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QLYS

Qualys Inc

Technology · Software - Infrastructure

175.00$ -1.8% vs. previous close Closing price · As of: Sep 18, 2026

Ownership

Ownership Structure

Who owns Qualys Inc (QLYS)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 99.2% of the shares are freely tradable; institutional investors hold 109.1%.

Institutional ownership ?Share of the stock held by institutional investors (funds, banks, insurers) according to regulatory filings. 109.1%
Insiders ?Share of the stock held by the executives, founders and major shareholders of the company itself. 0.7%
Float ?Share of stock freely tradable on the market — not locked up in the hands of founders, insiders, or major shareholders. 99.2%
Short % of float ?Shares sold short as a percentage of the freely tradable float — high values signal many bets on falling prices. 14.5%
Shares Outstanding ?Total number of shares issued. Price times share count gives market cap. 35Mio.

Largest Shareholders

Institutions

Institutions QLYS
Name Stake (%) Shares Change (%) Date
BlackRock Inc 15.50 5,360,596 -0.2 03/31/2026
Vanguard Portfolio Management, LLC 7.33 2,537,126 +0.0 03/31/2026
Vanguard Capital Management, LLC 4.58 1,584,606 +0.0 03/31/2026
State Street Corp 4.01 1,388,720 +3.0 03/31/2026
Geode Capital Management, LLC 3.82 1,320,909 +5.2 03/31/2026
First Trust Advisors L.P. 3.27 1,130,656 +13.5 06/30/2026
AQR Capital Management LLC 3.00 1,038,928 +64.0 03/31/2026

Funds

Funds QLYS
Name Stake (%) Shares Change (%) Date
L&G Cyber Security ETF 3.74 1,292,648 +0.0 08/31/2026
iShares Core S&P Mid-Cap ETF 3.57 1,234,330 +0.0 08/31/2026
Vanguard MStar Total Stk Mkt Idx Invest 3.25 1,125,131 +0.3 07/31/2026

Largest reported positions according to regulatory filings; stake as a percentage of shares outstanding, change versus the previous filing. Source: fundamentals data.

Insider holdings

Insider holdings QLYS
Person Role Shares Value As of Type
Thakar Sumedh S CEO & PRESIDENT 180,438 31,576,650 $ Sep 14, 2026 direct
Kim Joo Mi CHIEF FINANCIAL OFFICER 74,713 13,074,775 $ Sep 2, 2026 direct
Posey Bruce K CHIEF LEGAL OFFICER 59,554 10,421,950 $ Aug 20, 2026 direct
Pfeiffer Wendy Director 11,710 2,049,250 $ Aug 20, 2026 direct
Berquist Thomas Director 6,270 1,097,250 $ Sep 2, 2026 direct

Holdings as of each person's most recent SEC Form 4 filing — excluding options and RSUs, which are not shares yet. Holdings may have changed between two filings.

Insiders

Insider Transactions

Insider Transactions
Date Person Role Type Shares Price Value
Sep 14, 2026 Thakar Sumedh S CEO & PRESIDENT Sell 500 173.92 86,960
Sep 14, 2026 Thakar Sumedh S CEO & PRESIDENT Sell 1,500 172.92 259,387
Sep 14, 2026 Thakar Sumedh S CEO & PRESIDENT Sell 300 162.43 48,729
Sep 14, 2026 Thakar Sumedh S CEO & PRESIDENT Sell 200 169.35 33,869
Sep 14, 2026 Thakar Sumedh S CEO & PRESIDENT Sell 100 174.71 17,471
Sep 2, 2026 Kim Joo Mi CHIEF FINANCIAL OFFICER Sell 102 172.37 17,582
Sep 2, 2026 Kim Joo Mi CHIEF FINANCIAL OFFICER Sell 265 171.14 45,353
Sep 2, 2026 Kim Joo Mi CHIEF FINANCIAL OFFICER Sell 204 170.05 34,690
Sep 2, 2026 Kim Joo Mi CHIEF FINANCIAL OFFICER Sell 166 168.75 28,013
Sep 2, 2026 Kim Joo Mi CHIEF FINANCIAL OFFICER Sell 293 167.49 49,074
Sep 2, 2026 Berquist Thomas Director Sell 511 175.27 89,563
Aug 20, 2026 Pfeiffer Wendy Director Sell 500 185.00 92,500
Aug 20, 2026 Posey Bruce K CHIEF LEGAL OFFICER Sell 280 185.91 52,056
Aug 20, 2026 Posey Bruce K CHIEF LEGAL OFFICER Sell 96 184.25 17,688
Aug 20, 2026 Posey Bruce K CHIEF LEGAL OFFICER Sell 393 183.58 72,148
Aug 20, 2026 Posey Bruce K CHIEF LEGAL OFFICER Sell 97 181.99 17,653
Aug 14, 2026 Thakar Sumedh S CEO & PRESIDENT Sell 100 192.27 19,227
Aug 14, 2026 Thakar Sumedh S CEO & PRESIDENT Sell 600 190.49 114,295
Aug 14, 2026 Thakar Sumedh S CEO & PRESIDENT Sell 1,300 189.41 246,232
Aug 14, 2026 Thakar Sumedh S CEO & PRESIDENT Sell 794 188.07 149,326
Aug 14, 2026 Thakar Sumedh S CEO & PRESIDENT Sell 406 186.28 75,628
Aug 3, 2026 Kim Joo Mi CHIEF FINANCIAL OFFICER Sell 827 154.51 127,779
Aug 3, 2026 Kim Joo Mi CHIEF FINANCIAL OFFICER Sell 300 152.78 45,834
Aug 3, 2026 Kim Joo Mi CHIEF FINANCIAL OFFICER Sell 200 151.47 30,294
Aug 3, 2026 Kim Joo Mi CHIEF FINANCIAL OFFICER Sell 100 155.12 15,512
Aug 1, 2026 Kim Joo Mi CHIEF FINANCIAL OFFICER Other 3,845 144.75 556,564
Aug 1, 2026 Thakar Sumedh S CEO & PRESIDENT Other 6,748 144.75 976,773
Aug 1, 2026 Posey Bruce K CHIEF LEGAL OFFICER Other 2,269 144.75 328,438
Jul 20, 2026 Pfeiffer Wendy Director Sell 500 158.19 79,095
Jul 20, 2026 Posey Bruce K CHIEF LEGAL OFFICER Sell 43 160.18 6,888
Jul 20, 2026 Posey Bruce K CHIEF LEGAL OFFICER Sell 262 159.35 41,749
Jul 20, 2026 Posey Bruce K CHIEF LEGAL OFFICER Sell 334 158.06 52,791
Jul 20, 2026 Posey Bruce K CHIEF LEGAL OFFICER Sell 243 156.71 38,081
Jul 14, 2026 Thakar Sumedh S CEO & PRESIDENT Sell 1,570 161.69 253,861
Jul 14, 2026 Thakar Sumedh S CEO & PRESIDENT Sell 730 160.81 117,395
Jul 14, 2026 Thakar Sumedh S CEO & PRESIDENT Sell 200 163.57 32,713
Jul 14, 2026 Thakar Sumedh S CEO & PRESIDENT Sell 100 155.30 15,530

Reportable transactions by officers and major shareholders from SEC Form 4 filings. "Other" includes things like stock grants and option exercises without a buy/sell character. View all insider transactions →

Data as of: September 18, 2026 · Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q)

Note: pure fact-based analysis, not investment advice and not a solicitation to buy or sell. All figures without guarantee.

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