEO, President · sold 37,441 at avg $210.46
$7.88M
68% of stake
Aug 2110b5-1 plan
Andrew D. Feldman
CEO, President · sold 237,559 at avg $199.27
$47.3M
93% of stake
Aug 20 – 2110b5-1 plan
Sean Lie
Chief Technology Officer · sold 726,540 at avg $207.90
$151M
66% of stake
Aug 18No plan
Yagnesh Patel
Chief Accounting Officer · sold 4,574 at avg $222.22
$1.02M
22% of stake
Aug 18No plan
Dhiraj Mallick
Chief Operating Officer · sold 38,889 at avg $222.22
$8.64M
24% of stake
Aug 18No plan
Sean Lie
Chief Technology Officer · sold 21,257 at avg $222.22
$4.72M
3.4% of stake
Aug 18No plan
Andrew D. Feldman
CEO, President · sold 26,644 at avg $222.22
$5.92M
28% of stake
Aug 1710b5-1 plan
Eric Vishria
Director · sold 68,268 at avg $229.77
$15.7M
32% of stake
Aug 14No plan
Steven Vassallo
Director · sold 50,000 at avg $218.18
$10.9M
27% of stake
Jun 30No plan
Dhiraj Mallick
Chief Operating Officer · sold 10,000 at $206.51
$2.07M
100% of stake
Jun 25 – 26No plan
Dhiraj Mallick
Chief Operating Officer · sold 33,314 at avg $178.19
$5.94M
100% of stake
Jun 25 – 26No plan
Yagnesh Patel
Chief Accounting Officer · sold 4,000 at avg $174.20
$697k
21% of stake
Jun 25No plan
Dhiraj Mallick
Chief Operating Officer · sold 36,131 at avg $169.28
$6.12M
52% of stake
Jun 25No plan
Yagnesh Patel
Chief Accounting Officer · sold 6,079 at avg $171.53
$1.04M
60% of stake
Jun 25No plan
Andrew D. Feldman
CEO, President · sold 17,990 at avg $173.06
$3.11M
100% of stake
Jun 25No plan
Sean Lie
Chief Technology Officer · sold 10,033 at avg $170.07
$1.71M
100% of stake

How to read this. Insiders sell for many reasons: taxes, diversifying, a house. Open-market buys are rarer and say more. A 10b5-1 plan is a trading schedule set up months in advance, so those sales were not timed on news. Large holders (funds and 10% owners) are listed under Everything but not counted as insiders. If you own or watch CBRS, we send a push when an executive buys or makes a large sale outside a plan.

Source: SEC Form 4 filings, filed within two business days of each trade and checked for new ones every hour.

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