CBRS: Cerebras Systems, Inc. insider trading, 5% holders and institutional ownership
From public SEC filings: open-market insider purchases and sales (Form 4, last 180 days), holders of 5% or more (Schedules 13D and 13G) and institutional ownership (Form 13F). Insider and 5% data delayed 48 hours.
Insider trading
0 open-market buys totaling - and 45 sales totaling $112.76M in the last 180 days.
Insider sales
| Trade date | Insider | Role | Value | 10b5-1 plan |
|---|---|---|---|---|
| 2026-09-29 | Komin Robert Patrick Jr. | CFO | $388K | yes |
| 2026-09-29 | Komin Robert Patrick Jr. | CFO | $585K | yes |
| 2026-09-29 | Komin Robert Patrick Jr. | CFO | $588K | yes |
| 2026-09-29 | Komin Robert Patrick Jr. | CFO | $459K | yes |
| 2026-09-29 | Komin Robert Patrick Jr. | CFO | $145K | yes |
| 2026-09-29 | Komin Robert Patrick Jr. | CFO | $165K | yes |
| 2026-09-29 | Komin Robert Patrick Jr. | CFO | $123K | yes |
| 2026-09-29 | Komin Robert Patrick Jr. | CFO | $327K | yes |
| 2026-09-29 | Komin Robert Patrick Jr. | CFO | $163K | yes |
| 2026-09-29 | Komin Robert Patrick Jr. | CFO | $81K | yes |
| 2026-09-29 | Komin Robert Patrick Jr. | CFO | $2.25M | yes |
| 2026-09-29 | Komin Robert Patrick Jr. | CFO | $226K | yes |
| 2026-09-29 | Komin Robert Patrick Jr. | CFO | $173K | yes |
| 2026-09-29 | Komin Robert Patrick Jr. | CFO | $135K | yes |
| 2026-09-29 | Komin Robert Patrick Jr. | CFO | $218K | yes |
| 2026-09-29 | Komin Robert Patrick Jr. | CFO | $585K | yes |
| 2026-09-29 | Mallick Dhiraj | Officer | $127K | yes |
| 2026-09-29 | Mallick Dhiraj | Officer | $3.88M | yes |
| 2026-09-29 | Mallick Dhiraj | Officer | $8.75M | yes |
| 2026-09-29 | Mallick Dhiraj | Officer | $9.76M | yes |
| 2026-09-29 | Mallick Dhiraj | Officer | $8.64M | yes |
| 2026-09-29 | Mallick Dhiraj | Officer | $4.32M | yes |
| 2026-09-29 | Mallick Dhiraj | Officer | $2.00M | yes |
| 2026-09-29 | Mallick Dhiraj | Officer | $1.86M | yes |
| 2026-09-29 | Mallick Dhiraj | Officer | $1.79M | yes |
| 2026-09-29 | Mallick Dhiraj | Officer | $5.61M | yes |
| 2026-09-29 | Mallick Dhiraj | Officer | $1.97M | yes |
| 2026-09-29 | Mallick Dhiraj | Officer | $1.14M | yes |
| 2026-09-29 | Mallick Dhiraj | Officer | $4.60M | yes |
| 2026-09-29 | Mallick Dhiraj | Officer | $3.57M | yes |
| 2026-09-29 | Mallick Dhiraj | Officer | $3.38M | yes |
| 2026-09-29 | Mallick Dhiraj | Officer | $1.02M | yes |
| 2026-09-29 | Mallick Dhiraj | Officer | $1.30M | yes |
| 2026-09-29 | Mallick Dhiraj | Officer | $3.66M | yes |
| 2026-09-29 | Mallick Dhiraj | Officer | $13.42M | yes |
| 2026-09-28 | Patel Yagnesh | Officer | $270K | yes |
| 2026-09-25 | Lie Sean | Officer | $106K | yes |
| 2026-09-25 | Lie Sean | Officer | $1.94M | yes |
| 2026-09-25 | Lie Sean | Officer | $6.43M | yes |
| 2026-09-25 | Lie Sean | Officer | $6.28M | yes |
| 2026-09-25 | Lie Sean | Officer | $4.38M | yes |
| 2026-09-25 | Lie Sean | Officer | $1.43M | yes |
| 2026-09-25 | Lie Sean | Officer | $2.85M | yes |
| 2026-09-25 | Lie Sean | Officer | $1.21M | yes |
| 2026-09-25 | Lie Sean | Officer | $450K | yes |
Activist and 5% holders
| Filed | What | Holder | Stake | Change | Filing |
|---|---|---|---|---|---|
| 2026-08-18 | Fell below 5% | Eclipse Continuity GP I, LLC | 4.30% | SEC | |
| 2026-08-14 | New 13G stake | Altimeter Capital Management, LP | 6.20% | SEC | |
| 2026-08-14 | New 13G stake | COATUE MANAGEMENT LLC | 7.10% | SEC | |
| 2026-08-14 | New 13G stake | Andrew Feldman | 9.20% | SEC | |
| 2026-08-14 | New 13G stake | Benchmark Capital Partners VIII, L.P. | 9.80% | SEC | |
| 2026-08-14 | New 13G stake | Atreides Management, LP | 10.70% | SEC | |
| 2026-08-14 | New 13G stake | Foundation Capital Management Co. VIII, L.L.C. | 12.20% | SEC | |
| 2026-08-13 | New 13G stake | JANE STREET GROUP, LLC | 5.10% | SEC |
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