Stock Trading Canary

United States · SEC Form 4 · Snapshot date: 2026-10-18 · Built: 2026-10-18 · 中文

← United States · Coverage record

US · SEC FORM 4

Rubrik, Inc.

RBRK · NYSE · CIK 0001943896 · Technology · Software—Infrastructure

INSIDER SIGNAL

No active buy signal

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

216 Form 4 transaction lines observed in the same window
141 sales · 75 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.

Insider activity timeline

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

AprMayJunJulAugSepOct
Nithrakashyap ArvindChief Technology Officer
○▼○▼▼○▼○▼○▼○▼○▼○▼○○▼○▼○▼
THOMPSON JOHN WENDELLDirector
○▼○▼○▼○▼
Choudary Kiran KumarChief Financial Officer
▼○▼○○▼▼
Wassenaar YvonneDirector
▼▼○▼▼
Sinha BipulChairman of the Board and CEO
○○
Russak-Aminoach RakefetDirector
○
● Purchase▼ Sale○ Other

—

Purchase breadth, concentration & cluster buying

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

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
212Sales
125Other Form 4 lines
67SEC filings · 365 days
BUYING0 qualifying P line(s) · 180 days
SELLING141 sale line(s) · context only
OTHER75 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
13,099,712
Previous report
13,722,476
Avg daily volume
3,107,937
Days to cover
4.2

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

337 transaction lines in the latest 365-day window; 906 in local history.

DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-10-07Nithrakashyap ArvindSale (S)Class A Common Stock12,820USD 124.14USD 1,591,523SEC filing ↗
2026-10-07Nithrakashyap ArvindC (C)Class A Common Stock12,820USD 0.00USD 0SEC filing ↗
2026-10-06Nithrakashyap ArvindSale (S)Class A Common Stock12,820USD 126.17USD 1,617,541SEC filing ↗
Show recent Form 4 evidence (30 grouped rows)
DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-10-07Nithrakashyap ArvindSale (S)Class A Common Stock12,820USD 124.14USD 1,591,523SEC filing ↗
2026-10-07Nithrakashyap ArvindC (C)Class A Common Stock12,820USD 0.00USD 0SEC filing ↗
2026-10-06Nithrakashyap ArvindSale (S)Class A Common Stock12,820USD 126.17USD 1,617,541SEC filing ↗
2026-10-06Nithrakashyap ArvindC (C)Class A Common Stock12,820USD 0.00USD 0SEC filing ↗
2026-10-05Nithrakashyap ArvindSale (S)Class A Common Stock12,820USD 122.64USD 1,572,251SEC filing ↗
2026-10-05Nithrakashyap ArvindC (C)Class A Common Stock2,501USD 0.00USD 0SEC filing ↗
2026-10-05Wassenaar YvonneSale (S)Class A Common Stock721USD 119.00USD 85,799SEC filing ↗
2026-10-01THOMPSON JOHN WENDELLSale (S)Class A Common Stock13,500USD 115.69USD 1,561,823SEC filing ↗
2026-10-01THOMPSON JOHN WENDELLC (C)Class A Common Stock11,000USD 0.00USD 0SEC filing ↗
2026-09-25Sinha BipulGift (G)Class A Common Stock55,000USD 0.00USD 0SEC filing ↗
2026-09-24Sinha BipulC (C)Class A Common Stock555,000USD —USD —SEC filing ↗
2026-09-17Choudary Kiran KumarSale (S)Class A Common Stock6,000USD 107.32USD 643,922SEC filing ↗
2026-09-15Nithrakashyap ArvindTax withholding (F)Class A Common Stock10,436USD 100.20USD 1,045,687SEC filing ↗
2026-09-15Choudary Kiran KumarSale (S)Class A Common Stock4,000USD 101.05USD 404,186SEC filing ↗
2026-09-15Choudary Kiran KumarTax withholding (F)Class A Common Stock13,995USD 100.20USD 1,402,299SEC filing ↗
2026-09-15Choudary Kiran KumarC (C)Class A Common Stock4,000USD 0.00USD 0SEC filing ↗
2026-09-10Nithrakashyap ArvindSale (S)Class A Common Stock12,820USD 90.41USD 1,159,040SEC filing ↗
2026-09-10Nithrakashyap ArvindC (C)Class A Common Stock12,820USD 0.00USD 0SEC filing ↗
2026-09-09Nithrakashyap ArvindSale (S)Class A Common Stock12,820USD 90.46USD 1,159,747SEC filing ↗
2026-09-09Nithrakashyap ArvindC (C)Class A Common Stock12,820USD 0.00USD 0SEC filing ↗
2026-09-08Nithrakashyap ArvindSale (S)Class A Common Stock12,820USD 91.33USD 1,170,832SEC filing ↗
2026-09-08Nithrakashyap ArvindC (C)Class A Common Stock12,820USD 0.00USD 0SEC filing ↗
2026-09-03Wassenaar YvonneSale (S)Class A Common Stock721USD 89.52USD 64,544SEC filing ↗
2026-09-03Wassenaar YvonneC (C)Class A Common Stock513USD 0.00USD 0SEC filing ↗
2026-09-01THOMPSON JOHN WENDELLSale (S)Class A Common Stock13,500USD 89.03USD 1,201,946SEC filing ↗
2026-09-01THOMPSON JOHN WENDELLC (C)Class A Common Stock11,000USD 0.00USD 0SEC filing ↗
2026-08-26Russak-Aminoach RakefetAward / grant (A)Class A Common Stock10,304USD 0.00USD 0SEC filing ↗
2026-08-24Choudary Kiran KumarSale (S)Class A Common Stock10,000USD 98.32USD 983,188SEC filing ↗
2026-08-24Choudary Kiran KumarC (C)Class A Common Stock4,000USD 0.00USD 0SEC filing ↗
2026-08-05Nithrakashyap ArvindSale (S)Class A Common Stock12,820USD 83.71USD 1,073,131SEC 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 date2026-10-18
Ranking versionUS-v1.2
Data qualityPASS ELIGIBLE · —
TickerRBRK
CIK0001943896
SectorTechnology
IndustrySoftware—Infrastructure Yahoo Finance
SEC SIC7372 Services-Prepackaged Software
ExchangeNYSE

Data coverage

Local Form 4 history906 transaction lines from 2024-09-11 to 2026-10-07
0 P purchase lines · 490 S sale lines · 416 other lines
SEC company submissionsOpen SEC filings ↗

Local ledger as of 2026-10-18. Mapping status is an audit field and does not erase SEC filing evidence.