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QLYS QUALYS, INC. Insider Trading

Latest: CEO & PRESIDENT Sold $1.5M of Shares · Jun 2026

Multiple insiders have been active at QUALYS, INC. (QLYS): 4 distinct insiders account for 1 buy filing and 36 sell filings as of Jul 2026. Its highest-significance filing in the last 90 days: CEO & PRESIDENT Sumedh S Thakar sold $1.5M, transaction dated Jun 2026.

37 filings analyzed · Latest 2026-07-15

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Buys
1
Sells
36
Insiders
4
Direction
Net selling

QUALYS, INC. leadership

CEO
Sumedh S. Thakar — CHIEF EXECUTIVE OFFICER
CFO
Joo Mi Kim — CHIEF FINANCIAL OFFICER
General Counsel
Bruce K. Posey — Chief Legal Officer
Chair
Jeffrey P. Hank — Chair of the Board

Historically, stocks have lagged the S&P 500 by a median ~3% over the 90 days after a low insider sell (n ≈ 1,162, 2024-2026). Past results don't predict the future. How we measure this ↗

July 2026
2026-07-15 10b5-1 Plan
low
CEO & PRESIDENT
3,200 shares
$513,611
@ $160.50
Significance 3

CEO Sumedh S Thakar sold 3,200 shares ($513.6K) at prices $149.30–$161.69 on 2026-07-14 via scheduled 10b5-1 plan

CEO Sumedh S Thakar executed 8 separate sales totaling 3,200 shares for $513,610.79 at blended average price $160.50, reducing his holdings from 196,686 to 193,486 shares (-1.6%). This transaction was part of a pre-arranged 10b5-1 trading plan adopted 2026-02-27, making it scheduled rather than discretionary. Stock price has appreciated 39.0% over 30 days and 89.5% over 90 days, currently trading at $159.32, only 5.1% below its 52-week high of $167.86. The CEO's same-ticker trading history shows 5 prior sales at QLYS within the prior two weeks (2026-06-29 and 2026-06-30), all with outcomes not yet measurable. Cross-ticker, his prior 20 sells averaged negative 90-day returns of -35.0%, though that track record predates the current strong momentum in QLYS.

2026-07-01 10b5-1 Plan
medium
CEO & PRESIDENT
30,000 shares
$4,050,000
@ $135.00
Significance 4

CEO Sumedh S Thakar sells 30,000 QLYS shares for $4,050,000 via 10b5-1 plan; stock at $143.44, up 25.8% in 30 days.

Sumedh S Thakar, CEO & President of Qualys Inc., executed 3 separate sales totaling 30,000 shares for $4,050,000 on 2026-06-30, reducing holdings by -13.2% to 196,686 shares post-transaction. This sale was part of a pre-arranged 10b5-1 trading plan adopted 2026-02-27, making it a scheduled, non-discretionary transaction. The stock has appreciated 25.8% over the 30 days preceding this filing and 62.3% over 90 days, trading at $143.44 against a 52-week high of $155.47. Notably, Thakar's cross-ticker track record shows 20 prior sells with an average 90-day return of -30.0%, but his prior QLYS transaction on 2026-01-14 produced a -38.2% 90-day outcome. Since the sale was pre-scheduled rather than discretionary, it reflects calendar-based execution rather than a response to current market conditions or company fundamentals.

June 2026
2026-06-30 10b5-1 Plan
medium
CEO & PRESIDENT
10,000 shares
$1,267,538
@ $126.75
Significance 5

Qualys CEO sold 10,000 shares for $1.3M via 3 scheduled transactions; pre-arranged 10b5-1 plan.

Sumedh S Thakar, CEO & PRESIDENT, executed 3 separate sales totaling 10,000 shares for $1,267,537.55 on 2026-06-29 at a blended average price of $126.75. This transaction is part of a pre-arranged 10b5-1 trading plan adopted on 2026-02-27, meaning the sales were scheduled and non-discretionary rather than reflecting real-time market timing decisions. Post-transaction, Thakar retains 226,686 shares, representing a -4.2% reduction in holdings. His prior sales across all tickers show an average 90-day return of -30.0%, though outcomes at QLYS specifically are limited; a January 2026 QLYS sale posted a -38.2% 90-day return, but subsequent June 1st QLYS sales lack measurable outcomes yet. The current stock price of $128.32 is +17.4% over 30 days and +46.1% over 90 days, outpacing recent market momentum but remaining -17.5% from its 52-week high.

2026-06-29 10b5-1 Plan
low
CEO & PRESIDENT
10,000 shares
$1,204,814
@ $120.48
Significance 4

CEO Sumedh S Thakar sells 10,000 shares ($1.2M) via 10b5-1 plan; stock +17.4% (30d), -17.5% from 52-wk high

Sumedh S Thakar, CEO & PRESIDENT, executed 2 separate sales totaling 10,000 shares for $1,204,814.24 at a blended average price of $120.48 on 2026-06-26, reducing his holdings from 246.7K to 236.7K shares (-4.1%). This transaction is part of a pre-arranged 10b5-1 trading plan adopted on 2026-02-27, meaning it is scheduled and not discretionary. At the time of sale, the stock was trading 17.5% below its 52-week high and had gained 17.4% over the prior 30 days and 46.1% over 90 days. Thakar's cross-ticker track record shows 20 prior sells with an average 90-day return of -30.0%, while his same-ticker history at QLYS includes a prior January 2026 sale followed by a 90-day return of -38.2%; however, four more recent same-ticker sales on 2026-06-01 have outcomes not yet measurable. The stock is trading at a P/E of 22.43 with positive fundamentals (revenue $175.6M, net income $50.6M, annual growth +10.1%).

2026-06-02 10b5-1 Plan
medium
CEO & PRESIDENT
13,200 shares
$1,514,407
@ $114.73
Significance 6

QUALYS CEO Sumedh S Thakar sold 13,200 shares for $1,514,407.18 via 10b5-1 plan; holds 249,886 shares post-sale

Sumedh S Thakar, CEO & PRESIDENT of QUALYS, INC., executed 4 separate sales totaling 13,200 shares for $1,514,407.18 at prices ranging from $112.46 to $115.57 on 2026-06-01, reducing his holdings by 5.0% to 249,886 shares. The transaction is part of a pre-arranged 10b5-1 trading plan adopted on 2026-02-27, meaning it is scheduled and non-discretionary. Examining his prior sales at QUALYS specifically, 5 recent trades show 30-day returns of -22.1%, -20.5%, -21.1%, -21.8%, and -9.6%, with 90-day returns of -38.2%, -37.0%, -37.4%, -38.0%, and -32.8% respectively. His cross-ticker track record across 20 prior sales shows average 30-day return of -5.2% and average 90-day return of -21.4%. The company posts solid fundamentals: $175,638,000.00 revenue in the latest quarter, net income of $50,643,000.00, annual revenue growth of +10.1%, and P/E of 19.83.

February 2026
2026-02-06 10b5-1 Plan
low
Kim Joo Mi Sell
CHIEF FINANCIAL OFFICER
6,799 shares
$873,369
@ $128.46
Significance 3

CFO Kim Joo Mi sells 6,799 shares at blended average $128.46 ($873.4K) under 10b5-1 plan

Kim Joo Mi, Chief Financial Officer of QUALYS, INC., executed 5 separate sales totaling 6,799 shares (6.8K shares) for $873,369.30 ($873.4K) on 2026-02-04. The sales spanned a narrow price range of $125.25 to $129.76, reflecting execution over a single trading day at a blended average price of $128.46. This transaction is part of a pre-arranged 10b5-1 trading plan adopted on 2025-08-12, meaning it was scheduled and non-discretionary. Following the sale, Kim retains 88,489 shares (88.5K shares), representing a reduction of 7.1% in holdings. The structured, planned nature of this divestiture and the CFO's substantial continued stake of 88.5K shares limit the signaling value of this specific filing.

January 2026
2026-01-16 10b5-1 Plan
medium
CEO & PRESIDENT
5,000 shares
$668,817
@ $133.76
Significance 5

CEO Sumedh Thakar sells 5,000 shares of QLYS at $133.76 avg for $668.8K; retains 247.8K shares post-transaction.

Sumedh Thakar, CEO & President of QUALYS, INC., executed 4 separate sales on 2026-01-14 totaling 5,000 shares ($668.8K) at prices ranging from $131.98 to $134.75, reducing his holdings to 247.8K shares (a -2.0% reduction). The blended average transaction price of $133.76 is only 0.60% below the current price of $134.57, indicating the sale occurred near current market levels rather than at a significant discount. His same-ticker history at QLYS shows 5 prior sells on 2025-12-15, all of which experienced negative 30-day returns (ranging from -7.9% to -10.4%), suggesting those earlier liquidations preceded downward price movement. The company reports strong fundamentals with $169.9M quarterly revenue, +9.6% annual growth, and $50.3M net income, with a P/E of 25.54 and market cap of $4.8B. This current transaction represents a modest reduction from an already substantial retained position, occurring within a normal trading range (-12.5% from the 52-week high).

2026-01-05 10b5-1 Plan
medium
Kim Joo Mi Sell
CHIEF FINANCIAL OFFICER
4,753 shares
$621,540
@ $130.77
Significance 5

QLYS CFO Kim Joo Mi sold 4,753 shares (4.8% of holdings) for $621,539.91 across 3 sales on 2026-01-02.

Kim Joo Mi, QLYS CFO, executed 3 separate sales on 2026-01-02 totaling 4,753 shares for $621,539.91, reducing holdings from 99,425 to 94,672 shares. The transaction follows 5 prior trades at QLYS in early December, including 3 sales on 2025-12-09 (timing outcomes pending) and 2 sales on 2025-12-02 (which posted -8.3% and -8.9% 30-day returns). Across the insider's cross-ticker trade history, prior sells show an average 90-day return of -7.6% with a 100% well-timed rate; however, no outcomes are yet measurable at the 90-day mark for the most recent QLYS sales. The stock is currently down 10.3% over 30 days and down 14.8% from its 52-week high, creating context for the pattern of recent executive sales but not establishing causation or predictive signal without measurable outcomes on this filing's trades.

December 2025
2025-12-16 10b5-1 Plan
medium
CEO & PRESIDENT
8,500 shares
$1,250,551
@ $147.12
Significance 5

CEO Thakar sells 8,500 shares for $1,250,550.64 on 2025-12-15; post-transaction holdings: 252,800 shares

Thakar Sumedh S, CEO & PRESIDENT, executed 7 separate sales totaling 8,500 shares for $1,250,550.64 (blended average $147.12) on 2025-12-15, reducing his holdings from 261,300 to 252,800 shares (-3.3%). The sale occurred near the 52-week high of $153.80 (current price $143.57 is -6.6% from that peak). Across his cross-ticker track record, Thakar's 20 prior sells have yielded an average 90-day return of -1.6% with a 71.43% well-timed rate, indicating a history of sales executed before subsequent declines. At QLYS specifically, his most recent prior sales on 2025-11-14 and 2025-10-14 showed positive 30-day returns (+6.1% to +13.4%), though 90-day outcomes remain unmeasurable. The company shows solid fundamentals: $169.9M quarterly revenue, $50.3M net income, +9.6% annual growth, and a P/E of 27.24 on a $5.1B market cap.

2025-12-10 10b5-1 Plan
medium
Kim Joo Mi Sell
CHIEF FINANCIAL OFFICER
8,649 shares
$1,295,705
@ $149.81
Significance 5

CFO Kim Joo Mi sold 8,649 shares at blended avg $149.81 on 2025-12-09, reducing holdings to 99,425 shares.

Kim Joo Mi, Chief Financial Officer of Qualys, Inc., executed 3 separate sales totaling 8,649 shares for $1,295,705.26 on 2025-12-09, at prices ranging from $148.27 to $150.42 per share. Post-transaction holdings stand at 99,425 shares, representing an 8.0% reduction from pre-transaction holdings of 108,074 shares. The transactions occurred near the 52-week high ($156.78), with the current stock price at $151.75. Kim's cross-ticker track record shows a 100.00% well-timed rate on 16 prior sells with an average 90-day return of -7.6%, though at Qualys specifically, 5 prior trades remain too recent to measure outcomes. The company reports a P/E of 28.80 with recent quarterly revenue of $169,882,000.00 and net income of $50,346,000.00, indicating solid profitability alongside premium valuation. Investors should monitor whether this sale pattern reflects scheduled rebalancing or discretionary portfolio activity, and track subsequent price action against the insider's historical timing accuracy.

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