CBRS (Cerebras Systems Inc. Class A Common Stock)
Insider Trading Activity
Every open-market purchase and sale reported by CBRS officers, directors and 10%+ beneficial owners on SEC Form 4, which must be filed within two business days of the transaction. Sales often reflect scheduled 10b5-1 plans or tax withholding rather than a directional view, so read counts alongside the size and the filer.
Market data may be delayed, incomplete, or inaccurate. Not a recommendation to buy, sell, or hold any security. Verify quotes with your broker before trading. See Terms §17.
| Filed | Insider | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-07-01 | Andrew D. Feldman | CEO, President | J | — | — |
| 2026-07-01 | Eric Vishria | Director | J | — | — |
| 2026-07-01 | Dhiraj Mallick | Chief Operating Officer | MIXED | — | — |
| 2026-07-01 | Benchmark Capital Partners VIII, L.P. | 10%+ Owner | MIXED | — | — |
| 2026-06-29 | Sean Lie | Chief Technology Officer | MIXED | — | — |
| 2026-06-29 | Dhiraj Mallick | Chief Operating Officer | MIXED | — | — |
| 2026-06-29 | Yagnesh Patel | Chief Accounting Officer | MIXED | — | — |
| 2026-06-29 | Andrew D. Feldman | CEO, President | MIXED | — | — |
| 2026-06-29 | Yagnesh Patel | Chief Accounting Officer | MIXED | — | — |
| 2026-06-29 | Dhiraj Mallick | Chief Operating Officer | Sell | — | — |
| 2026-06-26 | Lior Susan | Director | J | — | — |
| 2026-06-12 | Lior Susan | Director | C | — | — |
| 2026-05-19 | Benchmark AI Infrastructure Fund B, L.P. | 10%+ Owner | C | — | — |
| 2026-05-19 | Benchmark Capital Management Co. VIII, L.L.C. | 10%+ Owner | C | — | — |
| 2026-05-19 | Foundation Capital VIII, L.P. | 10%+ Owner | C | — | — |
| 2026-05-15 | Yagnesh Patel | Chief Accounting Officer | MIXED | — | — |
| 2026-05-15 | Paul R. III Auvil | Director | J | — | — |
| 2026-05-15 | Robert Patrick Jr. Komin | Chief Financial Officer | J | — | — |
| 2026-05-15 | ELENA A. DONIO | Director | J | — | — |
| 2026-05-15 | Steven Vassallo | Director | C | — | — |
| 2026-05-15 | Sean Lie | Chief Technology Officer | MIXED | — | — |
| 2026-05-15 | Andrew D. Feldman | CEO, President | MIXED | — | — |
| 2026-05-15 | Dhiraj Mallick | Chief Operating Officer | MIXED | — | — |
| 2026-05-15 | Lior Susan | Director | J | — | — |
| Insider | Role | Shares Held | Value |
|---|---|---|---|
| — | Director | 11,539,243 | — |
| — | 10%+ Owner | 2,157,802 | — |
| — | Director | 99,651 | — |
| — | Chief Technology Officer | 10,033 | — |
| — | Chief Operating Officer | 10,000 | — |
| — | Chief Accounting Officer | 9,099 | — |
| — | CEO, President | 4,768 | — |
Form 4 reports a change in beneficial ownership by an officer, director or 10%+ holder, and must be filed within two business days of the transaction — so this is close to real time, unlike the 45-day-lagged 13F institutional data.
Transaction codes matter more than the raw buy/sell count. Code P is an open-market purchase — an insider choosing to buy with their own money, which is the signal most research treats as informative. Code S is a sale, but sales are frequently pre-scheduled under a 10b5-1 plan or cover tax withholding on vesting equity, so a run of sales often says nothing directional. Codes A and M are grants and option exercises rather than open-market decisions.
Full filing history and per-insider positions are on the CBRS quote page; the site-wide leaderboard is on the insider transactions hub.