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

QUALYS, INC.

QLYS · Nasdaq · CIK 0001107843 · Technology · Software—Infrastructure

INSIDER SIGNAL

No active buy signal

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

103 Form 4 transaction lines observed in the same window
91 sales · 12 option, withholding, award, gift or other lines

Last qualifying purchase2024-08-13 · Zangardi John A. · $628

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
Thakar Sumedh SCEO & PRESIDENT
▼▼▼▼▼○▼▼▼
POSEY BRUCE KCHIEF LEGAL OFFICER
▼▼▼○▼▼
Kim Joo MiCHIEF FINANCIAL OFFICER
▼○▼▼
Pfeiffer WendyDirector
○▼▼▼
Berquist ThomasDirector
○▼▼
Hank Jeffrey PDirector
○▼▼
● Purchase▼ Sale○ Other

Showing the six most active owners; 3 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. Last qualifying purchase: 2024-08-13 · Zangardi John A..

Recent Form 4 activity

0Purchases
152Sales
48Other Form 4 lines
68SEC filings · 365 days
BUYING0 qualifying P line(s) · 180 days
SELLING91 sale line(s) · context only
OTHER12 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
3,284,204
Previous report
3,465,960
Avg daily volume
673,119
Days to cover
4.9

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
2024-08-13Zangardi John A.Purchase (P)Common Stock5USD 125.58USD 628SEC filing ↗

Form 4 evidence

200 transaction lines in the latest 365-day window; 1,333 in local history.

DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-10-14Thakar Sumedh SSale (S)Common Stock3,200USD 190.36USD 609,148SEC filing ↗
2026-09-21POSEY BRUCE KSale (S)Common Stock866USD 179.49USD 155,442SEC filing ↗
2026-09-14Thakar Sumedh SSale (S)Common Stock3,200USD 170.05USD 544,147SEC filing ↗
Show recent Form 4 evidence (30 grouped rows)
DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-10-14Thakar Sumedh SSale (S)Common Stock3,200USD 190.36USD 609,148SEC filing ↗
2026-09-21POSEY BRUCE KSale (S)Common Stock866USD 179.49USD 155,442SEC filing ↗
2026-09-14Thakar Sumedh SSale (S)Common Stock3,200USD 170.05USD 544,147SEC filing ↗
2026-09-02Kim Joo MiSale (S)Common Stock1,030USD 169.62USD 174,711SEC filing ↗
2026-09-02Berquist ThomasSale (S)Common Stock511USD 175.27USD 89,563SEC filing ↗
2026-08-20Pfeiffer WendySale (S)Common Stock500USD 185.00USD 92,500SEC filing ↗
2026-08-20POSEY BRUCE KSale (S)Common Stock866USD 184.23USD 159,543SEC filing ↗
2026-08-14Thakar Sumedh SSale (S)Common Stock3,200USD 188.97USD 604,711SEC filing ↗
2026-08-03Kim Joo MiSale (S)Common Stock1,627USD 153.04USD 248,996SEC filing ↗
2026-08-01Thakar Sumedh STax withholding (F)Common Stock6,748USD 144.75USD 976,773SEC filing ↗
2026-08-01POSEY BRUCE KTax withholding (F)Common Stock2,269USD 144.75USD 328,438SEC filing ↗
2026-08-01Kim Joo MiTax withholding (F)Common Stock3,845USD 144.75USD 556,564SEC filing ↗
2026-07-20Pfeiffer WendySale (S)Common Stock500USD 158.19USD 79,095SEC filing ↗
2026-07-20POSEY BRUCE KSale (S)Common Stock882USD 158.17USD 139,510SEC filing ↗
2026-07-14Thakar Sumedh SSale (S)Common Stock3,200USD 160.50USD 513,602SEC filing ↗
2026-07-06POSEY BRUCE KSale (S)Common Stock1,000USD 155.00USD 155,000SEC filing ↗
2026-07-02Kim Joo MiSale (S)Common Stock965USD 143.44USD 138,420SEC filing ↗
2026-06-30Thakar Sumedh SSale (S)Common Stock30,000USD 135.00USD 4,050,000SEC filing ↗
2026-06-29Thakar Sumedh SSale (S)Common Stock10,000USD 126.75USD 1,267,542SEC filing ↗
2026-06-26Thakar Sumedh SSale (S)Common Stock10,000USD 120.48USD 1,204,826SEC filing ↗
2026-06-22Pfeiffer WendySale (S)Common Stock500USD 110.55USD 55,275SEC filing ↗
2026-06-22POSEY BRUCE KSale (S)Common Stock865USD 109.44USD 94,670SEC filing ↗
2026-06-15Thakar Sumedh SSale (S)Common Stock3,200USD 114.80USD 367,371SEC filing ↗
2026-06-12Hank Jeffrey PSale (S)Common Stock470USD 110.75USD 52,052SEC filing ↗
2026-06-12Berquist ThomasSale (S)Common Stock939USD 110.75USD 103,994SEC filing ↗
2026-06-11Hank Jeffrey PSale (S)Common Stock470USD 108.88USD 51,174SEC filing ↗
2026-06-10Zangardi John A.Award / grant (A)Common Stock2,628USD 0.00USD 0SEC filing ↗
2026-06-10Rogers Kristi MarieAward / grant (A)Common Stock2,628USD 0.00USD 0SEC filing ↗
2026-06-10Pfeiffer WendyAward / grant (A)Common Stock2,628USD 0.00USD 0SEC filing ↗
2026-06-10Hank Jeffrey PAward / grant (A)Common Stock2,628USD 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 date2026-10-18
Ranking versionUS-v1.2
Data qualityPASS ELIGIBLE · —
TickerQLYS
CIK0001107843
SectorTechnology
IndustrySoftware—Infrastructure Yahoo Finance
SEC SIC7372 Services-Prepackaged Software
ExchangeNasdaq

Data coverage

Local Form 4 history1,333 transaction lines from 2020-01-02 to 2026-10-14
1 P purchase lines · 889 S sale lines · 443 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.