Insider · CIK 0002039572
Dhiraj Mallick
Files at CBRS (Cerebras Systems Inc.). First filing Jun 29, 2026, latest Sep 30, 2026.
In brief
Dhiraj Mallick files SEC Form 4 as COO at CBRS (Cerebras Systems Inc.). Since Jun 29, 2026, Dhiraj Mallick has reported 0 open-market buys worth $0 and 5 open-market sells worth $104M, the latest filed on Sep 30, 2026.
A track record needs three past buys with six months of prices behind them; Dhiraj Mallick has 0, so none is measured yet.
The newest scored trade: sold $81M of CBRS on Sep 29, 2026, filed Sep 30, 2026, scored 45 (moderate), under a 10b5-1 plan. In the last 12 months: 0 buys worth $0 and 5 sells worth $104M.
Where the trades landed
Last year at the company this insider has traded most, with each buy and sell on the bar it happened.
CBRS: Cerebras Systems Inc.
Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value. Click a marked bar to open the signal.Charts by TradingView Lightweight Charts™
Signals
This insider’s open-market buys and sells, scored.
| Score | Company | Value | Holdings | Price context | Filed |
|---|---|---|---|---|---|
| 45Moderate | Cerebras Systems Inc. | $81M 396,000 shares | -100% | - | |
| 65Notable | Cerebras Systems Inc. | $8.6M 38,889 shares | -24% | +31% from low-29% from high | |
| 80Strong | Cerebras Systems Inc. | $2.1M 10,000 shares | -100% | +31% from low-29% from high | |
| 80Strong | Cerebras Systems Inc. | $6.1M 36,131 shares | -52% | 0% from low-46% from high | |
| 80Strong | Cerebras Systems Inc. | $5.9M 33,314 shares | -100% | 0% from low-46% from high |
Planned sales
Form 144 notices this insider filed before selling restricted or control stock, newest first.
| Filed | Company | Shares | Value | Sale date | Past 3 months |
|---|---|---|---|---|---|
| Sep 29, 2026 | CBRS Cerebras Systems Inc. | 396,000 0.35% of outstanding | $78M | Sep 29, 2026 | $8.6M |
| Aug 18, 2026 | CBRS Cerebras Systems Inc. | 38,889 0.03% of outstanding | $9.8M | Aug 18, 2026 | $6.1M |
Transactions
The newest 50 of 128 rows this insider has filed.
| Date | Company | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|---|
| Sep 29, 2026 | CBRS Cerebras Systems Inc. | CConversion Class A Common Stock10b5-1 | +276,000 | $0.00 | $0 | 396,000 | 13 d ago |
| Sep 29, 2026 | CBRS Cerebras Systems Inc. | SOpen-market sale Class A Common Stock10b5-1 | -598 | $212.93 | $127k | 395,402 | 13 d ago |
| Sep 29, 2026 | CBRS Cerebras Systems Inc. | SOpen-market sale Class A Common Stock10b5-1 | -18,274 | $212.20 | $3.9M | 377,128 | 13 d ago |
| Sep 29, 2026 | CBRS Cerebras Systems Inc. | SOpen-market sale Class A Common Stock10b5-1 | -41,391 | $211.29 | $8.7M | 335,737 | 13 d ago |
| Sep 29, 2026 | CBRS Cerebras Systems Inc. | SOpen-market sale Class A Common Stock10b5-1 | -46,427 | $210.27 | $9.8M | 289,310 | 13 d ago |
| Sep 29, 2026 | CBRS Cerebras Systems Inc. | SOpen-market sale Class A Common Stock10b5-1 | -41,278 | $209.33 | $8.6M | 248,032 | 13 d ago |
| Sep 29, 2026 | CBRS Cerebras Systems Inc. | SOpen-market sale Class A Common Stock10b5-1 | -20,714 | $208.38 | $4.3M | 227,318 | 13 d ago |
| Sep 29, 2026 | CBRS Cerebras Systems Inc. | SOpen-market sale Class A Common Stock10b5-1 | -9,652 | $207.06 | $2.0M | 217,666 | 13 d ago |
| Sep 29, 2026 | CBRS Cerebras Systems Inc. | SOpen-market sale Class A Common Stock10b5-1 | -9,047 | $206.13 | $1.9M | 208,619 | 13 d ago |
| Sep 29, 2026 | CBRS Cerebras Systems Inc. | SOpen-market sale Class A Common Stock10b5-1 | -8,729 | $205.17 | $1.8M | 199,890 | 13 d ago |
| Sep 29, 2026 | CBRS Cerebras Systems Inc. | SOpen-market sale Class A Common Stock10b5-1 | -27,492 | $204.17 | $5.6M | 172,398 | 13 d ago |
| Sep 29, 2026 | CBRS Cerebras Systems Inc. | SOpen-market sale Class A Common Stock10b5-1 | -9,682 | $203.37 | $2.0M | 162,716 | 13 d ago |
| Sep 29, 2026 | CBRS Cerebras Systems Inc. | SOpen-market sale Class A Common Stock10b5-1 | -5,637 | $201.91 | $1.1M | 157,079 | 13 d ago |
| Sep 29, 2026 | CBRS Cerebras Systems Inc. | SOpen-market sale Class A Common Stock10b5-1 | -22,915 | $200.96 | $4.6M | 134,164 | 13 d ago |
| Sep 29, 2026 | CBRS Cerebras Systems Inc. | SOpen-market sale Class A Common Stock10b5-1 | -17,848 | $199.89 | $3.6M | 116,316 | 13 d ago |
| Sep 29, 2026 | CBRS Cerebras Systems Inc. | SOpen-market sale Class A Common Stock10b5-1 | -17,000 | $198.96 | $3.4M | 99,316 | 13 d ago |
| Sep 29, 2026 | CBRS Cerebras Systems Inc. | SOpen-market sale Class A Common Stock10b5-1 | -5,170 | $197.85 | $1.0M | 94,146 | 13 d ago |
| Sep 29, 2026 | CBRS Cerebras Systems Inc. | SOpen-market sale Class A Common Stock10b5-1 | -6,613 | $197.05 | $1.3M | 87,533 | 13 d ago |
| Sep 29, 2026 | CBRS Cerebras Systems Inc. | SOpen-market sale Class A Common Stock10b5-1 | -18,703 | $195.56 | $3.7M | 68,830 | 13 d ago |
| Sep 29, 2026 | CBRS Cerebras Systems Inc. | SOpen-market sale Class A Common Stock10b5-1 | -68,830 | $194.91 | $13M | 0 | 13 d ago |
| Sep 29, 2026 | CBRS Cerebras Systems Inc. | MOption exercise Stock Optionderivative10b5-1 | -276,000 | $0.00 | $0 | 91,370 | 13 d ago |
| Sep 29, 2026 | CBRS Cerebras Systems Inc. | MOption exercise Class B Common Stockderivative10b5-1 | +276,000 | $0.00 | $0 | 796,807 | 13 d ago |
| Sep 29, 2026 | CBRS Cerebras Systems Inc. | CConversion Class B Common Stockderivative10b5-1 | -276,000 | $0.00 | $0 | 520,807 | 13 d ago |
| Aug 18, 2026 | CBRS Cerebras Systems Inc. | CConversion Class A Common Stock | +158,889 | - | - | 158,889 | Aug 20, 2026 |
| Aug 18, 2026 | CBRS Cerebras Systems Inc. | SOpen-market sale Class A Common Stock | -2 | $214.85 | $430 | 158,887 | Aug 20, 2026 |
| Aug 18, 2026 | CBRS Cerebras Systems Inc. | SOpen-market sale Class A Common Stock | -1,937 | $215.67 | $418k | 156,950 | Aug 20, 2026 |
| Aug 18, 2026 | CBRS Cerebras Systems Inc. | SOpen-market sale Class A Common Stock | -3,305 | $216.40 | $715k | 153,645 | Aug 20, 2026 |
| Aug 18, 2026 | CBRS Cerebras Systems Inc. | SOpen-market sale Class A Common Stock | -2,458 | $217.58 | $535k | 151,187 | Aug 20, 2026 |
| Aug 18, 2026 | CBRS Cerebras Systems Inc. | SOpen-market sale Class A Common Stock | -3,055 | $218.54 | $668k | 148,132 | Aug 20, 2026 |
| Aug 18, 2026 | CBRS Cerebras Systems Inc. | SOpen-market sale Class A Common Stock | -3,465 | $219.58 | $761k | 144,667 | Aug 20, 2026 |
| Aug 18, 2026 | CBRS Cerebras Systems Inc. | SOpen-market sale Class A Common Stock | -6,810 | $220.43 | $1.5M | 137,857 | Aug 20, 2026 |
| Aug 18, 2026 | CBRS Cerebras Systems Inc. | SOpen-market sale Class A Common Stock | -6,237 | $221.47 | $1.4M | 131,620 | Aug 20, 2026 |
| Aug 18, 2026 | CBRS Cerebras Systems Inc. | SOpen-market sale Class A Common Stock | -2,925 | $222.42 | $651k | 128,695 | Aug 20, 2026 |
| Aug 18, 2026 | CBRS Cerebras Systems Inc. | SOpen-market sale Class A Common Stock | -900 | $223.54 | $201k | 127,795 | Aug 20, 2026 |
| Aug 18, 2026 | CBRS Cerebras Systems Inc. | SOpen-market sale Class A Common Stock | -369 | $224.52 | $83k | 127,426 | Aug 20, 2026 |
| Aug 18, 2026 | CBRS Cerebras Systems Inc. | SOpen-market sale Class A Common Stock | -613 | $225.51 | $138k | 126,813 | Aug 20, 2026 |
| Aug 18, 2026 | CBRS Cerebras Systems Inc. | SOpen-market sale Class A Common Stock | -837 | $226.46 | $190k | 125,976 | Aug 20, 2026 |
| Aug 18, 2026 | CBRS Cerebras Systems Inc. | SOpen-market sale Class A Common Stock | -635 | $227.37 | $144k | 125,341 | Aug 20, 2026 |
| Aug 18, 2026 | CBRS Cerebras Systems Inc. | SOpen-market sale Class A Common Stock | -173 | $228.53 | $40k | 125,168 | Aug 20, 2026 |
| Aug 18, 2026 | CBRS Cerebras Systems Inc. | SOpen-market sale Class A Common Stock | -268 | $229.46 | $61k | 124,900 | Aug 20, 2026 |
| Aug 18, 2026 | CBRS Cerebras Systems Inc. | SOpen-market sale Class A Common Stock | -86 | $230.67 | $20k | 124,814 | Aug 20, 2026 |
| Aug 18, 2026 | CBRS Cerebras Systems Inc. | SOpen-market sale Class A Common Stock | -444 | $231.57 | $103k | 124,370 | Aug 20, 2026 |
| Aug 18, 2026 | CBRS Cerebras Systems Inc. | SOpen-market sale Class A Common Stock | -506 | $232.62 | $118k | 123,864 | Aug 20, 2026 |
| Aug 18, 2026 | CBRS Cerebras Systems Inc. | SOpen-market sale Class A Common Stock | -410 | $233.31 | $96k | 123,454 | Aug 20, 2026 |
| Aug 18, 2026 | CBRS Cerebras Systems Inc. | SOpen-market sale Class A Common Stock | -1,078 | $234.47 | $253k | 122,376 | Aug 20, 2026 |
| Aug 18, 2026 | CBRS Cerebras Systems Inc. | SOpen-market sale Class A Common Stock | -550 | $235.50 | $130k | 121,826 | Aug 20, 2026 |
| Aug 18, 2026 | CBRS Cerebras Systems Inc. | SOpen-market sale Class A Common Stock | -371 | $236.43 | $88k | 121,455 | Aug 20, 2026 |
| Aug 18, 2026 | CBRS Cerebras Systems Inc. | SOpen-market sale Class A Common Stock | -21 | $237.23 | $4,982 | 121,434 | Aug 20, 2026 |
| Aug 18, 2026 | CBRS Cerebras Systems Inc. | SOpen-market sale Class A Common Stock | -17 | $238.78 | $4,059 | 121,417 | Aug 20, 2026 |
| Aug 18, 2026 | CBRS Cerebras Systems Inc. | SOpen-market sale Class A Common Stock | -1,417 | $240.01 | $340k | 120,000 | Aug 20, 2026 |
Questions about Dhiraj Mallick
Answered from the filings on this page, as of the latest one.
Is Dhiraj Mallick buying or selling?
In the last 12 months Dhiraj Mallick reported 0 open-market buys worth $0 and 5 open-market sells worth $104M on SEC Form 4; the latest was sold $81M of CBRS on Sep 29, 2026. Grants, option exercises and tax withholding are not counted.
How did Dhiraj Mallick's past buys perform?
Not measured yet. InsiderTell needs three past buys with six months of prices to publish a track record, and Dhiraj Mallick has 0.
Where does Dhiraj Mallick file Form 4?
Dhiraj Mallick has filed Form 4 at CBRS (Cerebras Systems Inc.) as Chief Operating Officer. A Form 4 is required of officers, directors and holders of more than 10% of a share class within two business days of a trade.
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.