Cerebras Systems Inc. Insider Trading Activity
Every SEC Form 4 insider transaction reported for Cerebras Systems Inc. (CBRS), sourced directly from SEC EDGAR and updated as new filings are accepted.
By Trabud · Insider-trading data from SEC EDGAR
Latest filing:
Compiled automatically from SEC EDGAR Form 4 filings and refreshed daily. Figures count purchases (code P) and sales (code S) only — not grants, option exercises, or gifts. How this page is built. Not investment advice.
Quick Answer
Are CBRS insiders buying or selling?
In the last 12 months, Cerebras Systems Inc. insiders reported 0 open-market purchases ($0) and 22 sales ($408.4M) — net selling of $408.4M. Since June 2026, Trabud has recorded 22 Form 4 filings for CBRS: 0 buys ($0) and 22 sells ($408.4M).
Source: SEC EDGAR Form 4
Key Statistics (June 2026 – Sep 30, 2026)
Total Form 4 filings
22
SEC EDGAR
Insider filers
7
Insider buys (0)
$0
Insider sells (22)
$408.4M
Insider sentiment
Net sellingNet insider flow of $408.4M in net selling since June 2026, and $408.4M in net selling over the last 12 months.
Recent CBRS insider transactions
| Date | Insider | Role | Type | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|---|
| Sep 30, 2026 | Robert Patrick Komin Jr. | Chief Financial Officer | Sale | 32.5K | $203.53 | $6.6M | SEC ↗ |
| Sep 30, 2026 | Dhiraj Mallick | Chief Operating Officer | Sale | 396.0K | $204.04 | $80.8M | SEC ↗ |
| Sep 30, 2026 | Yagnesh Patel | Chief Accounting Officer | Sale | 1.3K | $204.50 | $269.9K | SEC ↗ |
| Sep 28, 2026 | Sean Lie | Chief Technology Officer | Sale | 120.0K | $208.97 | $25.1M | SEC ↗ |
| Sep 9, 2026 | Steven Vassallo | Director | Sale | 50.0K | $210.30 | $10.5M | SEC ↗ |
| Sep 9, 2026 | Sean Lie | Chief Technology Officer | Sale | 53.5K | $210.16 | $11.2M | SEC ↗ |
| Sep 9, 2026 | Andrew D. Feldman | CEO, President | Sale | 37.4K | $210.46 | $7.9M | SEC ↗ |
| Aug 25, 2026 | Andrew D. Feldman | CEO, President | Sale | 237.6K | $199.27 | $47.3M | SEC ↗ |
| Aug 22, 2026 | Sean Lie | Chief Technology Officer | Sale | 726.5K | $207.90 | $151.1M | SEC ↗ |
| Aug 21, 2026 | Yagnesh Patel | Chief Accounting Officer | Sale | 4.6K | $222.22 | $1.0M | SEC ↗ |
| Aug 21, 2026 | Dhiraj Mallick | Chief Operating Officer | Sale | 38.9K | $222.22 | $8.6M | SEC ↗ |
| Aug 21, 2026 | Sean Lie | Chief Technology Officer | Sale | 21.3K | $222.22 | $4.7M | SEC ↗ |
| Aug 20, 2026 | Andrew D. Feldman | CEO, President | Sale | 26.6K | $222.22 | $5.9M | SEC ↗ |
| Aug 19, 2026 | Eric Vishria | Director | Sale | 68.3K | $229.77 | $15.7M | SEC ↗ |
| Aug 18, 2026 | Steven Vassallo | Director | Sale | 50.0K | $218.18 | $10.9M | SEC ↗ |
| Jul 1, 2026 | Dhiraj Mallick | Chief Operating Officer | Sale | 10.0K | $206.51 | $2.1M | SEC ↗ |
| Jun 29, 2026 | Dhiraj Mallick | Chief Operating Officer | Sale | 33.3K | $178.19 | $5.9M | SEC ↗ |
| Jun 29, 2026 | Dhiraj Mallick | Chief Operating Officer | Sale | 36.1K | $169.28 | $6.1M | SEC ↗ |
| Jun 29, 2026 | Yagnesh Patel | Chief Accounting Officer | Sale | 4.0K | $174.20 | $696.8K | SEC ↗ |
| Jun 29, 2026 | Yagnesh Patel | Chief Accounting Officer | Sale | 6.1K | $171.53 | $1.0M | SEC ↗ |
| Jun 29, 2026 | Andrew D. Feldman | CEO, President | Sale | 18.0K | $173.06 | $3.1M | SEC ↗ |
| Jun 29, 2026 | Sean Lie | Chief Technology Officer | Sale | 10.0K | $170.07 | $1.7M | SEC ↗ |
Showing the 22 most recent of 22 Form 4 filings for Cerebras Systems Inc..
Most active CBRS insiders
- Dhiraj Mallick5 filings
- Sean Lie5 filings
- Andrew D. Feldman4 filings
- Yagnesh Patel4 filings
- Steven Vassallo2 filings
Ask anything about CBRS insider activity
Use Trabud's AI agent to query Cerebras Systems Inc.'s Form 4 history in plain English — "Show me CBRS CEO purchases this year" or compare it against any other ticker.
Open the AI agentCBRS insider trading FAQ
Are Cerebras Systems Inc. insiders buying or selling?
In the last 12 months, Cerebras Systems Inc. insiders reported 0 open-market purchases ($0) and 22 sales ($408.4M) — net selling of $408.4M. Since June 2026, Trabud has recorded 22 Form 4 filings for CBRS: 0 buys ($0) and 22 sells ($408.4M). Over the full record that is net selling of $408.4M.
How many insiders trade CBRS stock?
7 distinct insider filers — officers, directors, 10%+ owners, and investment groups filing jointly — have reported Form 4 transactions for Cerebras Systems Inc.. The most recent filing was accepted on Sep 30, 2026.
Where does Trabud get CBRS insider trading data?
All CBRS insider trading data comes directly from official SEC EDGAR Form 4 filings, which corporate insiders must submit within two business days of a transaction under Section 16(a) of the Securities Exchange Act of 1934.