Sean Lie sold $25M of CBRS
Chief Technology Officer at Cerebras Systems Inc.. 120,000 shares at an average of $208.97, traded Sep 25, 2026, filed Sep 28, 2026.
Score components
- +15RoleOfficer
- +25Trade size$25.1M at market
- +10Share of holdings soldSold 28% of holdings
- +15Cluster4 insiders selling within 14 days
- -15Exercise and sellShares came from an option exercise in the same filing
- -2010b5-1 planPre-scheduled under a 10b5-1 plan
What happened after comparable sells
Same side and tier, against the S&P 500, at 1, 3 and 6 months. Shown to Pro users; the whole table is on the backtest page.
Price around the trade, and since
From a quarter before the trade to today. The arrow is the trade, the circle the day the filing reached EDGAR, which is the first day anyone outside could act; the dotted line is the S&P 500 rebased to that day's close.
Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value; the dashed line is the close on the filing day, the dotted line SPY rebased to it.Charts by TradingView Lightweight Charts™
Rows in this filing
Every transaction in Form 4 0001628280-26-063713, as filed. Open on EDGAR
| Date | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|
| Sep 25, 2026 | CConversion Class A Common Stock10b5-1 | +120,000 | - | - | 465,569 | 14 d ago |
| Sep 25, 2026 | GGift Class A Common Stock10b5-1 | -36,000 | $0.00 | $0 | 429,569 | 14 d ago |
| Sep 25, 2026 | SOpen-market sale Class A Common Stock10b5-1 | -500 | $212.14 | $106k | 429,069 | 14 d ago |
| Sep 25, 2026 | SOpen-market sale Class A Common Stock10b5-1 | -9,177 | $211.32 | $1.9M | 419,892 | 14 d ago |
| Sep 25, 2026 | SOpen-market sale Class A Common Stock10b5-1 | -30,565 | $210.45 | $6.4M | 389,327 | 14 d ago |
| Sep 25, 2026 | SOpen-market sale Class A Common Stock10b5-1 | -29,991 | $209.53 | $6.3M | 359,336 | 14 d ago |
| Sep 25, 2026 | SOpen-market sale Class A Common Stock10b5-1 | -21,022 | $208.41 | $4.4M | 338,314 | 14 d ago |
| Sep 25, 2026 | SOpen-market sale Class A Common Stock10b5-1 | -6,869 | $207.54 | $1.4M | 331,445 | 14 d ago |
| Sep 25, 2026 | SOpen-market sale Class A Common Stock10b5-1 | -13,776 | $206.63 | $2.8M | 317,669 | 14 d ago |
| Sep 25, 2026 | SOpen-market sale Class A Common Stock10b5-1 | -5,900 | $205.30 | $1.2M | 311,769 | 14 d ago |
| Sep 25, 2026 | SOpen-market sale Class A Common Stock10b5-1 | -2,200 | $204.50 | $450k | 309,569 | 14 d ago |
| Sep 25, 2026 | MOption exercise Stock Optionderivative10b5-1 | -116,875 | $0.00 | $0 | 172,146 | 14 d ago |
| Sep 25, 2026 | MOption exercise Stock Optionderivative10b5-1 | -3,125 | $0.00 | $0 | 32,420 | 14 d ago |
| Sep 25, 2026 | MOption exercise Class B Common Stockderivative10b5-1 | +120,000 | $0.00 | $0 | 7,702,992 | 14 d ago |
| Sep 25, 2026 | CConversion Class B Common Stockderivative10b5-1 | -120,000 | $0.00 | $0 | 7,582,992 | 14 d ago |
Related signals
Other insiders at Cerebras Systems Inc. and this insider’s other filings.
| Score | Company | Insider | Value | Holdings | Filed |
|---|---|---|---|---|---|
| 23Weak | Cerebras Systems Inc. | Yagnesh Patel Chief Accounting Officer | $270k 1,320 shares | -8% | |
| 45Moderate | Cerebras Systems Inc. | Dhiraj Mallick Chief Operating Officer | $81M 396,000 shares | -100% | |
| 62Notable | Cerebras Systems Inc. | Robert Patrick Komin Jr. Chief Financial Officer | $6.6M 32,500 shares | -100% | |
| 50Moderate | Cerebras Systems Inc. | Andrew D. Feldman CEO, President | $7.9M 37,441 shares | -69% | |
| 25Weak | Cerebras Systems Inc. | Sean Lie Chief Technology Officer | $11M 53,460 shares | -13% | |
| 60Notable | Cerebras Systems Inc. | Steven Vassallo director | $11M 50,000 shares | -23% |
Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.