Cerebras Systems Inc.
CBRS- Exchange
- Nasdaq
- Industry
- Semiconductors & Related Devices
- SEC CIK
- 0002021728
In the last 90 days, Cerebras Systems Inc. insiders filed 0 open-market purchases and 16 sales; 421 institutions reported holding it in 13F filings for Q2 2026, worth $19.6B in total; 6 superinvestors hold it, including Altimeter Capital and Coatue Management.
Open-market trades, last 90 days
Open-market purchases (P) and sales (S) by Cerebras Systems Inc. insiders, counted by Form 4 filing. Trades with a flagged price and duplicate filings are left out.
- Open-market buys
- 0 filings
- Open-market sells
- 16 filings
- 7 insiders, $394.6M in total
- Insiders trading
- 7
- Net value
- −$394.6M
- Purchases minus sales
Insider roster
Directors, officers and 10% owners who have filed a Form 4 for Cerebras Systems Inc., current and former, most recent filer first. Last reported holding is the position after the last non-derivative trade in their latest filing.
| Name | Title | Last reported holding | Last filing | Filings, past year |
|---|---|---|---|---|
| Lie Sean | Chief Technology Officer | 263,592 | Oct 28, 2026 | 7 |
| Vishria Eric | Director | 334,980Indirect | Oct 7, 2026 | 6 |
| Feldman Andrew D. | CEO, President | 1,085Indirect | Oct 6, 2026 | 8 |
| Susan Lior | Director | 372,659Indirect | Oct 2, 2026 | 9 |
| Komin Robert Patrick Jr. | Chief Financial Officer | 0 | Sep 30, 2026 | 3 |
| Mallick Dhiraj | Chief Operating Officer | 0 | Sep 30, 2026 | 6 |
| Patel Yagnesh | Chief Accounting Officer | 15,356 | Sep 30, 2026 | 5 |
| Vassallo Steven | Director | 171,977Indirect | Sep 8, 2026 | 5 |
| Benchmark AI Infrastructure Fund B, L.P. | 10% Owner | – | Aug 26, 2026 | 3 |
| Benchmark AI Infrastructure Fund, L.P. | 10% Owner | – | Aug 26, 2026 | 3 |
| Benchmark AI Infrastructure Management Co., L.L.C. | 10% Owner | – | Aug 26, 2026 | 3 |
| Benchmark Capital Management Co. VIII, L.L.C. | 10% Owner | 0Indirect | Aug 26, 2026 | 4 |
| Benchmark Capital Partners VIII, L.P. | 10% Owner | 0Indirect | Aug 26, 2026 | 4 |
| Benchmark Founders' Fund VIII-B, L.P. | 10% Owner | 0Indirect | Aug 26, 2026 | 4 |
| Benchmark Founders' Fund VIII, L.P. | 10% Owner | 0Indirect | Aug 26, 2026 | 4 |
| Benchmark Founders' Fund IX-B, L.P. | 10% Owner | 0Indirect | Aug 26, 2026 | 3 |
| Benchmark Founders' Fund IX, L.P. | 10% Owner | 0Indirect | Aug 26, 2026 | 3 |
| Benchmark Capital Management Co. IX, L.L.C. | 10% Owner | 0Indirect | Aug 26, 2026 | 3 |
| Benchmark Capital Partners IX, L.P. | 10% Owner | 0Indirect | Aug 26, 2026 | 3 |
| Benchmark Founders' Fund IX-A, L.P. | 10% Owner | 0Indirect | Aug 26, 2026 | 3 |
| Foundation Capital Management Co. VIII, L.L.C. | 10% Owner | 0Indirect | Aug 25, 2026 | 4 |
| Foundation Capital VIII, L.P. | 10% Owner | 0Indirect | Aug 25, 2026 | 4 |
| Foundation Capital VIII Principals Fund, L.L.C. | 10% Owner | 0Indirect | Aug 25, 2026 | 4 |
| Foundation Capital Management Co. LF II, L.L.C. | 10% Owner | 0Indirect | Aug 25, 2026 | 4 |
| Foundation Capital Leadership Fund II, L.P. | 10% Owner | 0Indirect | Aug 25, 2026 | 4 |
| Donio Elena A. | Director | 0 | May 15, 2026 | 1 |
| Auvil Paul R. III | Director | 0 | May 15, 2026 | 1 |
Insider trades
Each row adds up one type of transaction in one Form 4 filing. Only open-market purchases (P) and sales (S) are shown by default; use the filters to see grants, option exercises and other codes.
| Filed (ET) | Trade date | Filing delay | Insider | Transaction | Shares | Avg price | Value | Holding change | Flags |
|---|---|---|---|---|---|---|---|---|---|
| Oct 28, 2026 (view filing)6:30 PM ET | Oct 27 | 1 day | Lie SeanChief Technology Officer | SSaleClass A Common Stock | −60.0K | $115.79 | −$6.95M | −18.5%263.6K after | 3 lots10b5-1 |
| Sep 30, 2026 (view filing)6:35 PM ET | Sep 29 | 1 day | Komin Robert Patrick Jr.Chief Financial Officer | SSaleClass A Common Stock | −32.5K | $203.53 | −$6.61M | −100.0%0 after | 16 lots10b5-1 |
| Sep 30, 2026 (view filing)6:34 PM ET | Sep 29 | 1 day | Mallick DhirajChief Operating Officer | SSaleClass A Common Stock | −396.0K | $204.04 | −$80.8M | −100.0%0 after | 19 lots10b5-1 |
| Sep 30, 2026 (view filing)6:33 PM ET | Sep 28 | 2 days | Patel YagneshChief Accounting Officer | SSaleClass A Common Stock | −1.32K | $204.50 | −$269.9K | −7.9%15.4K after | 10b5-1 |
| Sep 28, 2026 (view filing)4:05 PM ET | Sep 25 | 3 days | Lie SeanChief Technology Officer | SSaleClass A Common Stock | −120.0K | $208.97 | −$25.1M | −27.9%309.6K after | 9 lots10b5-1 |
| Sep 8, 2026 (view filing)8:20 PM ET | Sep 4 | 4 days | Vassallo StevenDirector | SSaleClass A Common Stock | −50.0K | $210.30 | −$10.5M | −22.5%172.0K after | 3 lots |
| Sep 8, 2026 (view filing)8:19 PM ET | Sep 4 | 4 days | Lie SeanChief Technology Officer | SSaleClass A Common Stock | −53.5K | $210.16 | −$11.2M | −13.4%345.6K after | |
| Sep 8, 2026 (view filing)8:17 PM ET | Sep 4 | 4 days | Feldman Andrew D.CEO, President | SSaleClass A Common Stock | −37.4K | $210.46 | −$7.88M | −69.0%16.9K after | 16 lots |
| Aug 25, 2026 (view filing)6:13 PM ET | Aug 21 | 4 days | Feldman Andrew D.CEO, President | SSaleClass A Common Stock | −237.6K | $199.27 | −$47.3M | −93.4%16.9K after | 13 lots |
| Aug 21, 2026 (view filing)8:58 PM ET | Aug 20-21 | 1 day | Lie SeanChief Technology Officer | SSaleClass A Common Stock | −726.5K | $207.90 | −$151.1M | −66.3%368.9K after | 11 lots |
| Aug 20, 2026 (view filing)8:10 PM ET | Aug 18 | 2 days | Patel YagneshChief Accounting Officer | SSaleClass A Common Stock | −4.57K | $222.22 | −$1.02M | −21.5%16.7K after | 25 lots |
| Aug 20, 2026 (view filing)8:05 PM ET | Aug 18 | 2 days | Mallick DhirajChief Operating Officer | SSaleClass A Common Stock | −38.9K | $222.22 | −$8.64M | −24.5%120.0K after | 26 lots |
| Aug 20, 2026 (view filing)8:04 PM ET | Aug 18 | 2 days | Lie SeanChief Technology Officer | SSaleClass A Common Stock | −21.3K | $222.22 | −$4.72M | −3.4%595.4K after | 26 lots |
| Aug 19, 2026 (view filing)9:12 PM ET | Aug 18 | 1 day | Feldman Andrew D.CEO, President | SSaleClass A Common Stock | −26.6K | $222.22 | −$5.92M | −28.5%66.9K after | 26 lots |
| Aug 19, 2026 (view filing)5:41 PM ET | Aug 17 | 2 days | Vishria EricDirector | SSaleClass A Common Stock | −68.3K | $229.77 | −$15.7M | −68.5%31.4K after | 6 lots10b5-1 |
| Aug 18, 2026 (view filing)6:38 PM ET | Aug 14 | 4 days | Vassallo StevenDirector | SSaleClass A Common Stock | −50.0K | $218.18 | −$10.9M | −50.2%49.6K after | 5 lots |
| Jul 1, 2026 (view filing)4:21 PM ET | Jun 30 | 1 day | Mallick DhirajChief Operating Officer | SSaleClass A Common Stock | −10.0K | $206.51 | −$2.07M | −100.0%0 after | |
| Jun 29, 2026 (view filing) | Jun 25-26 | 4 days | Mallick DhirajChief Operating Officer | SSaleClass A Common Stock | −33.3K | $178.19 | −$5.94M | −100.0%0 after | 28 lots |
| Jun 29, 2026 (view filing) | Jun 25 | 4 days | Mallick DhirajChief Operating Officer | SSaleClass A Common Stock | −36.1K | $169.28 | −$6.12M | −52.0%33.3K after | 29 lots |
| Jun 29, 2026 (view filing) | Jun 25-26 | 4 days | Patel YagneshChief Accounting Officer | SSaleClass A Common Stock | −4.00K | $174.20 | −$696.8K | −100.0%0 after | 15 lots |
| Jun 29, 2026 (view filing) | Jun 25 | 4 days | Patel YagneshChief Accounting Officer | SSaleClass A Common Stock | −6.08K | $171.53 | −$1.04M | −60.3%4.00K after | 29 lots |
| Jun 29, 2026 (view filing) | Jun 25 | 4 days | Feldman Andrew D.CEO, President | SSaleClass A Common Stock | −18.0K | $173.06 | −$3.11M | −100.0%0 after | 12 lots |
| Jun 29, 2026 (view filing) | Jun 25 | 4 days | Lie SeanChief Technology Officer | SSaleClass A Common Stock | −10.0K | $170.07 | −$1.71M | −100.0%0 after | 16 lots |