Insider · CIK 0002132472

Lie Sean

Reports to the SEC for 1 company · SUNNYVALE, CA

sec.gov

Transactions

Companies

Filings

CIK

0002132472

Forms 4 and 5

Insider transactions

50 trades

Date	Company	Role	Code	Shares	Price	Value	Shares after
2026-09-25	CBRSCerebras Systems Inc.S Sale	Chief Technology Officer	SSale	−6,869 sh	$207.54	−$1.43M	331,445
2026-09-25	CBRSCerebras Systems Inc.S Sale	Chief Technology Officer	SSale	−21K sh	$208.41	−$4.38M	338,314
2026-09-25	CBRSCerebras Systems Inc.S Sale	Chief Technology Officer	SSale	−2,200 sh	$204.50	−$450K	309,569
2026-09-25	CBRSCerebras Systems Inc.S Sale	Chief Technology Officer	SSale	−5,900 sh	$205.30	−$1.21M	311,769
2026-09-25	CBRSCerebras Systems Inc.S Sale	Chief Technology Officer	SSale	−30.6K sh	$210.45	−$6.43M	389,327
2026-09-25	CBRSCerebras Systems Inc. · Stock OptionM Exercise/Conversion	Chief Technology Officer	MExercise/Conversion	−117K sh	—	—	172,146
2026-09-25	CBRSCerebras Systems Inc. · Class B Common StockM Exercise/Conversion	Chief Technology Officer	MExercise/Conversion	+120K sh	—	—	7,702,992
2026-09-25	CBRSCerebras Systems Inc.S Sale	Chief Technology Officer	SSale	−9,177 sh	$211.32	−$1.94M	419,892
2026-09-25	CBRSCerebras Systems Inc.G Gift	Chief Technology Officer	GGift	−36K sh	—	—	429,569
2026-09-25	CBRSCerebras Systems Inc.C Conversion	Chief Technology Officer	CConversion	+120K sh	—	—	465,569
2026-09-25	CBRSCerebras Systems Inc. · Class B Common StockC Conversion	Chief Technology Officer	CConversion	−120K sh	—	—	7,582,992
2026-09-25	CBRSCerebras Systems Inc.S Sale	Chief Technology Officer	SSale	−30K sh	$209.53	−$6.28M	359,336
2026-09-25	CBRSCerebras Systems Inc.S Sale	Chief Technology Officer	SSale	−13.8K sh	$206.63	−$2.85M	317,669
2026-09-25	CBRSCerebras Systems Inc.S Sale	Chief Technology Officer	SSale	−500 sh	$212.14	−$106K	429,069
2026-09-25	CBRSCerebras Systems Inc. · Stock OptionM Exercise/Conversion	Chief Technology Officer	MExercise/Conversion	−3,125 sh	—	—	32,420
2026-09-04	CBRSCerebras Systems Inc.C Conversion	Chief Technology Officer	CConversion	+46.1K sh	—	—	415,067
2026-09-04	CBRSCerebras Systems Inc.S Sale	Chief Technology Officer	SSale	−53.5K sh	$210.16	−$11.2M	345,569
2026-09-04	CBRSCerebras Systems Inc. · Stock OptionM Exercise/Conversion	Chief Technology Officer	MExercise/Conversion	−46.1K sh	—	—	289,021
2026-09-04	CBRSCerebras Systems Inc.G Gift	Chief Technology Officer	GGift	−16K sh	—	—	399,029
2026-09-04	CBRSCerebras Systems Inc. · Class B Common StockM Exercise/Conversion	Chief Technology Officer	MExercise/Conversion	+46.1K sh	—	—	7,629,133
2026-09-04	CBRSCerebras Systems Inc. · Class B Common StockC Conversion	Chief Technology Officer	CConversion	−46.1K sh	—	—	7,582,992
2026-08-21	CBRSCerebras Systems Inc.S Sale	Chief Technology Officer	SSale	−16.3K sh	$210.01	−$3.42M	368,926
2026-08-21	CBRSCerebras Systems Inc. · Stock OptionM Exercise/Conversion	Chief Technology Officer	MExercise/Conversion	−16.3K sh	—	—	335,162
2026-08-21	CBRSCerebras Systems Inc. · Class B Common StockM Exercise/Conversion	Chief Technology Officer	MExercise/Conversion	+16.3K sh	—	—	7,599,285
2026-08-21	CBRSCerebras Systems Inc. · Class B Common StockC Conversion	Chief Technology Officer	CConversion	−16.3K sh	—	—	7,582,992
2026-08-21	CBRSCerebras Systems Inc.C Conversion	Chief Technology Officer	CConversion	+16.3K sh	—	—	385,219
2026-08-20	CBRSCerebras Systems Inc.C Conversion	Chief Technology Officer	CConversion	+697K sh	—	—	1,292,247
2026-08-20	CBRSCerebras Systems Inc. · Stock OptionM Exercise/Conversion	Chief Technology Officer	MExercise/Conversion	−48.5K sh	—	—	351,455
2026-08-20	CBRSCerebras Systems Inc.G Gift	Chief Technology Officer	GGift	−213K sh	—	—	1,079,173
2026-08-20	CBRSCerebras Systems Inc. · Stock OptionM Exercise/Conversion	Chief Technology Officer	MExercise/Conversion	−114K sh	—	—	35,545
2026-08-20	CBRSCerebras Systems Inc. · Stock OptionM Exercise/Conversion	Chief Technology Officer	MExercise/Conversion	−87.3K sh	—	—	12,674
2026-08-20	CBRSCerebras Systems Inc. · Class B Common StockM Exercise/Conversion	Chief Technology Officer	MExercise/Conversion	+697K sh	—	—	8,279,790
2026-08-20	CBRSCerebras Systems Inc. · Stock OptionM Exercise/Conversion	Chief Technology Officer	MExercise/Conversion	−308K sh	—	—	41,764
2026-08-20	CBRSCerebras Systems Inc.S Sale	Chief Technology Officer	SSale	−11.7K sh	$203.78	−$2.39M	1,067,467
2026-08-20	CBRSCerebras Systems Inc. · Class B Common StockC Conversion	Chief Technology Officer	CConversion	−697K sh	—	—	7,582,992
2026-08-20	CBRSCerebras Systems Inc. · Stock OptionM Exercise/Conversion	Chief Technology Officer	MExercise/Conversion	−138K sh	—	—	36,764
2026-08-20	CBRSCerebras Systems Inc.S Sale	Chief Technology Officer	SSale	−46.2K sh	$210.56	−$9.73M	404,293
2026-08-20	CBRSCerebras Systems Inc.S Sale	Chief Technology Officer	SSale	−10.7K sh	$211.42	−$2.27M	393,578
2026-08-20	CBRSCerebras Systems Inc.S Sale	Chief Technology Officer	SSale	−24.7K sh	$212.64	−$5.24M	368,926
2026-08-20	CBRSCerebras Systems Inc.S Sale	Chief Technology Officer	SSale	−115K sh	$209.86	−$24.1M	450,507
2026-08-20	CBRSCerebras Systems Inc.S Sale	Chief Technology Officer	SSale	−93K sh	$206.67	−$19.2M	793,301
2026-08-20	CBRSCerebras Systems Inc.S Sale	Chief Technology Officer	SSale	−109K sh	$207.68	−$22.5M	684,794
2026-08-20	CBRSCerebras Systems Inc.S Sale	Chief Technology Officer	SSale	−47.8K sh	$204.87	−$9.79M	1,019,701
2026-08-20	CBRSCerebras Systems Inc.S Sale	Chief Technology Officer	SSale	−119K sh	$208.69	−$24.9M	565,483
2026-08-20	CBRSCerebras Systems Inc.S Sale	Chief Technology Officer	SSale	−133K sh	$205.67	−$27.4M	886,318
2026-08-18	CBRSCerebras Systems Inc. · Class B Common StockC Conversion	Chief Technology Officer	CConversion	−617K sh	—	—	7,582,992
2026-08-18	CBRSCerebras Systems Inc.S Sale	Chief Technology Officer	SSale	−9 sh	$238.78	−$2,149.02	596,220
2026-08-18	CBRSCerebras Systems Inc.S Sale	Chief Technology Officer	SSale	−147 sh	$229.46	−$33.7K	598,125
2026-08-18	CBRSCerebras Systems Inc.S Sale	Chief Technology Officer	SSale	−771 sh	$240.01	−$185K	595,449
2026-08-18	CBRSCerebras Systems Inc.S Sale	Chief Technology Officer	SSale	−95 sh	$228.53	−$21.7K	598,272

Recent filings

Accepted (ET)
Sep 284
Lie Sean0001628280-26-063713
SEC(opens sec.gov)
Sep 84
Lie Sean0001628280-26-060988
SEC(opens sec.gov)

Companies

Cerebras Systems Inc.Chief Technology OfficerCBRS

Address

C/O CEREBRAS SYSTEMS INC. 1237 E. ARQUES AVEUNE

SUNNYVALE, CA, 94085