Stock Trading Canary

United States · SEC Form 4 · Snapshot date: 2026-10-19 · Built: 2026-10-19 · 中文

← United States · Coverage record

US · SEC FORM 4

Cerebras Systems Inc.

CBRS · Nasdaq · CIK 0002021728 · Technology · Semiconductors

INSIDER SIGNAL

No active buy signal

0 qualifying P purchase groups
in the current 180-day scoring window

472 Form 4 transaction lines observed in the same window
333 sales · 139 option, withholding, award, gift or other lines

Last qualifying purchaseNo qualifying purchase is present in the local Form 4 history.

WHY NO ACTIVE SIGNAL?

Purchase activityNone
Recent buyingNone
Recent salesHigh
Buy signal statusInactive
Score anatomy

No score is calculated because there is no qualifying purchase in the active window. Unavailable inputs are not treated as zero or as a bearish signal.

ClusterNot calculated
Purchase sizeNot calculated
RoleNot calculated
RecencyNot calculated
ConvictionNot calculated

Why is there no score?

  • No qualifying open-market purchase supplies cluster, size, role, recency or conviction inputs.
  • Sales and other Form 4 activity remain visible as context and do not create a negative score.

Sales and other Form 4 activity are shown separately and do not create a negative buy signal. Absence of buying is not scored as bearish.

Purchase breadth, concentration & cluster buying

These modules activate when qualifying purchases enter the 180-day research window.

Insider activity timeline

Owner lanes show the latest 180 days. Symbol shape identifies the transaction type; sales remain context only.

AprMayJunJulAugSepOct
Feldman Andrew D.CEO, President
○○▼○○▼○○○
Lie SeanChief Technology Officer
○○▼○○▼
Susan LiorDirector
○○○○
Vishria EricDirector
○○○○
Vassallo StevenDirector
○○○▼
Foundation Capital Leadership Fund II, L.P.; Foundation Capital Management Co. LF II, L.L.C.; Foundation Capital Management Co. VIII, L.L.C.; Foundation Capital VIII Principals Fund, L.L.C.; Foundation Capital VIII, L.P.TenPercentOwner
○○○
● Purchase▼ Sale○ Other

Showing the six most active owners; 5 additional owner(s) remain in Form 4 evidence.

SIGNAL HISTORY

No recorded active-signal snapshot

Scores are archived only when the company qualifies for a published US buy-signal snapshot.—

Recent Form 4 activity

0Purchases
333Sales
139Other Form 4 lines
55SEC filings · 365 days
BUYING0 qualifying P line(s) · 180 days
SELLING333 sale line(s) · context only
OTHER139 exercise / withholding / award / gift / other lines
10b5-1 / PLANNEDNot assessed

P is an open-market or private purchase. S is a sale. M, F, A and G usually describe exercises, tax withholding, awards and gifts. These categories remain visually separate.

Market context

Market context has not been captured for this ticker yet. The daily market-context job processes the US universe in rotating batches.

Short interest

Short interest is external context reported to FINRA by broker-dealers. It does not affect the Insider Signal.

Shares short
14,118,546
Previous report
12,802,090
Avg daily volume
6,709,739
Days to cover
2.1

FINRA settlement date: 2026-09-30 · Captured 2026-10-12 · FINRA equity short interest ↗. A share count, published about a week after each of two settlement dates a month; not a percentage of shares outstanding.

Historical equity purchases

No qualifying code P equity purchase is present in the local Form 4 history.

Form 4 evidence

472 transaction lines in the latest 365-day window; 472 in local history.

DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-10-05Vishria EricJ (J)Class A Common Stock59,126USD 0.00USD 0SEC filing ↗
2026-10-05Feldman Andrew D.J (J)Class A Common Stock159USD 0.00USD 0SEC filing ↗
2026-09-30Susan LiorJ (J)Class A Common Stock1,329,973USD —USD —SEC filing ↗
Show recent Form 4 evidence (30 grouped rows)
DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-10-05Vishria EricJ (J)Class A Common Stock59,126USD 0.00USD 0SEC filing ↗
2026-10-05Feldman Andrew D.J (J)Class A Common Stock159USD 0.00USD 0SEC filing ↗
2026-09-30Susan LiorJ (J)Class A Common Stock1,329,973USD —USD —SEC filing ↗
2026-09-29Mallick DhirajSale (S)Class A Common Stock396,000USD 204.04USD 80,798,604SEC filing ↗
2026-09-29Mallick DhirajC (C)Class A Common Stock276,000USD 0.00USD 0SEC filing ↗
2026-09-29Komin Robert Patrick Jr.Sale (S)Class A Common Stock32,500USD 203.53USD 6,614,882SEC filing ↗
2026-09-28Patel YagneshSale (S)Class A Common Stock1,320USD 204.50USD 269,940SEC filing ↗
2026-09-25Lie SeanSale (S)Class A Common Stock120,000USD 208.97USD 25,076,264SEC filing ↗
2026-09-25Lie SeanGift (G)Class A Common Stock36,000USD 0.00USD 0SEC filing ↗
2026-09-25Lie SeanC (C)Class A Common Stock120,000USD —USD —SEC filing ↗
2026-09-23Susan LiorJ (J)Class A Common Stock500,610USD —USD —SEC filing ↗
2026-09-21Vishria EricJ (J)Class A Common Stock44,507USD 0.00USD 0SEC filing ↗
2026-09-21Feldman Andrew D.J (J)Class A Common Stock120USD 0.00USD 0SEC filing ↗
2026-09-15Susan LiorJ (J)Class A Common Stock499,312USD —USD —SEC filing ↗
2026-09-08Vishria EricJ (J)Class A Common Stock44,507USD 0.00USD 0SEC filing ↗
2026-09-08Feldman Andrew D.J (J)Class A Common Stock120USD 0.00USD 0SEC filing ↗
2026-09-04Vassallo StevenSale (S)Class A Common Stock50,000USD 210.30USD 10,515,135SEC filing ↗
2026-09-04Lie SeanSale (S)Class A Common Stock53,460USD 210.16USD 11,235,154SEC filing ↗
2026-09-04Lie SeanGift (G)Class A Common Stock16,038USD 0.00USD 0SEC filing ↗
2026-09-04Lie SeanC (C)Class A Common Stock46,141USD —USD —SEC filing ↗
2026-09-04Feldman Andrew D.Sale (S)Class A Common Stock37,441USD 210.46USD 7,879,687SEC filing ↗
2026-09-04Feldman Andrew D.C (C)Class A Common Stock37,441USD 0.00USD 0SEC filing ↗
2026-09-02Susan LiorJ (J)Class A Common Stock996,161USD —USD —SEC filing ↗
2026-08-24Vishria EricJ (J)Class A Common Stock44,507USD 0.00USD 0SEC filing ↗
2026-08-24Benchmark Capital Management Co. IX, L.L.C.; Benchmark Capital Management Co. VIII, L.L.C.; Benchmark Capital Partners IX, L.P.; Benchmark Capital Partners VIII, L.P.; Benchmark Founders' Fund IX, L.P.; Benchmark Founders' Fund IX-A, L.P.; Benchmark Founders' Fund IX-B, L.P.; Benchmark Founders' Fund VIII, L.P.; Benchmark Founders' Fund VIII-B, L.P.J (J)Class A Common Stock963,818USD 0.00USD 0SEC filing ↗
2026-08-24Benchmark Capital Management Co. IX, L.L.C.; Benchmark Capital Management Co. VIII, L.L.C.; Benchmark Capital Partners IX, L.P.; Benchmark Capital Partners VIII, L.P.; Benchmark Founders' Fund IX, L.P.; Benchmark Founders' Fund IX-A, L.P.; Benchmark Founders' Fund IX-B, L.P.; Benchmark Founders' Fund VIII, L.P.; Benchmark Founders' Fund VIII-B, L.P.C (C)Class A Common Stock963,818USD 0.00USD 0SEC filing ↗
2026-08-24Feldman Andrew D.J (J)Class A Common Stock120USD 0.00USD 0SEC filing ↗
2026-08-21Vassallo StevenJ (J)Class A Common Stock1,631,990USD 0.00USD 0SEC filing ↗
2026-08-21Vassallo StevenC (C)Class A Common Stock1,224,187USD —USD —SEC filing ↗
2026-08-21Foundation Capital Leadership Fund II, L.P.; Foundation Capital Management Co. LF II, L.L.C.; Foundation Capital Management Co. VIII, L.L.C.; Foundation Capital VIII Principals Fund, L.L.C.; Foundation Capital VIII, L.P.J (J)Class A Common Stock1,530,274USD 0.00USD 0SEC filing ↗

Multiple price lines in one filing are grouped and share-weighted. Price and value are blank when a grouped filing line lacks price evidence.

Snapshot & identity

Snapshot date2026-10-19
Ranking versionUS-v1.2
Data qualityPASS ELIGIBLE · —
TickerCBRS
CIK0002021728
SectorTechnology
IndustrySemiconductors Yahoo Finance
SEC SIC3674 Semiconductors & Related Devices
ExchangeNasdaq

Data coverage

Local Form 4 history472 transaction lines from 2026-05-13 to 2026-10-05
0 P purchase lines · 333 S sale lines · 139 other lines
SEC company submissionsOpen SEC filings ↗

Local ledger as of 2026-10-19. Mapping status is an audit field and does not erase SEC filing evidence.