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

NETSCOUT SYSTEMS INC

NTCT · Nasdaq · CIK 0001078075 · Technology · Software—Infrastructure

INSIDER SIGNAL

No active buy signal

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

54 Form 4 transaction lines observed in the same window
8 sales · 46 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 salesModerate
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
SZABADOS MICHAELDirector
▼○○○○○○▼
DOWNING JOHNEVP, World-Wide Sales
○○▼○○○○▼
Munshi SanjayChief Operating Officer
▼○○○○▼○○
SINGHAL ANIL KPresident & CEO
○○○○○○
Piazza Anthony JohnEVP & Chief Financial Officer
○○○○○○
Grasso AlfredDirector
▼○
● Purchase▼ Sale○ Other

Showing the six most active owners; 7 additional owner(s) remain in Form 4 evidence.

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
18Sales
56Other Form 4 lines
49SEC filings · 365 days
BUYING0 qualifying P line(s) · 180 days
SELLING8 sale line(s) · context only
OTHER46 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
3,346,186
Previous report
3,693,254
Avg daily volume
695,164
Days to cover
4.8

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

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

Form 4 evidence

74 transaction lines in the latest 365-day window; 357 in local history.

DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-09-11Perretta ChristopherSale (S)Common Stock7,000USD 38.00USD 266,000SEC filing ↗
2026-09-10VITALE VIVIAN MOption exercise / conversion (M)Common Stock7,000USD —USD —SEC filing ↗
2026-09-10Perretta ChristopherOption exercise / conversion (M)Common Stock7,000USD —USD —SEC filing ↗
Show recent Form 4 evidence (30 grouped rows)
DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-09-11Perretta ChristopherSale (S)Common Stock7,000USD 38.00USD 266,000SEC filing ↗
2026-09-10VITALE VIVIAN MOption exercise / conversion (M)Common Stock7,000USD —USD —SEC filing ↗
2026-09-10Perretta ChristopherOption exercise / conversion (M)Common Stock7,000USD —USD —SEC filing ↗
2026-09-10Pelage MarleneOption exercise / conversion (M)Common Stock7,000USD —USD —SEC filing ↗
2026-09-10Nash ShannonOption exercise / conversion (M)Common Stock7,000USD —USD —SEC filing ↗
2026-09-10HADZIMA JOSEPH G JROption exercise / conversion (M)Common Stock7,000USD —USD —SEC filing ↗
2026-09-10Grasso AlfredOption exercise / conversion (M)Common Stock7,000USD —USD —SEC filing ↗
2026-09-10EGAN JOHN ROption exercise / conversion (M)Common Stock7,000USD —USD —SEC filing ↗
2026-09-10DONAHUE ROBERT EOption exercise / conversion (M)Common Stock7,000USD —USD —SEC filing ↗
2026-08-25SZABADOS MICHAELSale (S)Common Stock4,000USD 37.70USD 150,800SEC filing ↗
2026-08-25Piazza Anthony JohnOption exercise / conversion (M)Common Stock2,500USD —USD —SEC filing ↗
2026-08-25Piazza Anthony JohnTax withholding (F)Common Stock737USD 37.81USD 27,866SEC filing ↗
2026-08-25Munshi SanjayOption exercise / conversion (M)Common Stock3,000USD —USD —SEC filing ↗
2026-08-25Munshi SanjayTax withholding (F)Common Stock731USD 37.81USD 27,639SEC filing ↗
2026-08-17Munshi SanjaySale (S)Common Stock2,269USD 39.27USD 89,104SEC filing ↗
2026-08-11DOWNING JOHNSale (S)Common Stock8,000USD 38.41USD 307,280SEC filing ↗
2026-06-19SZABADOS MICHAELOption exercise / conversion (M)Common Stock6,048USD —USD —SEC filing ↗
2026-06-19SZABADOS MICHAELTax withholding (F)Common Stock1,782USD 39.67USD 70,692SEC filing ↗
2026-06-19SINGHAL ANIL KOption exercise / conversion (M)Common Stock10,368USD —USD —SEC filing ↗
2026-06-19SINGHAL ANIL KTax withholding (F)Common Stock4,609USD 39.67USD 182,839SEC filing ↗
2026-06-19DOWNING JOHNOption exercise / conversion (M)Common Stock5,184USD —USD —SEC filing ↗
2026-06-19DOWNING JOHNTax withholding (F)Common Stock2,305USD 39.67USD 91,439SEC filing ↗
2026-06-15SZABADOS MICHAELOption exercise / conversion (M)Common Stock6,300USD —USD —SEC filing ↗
2026-06-15SZABADOS MICHAELTax withholding (F)Common Stock1,856USD 41.42USD 76,876SEC filing ↗
2026-06-15SINGHAL ANIL KOption exercise / conversion (M)Common Stock10,800USD —USD —SEC filing ↗
2026-06-15SINGHAL ANIL KTax withholding (F)Common Stock4,195USD 41.42USD 173,757SEC filing ↗
2026-06-15Piazza Anthony JohnOption exercise / conversion (M)Common Stock2,000USD —USD —SEC filing ↗
2026-06-15Piazza Anthony JohnTax withholding (F)Common Stock589USD 41.42USD 24,396SEC filing ↗
2026-06-15Munshi SanjayOption exercise / conversion (M)Common Stock2,400USD —USD —SEC filing ↗
2026-06-15Munshi SanjayTax withholding (F)Common Stock585USD 41.42USD 24,231SEC 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 · —
TickerNTCT
CIK0001078075
SectorTechnology
IndustrySoftware—Infrastructure Yahoo Finance
SEC SIC7373 Services-Computer Integrated Systems Design
ExchangeNasdaq

Data coverage

Local Form 4 history357 transaction lines from 2020-02-04 to 2026-09-11
0 P purchase lines · 83 S sale lines · 274 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.