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QLYS

Qualys, Inc.

TechnologyRussell 2000

Qualys, Inc. insider trading

Qualys, Inc. files with the SEC as a Services-Prepackaged Software company headquartered in Foster City, CA. Every time one of its executives or directors buys or sells the stock, the filing appears here the moment it reaches the SEC — with grants and option exercises set apart from the trades that cost the insider their own money.

From SEC filings

Recent QLYS insider transactions

5 insiders traded QLYS on the open market between Aug 14, 2026 and Sep 14, 2026 — 24 sales worth $1.5M, of which every one was pre-scheduled under a 10b5-1 plan.

Bought
—
Sold
$1.5M

24 of 24 on a 10b5-1 plan

Net
−$1.5M
Insiders
5

Open-market purchases (code P) and sales (code S) from Qualys, Inc.'s own SEC Form 4 filings. Grants and option exercises are excluded — they are compensation, not decisions. Share counts are derived from the reported value and price. Verify any figure against the original filing before acting on it; this is monitoring, not advice.

Filing history last read from EDGAR on Sep 22, 2026. The live dashboard shows new filings the moment they clear.

Every QLYS Form 4 on SEC.gov

SEC Form 4 data, Q3 2024 to Q2 2026

QLYS insider trading by quarter

Between Jul 01, 2024 and Jun 30, 2026, 8 insiders traded QLYS on the open market: 1 purchase worth $628 and 257 sales worth $44.3M, 251 of the sales pre-scheduled under a 10b5-1 plan. In the last four quarters alone: 0 purchases and 135 sales ($23.7M), by 8 insiders.

QuarterBoughtSold
Q2 2026—−$5.4M31 sales · 29 on a plan
Q1 2026—−$2.8M24 sales · all on a plan
Q4 2025—−$8.3M41 sales · all on a plan
Q3 2025—−$7.2M39 sales · 35 on a plan
Q2 2025—−$5.4M36 sales · all on a plan
Q1 2025—−$4.7M29 sales · all on a plan
Q4 2024—−$6.9M35 sales · all on a plan
Q3 2024+$6281 buy−$3.5M22 sales · all on a plan
Largest purchase
+$628 of QLYS by Zangardi John A. (Director) on Aug 13, 2024.
Largest sale
−$1.2M of QLYS by Thakar Sumedh S (CEO & President · Director) on Jun 01, 2026, under a 10b5-1 plan.

Open-market transactions through Jun 30, 2026most recent first

  • Thakar Sumedh S10b5-1

    CEO & President · Director

    −$634K

    Jun 29, 2026

    4,994 sh · $126.96

  • Thakar Sumedh S10b5-1

    CEO & President · Director

    −$339.1K

    Jun 29, 2026

    2,700 sh · $125.60

  • Thakar Sumedh S10b5-1

    CEO & President · Director

    −$294.4K

    Jun 29, 2026

    2,306 sh · $127.66

  • Thakar Sumedh S10b5-1

    CEO & President · Director

    −$1.2M

    Jun 26, 2026

    9,800 sh · $120.47

  • Thakar Sumedh S10b5-1

    CEO & President · Director

    −$24.2K

    Jun 26, 2026

    200 sh · $121.10

  • Pfeiffer Wendy10b5-1

    Director

    −$55.3K

    Jun 22, 2026

    500 sh · $110.55

  • Posey Bruce K10b5-1

    Chief Legal Officer

    −$50.6K

    Jun 22, 2026

    465 sh · $108.80

  • Posey Bruce K10b5-1

    Chief Legal Officer

    −$20.7K

    Jun 22, 2026

    188 sh · $109.84

  • Posey Bruce K10b5-1

    Chief Legal Officer

    −$13.7K

    Jun 22, 2026

    123 sh · $111.73

  • Posey Bruce K10b5-1

    Chief Legal Officer

    −$5.2K

    Jun 22, 2026

    48 sh · $107.40

  • Posey Bruce K10b5-1

    Chief Legal Officer

    −$4.5K

    Jun 22, 2026

    41 sh · $110.48

  • Thakar Sumedh S10b5-1

    CEO & President · Director

    −$173.5K

    Jun 15, 2026

    1,500 sh · $115.66

  • Thakar Sumedh S10b5-1

    CEO & President · Director

    −$171.5K

    Jun 15, 2026

    1,500 sh · $114.31

  • Thakar Sumedh S10b5-1

    CEO & President · Director

    −$22.4K

    Jun 15, 2026

    200 sh · $112.08

  • Berquist Thomas10b5-1

    Director

    −$104K

    Jun 12, 2026

    939 sh · $110.75

From SEC's quarterly Form 3, 4 and 5 data sets: code P purchases and code S sales of common stock, by the date the trade happened. Where a fund and the people who control it each report the same block, it is counted once. Trades made in the last days of Q2 2026 but filed after it closed arrive with SEC's next quarterly release.

Qualys, Inc. company record

SEC industry classification
Services-Prepackaged Software
Headquarters
Foster City, CA
Incorporated in
DE
Listed on
Nasdaq
SEC Central Index Key
0001107843

Sourced from this company's own SEC submissions record. The industry label is SEC's Standard Industrial Classification, which is more specific than the Technology sector shown above.

After insiders bought QLYS

What the stock actually did in the 90 days following each open-market purchase

Don't check QLYS — let it ping you

Get told the moment an insider moves on QLYS

Pro watches Qualys, Inc. for you and sends a Telegram ping within moments of a Form 4 clearing EDGAR — a C-suite open-market buy, a cluster, a 10b5-1 regime break — long before it reaches the press. Add QLYS to a watchlist, see each mover's benchmark-measured track record and which legendary funds hold it, and read the full filing history instead of the last 72 hours.

Track QLYS on the live dashboardFilings on SEC.gov

The live dashboard is free to open. Alerts, watchlists, full filing history and each mover's benchmark-measured track record are Pro. Monitoring, not advice.

How to read QLYS insider activity

Open-market purchase (code P)
An insider spending their own money at market price. This is the only buy code that reliably carries signal — it is a decision, not compensation.
Grants and option exercises (codes A, M)
Scheduled compensation. Most "insider buying" headlines are really this, which is why InsiderPulse weights it at a fraction of a real purchase.
Cluster buy
Two or more different insiders buying on the open market in the same window. One executive buying can mean anything; three is much harder to explain away.

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This week on the tape: who actually chose to sellThe weekly split of scheduled 10b5-1 selling vs deliberate sales, with the deciders named.

Questions

Are QLYS insiders buying or selling?
Between Aug 14, 2026 and Sep 14, 2026, 5 Qualys, Inc. insiders made no open-market purchases and 24 sales worth $1.5M, a net sale of $1.5M. 24 of the sales were pre-scheduled under a Rule 10b5-1 plan.
How much QLYS stock have insiders bought and sold in the last two years?
Between Jul 01, 2024 and Jun 30, 2026, 8 Qualys, Inc. insiders made 1 open-market purchase worth $628 and 257 sales worth $44.3M. 251 of the sales were pre-scheduled under a Rule 10b5-1 plan. In the four quarters to Jun 30, 2026: no purchases and 135 sales ($23.7M). The largest purchase was Zangardi John A. buying $628 on Aug 13, 2024. The largest sale was Thakar Sumedh S selling $1.2M on Jun 01, 2026.
What was the largest recent QLYS insider trade?
Thakar Sumedh S (CEO & President · Director) sold $259.4K of QLYS stock on Sep 14, 2026 at about $172.92 a share, under a pre-scheduled 10b5-1 plan.
When did an insider last buy QLYS shares?
No open-market purchase by a Qualys, Inc. insider appears in the filings from Aug 14, 2026 to Sep 14, 2026 — every recorded open-market transaction in that period was a sale. Before that, the most recent purchase in SEC's data was Zangardi John A. buying $628 on Aug 13, 2024.
Where does QLYS insider trading data come from?
From the Form 4 filings Qualys, Inc.'s officers, directors and 10% owners must send the SEC within two business days of a trade. Each row on this page links to its original filing on SEC EDGAR. Share grants and option exercises are kept apart from open-market purchases and sales, because only the latter cost the insider their own money.

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