Form4insider filings, from the source

Company · CIK 0001107843 · SIC 7372 — Services-Prepackaged Software · Nasdaq

QUALYS, INC. · QLYS

Insider activity reported against this company. All insider holders · On EDGAR ↗

1M3M6M1Y2YAll datashares as filed — not split-adjusted
Open-market buys & salesbuys $0 · 0sales $8.4M · 15net −$8.4M
$10k$10k$100k$100k$1M$1M$10M$10MbuyssalesJun 28Jul 13Jul 28Aug 13Aug 28Sep 13Sep 28

Reported at this company — common stock

TradeReported (ET)InsiderSharesAvg priceTotalOwned afterΔ stakeFlags
Sep 21, 2026 SForm 4 →Sep 22, 9:12 pm EDTBruce K PoseyCHIEF LEGAL OFFICER866$179.49$155,44258,688−1.45%10b5-1
Sep 14, 2026 SForm 4 →Sep 15, 8:21 pm EDTSumedh S ThakarCEO & PRESIDENT, Director3,200$170.05$544,152180,338−1.74%10b5-1
Sep 2, 2026 SForm 4 →Sep 3, 4:04 pm EDTThomas BerquistDirector511$175.27$89,5636,270−7.54%10b5-1
Sep 2, 2026 SForm 4 →Sep 3, 4:03 pm EDTJoo Mi KimCHIEF FINANCIAL OFFICER1,030$169.62$174,71274,713−1.36%10b5-1
Aug 20, 2026 SForm 4 →Aug 21, 4:09 pm EDTBruce K PoseyCHIEF LEGAL OFFICER866$184.23$159,54459,554−1.43%10b5-1
Aug 20, 2026 SForm 4 →Aug 21, 4:05 pm EDTWendy PfeifferDirector500$185.00$92,50011,710−4.10%10b5-1
Aug 14, 2026 SForm 4 →Aug 17, 4:04 pm EDTSumedh S ThakarCEO & PRESIDENT, Director3,200$188.97$604,708183,538−1.71%10b5-1
Aug 3, 2026 SForm 4 →Aug 4, 5:25 pm EDTJoo Mi KimCHIEF FINANCIAL OFFICER1,627$153.04$248,99575,743−2.10%10b5-1
Aug 1, 2026 FForm 4 →Aug 3, 5:01 pm EDTJoo Mi KimCHIEF FINANCIAL OFFICER3,845$144.75$556,56477,370—
Aug 1, 2026 FForm 4 →Aug 3, 5:00 pm EDTBruce K PoseyCHIEF LEGAL OFFICER2,269$144.75$328,43860,420—
Aug 1, 2026 FForm 4 →Aug 3, 4:59 pm EDTSumedh S ThakarCEO & PRESIDENT, Director6,748$144.75$976,773186,738—
Jul 20, 2026 SForm 4 →Jul 21, 7:38 pm EDTBruce K PoseyCHIEF LEGAL OFFICER882$158.17$139,50862,689−1.39%10b5-1
Jul 20, 2026 SForm 4 →Jul 21, 7:37 pm EDTWendy PfeifferDirector500$158.19$79,09512,210−3.93%10b5-1
Jul 14, 2026 SForm 4 →Jul 15, 7:58 pm EDTSumedh S ThakarCEO & PRESIDENT, Director3,200$160.50$513,611193,486−1.63%10b5-1
Jul 6, 2026 SForm 4 →Jul 6, 7:16 pm EDTBruce K PoseyCHIEF LEGAL OFFICER1,000$155.00$155,00063,571−1.55%10b5-1
Jul 2, 2026 SForm 4 →Jul 6, 7:15 pm EDTJoo Mi KimCHIEF FINANCIAL OFFICER965$143.44$138,42081,215−1.17%10b5-1
Jun 30, 2026 SForm 4 →Jul 1, 9:39 pm EDTSumedh S ThakarCEO & PRESIDENT, Director30,000$135.00$4,050,000196,686−13.2%10b5-1
Jun 29, 2026 SForm 4 →Jun 30, 4:21 pm EDTSumedh S ThakarCEO & PRESIDENT, Director10,000$126.75$1,267,538226,686−4.23%10b5-1

Reported at this company — derivatives (options, RSUs, warrants)

No reported derivative activity in this period.