Sean Lie

CIK: 0002132472

Transaction Breakdown

Open Market Buys (P)0 (0.0%)

High conviction signal

Open Market Sales (S)66 (68.8%)

Position reduction

Option Exercises (M)16 (16.7%)

Derivative conversions

Awards (A)0 (0.0%)

Compensation grants

Other (G, F, J, C, D, …)14 (14.6%)

Gifts, tax withholding, conversions, dispositions to the issuer and other codes

Companies & Roles (1)

CBRS

Cerebras Systems Inc.

Officer

Discretionary Trading P&L

Holdings

Transaction History (96 total)

CBRS
Cerebras Systems Inc.
Oct 27, 2026
Exercise(M)
Class B Common Stock
Direct
32K shares-
CBRS
Cerebras Systems Inc.
Oct 27, 2026
Exercise(M)
Stock Option
Direct
3.1K shares-
CBRS
Cerebras Systems Inc.
Oct 27, 2026
Sale(S)
Direct
45.4K shares at avg. $115.46$5.2M
CBRS
Cerebras Systems Inc.
Oct 27, 2026
Conversion(C)
Direct
32K shares-
CBRS
Cerebras Systems Inc.
Oct 27, 2026
Gift(G)
Direct
18K shares-
CBRS
Cerebras Systems Inc.
Oct 27, 2026
Exercise(M)
Stock Option
Direct
28.9K shares-
CBRS
Cerebras Systems Inc.
Oct 27, 2026
Sale(S)
Direct
100 shares at avg. $113.92$11K
CBRS
Cerebras Systems Inc.
Oct 27, 2026
Sale(S)
Direct
14.5K shares at avg. $116.82$1.7M
CBRS
Cerebras Systems Inc.
Sep 25, 2026
Sale(S)
Direct
30K shares at avg. $209.53$6.3M
CBRS
Cerebras Systems Inc.
Sep 25, 2026
Sale(S)
Direct
21K shares at avg. $208.41$4.4M
CBRS
Cerebras Systems Inc.
Sep 25, 2026
Sale(S)
Direct
500 shares at avg. $212.14$106K
CBRS
Cerebras Systems Inc.
Sep 25, 2026
Gift(G)
Direct
36K shares-
CBRS
Cerebras Systems Inc.
Sep 25, 2026
Sale(S)
Direct
9.2K shares at avg. $211.32$1.9M
CBRS
Cerebras Systems Inc.
Sep 25, 2026
Sale(S)
Direct
30.6K shares at avg. $210.45$6.4M
CBRS
Cerebras Systems Inc.
Sep 25, 2026
Conversion(C)
Direct
120K shares-
CBRS
Cerebras Systems Inc.
Sep 25, 2026
Exercise(M)
Stock Option
Direct
116.9K shares-
CBRS
Cerebras Systems Inc.
Sep 25, 2026
Exercise(M)
Stock Option
Direct
3.1K shares-
CBRS
Cerebras Systems Inc.
Sep 25, 2026
Sale(S)
Direct
2.2K shares at avg. $204.50$450K
CBRS
Cerebras Systems Inc.
Sep 25, 2026
Sale(S)
Direct
5.9K shares at avg. $205.30$1.2M
CBRS
Cerebras Systems Inc.
Sep 25, 2026
Sale(S)
Direct
6.9K shares at avg. $207.54$1.4M
CBRS
Cerebras Systems Inc.
Sep 25, 2026
Sale(S)
Direct
13.8K shares at avg. $206.63$2.8M
CBRS
Cerebras Systems Inc.
Sep 25, 2026
Exercise(M)
Class B Common Stock
Direct
120K shares-
CBRS
Cerebras Systems Inc.
Sep 4, 2026
Sale(S)
Direct
53.5K shares at avg. $210.16$11.2M
CBRS
Cerebras Systems Inc.
Sep 4, 2026
Gift(G)
Direct
16K shares-
CBRS
Cerebras Systems Inc.
Sep 4, 2026
Exercise(M)
Class B Common Stock
Direct
46.1K shares-

		Type	Shares	Price		Ownership
Oct 27, 2026	CBRS Cerebras Systems Inc.	Exercise(M) Class B Common Stock	32,023	-	-	Direct
Oct 27, 2026	CBRS Cerebras Systems Inc.	Exercise(M) Stock Option	3,125	-	-	Direct
Oct 27, 2026	CBRS Cerebras Systems Inc.	Sale(S)	45,400	$115.46	$5,241,884	Direct
Oct 27, 2026	CBRS Cerebras Systems Inc.	Conversion(C)	32,023	-	$0	Direct
Oct 27, 2026	CBRS Cerebras Systems Inc.	Gift(G)	18,000	-	$0	Direct
Oct 27, 2026	CBRS Cerebras Systems Inc.	Exercise(M) Stock Option	28,898	-	-	Direct
Oct 27, 2026	CBRS Cerebras Systems Inc.	Sale(S)	100	$113.92	$11,392	Direct
Oct 27, 2026	CBRS Cerebras Systems Inc.	Sale(S)	14,500	$116.82	$1,693,890	Direct
Sep 25, 2026	CBRS Cerebras Systems Inc.	Sale(S)	29,991	$209.53	$6,284,014	Direct
Sep 25, 2026	CBRS Cerebras Systems Inc.	Sale(S)	21,022	$208.41	$4,381,195	Direct
Sep 25, 2026	CBRS Cerebras Systems Inc.	Sale(S)	500	$212.14	$106,070	Direct
Sep 25, 2026	CBRS Cerebras Systems Inc.	Gift(G)	36,000	-	$0	Direct
Sep 25, 2026	CBRS Cerebras Systems Inc.	Sale(S)	9,177	$211.32	$1,939,284	Direct
Sep 25, 2026	CBRS Cerebras Systems Inc.	Sale(S)	30,565	$210.45	$6,432,404	Direct
Sep 25, 2026	CBRS Cerebras Systems Inc.	Conversion(C)	120,000	-	$0	Direct
Sep 25, 2026	CBRS Cerebras Systems Inc.	Exercise(M) Stock Option	116,875	-	-	Direct
Sep 25, 2026	CBRS Cerebras Systems Inc.	Exercise(M) Stock Option	3,125	-	-	Direct
Sep 25, 2026	CBRS Cerebras Systems Inc.	Sale(S)	2,200	$204.50	$449,900	Direct
Sep 25, 2026	CBRS Cerebras Systems Inc.	Sale(S)	5,900	$205.30	$1,211,270	Direct
Sep 25, 2026	CBRS Cerebras Systems Inc.	Sale(S)	6,869	$207.54	$1,425,592	Direct
Sep 25, 2026	CBRS Cerebras Systems Inc.	Sale(S)	13,776	$206.63	$2,846,535	Direct
Sep 25, 2026	CBRS Cerebras Systems Inc.	Exercise(M) Class B Common Stock	120,000	-	-	Direct
Sep 4, 2026	CBRS Cerebras Systems Inc.	Sale(S)	53,460	$210.16	$11,235,154	Direct
Sep 4, 2026	CBRS Cerebras Systems Inc.	Gift(G)	16,038	-	$0	Direct
Sep 4, 2026	CBRS Cerebras Systems Inc.	Exercise(M) Class B Common Stock	46,141	-	-	Direct

1-25 of 96 transactions

About Lie Sean

Lie Sean (SEC CIK 0002132472) files insider reports with the SEC as Chief Technology Officer of Cerebras Systems Inc. (CBRS).

Signal8 holds 8 ownership filings by Lie Sean (1 Form 3, 7 Form 4), filed between May 13, 2026 and Oct 28, 2026. Those filings report 96 transactions, from May 13, 2026 to Oct 27, 2026. Signal8's Form 4 history starts in Sep 2024.

The business address on Lie Sean's filings is in SUNNYVALE, CA.

Recent filings by Lie Sean

Oct 27, 2026: Option exercises of CBRS derivative securities (2 lines, Form 4, code M).
Oct 27, 2026: Open-market sale of CBRS shares (Form 4, code S).
Oct 27, 2026: Conversion of CBRS shares (Form 4, code C).
Oct 27, 2026: Gift of CBRS shares (Form 4, code G).
Oct 27, 2026: Option exercise of CBRS derivative securities (Form 4, code M).

Other insiders filing for Cerebras Systems Inc. (CBRS)

Vishria Eric, Director
Feldman Andrew D., CEO, President
Susan Lior, Director
Vassallo Steven, Director
Benchmark AI Infrastructure Management Co., L.L.C., 10% Owner
Benchmark Capital Management Co. VIII, L.L.C., 10% Owner

How to read Form 4 transaction codes