Form 4: Cerebras Systems CTO Sells Shares
Insider Transaction (Form 4)
Sean Lie, Chief Technology Officer of Cerebras Systems Inc., sold 53,460 shares of common stock on September 4, 2026 for $210.16 per share.
Summary
- Conversion of derivative: acquired 46,141 Class A Common Stock on September 4, 2026; holds 415,067 after (Direct).
- Bona fide gift: disposed of 16,038 Class A Common Stock on September 4, 2026; holds 399,029 after (Direct).
- Open-market sale: disposed of 53,460 Class A Common Stock at $210.16 ($11,235,154) on September 4, 2026; holds 345,569 after (Direct).
- Option exercise/conversion: disposed of 46,141 Stock Option on September 4, 2026; holds 289,021 after (Direct).
- Option exercise/conversion: acquired 46,141 Class B Common Stock on September 4, 2026; holds 7,629,133 after (Direct).
- Conversion of derivative: disposed of 46,141 Class B Common Stock on September 4, 2026; holds 7,582,992 after (Direct).
Sentiment
Score: 2
Explanation: StockSavvy.ai views this as a mildly negative signal: an insider sold $11,235,154 of stock on the open market.
Insider Transactions
Sean Lie — Officer (Chief Technology Officer)
| Date | Transaction | Security | Shares | Price | Value | Held After |
|---|---|---|---|---|---|---|
| 2026-09-04 | Conversion of derivative | Class A Common Stock | 46,141 | — | — | 415,067 |
| 2026-09-04 | Bona fide gift | Class A Common Stock | 16,038 | — | — | 399,029 |
| 2026-09-04 | Open-market sale | Class A Common Stock | 53,460 | $210 | $11.2M | 345,569 |
| 2026-09-04 | Option exercise/conversion | Stock Option | 46,141 | — | — | 289,021 |
| 2026-09-04 | Option exercise/conversion | Class B Common Stock | 46,141 | — | — | 7,629,133 |
| 2026-09-04 | Conversion of derivative | Class B Common Stock | 46,141 | — | — | 7,582,992 |
Key Dates
| Date | Description |
|---|---|
| 2026-09-04 | Conversion of derivative (46,141 shares) |
| 2026-09-04 | Bona fide gift (16,038 shares) |
| 2026-09-04 | Open-market sale (53,460 shares) |
| 2026-09-04 | Option exercise/conversion (46,141 shares) |
| 2026-09-04 | Option exercise/conversion (46,141 shares) |
| 2026-09-04 | Conversion of derivative (46,141 shares) |
Keywords
insider transaction, Form 4, CBRS, Cerebras Systems Inc., bearish, Sean Lie
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