CBRS SEC Form 4 filings
Cerebras Systems Inc. Latest Insider Trading Activity
Over the past 111 days, Cerebras Systems Inc. (CBRS) has had 140 total open-market insider transactions represented in the displayed records. The latest displayed record by transaction date reports 16 sales by Komin Robert Patrick Jr. (Cerebras Systems Inc. Chief Financial Officer) totaling 32,500 shares at a weighted-average price of $203.53 per share, with the latest transaction dated September 29, 2026. This page shows up to the 10 most recent SEC Form 4 filing records on a 6-hour delay. Sign up for real-time updates and access to 20 years of historic insider trading data.
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| Ticker | Filing Date | Transaction Date | Company | Insider | Title | Transaction | Trade Count | Shares | Avg. Price | Total Value | Position Size Change | SEC Filing |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 10b5-1: Scheduled Form 4 Transaction CBRS | 2026-09-30 | 2026-09-29 | Cerebras Systems Inc. | Komin Robert Patrick Jr. | Chief Financial Officer | Sell | 16 | 32,500 | $203.53 | $6,614,881.88 | 100.00% | View Filing |
| 10b5-1: Scheduled Form 4 Transaction CBRS | 2026-09-30 | 2026-09-29 | Cerebras Systems Inc. | Mallick Dhiraj | Chief Operating Officer | Sell | 19 | 396,000 | $204.04 | $80,798,603.74 | 100.00% | View Filing |
| 10b5-1: Scheduled Form 4 Transaction CBRS | 2026-09-30 | 2026-09-28 | Cerebras Systems Inc. | Patel Yagnesh | Chief Accounting Officer | Sell | 1 | 1,320 | $204.50 | $269,940.00 | 7.92% | View Filing |
| Unexplained: transactions without an ESPP, DRIP, 10b5-1, tax liability, or Explained M/S tag. CBRS | 2026-09-08 | 2026-09-04 | Cerebras Systems Inc. | Vassallo Steven | Director | Sell | 3 | 50,000 | $210.30 | $10,515,135.38 | 8.31% | View Filing |
| 10b5-1: Scheduled Form 4 Transaction CBRS | 2026-09-08 | 2026-09-04 | Cerebras Systems Inc. | Lie Sean | Chief Technology Officer | Sell | 1 | 53,460 | $210.16 | $11,235,153.60 | 13.40% | View Filing |
| 10b5-1: Scheduled Form 4 Transaction CBRS | 2026-09-08 | 2026-09-04 | Cerebras Systems Inc. | Feldman Andrew D. | CEO, President | Sell | 16 | 37,441 | $210.46 | $7,879,687.16 | 5.89% | View Filing |
| Unexplained: transactions without an ESPP, DRIP, 10b5-1, tax liability, or Explained M/S tag. CBRS | 2026-06-29 | 2026-06-26 | Cerebras Systems Inc. | Mallick Dhiraj | Chief Operating Officer | Sell | 28 | 33,314 | $178.19 | $5,936,180.27 | 6.49% | View Filing |
| Unexplained: transactions without an ESPP, DRIP, 10b5-1, tax liability, or Explained M/S tag. CBRS | 2026-06-29 | 2026-06-26 | Cerebras Systems Inc. | Patel Yagnesh | Chief Accounting Officer | Sell | 15 | 4,000 | $174.20 | $696,809.26 | 10.51% | View Filing |
| Tax liability coverage transfers: shares are often sold to offset the tax liability from shares vesting CBRS | 2026-06-29 | 2026-06-25 | Cerebras Systems Inc. | Patel Yagnesh | Chief Accounting Officer | Sell | 29 | 6,079 | $171.53 | $1,042,704.07 | 2.85% | View Filing |
| Tax liability coverage transfers: shares are often sold to offset the tax liability from shares vesting CBRS | 2026-06-29 | 2026-06-25 | Cerebras Systems Inc. | Feldman Andrew D. | CEO, President | Sell | 12 | 17,990 | $173.06 | $3,113,282.92 | 26.66% | View Filing |
⚠️ THE SAMPLE ABOVE IS DEFERRED BY 6 HOURS ⚠️
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