LYTIR

Company · CBRS

Cerebras Systems Inc.

Nasdaq's symbol directory lists CBRS on Nasdaq as “Cerebras Systems Inc. - Class A Common Stock”.

In the 12 months to Nov 8, 2026: insiders sold on 21 occasions ($385.7M); 4 planned-sale notices; 11 filings by holders of 5% or more.

All insider filings at the SEC · Appeared in No. 36, No. 35, No. 18, No. 15, No. 14, No. 13, No. 12, No. 11

Insider purchases and sales, by month (last 12 months)Insider purchases: $0 in total; Insider sales: $385.7M in total.Jun: Insider sales $20.7MAug: Insider sales $245.3MSep: Insider sales $112.8MOct: Insider sales $6.9MDecJanFebMarAprMayJunJulAugSepOctNov
Insider purchases above the line: $0Insider sales below: $385.7M
Dollar value of open-market purchases and sales reported on SEC Form 4, by the month traded. Sales include pre-arranged 10b5-1 plan sales.

Insider trades · SEC Form 4

Those inside the hall

Open-market purchases and sales only. Legs one person filed for one day are combined.

Who traded

  1. Lie Sean, Chief Technology Officer sold on 6 days 4 of them under a 10b5-1 plan latest Oct 27, 2026 sold $189.5M
  2. Mallick Dhiraj, Chief Operating Officer sold on 5 days 1 of them under a 10b5-1 plan latest Sep 29, 2026 sold $103.6M
  3. Feldman Andrew D., CEO, President sold on 3 days 1 of them under a 10b5-1 plan latest Aug 21, 2026 sold $56.4M
  4. Eric Vishria sold on 1 day all under a 10b5-1 plan latest Aug 17, 2026 sold $15.7M
  5. Steven Vassallo sold on 1 day latest Aug 14, 2026 sold $10.9M
  6. Komin Robert Patrick Jr., Chief Financial Officer sold on 1 day all under a 10b5-1 plan latest Sep 29, 2026 sold $6.6M
  7. Patel Yagnesh, Chief Accounting Officer sold on 4 days 1 of them under a 10b5-1 plan latest Sep 28, 2026 sold $3.0M
Every trade (21)
  1. SELLLie Sean, Chief Technology Officer sold Oct 27, 2026 60,000 shares 3 legs combined 10b5-1 plan (scheduled) filing $6.9M
  2. SELLMallick Dhiraj, Chief Operating Officer sold Sep 29, 2026 396,000 shares 19 legs combined 10b5-1 plan (scheduled) filing $80.8M
  3. SELLKomin Robert Patrick Jr., Chief Financial Officer sold Sep 29, 2026 32,500 shares 16 legs combined 10b5-1 plan (scheduled) filing $6.6M
  4. SELLPatel Yagnesh, Chief Accounting Officer sold Sep 28, 2026 1,320 shares 10b5-1 plan (scheduled) filing $270K
  5. SELLLie Sean, Chief Technology Officer sold Sep 25, 2026 120,000 shares 9 legs combined 10b5-1 plan (scheduled) filing $25.1M
  6. SELLFeldman Andrew D., CEO, President sold Aug 21, 2026 237,559 shares 13 legs combined 10b5-1 plan (scheduled) filing $47.3M
  7. SELLLie Sean, Chief Technology Officer sold Aug 21, 2026 16,293 shares 10b5-1 plan (scheduled) filing $3.4M
  8. SELLLie Sean, Chief Technology Officer sold Aug 20, 2026 710,247 shares 10 legs combined 10b5-1 plan (scheduled) filing $147.6M
  9. SELLMallick Dhiraj, Chief Operating Officer sold Aug 18, 2026 38,889 shares 26 legs combined filing $8.6M
  10. SELLFeldman Andrew D., CEO, President sold Aug 18, 2026 26,644 shares 26 legs combined filing $5.9M
  11. SELLLie Sean, Chief Technology Officer sold Aug 18, 2026 21,257 shares 26 legs combined filing $4.7M
  12. SELLPatel Yagnesh, Chief Accounting Officer sold Aug 18, 2026 4,574 shares 25 legs combined filing $1.0M
  13. SELLEric Vishria sold Aug 17, 2026 68,268 shares 6 legs combined 10b5-1 plan (scheduled) filing $15.7M
  14. SELLSteven Vassallo sold Aug 14, 2026 50,000 shares 5 legs combined filing $10.9M
  15. SELLMallick Dhiraj, Chief Operating Officer sold Jun 30, 2026 10,000 shares filing $2.1M
  16. SELLMallick Dhiraj, Chief Operating Officer sold Jun 26, 2026 20,000 shares 18 legs combined filing $3.5M
  17. SELLPatel Yagnesh, Chief Accounting Officer sold Jun 26, 2026 3,954 shares 14 legs combined filing $688K
  18. SELLMallick Dhiraj, Chief Operating Officer sold Jun 25, 2026 49,445 shares 39 legs combined filing $8.6M
  19. SELLFeldman Andrew D., CEO, President sold Jun 25, 2026 17,990 shares 12 legs combined filing $3.1M
  20. SELLLie Sean, Chief Technology Officer sold Jun 25, 2026 10,033 shares 16 legs combined filing $1.7M
  21. SELLPatel Yagnesh, Chief Accounting Officer sold Jun 25, 2026 6,125 shares 30 legs combined filing $1.1M

Planned sales · SEC Form 144

Notice given

A Form 144 is filed before an insider sells restricted stock. It states an intent; the sale, if it happens, appears later on a Form 4. Every recent notice

  1. SEAN LIE filed Oct 27, 2026 Officer 60,000 shares planned sale date 10/27/2026 filing $6.5M
  2. DHIRAJ MALLICK filed Sep 29, 2026 Officer 396,000 shares planned sale date 09/29/2026 filing $77.9M
  3. ROBERT KOMIN filed Sep 29, 2026 Officer 32,500 shares planned sale date 09/29/2026 filing $6.4M
  4. SEAN LIE filed Sep 25, 2026 Officer 120,000 shares planned sale date 09/25/2026 filing $24.8M

Large holders · SEC Schedules 13D and 13G

Five percent and over

Anyone who comes to hold more than 5% of a company's voting shares must tell the SEC. A Schedule 13D is filed by a holder who may seek to influence the company; a 13G by one who states it is a passive investor. An amendment updates an earlier filing, and a stake reported as 0% means the holder says it has sold all, or nearly all, of its shares. Every recent 13D and 13G

  1. JANE STREET GROUP, LLC filed Nov 6, 2026 Schedule 13G/A passive 2,797,771 shares filing 2.5%
  2. FMR LLC filed Nov 5, 2026 Schedule 13G/A passive filing 17.8%
  3. Eclipse Continuity GP I, LLC filed Aug 18, 2026 Schedule 13D/A may seek influence 546,645 shares filing 0.2%
  4. Foundation Capital Management Co. VIII, L.L.C. filed Aug 14, 2026 Schedule 13G passive filing 12.2%
  5. Atreides Management, LP filed Aug 14, 2026 Schedule 13G passive filing 10.7%
  6. Benchmark Capital Partners VIII, L.P. filed Aug 14, 2026 Schedule 13G passive filing 9.8%
  7. Andrew Feldman filed Aug 14, 2026 Schedule 13G passive filing 9.2%
  8. COATUE MANAGEMENT LLC filed Aug 14, 2026 Schedule 13G passive filing 7.1%
  9. Altimeter Capital Management, LP filed Aug 14, 2026 Schedule 13G passive filing 6.2%
  10. JANE STREET GROUP, LLC filed Aug 13, 2026 Schedule 13G passive 5,222,522 shares filing 5.1%
  11. Eclipse Continuity GP I, LLC filed Jun 26, 2026 Schedule 13D/A may seek influence 680,305 shares filing 0.3%

Sources: SEC EDGAR (Forms 4 and 144) and STOCK Act periodic transaction reports. Filings can be late, amended or wrong at the source; see methodology.