SEC Form 4 reporting owner

Lie Sean

Lie Sean has filed 69 Form 4 transactions reported between May 13, 2026 and September 4, 2026, as Chief Technology Officer of Cerebras Systems Inc..

Name as filed: Lie Sean

Open-market buys, 24 mo

None

reported

Open-market sales, 24 mo

$165.1M

49 lines

Companies

with Form 4 filings

Latest transaction

Sep 4, 2026

transaction date

Roles and reported holdings

CBRSCerebras Systems Inc.
May 13, 2026 – Sep 4, 2026
Chief Technology Officer
Held directly345,569 sh as of Sep 4, 2026 · Form 4
24 months: $165.1M sold

Transaction history

All 69 reported transactions, newest first. Every row links to the Form 4 on SEC EDGAR.

Date	Company	Type	Shares	Price	Value	Owned after	Filing
Sep 4, 2026	CBRSChief Technology Officer	Open-market saleCode S · direct	53,460	$210.16	$11.2M@ $210.16	345,569	Form 4
Sep 4, 2026	CBRSChief Technology Officer	GiftCode G · direct	16,038	—	—	399,029	Form 4
Sep 4, 2026	CBRSChief Technology Officer	Conversion of derivativeCode C · direct	46,141	—	—	415,067	Form 4
Aug 21, 2026	CBRSChief Technology Officer	Conversion of derivativeCode C · direct	16,293	—	—	385,219	Form 4
Aug 20, 2026	CBRSChief Technology Officer	Option exerciseCode M · direct	48,545	—	—	351,455	Form 4
Aug 20, 2026	CBRSChief Technology Officer	Option exerciseCode M · direct	114,455	—	—	35,545	Form 4
Aug 20, 2026	CBRSChief Technology Officer	Option exerciseCode M · direct	87,326	—	—	12,674	Form 4
Aug 20, 2026	CBRSChief Technology Officer	Option exerciseCode M · direct	138,236	—	—	36,764	Form 4
Aug 20, 2026	CBRSChief Technology Officer	Option exerciseCode M · direct	308,236	—	—	41,764	Form 4
Aug 20, 2026	CBRSChief Technology Officer	Open-market saleCode S · direct	24,652	$212.64	$5.2M@ $212.64	368,926	Form 4
Aug 20, 2026	CBRSChief Technology Officer	Open-market saleCode S · direct	10,715	$211.42	$2.3M@ $211.42	393,578	Form 4
Aug 20, 2026	CBRSChief Technology Officer	Open-market saleCode S · direct	46,214	$210.56	$9.7M@ $210.56	404,293	Form 4
Aug 20, 2026	CBRSChief Technology Officer	Open-market saleCode S · direct	114,976	$209.86	$24.1M@ $209.86	450,507	Form 4
Aug 20, 2026	CBRSChief Technology Officer	Open-market saleCode S · direct	119,311	$208.69	$24.9M@ $208.69	565,483	Form 4
Aug 20, 2026	CBRSChief Technology Officer	Open-market saleCode S · direct	108,507	$207.68	$22.5M@ $207.68	684,794	Form 4
Aug 20, 2026	CBRSChief Technology Officer	Open-market saleCode S · direct	93,017	$206.67	$19.2M@ $206.67	793,301	Form 4
Aug 20, 2026	CBRSChief Technology Officer	Open-market saleCode S · direct	133,383	$205.67	$27.4M@ $205.67	886,318	Form 4
Aug 20, 2026	CBRSChief Technology Officer	Open-market saleCode S · direct	47,766	$204.87	$9.8M@ $204.87	1,019,701	Form 4
Aug 20, 2026	CBRSChief Technology Officer	Open-market saleCode S · direct	11,706	$203.78	$2.4M@ $203.78	1,067,467	Form 4
Aug 20, 2026	CBRSChief Technology Officer	GiftCode G · direct	213,074	—	—	1,079,173	Form 4
Aug 20, 2026	CBRSChief Technology Officer	Conversion of derivativeCode C · direct	696,798	—	—	1,292,247	Form 4
Aug 18, 2026	CBRSChief Technology Officer	Open-market saleCode S · direct	771	$240.01	$185K@ $240.01	595,449	Form 4
Aug 18, 2026	CBRSChief Technology Officer	Open-market saleCode S · direct	9	$238.78	$2K@ $238.78	596,220	Form 4
Aug 18, 2026	CBRSChief Technology Officer	Open-market saleCode S · direct	11	$237.23	$3K@ $237.23	596,229	Form 4
Aug 18, 2026	CBRSChief Technology Officer	Open-market saleCode S · direct	203	$236.43	$48K@ $236.43	596,240	Form 4
Aug 18, 2026	CBRSChief Technology Officer	Open-market saleCode S · direct	301	$235.50	$71K@ $235.50	596,443	Form 4
Aug 18, 2026	CBRSChief Technology Officer	Open-market saleCode S · direct	590	$234.47	$138K@ $234.47	596,744	Form 4
Aug 18, 2026	CBRSChief Technology Officer	Open-market saleCode S · direct	224	$233.31	$52K@ $233.31	597,334	Form 4
Aug 18, 2026	CBRSChief Technology Officer	Open-market saleCode S · direct	277	$232.62	$64K@ $232.62	597,558	Form 4
Aug 18, 2026	CBRSChief Technology Officer	Open-market saleCode S · direct	243	$231.57	$56K@ $231.57	597,835	Form 4
Aug 18, 2026	CBRSChief Technology Officer	Open-market saleCode S · direct	47	$230.67	$11K@ $230.67	598,078	Form 4
Aug 18, 2026	CBRSChief Technology Officer	Open-market saleCode S · direct	147	$229.46	$34K@ $229.46	598,125	Form 4
Aug 18, 2026	CBRSChief Technology Officer	Open-market saleCode S · direct	95	$228.53	$22K@ $228.53	598,272	Form 4
Aug 18, 2026	CBRSChief Technology Officer	Open-market saleCode S · direct	347	$227.37	$79K@ $227.37	598,367	Form 4
Aug 18, 2026	CBRSChief Technology Officer	Open-market saleCode S · direct	457	$226.46	$103K@ $226.46	598,714	Form 4
Aug 18, 2026	CBRSChief Technology Officer	Open-market saleCode S · direct	335	$225.51	$76K@ $225.51	599,171	Form 4
Aug 18, 2026	CBRSChief Technology Officer	Open-market saleCode S · direct	202	$224.52	$45K@ $224.52	599,506	Form 4
Aug 18, 2026	CBRSChief Technology Officer	Open-market saleCode S · direct	492	$223.54	$110K@ $223.54	599,708	Form 4
Aug 18, 2026	CBRSChief Technology Officer	Open-market saleCode S · direct	1,599	$222.42	$356K@ $222.42	600,200	Form 4
Aug 18, 2026	CBRSChief Technology Officer	Open-market saleCode S · direct	3,409	$221.47	$755K@ $221.47	601,799	Form 4
Aug 18, 2026	CBRSChief Technology Officer	Open-market saleCode S · direct	3,723	$220.43	$821K@ $220.43	605,208	Form 4
Aug 18, 2026	CBRSChief Technology Officer	Open-market saleCode S · direct	1,894	$219.58	$416K@ $219.58	608,931	Form 4
Aug 18, 2026	CBRSChief Technology Officer	Open-market saleCode S · direct	1,670	$218.54	$365K@ $218.54	610,825	Form 4
Aug 18, 2026	CBRSChief Technology Officer	Open-market saleCode S · direct	1,344	$217.58	$292K@ $217.58	612,495	Form 4
Aug 18, 2026	CBRSChief Technology Officer	Open-market saleCode S · direct	1,807	$216.40	$391K@ $216.40	613,839	Form 4
Aug 18, 2026	CBRSChief Technology Officer	Open-market saleCode S · direct	1,059	$215.67	$228K@ $215.67	615,646	Form 4
Aug 18, 2026	CBRSChief Technology Officer	Open-market saleCode S · direct	1	$214.85	$215@ $214.85	616,705	Form 4
Aug 18, 2026	CBRSChief Technology Officer	Conversion of derivativeCode C · direct	616,706	—	—	616,706	Form 4
Jun 25, 2026	CBRSChief Technology Officer	Open-market saleCode S · direct	104	$186.51	$19K@ $186.51	0	Form 4
Jun 25, 2026	CBRSChief Technology Officer	Open-market saleCode S · direct	705	$184.80	$130K@ $184.80	204	Form 4
Jun 25, 2026	CBRSChief Technology Officer	Open-market saleCode S · direct	300	$180.12	$54K@ $180.12	1,609	Form 4
Jun 25, 2026	CBRSChief Technology Officer	Open-market saleCode S · direct	242	$178.66	$43K@ $178.66	1,909	Form 4
Jun 25, 2026	CBRSChief Technology Officer	Open-market saleCode S · direct	100	$175.57	$18K@ $175.57	2,151	Form 4
Jun 25, 2026	CBRSChief Technology Officer	Open-market saleCode S · direct	200	$173.16	$35K@ $173.16	2,251	Form 4
Jun 25, 2026	CBRSChief Technology Officer	Open-market saleCode S · direct	263	$171.78	$45K@ $171.78	2,451	Form 4
Jun 25, 2026	CBRSChief Technology Officer	Open-market saleCode S · direct	110	$170.57	$19K@ $170.57	2,714	Form 4
Jun 25, 2026	CBRSChief Technology Officer	Open-market saleCode S · direct	400	$169.62	$68K@ $169.62	2,824	Form 4
Jun 25, 2026	CBRSChief Technology Officer	Open-market saleCode S · direct	922	$168.80	$156K@ $168.80	3,224	Form 4
Jun 25, 2026	CBRSChief Technology Officer	Open-market saleCode S · direct	3,353	$165.43	$555K@ $165.43	4,146	Form 4
Jun 25, 2026	CBRSChief Technology Officer	Open-market saleCode S · direct	2,534	$165.21	$419K@ $165.21	7,499	Form 4
Jun 25, 2026	CBRSChief Technology Officer	Conversion of derivativeCode C · direct	10,033	—	—	10,033	Form 4
May 15, 2026	CBRSChief Technology Officer	Other acquisition or dispositionCode J · direct	400,000	—	—	0	Form 4
May 15, 2026	CBRSChief Technology Officer	Other acquisition or dispositionCode J · direct	150,000	—	—	0	Form 4
May 15, 2026	CBRSChief Technology Officer	Other acquisition or dispositionCode J · direct	100,000	—	—	0	Form 4
May 15, 2026	CBRSChief Technology Officer	Other acquisition or dispositionCode J · direct	175,000	—	—	0	Form 4
May 15, 2026	CBRSChief Technology Officer	Other acquisition or dispositionCode J · direct	350,000	—	—	0	Form 4
May 15, 2026	CBRSChief Technology Officer	Other acquisition or dispositionCode J · indirect	180,600	—	—	0	Form 4
May 15, 2026	CBRSChief Technology Officer	Other acquisition or dispositionCode J · direct	8,209,731	—	—	0	Form 4
May 13, 2026	CBRSChief Technology Officer	Shares withheld for tax or exercise priceCode F · direct	96,127	$185.00	$17.8M@ $185.00	8,209,731	Form 4

How this page is built

Every row comes from a Form 4 filed with the SEC, which officers, directors and holders of more than 10% of a company’s stock must file within two business days of a trade. Transactions are grouped by the reporting owner’s name as filed (spacing, capitals and punctuation ignored); two different people filing under an identical name would appear together, and one person filing under two spellings appears on two pages.

Open-market totals count code P purchases and code S sales over the last 24 months. The same trade reported on more than one filing is counted once; when another owner (for example a fund and its general partner) reports the identical trade, they are listed beside it. Holdings are the shares owned after the latest purchase, sale, gift or tax-withholding line, shown separately for direct and indirect ownership; an indirect figure is one holding line, not a total across every trust or entity.

This page describes what was filed with the SEC; it is not investment advice or a recommendation to buy or sell any security.