CBRS.NASDAQCerebras Systems INC
Form 4: Cerebras Systems CTO Sells Shares
Sentiment:
Insider Transaction (Form 4)
Sean Lie, Chief Technology Officer of Cerebras Systems Inc., sold 120,000 shares of common stock on September 25, 2026.
Summary
- Conversion of derivative: acquired 120,000 Class A Common Stock on September 25, 2026; holds 465,569 after (Direct).
- Bona fide gift: disposed of 36,000 Class A Common Stock on September 25, 2026; holds 429,569 after (Direct).
- Open-market sale: disposed of 500 Class A Common Stock at $212.14 ($106,070) on September 25, 2026; holds 429,069 after (Direct).
- Open-market sale: disposed of 9,177 Class A Common Stock at $211.32 ($1,939,284) on September 25, 2026; holds 419,892 after (Direct).
- Open-market sale: disposed of 30,565 Class A Common Stock at $210.45 ($6,432,404) on September 25, 2026; holds 389,327 after (Direct).
- Open-market sale: disposed of 29,991 Class A Common Stock at $209.53 ($6,284,014) on September 25, 2026; holds 359,336 after (Direct).
- Open-market sale: disposed of 21,022 Class A Common Stock at $208.41 ($4,381,195) on September 25, 2026; holds 338,314 after (Direct).
- Open-market sale: disposed of 6,869 Class A Common Stock at $207.54 ($1,425,592) on September 25, 2026; holds 331,445 after (Direct).
- Open-market sale: disposed of 13,776 Class A Common Stock at $206.63 ($2,846,535) on September 25, 2026; holds 317,669 after (Direct).
- Open-market sale: disposed of 5,900 Class A Common Stock at $205.30 ($1,211,270) on September 25, 2026; holds 311,769 after (Direct).
- Open-market sale: disposed of 2,200 Class A Common Stock at $204.50 ($449,900) on September 25, 2026; holds 309,569 after (Direct).
- Option exercise/conversion: disposed of 116,875 Stock Option on September 25, 2026; holds 172,146 after (Direct).
- Option exercise/conversion: disposed of 3,125 Stock Option on September 25, 2026; holds 32,420 after (Direct).
- Option exercise/conversion: acquired 120,000 Class B Common Stock on September 25, 2026; holds 7,702,992 after (Direct).
- Conversion of derivative: disposed of 120,000 Class B Common Stock on September 25, 2026; holds 7,582,992 after (Direct).
Sentiment
Score: 4
Explanation: StockSavvy.ai views this as a mildly negative but low-conviction signal: an insider sold $25,076,264 of stock under a pre-arranged Rule 10b5-1 plan, which is typically routine.
Insider Transactions
Sean Lie — Officer (Chief Technology Officer)
Transaction made under a Rule 10b5-1 trading plan.
| Date | Transaction | Security | Shares | Price | Value | Held After |
|---|---|---|---|---|---|---|
| 2026-09-25 | Conversion of derivative | Class A Common Stock | 120,000 | — | — | 465,569 |
| 2026-09-25 | Bona fide gift | Class A Common Stock | 36,000 | — | — | 429,569 |
| 2026-09-25 | Open-market sale | Class A Common Stock | 500 | $212 | $106.1K | 429,069 |
| 2026-09-25 | Open-market sale | Class A Common Stock | 9,177 | $211 | $1.9M | 419,892 |
| 2026-09-25 | Open-market sale | Class A Common Stock | 30,565 | $210 | $6.4M | 389,327 |
| 2026-09-25 | Open-market sale | Class A Common Stock | 29,991 | $210 | $6.3M | 359,336 |
| 2026-09-25 | Open-market sale | Class A Common Stock | 21,022 | $208 | $4.4M | 338,314 |
| 2026-09-25 | Open-market sale | Class A Common Stock | 6,869 | $208 | $1.4M | 331,445 |
| 2026-09-25 | Open-market sale | Class A Common Stock | 13,776 | $207 | $2.8M | 317,669 |
| 2026-09-25 | Open-market sale | Class A Common Stock | 5,900 | $205 | $1.2M | 311,769 |
| 2026-09-25 | Open-market sale | Class A Common Stock | 2,200 | $205 | $449.9K | 309,569 |
| 2026-09-25 | Option exercise/conversion | Stock Option | 116,875 | — | — | 172,146 |
| 2026-09-25 | Option exercise/conversion | Stock Option | 3,125 | — | — | 32,420 |
| 2026-09-25 | Option exercise/conversion | Class B Common Stock | 120,000 | — | — | 7,702,992 |
| 2026-09-25 | Conversion of derivative | Class B Common Stock | 120,000 | — | — | 7,582,992 |
Key Dates
| Date | Description |
|---|---|
| 2026-09-25 | Conversion of derivative (120,000 shares) |
| 2026-09-25 | Bona fide gift (36,000 shares) |
| 2026-09-25 | Open-market sale (500 shares) |
| 2026-09-25 | Open-market sale (9,177 shares) |
| 2026-09-25 | Open-market sale (30,565 shares) |
| 2026-09-25 | Open-market sale (29,991 shares) |
| 2026-09-25 | Open-market sale (21,022 shares) |
| 2026-09-25 | Open-market sale (6,869 shares) |
| 2026-09-25 | Open-market sale (13,776 shares) |
| 2026-09-25 | Open-market sale (5,900 shares) |
| 2026-09-25 | Open-market sale (2,200 shares) |
| 2026-09-25 | Option exercise/conversion (116,875 shares) |
| 2026-09-25 | Option exercise/conversion (3,125 shares) |
| 2026-09-25 | Option exercise/conversion (120,000 shares) |
| 2026-09-25 | Conversion of derivative (120,000 shares) |
Keywords
insider transaction, Form 4, CBRS, Cerebras Systems Inc., bearish, Sean Lie
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