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SEC EDGAR · Forms 3/4/5Updated through Oct 30, 2026•75 filings

CBRS

Cerebras Systems Inc.

Net sales of $375.5M over the last 3 months

7 sellers account for the net balance. There is no cluster of three distinct buyers within 30 days. We found no CEO/CFO purchases over 12 months.

How to read this signal

Only open-market P purchases and S sales count toward the signal. Vesting, options, taxes and gifts remain in the source data but do not trigger alerts. Rule 10b5-1 trades are shown as informational.

JSON example

3-month balance

−$375,456,503

0 buyers · 7 sellers

12-month purchases

$0.00

0 distinct insiders

12-month sales

$389,220,355

7 distinct insiders

Highlighted alerts

11

89 Rule 10b5-1 trades treated as informational

Buying cluster · 30 days

Fewer than three distinct buyers

CEO/CFO purchases · 12 months

No executive purchases found

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Form 4 raw → Raspberry

The value is in what we do not call a signal.

The SEC XML stores every transaction. Raspberry keeps that evidence, reads the footnotes and separates voluntary open-market activity from vesting, option exercises, gifts, tax withholding, stock purchase and dividend reinvestment plans and pre-programmed 10b5-1 trades.

100
Raw transactions
Everything returned by the filing
100
Voluntary view
P/S trades after deterministic checks
13
Administrative noise
Stored, never alerted
80
10b5-1
Shown as informational
SEC ownership XML facts
Code
G
Shares
18,000
Price
$0.00
Footnotes
7

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. The reporting person transferred 18,000 shares of the Issuer's common stock to a donor-advised fund sponsored by a charitable organization under Section 501(c)(3) of the Internal Revenue Code. The sale reported on this Form 4 represents shares sold by the Reporting Person pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on May 20, 2026. The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $116.58 to $116.88, inclusive. Upon request by the staff of the Securities and Exchange commission, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price. The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $115.46 to $116.19, inclusive. Upon request by the staff of the Securities and Exchange commission, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price. The stock option vests in 48 substantially equal monthly installments beginning on February 1, 2024. The stock option vests in 48 substantially equal monthly installments beginning on February 1, 2023.

Raspberry interpretation
Informational — no alert

Reason: administrative_code. The trade is reported under a Rule 10b5-1 plan.

Verify in SEC EDGAR

Recent transactions

Voluntary purchases and sales; administrative noise stays hidden.

100 transactions

Lie Sean

Chief Technology Officer

Sale 10b5-1
Shares
100
Price
$113.92
Value
$11,392
Open SEC filing

Lie Sean

Chief Technology Officer

Sale 10b5-1
Shares
45,400
Price
$115.46
Value
$5,241,884
Open SEC filing

Lie Sean

Chief Technology Officer

Sale 10b5-1
Shares
14,500
Price
$116.82
Value
$1,693,890
Open SEC filing

Komin Robert Patrick Jr.

Chief Financial Officer

Sale 10b5-1
Shares
400
Price
$201.96
Value
$80,784
Open SEC filing

Komin Robert Patrick Jr.

Chief Financial Officer

Sale 10b5-1
Shares
800
Price
$203.48
Value
$162,784
Open SEC filing

Komin Robert Patrick Jr.

Chief Financial Officer

Sale 10b5-1
Shares
1,600
Price
$204.26
Value
$326,816
Open SEC filing

Komin Robert Patrick Jr.

Chief Financial Officer

Sale 10b5-1
Shares
600
Price
$205.47
Value
$123,282
Open SEC filing

Komin Robert Patrick Jr.

Chief Financial Officer

Sale 10b5-1
Shares
800
Price
$206.68
Value
$165,344
Open SEC filing

Komin Robert Patrick Jr.

Chief Financial Officer

Sale 10b5-1
Shares
700
Price
$207.83
Value
$145,481
Open SEC filing

Komin Robert Patrick Jr.

Chief Financial Officer

Sale 10b5-1
Shares
2,197
Price
$208.98
Value
$459,129
Open SEC filing

Komin Robert Patrick Jr.

Chief Financial Officer

Sale 10b5-1
Shares
2,802
Price
$210.02
Value
$588,476
Open SEC filing

Komin Robert Patrick Jr.

Chief Financial Officer

Sale 10b5-1
Shares
3,000
Price
$194.92
Value
$584,760
Open SEC filing

Komin Robert Patrick Jr.

Chief Financial Officer

Sale 10b5-1
Shares
1,115
Price
$195.61
Value
$218,105
Open SEC filing

Komin Robert Patrick Jr.

Chief Financial Officer

Sale 10b5-1
Shares
685
Price
$197.48
Value
$135,274
Open SEC filing

Komin Robert Patrick Jr.

Chief Financial Officer

Sale 10b5-1
Shares
870
Price
$198.70
Value
$172,869
Open SEC filing

Komin Robert Patrick Jr.

Chief Financial Officer

Sale 10b5-1
Shares
1,130
Price
$199.80
Value
$225,774
Open SEC filing

Komin Robert Patrick Jr.

Chief Financial Officer

Sale 10b5-1
Shares
11,200
Price
$201.22
Value
$2,253,664
Open SEC filing

Komin Robert Patrick Jr.

Chief Financial Officer

Sale 10b5-1
Shares
2,771
Price
$211.03
Value
$584,764
Open SEC filing

Komin Robert Patrick Jr.

Chief Financial Officer

Sale 10b5-1
Shares
1,830
Price
$211.79
Value
$387,576
Open SEC filing

Mallick Dhiraj

Chief Operating Officer

Sale 10b5-1
Shares
8,729
Price
$205.17
Value
$1,790,929
Open SEC filing

Mallick Dhiraj

Chief Operating Officer

Sale 10b5-1
Shares
9,047
Price
$206.13
Value
$1,864,858
Open SEC filing

Mallick Dhiraj

Chief Operating Officer

Sale 10b5-1
Shares
9,652
Price
$207.06
Value
$1,998,543
Open SEC filing

Mallick Dhiraj

Chief Operating Officer

Sale 10b5-1
Shares
20,714
Price
$208.38
Value
$4,316,383
Open SEC filing

Mallick Dhiraj

Chief Operating Officer

Sale 10b5-1
Shares
41,278
Price
$209.33
Value
$8,640,724
Open SEC filing

Mallick Dhiraj

Chief Operating Officer

Sale 10b5-1
Shares
46,427
Price
$210.27
Value
$9,762,205
Open SEC filing

Mallick Dhiraj

Chief Operating Officer

Sale 10b5-1
Shares
41,391
Price
$211.29
Value
$8,745,504
Open SEC filing

Mallick Dhiraj

Chief Operating Officer

Sale 10b5-1
Shares
18,274
Price
$212.20
Value
$3,877,743
Open SEC filing

Mallick Dhiraj

Chief Operating Officer

Sale 10b5-1
Shares
68,830
Price
$194.91
Value
$13,415,655
Open SEC filing

Mallick Dhiraj

Chief Operating Officer

Sale 10b5-1
Shares
18,703
Price
$195.56
Value
$3,657,559
Open SEC filing

Mallick Dhiraj

Chief Operating Officer

Sale 10b5-1
Shares
6,613
Price
$197.05
Value
$1,303,092
Open SEC filing

Mallick Dhiraj

Chief Operating Officer

Sale 10b5-1
Shares
5,170
Price
$197.85
Value
$1,022,885
Open SEC filing

Mallick Dhiraj

Chief Operating Officer

Sale 10b5-1
Shares
17,000
Price
$198.96
Value
$3,382,320
Open SEC filing

Mallick Dhiraj

Chief Operating Officer

Sale 10b5-1
Shares
17,848
Price
$199.89
Value
$3,567,637
Open SEC filing

Mallick Dhiraj

Chief Operating Officer

Sale 10b5-1
Shares
22,915
Price
$200.96
Value
$4,604,998
Open SEC filing

Mallick Dhiraj

Chief Operating Officer

Sale 10b5-1
Shares
5,637
Price
$201.91
Value
$1,138,167
Open SEC filing

Mallick Dhiraj

Chief Operating Officer

Sale 10b5-1
Shares
9,682
Price
$203.37
Value
$1,969,028
Open SEC filing

Mallick Dhiraj

Chief Operating Officer

Sale 10b5-1
Shares
27,492
Price
$204.17
Value
$5,613,042
Open SEC filing

Mallick Dhiraj

Chief Operating Officer

Sale 10b5-1
Shares
598
Price
$212.93
Value
$127,332
Open SEC filing

Patel Yagnesh

Chief Accounting Officer

Sale 10b5-1
Shares
1,320
Price
$204.50
Value
$269,940
Open SEC filing

Lie Sean

Chief Technology Officer

Sale 10b5-1
Shares
5,900
Price
$205.30
Value
$1,211,270
Open SEC filing

Lie Sean

Chief Technology Officer

Sale 10b5-1
Shares
13,776
Price
$206.63
Value
$2,846,535
Open SEC filing

Lie Sean

Chief Technology Officer

Sale 10b5-1
Shares
6,869
Price
$207.54
Value
$1,425,592
Open SEC filing

Lie Sean

Chief Technology Officer

Sale 10b5-1
Shares
21,022
Price
$208.41
Value
$4,381,195
Open SEC filing

Lie Sean

Chief Technology Officer

Sale 10b5-1
Shares
29,991
Price
$209.53
Value
$6,284,014
Open SEC filing

Lie Sean

Chief Technology Officer

Sale 10b5-1
Shares
30,565
Price
$210.45
Value
$6,432,404
Open SEC filing

Lie Sean

Chief Technology Officer

Sale 10b5-1
Shares
9,177
Price
$211.32
Value
$1,939,284
Open SEC filing

Lie Sean

Chief Technology Officer

Sale 10b5-1
Shares
500
Price
$212.14
Value
$106,070
Open SEC filing

Lie Sean

Chief Technology Officer

Sale 10b5-1
Shares
2,200
Price
$204.50
Value
$449,900
Open SEC filing

Vassallo Steven

Director

SaleAlert
Shares
7,110
Price
$211.56
Value
$1,504,192
Open SEC filing

Vassallo Steven

Director

SaleAlert
Shares
21,773
Price
$210.37
Value
$4,580,386
Open SEC filing

Vassallo Steven

Director

SaleAlert
Shares
21,117
Price
$209.81
Value
$4,430,558
Open SEC filing

Lie Sean

Chief Technology Officer

Sale 10b5-1
Shares
53,460
Price
$210.16
Value
$11,235,154
Open SEC filing

Feldman Andrew D.

CEO, President

Sale 10b5-1
Shares
6,721
Price
$209.99
Value
$1,411,343
Open SEC filing

Feldman Andrew D.

CEO, President

Sale 10b5-1
Shares
1,707
Price
$208.84
Value
$356,490
Open SEC filing

Feldman Andrew D.

CEO, President

Sale 10b5-1
Shares
1,500
Price
$207.80
Value
$311,700
Open SEC filing

Feldman Andrew D.

CEO, President

Sale 10b5-1
Shares
800
Price
$206.30
Value
$165,040
Open SEC filing

Feldman Andrew D.

CEO, President

Sale 10b5-1
Shares
1,200
Price
$204.06
Value
$244,872
Open SEC filing

Feldman Andrew D.

CEO, President

Sale 10b5-1
Shares
900
Price
$202.97
Value
$182,673
Open SEC filing

Feldman Andrew D.

CEO, President

Sale 10b5-1
Shares
300
Price
$201.75
Value
$60,525
Open SEC filing

Feldman Andrew D.

CEO, President

Sale 10b5-1
Shares
300
Price
$200.79
Value
$60,237
Open SEC filing

Feldman Andrew D.

CEO, President

Sale 10b5-1
Shares
100
Price
$216.62
Value
$21,662
Open SEC filing

Feldman Andrew D.

CEO, President

Sale 10b5-1
Shares
600
Price
$215.81
Value
$129,486
Open SEC filing

Feldman Andrew D.

CEO, President

Sale 10b5-1
Shares
1,400
Price
$214.98
Value
$300,972
Open SEC filing

Feldman Andrew D.

CEO, President

Sale 10b5-1
Shares
3,897
Price
$213.95
Value
$833,763
Open SEC filing

Feldman Andrew D.

CEO, President

Sale 10b5-1
Shares
3,324
Price
$213.04
Value
$708,145
Open SEC filing

Feldman Andrew D.

CEO, President

Sale 10b5-1
Shares
7,439
Price
$211.85
Value
$1,575,952
Open SEC filing

Feldman Andrew D.

CEO, President

Sale 10b5-1
Shares
6,153
Price
$210.91
Value
$1,297,729
Open SEC filing

Feldman Andrew D.

CEO, President

Sale 10b5-1
Shares
1,100
Price
$199.18
Value
$219,098
Open SEC filing

Feldman Andrew D.

CEO, President

Sale 10b5-1
Shares
12,092
Price
$203.37
Value
$2,459,150
Open SEC filing

Feldman Andrew D.

CEO, President

Sale 10b5-1
Shares
6,699
Price
$202.28
Value
$1,355,074
Open SEC filing

Feldman Andrew D.

CEO, President

Sale 10b5-1
Shares
8,832
Price
$201.12
Value
$1,776,292
Open SEC filing

Feldman Andrew D.

CEO, President

Sale 10b5-1
Shares
33,575
Price
$200.13
Value
$6,719,365
Open SEC filing

Feldman Andrew D.

CEO, President

Sale 10b5-1
Shares
66,237
Price
$199.33
Value
$13,203,021
Open SEC filing

Feldman Andrew D.

CEO, President

Sale 10b5-1
Shares
32,864
Price
$198.18
Value
$6,512,988
Open SEC filing

Feldman Andrew D.

CEO, President

Sale 10b5-1
Shares
21,307
Price
$197.45
Value
$4,207,067
Open SEC filing

Feldman Andrew D.

CEO, President

Sale 10b5-1
Shares
43,553
Price
$196.20
Value
$8,545,099
Open SEC filing

Feldman Andrew D.

CEO, President

Sale 10b5-1
Shares
6
Price
$210.21
Value
$1,261
Open SEC filing

Feldman Andrew D.

CEO, President

Sale 10b5-1
Shares
4,594
Price
$208.86
Value
$959,503
Open SEC filing

Feldman Andrew D.

CEO, President

Sale 10b5-1
Shares
1,400
Price
$207.28
Value
$290,192
Open SEC filing

Feldman Andrew D.

CEO, President

Sale 10b5-1
Shares
1,600
Price
$205.32
Value
$328,512
Open SEC filing

Feldman Andrew D.

CEO, President

Sale 10b5-1
Shares
4,800
Price
$204.44
Value
$981,312
Open SEC filing

Lie Sean

Chief Technology Officer

Sale 10b5-1
Shares
16,293
Price
$210.01
Value
$3,421,693
Open SEC filing

Lie Sean

Chief Technology Officer

Sale 10b5-1
Shares
46,214
Price
$210.56
Value
$9,730,820
Open SEC filing

Lie Sean

Chief Technology Officer

Sale 10b5-1
Shares
114,976
Price
$209.86
Value
$24,128,863
Open SEC filing

Lie Sean

Chief Technology Officer

Sale 10b5-1
Shares
119,311
Price
$208.69
Value
$24,899,013
Open SEC filing

Lie Sean

Chief Technology Officer

Sale 10b5-1
Shares
108,507
Price
$207.68
Value
$22,534,734
Open SEC filing

Lie Sean

Chief Technology Officer

Sale 10b5-1
Shares
93,017
Price
$206.67
Value
$19,223,823
Open SEC filing

Lie Sean

Chief Technology Officer

Sale 10b5-1
Shares
133,383
Price
$205.67
Value
$27,432,882
Open SEC filing

Lie Sean

Chief Technology Officer

Sale 10b5-1
Shares
47,766
Price
$204.87
Value
$9,785,820
Open SEC filing

Lie Sean

Chief Technology Officer

Sale 10b5-1
Shares
11,706
Price
$203.78
Value
$2,385,449
Open SEC filing

Lie Sean

Chief Technology Officer

Sale 10b5-1
Shares
24,652
Price
$212.64
Value
$5,242,001
Open SEC filing

Lie Sean

Chief Technology Officer

Sale 10b5-1
Shares
10,715
Price
$211.42
Value
$2,265,365
Open SEC filing

Mallick Dhiraj

Chief Operating Officer

SaleAlert
Shares
1,417
Price
$240.01
Value
$340,094
Open SEC filing

Mallick Dhiraj

Chief Operating Officer

SaleAlert
Shares
17
Price
$238.78
Value
$4,059
Open SEC filing

Mallick Dhiraj

Chief Operating Officer

SaleAlert
Shares
21
Price
$237.23
Value
$4,982
Open SEC filing

Mallick Dhiraj

Chief Operating Officer

SaleAlert
Shares
371
Price
$236.43
Value
$87,716
Open SEC filing

Mallick Dhiraj

Chief Operating Officer

SaleAlert
Shares
550
Price
$235.50
Value
$129,525
Open SEC filing

Mallick Dhiraj

Chief Operating Officer

SaleAlert
Shares
1,078
Price
$234.47
Value
$252,759
Open SEC filing

Mallick Dhiraj

Chief Operating Officer

SaleAlert
Shares
410
Price
$233.31
Value
$95,657
Open SEC filing

Mallick Dhiraj

Chief Operating Officer

SaleAlert
Shares
506
Price
$232.62
Value
$117,706
Open SEC filing

“Alert” means a voluntary, unscheduled transaction according to the filing; it is not an investment recommendation. Official source: SEC EDGAR.