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

Zscaler, Inc.

ZS · Nasdaq · CIK 0001713683 · Technology · Software—Infrastructure

INSIDER SIGNAL

No active buy signal

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

51 Form 4 transaction lines observed in the same window
47 sales · 4 option, withholding, award, gift or other lines

Last qualifying purchase2022-12-23 · Brown Andrew William Fraser · $543.9K

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
Geller AdamChief Product Officer
▼▼○▼▼▼○▼○▼
RUBIN KEVINChief Financial Officer
▼▼▼▼○▼▼
Schlossman RobertChief Legal Officer
▼▼▼▼
BEER JAMES ADirector
▼▼
Chaudhry Jagtar SinghCEO & Chairman
▼▼
Rich Michael J.CRO and President of WW Sales
▼▼
● 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. Last qualifying purchase: 2022-12-23 · Brown Andrew William Fraser.

Recent Form 4 activity

0Purchases
66Sales
11Other Form 4 lines
44SEC filings · 365 days
BUYING0 qualifying P line(s) · 180 days
SELLING47 sale line(s) · context only
OTHER4 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
5,802,363
Previous report
6,501,392
Avg daily volume
3,224,721
Days to cover
1.8

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

Qualifying code P transactions in the local Form 4 history, including purchases outside the current signal window.

Transaction dateReporting ownerTypeSecuritySharesAvg. priceApprox. valueSource
2022-12-23Brown Andrew William FraserPurchase (P)Common Stock5,000USD 108.78USD 543,900SEC filing ↗

Form 4 evidence

77 transaction lines in the latest 365-day window; 1,273 in local history.

DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-10-12Geller AdamSale (S)Common Stock1,042USD 235.95USD 245,860SEC filing ↗
2026-10-12Geller AdamOption exercise / conversion (M)Common Stock1,042USD 205.61USD 214,246SEC filing ↗
2026-10-09Geller AdamSale (S)Common Stock23,958USD 225.43USD 5,400,966SEC filing ↗
Show recent Form 4 evidence (30 grouped rows)
DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-10-12Geller AdamSale (S)Common Stock1,042USD 235.95USD 245,860SEC filing ↗
2026-10-12Geller AdamOption exercise / conversion (M)Common Stock1,042USD 205.61USD 214,246SEC filing ↗
2026-10-09Geller AdamSale (S)Common Stock23,958USD 225.43USD 5,400,966SEC filing ↗
2026-10-09Geller AdamOption exercise / conversion (M)Common Stock23,958USD 205.61USD 4,926,004SEC filing ↗
2026-09-25RUBIN KEVINSale (S)Common Stock519USD 197.28USD 102,390SEC filing ↗
2026-09-21Schlossman RobertSale (S)Common Stock5,394USD 200.00USD 1,078,800SEC filing ↗
2026-09-21Geller AdamSale (S)Common Stock661USD 200.00USD 132,200SEC filing ↗
2026-09-17Geller AdamSale (S)Common Stock4,584USD 192.01USD 880,174SEC filing ↗
2026-09-17BEER JAMES ASale (S)Commom Stock177USD 192.01USD 33,986SEC filing ↗
2026-09-16Schlossman RobertSale (S)Common Stock2,325USD 192.76USD 448,167SEC filing ↗
2026-09-16Rich Michael J.Sale (S)Commom Stock4,108USD 192.76USD 791,858SEC filing ↗
2026-09-16RUBIN KEVINSale (S)Common Stock5,957USD 192.76USD 1,148,271SEC filing ↗
2026-09-16Geller AdamSale (S)Common Stock5,578USD 192.76USD 1,075,215SEC filing ↗
2026-09-16Chaudhry Jagtar SinghSale (S)Common Stock2,852USD 192.76USD 549,752SEC filing ↗
2026-09-15RUBIN KEVINAward / grant (A)Common Stock8,349USD 0.00USD 0SEC filing ↗
2026-09-15Geller AdamAward / grant (A)Common Stock6,817USD 0.00USD 0SEC filing ↗
2026-08-25RUBIN KEVINSale (S)Common Stock503USD 173.38USD 87,209SEC filing ↗
2026-07-27RUBIN KEVINSale (S)Common Stock503USD 147.12USD 74,002SEC filing ↗
2026-07-06Schlossman RobertSale (S)Common Stock122USD 150.00USD 18,300SEC filing ↗
2026-06-25RUBIN KEVINSale (S)Common Stock3,000USD 124.23USD 372,675SEC filing ↗
2026-06-22Geller AdamSale (S)Common Stock2,817USD 122.60USD 345,364SEC filing ↗
2026-06-17BEER JAMES ASale (S)Commom Stock177USD 125.50USD 22,214SEC filing ↗
2026-06-16Schlossman RobertSale (S)Common Stock3,146USD 126.43USD 397,749SEC filing ↗
2026-06-16Rich Michael J.Sale (S)Commom Stock4,184USD 126.43USD 528,983SEC filing ↗
2026-06-16RUBIN KEVINSale (S)Common Stock1,686USD 126.43USD 213,161SEC filing ↗
2026-06-16Geller AdamSale (S)Commom Stock1,940USD 126.43USD 245,274SEC filing ↗
2026-06-16Chaudhry Jagtar SinghSale (S)Common Stock2,878USD 126.43USD 363,866SEC filing ↗
2026-03-18Geller AdamSale (S)Commom Stock2,094USD 153.53USD 321,492SEC filing ↗
2026-03-18BEER JAMES ASale (S)Commom Stock177USD 153.53USD 27,175SEC filing ↗
2026-03-17Geller AdamSale (S)Commom Stock1,485USD 156.59USD 232,536SEC 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 · —
TickerZS
CIK0001713683
SectorTechnology
IndustrySoftware—Infrastructure Yahoo Finance
SEC SIC7371 Services-Computer Programming Services
ExchangeNasdaq

Data coverage

Local Form 4 history1,273 transaction lines from 2020-01-02 to 2026-10-12
1 P purchase lines · 1,030 S sale lines · 242 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.