Lie Sean
Chief Technology Officer
Sale
Calculated transaction value
$24.13M
114,976 shares @ $209.86
Traded
Aug 20, 2026
Filed
Aug 21, 2026
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Cerebras Systems Inc
CBRS
ManufacturingElectronic Equipment
Transactions reported in official disclosures
Price with disclosed trades
Daily closes, past year · marks sit on transaction dates, sized by value
542 trades
| Reporting person | Filed | Transaction | Transaction value | Source | Actions |
|---|---|---|---|---|---|
| Lie Sean Chief Technology Officer | Aug 21, 2026 1-day lag | Sale Aug 20, 2026 | $24.13M Filed shares x price | SEC Form 4 View filing | |
| Lie Sean Chief Technology Officer | Aug 21, 2026 1-day lag | Exercise Aug 20, 2026 | $0 Filed shares x price | SEC Form 4 View filing | |
| Lie Sean Chief Technology Officer | Aug 21, 2026 1-day lag | Sale Aug 20, 2026 | $5.24M Filed shares x price | SEC Form 4 View filing | |
| Lie Sean Chief Technology Officer | Aug 21, 2026 1-day lag | Sale Aug 20, 2026 | $2.39M Filed shares x price | SEC Form 4 View filing | |
| Lie Sean Chief Technology Officer | Aug 21, 2026 1-day lag | Sale Aug 20, 2026 | $2.27M Filed shares x price | SEC Form 4 View filing | |
| Lie Sean Chief Technology Officer | Aug 21, 2026 1-day lag | Exercise Aug 20, 2026 | $0 Filed shares x price | SEC Form 4 View filing | |
| Lie Sean Chief Technology Officer | Aug 21, 2026 1-day lag | Gift Aug 20, 2026 | $0 Filed shares x price | SEC Form 4 View filing | |
| Lie Sean Chief Technology Officer | Aug 21, 2026 1-day lag | Exercise Aug 20, 2026 | $0 Filed shares x price | SEC Form 4 View filing | |
| Lie Sean Chief Technology Officer | Aug 21, 2026 1-day lag | Sale Aug 20, 2026 | $24.9M Filed shares x price | SEC Form 4 View filing | |
| Lie Sean Chief Technology Officer | Aug 21, 2026 1-day lag | Conversion Aug 20, 2026 | Not reported Reported range | SEC Form 4 View filing | |
| Susan Lior Director | Aug 21, 2026 2-day lag | Other Aug 19, 2026 | Not reported Reported range | SEC Form 4 View filing | |
| Susan Lior Director | Aug 21, 2026 2-day lag | Other Aug 19, 2026 | Not reported Reported range | SEC Form 4 View filing | |
| Susan Lior Director | Aug 21, 2026 2-day lag | Other Aug 19, 2026 | Not reported Reported range | SEC Form 4 View filing | |
| Vassallo Steven Director | Aug 20, 2026 2-day lag | Other Aug 18, 2026 | $0 Filed shares x price | SEC Form 4 View filing | |
| Vassallo Steven Director | Aug 20, 2026 2-day lag | Other Aug 18, 2026 | $0 Filed shares x price | SEC Form 4 View filing | |
| Vassallo Steven Director | Aug 20, 2026 2-day lag | Conversion Aug 18, 2026 | Not reported Reported range | SEC Form 4 View filing | |
| Vassallo Steven Director | Aug 20, 2026 2-day lag | Other Aug 18, 2026 | $0 Filed shares x price | SEC Form 4 View filing | |
| Vassallo Steven Director | Aug 20, 2026 2-day lag | Other Aug 18, 2026 | $0 Filed shares x price | SEC Form 4 View filing | |
| Vassallo Steven Director | Aug 20, 2026 2-day lag | Other Aug 18, 2026 | $0 Filed shares x price | SEC Form 4 View filing | |
| Vassallo Steven Director | Aug 20, 2026 2-day lag | Conversion Aug 18, 2026 | Not reported Reported range | SEC Form 4 View filing | |
| Vassallo Steven Director | Aug 20, 2026 2-day lag | Other Aug 18, 2026 | $0 Filed shares x price | SEC Form 4 View filing | |
| Vassallo Steven Director | Aug 20, 2026 2-day lag | Other Aug 18, 2026 | $0 Filed shares x price | SEC Form 4 View filing | |
| Vassallo Steven Director | Aug 20, 2026 2-day lag | Conversion Aug 18, 2026 | Not reported Reported range | SEC Form 4 View filing | |
| Vassallo Steven Director | Aug 20, 2026 2-day lag | Other Aug 18, 2026 | $0 Filed shares x price | SEC Form 4 View filing | |
| Vassallo Steven Director | Aug 20, 2026 2-day lag | Other Aug 18, 2026 | $0 Filed shares x price | SEC Form 4 View filing | |
| Vassallo Steven Director | Aug 20, 2026 2-day lag | Conversion Aug 18, 2026 | Not reported Reported range | SEC Form 4 View filing | |
| Vassallo Steven Director | Aug 20, 2026 2-day lag | Conversion Aug 18, 2026 | Not reported Reported range | SEC Form 4 View filing | |
| Vassallo Steven Director | Aug 20, 2026 2-day lag | Conversion Aug 18, 2026 | Not reported Reported range | SEC Form 4 View filing | |
| Foundation Capital Manageme... 10% owner | Aug 20, 2026 2-day lag | Other Aug 18, 2026 | $0 Filed shares x price | SEC Form 4 View filing | |
| Foundation Capital Manageme... 10% owner | Aug 20, 2026 2-day lag | Conversion Aug 18, 2026 | Not reported Reported range | SEC Form 4 View filing |
Lie Sean
Chief Technology Officer
Exercise
Calculated transaction value
$0
48,545 shares @ $0
Traded
Aug 20, 2026
Filed
Aug 21, 2026
Lie Sean
Chief Technology Officer
Sale
Calculated transaction value
$5.24M
24,652 shares @ $212.64
Traded
Aug 20, 2026
Filed
Aug 21, 2026
Lie Sean
Chief Technology Officer
Sale
Calculated transaction value
$2.39M
11,706 shares @ $203.78
Traded
Aug 20, 2026
Filed
Aug 21, 2026
Lie Sean
Chief Technology Officer
Sale
Calculated transaction value
$2.27M
10,715 shares @ $211.42
Traded
Aug 20, 2026
Filed
Aug 21, 2026
Lie Sean
Chief Technology Officer
Exercise
Calculated transaction value
$0
308,236 shares @ $0
Traded
Aug 20, 2026
Filed
Aug 21, 2026
Lie Sean
Chief Technology Officer
Gift
Calculated transaction value
$0
213,074 shares @ $0
Traded
Aug 20, 2026
Filed
Aug 21, 2026
Lie Sean
Chief Technology Officer
Exercise
Calculated transaction value
$0
696,798 shares @ $0
Traded
Aug 20, 2026
Filed
Aug 21, 2026
Lie Sean
Chief Technology Officer
Sale
Calculated transaction value
$24.9M
119,311 shares @ $208.69
Traded
Aug 20, 2026
Filed
Aug 21, 2026
Lie Sean
Chief Technology Officer
Conversion
Reported value range
Not reported
696,798 shares
Traded
Aug 20, 2026
Filed
Aug 21, 2026
Susan Lior
Director
Other
Reported value range
Not reported
46,422 shares
Traded
Aug 19, 2026
Filed
Aug 21, 2026
Susan Lior
Director
Other
Reported value range
Not reported
46,780 shares
Traded
Aug 19, 2026
Filed
Aug 21, 2026
Susan Lior
Director
Other
Reported value range
Not reported
902,235 shares
Traded
Aug 19, 2026
Filed
Aug 21, 2026
Vassallo Steven
Director
Other
Calculated transaction value
$0
105,210 shares @ $0
Traded
Aug 18, 2026
Filed
Aug 20, 2026
Vassallo Steven
Director
Other
Calculated transaction value
$0
449,885 shares @ $0
Traded
Aug 18, 2026
Filed
Aug 20, 2026
Vassallo Steven
Director
Conversion
Reported value range
Not reported
136,426 shares
Traded
Aug 18, 2026
Filed
Aug 20, 2026
Vassallo Steven
Director
Other
Calculated transaction value
$0
37,453 shares @ $0
Traded
Aug 18, 2026
Filed
Aug 20, 2026
Vassallo Steven
Director
Other
Calculated transaction value
$0
29,741 shares @ $0
Traded
Aug 18, 2026
Filed
Aug 20, 2026
Vassallo Steven
Director
Other
Calculated transaction value
$0
28,373 shares @ $0
Traded
Aug 18, 2026
Filed
Aug 20, 2026
Vassallo Steven
Director
Conversion
Reported value range
Not reported
37,453 shares
Traded
Aug 18, 2026
Filed
Aug 20, 2026
Vassallo Steven
Director
Other
Calculated transaction value
$0
54,126 shares @ $0
Traded
Aug 18, 2026
Filed
Aug 20, 2026
Vassallo Steven
Director
Other
Calculated transaction value
$0
136,426 shares @ $0
Traded
Aug 18, 2026
Filed
Aug 20, 2026
Vassallo Steven
Director
Conversion
Reported value range
Not reported
1,738,913 shares
Traded
Aug 18, 2026
Filed
Aug 20, 2026
Vassallo Steven
Director
Other
Calculated transaction value
$0
1,738,913 shares @ $0
Traded
Aug 18, 2026
Filed
Aug 20, 2026
Vassallo Steven
Director
Other
Calculated transaction value
$0
449,885 shares @ $0
Traded
Aug 18, 2026
Filed
Aug 20, 2026
Vassallo Steven
Director
Conversion
Reported value range
Not reported
1,738,913 shares
Traded
Aug 18, 2026
Filed
Aug 20, 2026
Vassallo Steven
Director
Conversion
Reported value range
Not reported
37,453 shares
Traded
Aug 18, 2026
Filed
Aug 20, 2026
Vassallo Steven
Director
Conversion
Reported value range
Not reported
136,426 shares
Traded
Aug 18, 2026
Filed
Aug 20, 2026
Foundation Capital Management Co. Viii, L.l.c.
10% owner
Other
Calculated transaction value
$0
136,426 shares @ $0
Traded
Aug 18, 2026
Filed
Aug 20, 2026
Foundation Capital Management Co. Viii, L.l.c.
10% owner
Conversion
Reported value range
Not reported
37,453 shares
Traded
Aug 18, 2026
Filed
Aug 20, 2026