Transactions
80
Insider / QUALYS, INC.
Thakar Sumedh S
CEO & PRESIDENT at QUALYS, INC.
- Company
- QUALYS, INC.
- Ticker
- QLYS
- First filing on record
- October 15, 2025
- Latest trade on record
- October 14, 2026
- SEC filings
- EDGAR ↗
Thakar Sumedh S, CEO & PRESIDENT at QUALYS, INC., has disclosed 80 transactions in QLYS since October 15, 2025: 0 purchases (0 open-market buys) and 69 sales, worth about $22.4M at the reported prices. The latest was filed October 15, 2026, 1 day after the trade.
Open-market buys
0
Sales
69
Avg. disclosure lag
1.6d
Trading in charts
Trade timeline
When does this person trade, how big, and in which direction? Every trade in the last 12 months.
Bought (above the line)Sold (below the line)Other transaction
In the last 12 months Thakar Sumedh S made no purchases and 67 sales worth $21M, plus 9 other transactions. Dot size is the dollar amount.
Portfolio mix
Which stocks does this person trade most? Tile size is dollars traded, all time on record.
Thakar Sumedh S has traded 1 stock on record; the largest by dollars is QLYS.
Reporting lag
Does this person report on time? One bar per filing against the Form 4 deadline.
On timeLate
0 of 20 filings on record were reported after the Form 4 deadline (two business days, counted here as 4 calendar days).
What kind of transactions
Most Form 4 rows are pay arriving or tax being withheld, not a decision to buy or sell. Only code P is an open-market purchase and code S an open-market sale. What each code means: Form 4 transaction codes.
| Code | Meaning | Rows | Shares | Value |
|---|---|---|---|---|
| S | Open-market sale | 61 | 111,900 | $15.2M |
| F | Shares withheld for tax | 8 | 53,694 | $6.7M |
| M | Option exercise or conversion | 6 | 39,000 | $498K |
| A | Grant or award | 5 | 117,088 | — |
| Year | Rows | Bought | Sold |
|---|---|---|---|
| 2026 | 58 | 0 | 54 · $17.3M |
| 2025 | 22 | 0 | 15 · $4.6M |
Transactions
| Security | Side | Trade date | Disclosed | Lag | Shares | Price | Value | Flags | Source | Share |
|---|---|---|---|---|---|---|---|---|---|---|
| QLYS | Sell S | October 14, 2026 | October 15, 2026 | 1d | 400 | $194 | $78K | 10b5-1 plan | Form 4 ↗ | |
| QLYS | Sell S | October 14, 2026 | October 15, 2026 | 1d | 500 | $193 | $96K | 10b5-1 plan | Form 4 ↗ | |
| QLYS | Sell S | October 14, 2026 | October 15, 2026 | 1d | 400 | $190 | $76K | 10b5-1 plan | Form 4 ↗ | |
| QLYS | Sell S | October 14, 2026 | October 15, 2026 | 1d | 1,500 | $189 | $284K | 10b5-1 plan | Form 4 ↗ | |
| QLYS | Sell S | October 14, 2026 | October 15, 2026 | 1d | 400 | $188 | $75K | 10b5-1 plan | Form 4 ↗ | |
| QLYS | Sell S | September 14, 2026 | September 15, 2026 | 1d | 100 | $175 | $17K | 10b5-1 plan | Form 4 ↗ | |
| QLYS | Sell S | September 14, 2026 | September 15, 2026 | 1d | 500 | $174 | $87K | 10b5-1 plan | Form 4 ↗ | |
| QLYS | Sell S | September 14, 2026 | September 15, 2026 | 1d | 1,500 | $173 | $259K | 10b5-1 plan | Form 4 ↗ | |
| QLYS | Sell S | September 14, 2026 | September 15, 2026 | 1d | 100 | $171 | $17K | 10b5-1 plan | Form 4 ↗ | |
| QLYS | Sell S | September 14, 2026 | September 15, 2026 | 1d | 200 | $169 | $34K | 10b5-1 plan | Form 4 ↗ | |
| QLYS | Sell S | September 14, 2026 | September 15, 2026 | 1d | 100 | $168 | $17K | 10b5-1 plan | Form 4 ↗ | |
| QLYS | Sell S | September 14, 2026 | September 15, 2026 | 1d | 100 | $166 | $17K | 10b5-1 plan | Form 4 ↗ | |
| QLYS | Sell S | September 14, 2026 | September 15, 2026 | 1d | 300 | $162 | $49K | 10b5-1 plan | Form 4 ↗ | |
| QLYS | Sell S | September 14, 2026 | September 15, 2026 | 1d | 200 | $159 | $32K | 10b5-1 plan | Form 4 ↗ | |
| QLYS | Sell S | September 14, 2026 | September 15, 2026 | 1d | 100 | $154 | $15K | 10b5-1 plan | Form 4 ↗ | |
| QLYS | Sell S | August 14, 2026 | August 17, 2026 | 3d | 100 | $192 | $19K | 10b5-1 plan | Form 4 ↗ | |
| QLYS | Sell S | August 14, 2026 | August 17, 2026 | 3d | 600 | $190 | $114K | 10b5-1 plan | Form 4 ↗ | |
| QLYS | Sell S | August 14, 2026 | August 17, 2026 | 3d | 1,300 | $189 | $246K | 10b5-1 plan | Form 4 ↗ | |
| QLYS | Sell S | August 14, 2026 | August 17, 2026 | 3d | 794 | $188 | $149K | 10b5-1 plan | Form 4 ↗ | |
| QLYS | Sell S | August 14, 2026 | August 17, 2026 | 3d | 406 | $186 | $76K | 10b5-1 plan | Form 4 ↗ | |
| QLYS | Sell F | August 1, 2026 | August 3, 2026 | 2d | 6,748 | $145 | $977K | Form 4 ↗ | ||
| QLYS | Sell S | July 14, 2026 | July 15, 2026 | 1d | 200 | $164 | $33K | 10b5-1 plan | Form 4 ↗ | |
| QLYS | Sell S | July 14, 2026 | July 15, 2026 | 1d | 200 | $162 | $32K | 10b5-1 plan | Form 4 ↗ | |
| QLYS | Sell S | July 14, 2026 | July 15, 2026 | 1d | 1,570 | $162 | $254K | 10b5-1 plan | Form 4 ↗ | |
| QLYS | Sell S | July 14, 2026 | July 15, 2026 | 1d | 730 | $161 | $117K | 10b5-1 plan | Form 4 ↗ | |
| QLYS | Sell S | July 14, 2026 | July 15, 2026 | 1d | 200 | $158 | $32K | 10b5-1 plan | Form 4 ↗ | |
| QLYS | Sell S | July 14, 2026 | July 15, 2026 | 1d | 100 | $155 | $16K | 10b5-1 plan | Form 4 ↗ | |
| QLYS | Sell S | July 14, 2026 | July 15, 2026 | 1d | 100 | $152 | $15K | 10b5-1 plan | Form 4 ↗ | |
| QLYS | Sell S | July 14, 2026 | July 15, 2026 | 1d | 100 | $149 | $15K | 10b5-1 plan | Form 4 ↗ | |
| QLYS | Sell S | June 30, 2026 | July 1, 2026 | 1d | 10,000 | $140 | $1.4M | 10b5-1 plan | Form 4 ↗ | |
| QLYS | Sell S | June 30, 2026 | July 1, 2026 | 1d | 10,000 | $135 | $1.4M | 10b5-1 plan | Form 4 ↗ | |
| QLYS | Sell S | June 30, 2026 | July 1, 2026 | 1d | 10,000 | $130 | $1.3M | 10b5-1 plan | Form 4 ↗ | |
| QLYS | Sell S | June 29, 2026 | June 30, 2026 | 1d | 2,306 | $128 | $294K | 10b5-1 plan | Form 4 ↗ | |
| QLYS | Sell S | June 29, 2026 | June 30, 2026 | 1d | 4,994 | $127 | $634K | 10b5-1 plan | Form 4 ↗ | |
| QLYS | Sell S | June 29, 2026 | June 30, 2026 | 1d | 2,700 | $126 | $339K | 10b5-1 plan | Form 4 ↗ | |
| QLYS | Sell S | June 26, 2026 | June 29, 2026 | 3d | 200 | $121 | $24K | 10b5-1 plan | Form 4 ↗ | |
| QLYS | Sell S | June 26, 2026 | June 29, 2026 | 3d | 9,800 | $120 | $1.2M | 10b5-1 plan | Form 4 ↗ | |
| QLYS | Sell S | June 15, 2026 | June 16, 2026 | 1d | 1,500 | $116 | $173K | 10b5-1 plan | Form 4 ↗ | |
| QLYS | Sell S | June 15, 2026 | June 16, 2026 | 1d | 1,500 | $114 | $171K | 10b5-1 plan | Form 4 ↗ | |
| QLYS | Sell S | June 15, 2026 | June 16, 2026 | 1d | 200 | $112 | $22K | 10b5-1 plan | Form 4 ↗ | |
| QLYS | Sell S | June 1, 2026 | June 2, 2026 | 1d | 39 | $116 | $4,507 | 10b5-1 plan | Form 4 ↗ | |
| QLYS | Sell S | June 1, 2026 | June 2, 2026 | 1d | 10,861 | $115 | $1.2M | 10b5-1 plan | Form 4 ↗ | |
| QLYS | Sell S | June 1, 2026 | June 2, 2026 | 1d | 1,700 | $114 | $194K | 10b5-1 plan | Form 4 ↗ | |
| QLYS | Sell S | June 1, 2026 | June 2, 2026 | 1d | 600 | $112 | $67K | 10b5-1 plan | Form 4 ↗ | |
| QLYS | Sell F | May 1, 2026 | May 4, 2026 | 3d | 6,748 | $89 | $597K | Form 4 ↗ | ||
| QLYS | Sell F | February 3, 2026 | February 5, 2026 | 2d | 205 | $128 | $26K | Form 4 ↗ | ||
| QLYS | Other A | February 3, 2026 | February 5, 2026 | 2d | 401 | — | — | Form 4 ↗ | ||
| QLYS | Sell F | February 3, 2026 | February 5, 2026 | 2d | 7,726 | $128 | $985K | Form 4 ↗ | ||
| QLYS | Other A | February 3, 2026 | February 5, 2026 | 2d | 15,184 | — | — | Form 4 ↗ | ||
| QLYS | Sell F | February 3, 2026 | February 5, 2026 | 2d | 10,168 | $128 | $1.3M | Form 4 ↗ | ||
| QLYS | Other A | February 3, 2026 | February 5, 2026 | 2d | 19,984 | — | — | Form 4 ↗ | ||
| QLYS | Sell F | February 3, 2026 | February 5, 2026 | 2d | 10,394 | $128 | $1.3M | Form 4 ↗ | ||
| QLYS | Other A | February 3, 2026 | February 5, 2026 | 2d | 20,427 | — | — | Form 4 ↗ | ||
| QLYS | Sell F | February 1, 2026 | February 3, 2026 | 2d | 5,662 | $132 | $747K | Form 4 ↗ | ||
| QLYS | Sell S | January 14, 2026 | January 16, 2026 | 2d | 200 | $135 | $27K | 10b5-1 plan | Form 4 ↗ | |
| QLYS | Sell S | January 14, 2026 | January 16, 2026 | 2d | 3,200 | $134 | $429K | 10b5-1 plan | Form 4 ↗ | |
| QLYS | Sell S | January 14, 2026 | January 16, 2026 | 2d | 1,200 | $133 | $160K | 10b5-1 plan | Form 4 ↗ | |
| QLYS | Sell S | January 14, 2026 | January 16, 2026 | 2d | 400 | $132 | $53K | 10b5-1 plan | Form 4 ↗ | |
| QLYS | Option / conversion M | December 15, 2025 | December 16, 2025 | 1d | 6,500 | — | — | 10b5-1 planderivative | Form 4 ↗ | |
| QLYS | Sell S | December 15, 2025 | December 16, 2025 | 1d | 600 | $152 | $91K | 10b5-1 plan | Form 4 ↗ | |
| QLYS | Sell S | December 15, 2025 | December 16, 2025 | 1d | 200 | $150 | $30K | 10b5-1 plan | Form 4 ↗ | |
| QLYS | Sell S | December 15, 2025 | December 16, 2025 | 1d | 357 | $150 | $53K | 10b5-1 plan | Form 4 ↗ | |
| QLYS | Sell S | December 15, 2025 | December 16, 2025 | 1d | 1,243 | $148 | $184K | 10b5-1 plan | Form 4 ↗ | |
| QLYS | Sell S | December 15, 2025 | December 16, 2025 | 1d | 1,400 | $147 | $206K | 10b5-1 plan | Form 4 ↗ | |
| QLYS | Sell S | December 15, 2025 | December 16, 2025 | 1d | 2,100 | $146 | $307K | 10b5-1 plan | Form 4 ↗ | |
| QLYS | Sell S | December 15, 2025 | December 16, 2025 | 1d | 2,600 | $145 | $378K | 10b5-1 plan | Form 4 ↗ | |
| QLYS | Option / conversion M | December 15, 2025 | December 16, 2025 | 1d | 6,500 | $26 | $166K | 10b5-1 plan | Form 4 ↗ | |
| QLYS | Option / conversion M | November 14, 2025 | November 17, 2025 | 3d | 6,500 | — | — | 10b5-1 planderivative | Form 4 ↗ | |
| QLYS | Sell S | November 14, 2025 | November 17, 2025 | 3d | 300 | $144 | $43K | 10b5-1 plan | Form 4 ↗ | |
| QLYS | Sell S | November 14, 2025 | November 17, 2025 | 3d | 5,117 | $143 | $733K | 10b5-1 plan | Form 4 ↗ | |
| QLYS | Sell S | November 14, 2025 | November 17, 2025 | 3d | 1,661 | $142 | $236K | 10b5-1 plan | Form 4 ↗ | |
| QLYS | Sell S | November 14, 2025 | November 17, 2025 | 3d | 1,422 | $141 | $201K | 10b5-1 plan | Form 4 ↗ | |
| QLYS | Option / conversion M | November 14, 2025 | November 17, 2025 | 3d | 6,500 | $26 | $166K | 10b5-1 plan | Form 4 ↗ | |
| QLYS | Sell S | November 12, 2025 | November 13, 2025 | 1d | 2,200 | $155 | $341K | 10b5-1 plan | Form 4 ↗ | |
| QLYS | Sell F | November 1, 2025 | November 4, 2025 | 3d | 6,043 | $123 | $745K | Form 4 ↗ | ||
| QLYS | Other A | October 30, 2025 | October 31, 2025 | 1d | 61,092 | — | — | Form 4 ↗ | ||
| QLYS | Option / conversion M | October 14, 2025 | October 15, 2025 | 1d | 6,500 | — | — | 10b5-1 planderivative | Form 4 ↗ | |
| QLYS | Sell S | October 14, 2025 | October 15, 2025 | 1d | 3,957 | $127 | $504K | 10b5-1 plan | Form 4 ↗ | |
| QLYS | Sell S | October 14, 2025 | October 15, 2025 | 1d | 4,543 | $126 | $574K | 10b5-1 plan | Form 4 ↗ | |
| QLYS | Option / conversion M | October 14, 2025 | October 15, 2025 | 1d | 6,500 | $26 | $166K | 10b5-1 plan | Form 4 ↗ |
Filings
| Filed | Form | Accession | Rows | Status | Source |
|---|---|---|---|---|---|
| October 15, 2026 | Form 4 | 0001558242-26-000026 | 5 | published | EDGAR ↗ |
| September 15, 2026 | Form 4 | 0001558242-26-000024 | 10 | published | EDGAR ↗ |
| August 17, 2026 | Form 4 | 0001558242-26-000022 | 5 | published | EDGAR ↗ |
| August 3, 2026 | Form 4 | 0001558242-26-000020 | 1 | published | EDGAR ↗ |
| July 15, 2026 | Form 4 | 0001558242-26-000019 | 8 | published | EDGAR ↗ |
| July 1, 2026 | Form 4 | 0001558242-26-000018 | 3 | published | EDGAR ↗ |
| June 30, 2026 | Form 4 | 0001558242-26-000016 | 3 | published | EDGAR ↗ |
| June 29, 2026 | Form 4 | 0001558242-26-000014 | 2 | published | EDGAR ↗ |
| June 16, 2026 | Form 4 | 0001558242-26-000012 | 3 | published | EDGAR ↗ |
| June 2, 2026 | Form 4 | 0001558242-26-000010 | 4 | published | EDGAR ↗ |
| May 4, 2026 | Form 4 | 0001558242-26-000008 | 1 | published | EDGAR ↗ |
| February 5, 2026 | Form 4 | 0001558242-26-000006 | 8 | published | EDGAR ↗ |
| February 3, 2026 | Form 4 | 0001558242-26-000004 | 1 | published | EDGAR ↗ |
| January 16, 2026 | Form 4 | 0001558242-26-000002 | 4 | published | EDGAR ↗ |
| December 16, 2025 | Form 4 | 0001558242-25-000015 | 9 | published | EDGAR ↗ |
| November 17, 2025 | Form 4 | 0001558242-25-000013 | 6 | published | EDGAR ↗ |
| November 13, 2025 | Form 4 | 0001558242-25-000011 | 1 | published | EDGAR ↗ |
| November 4, 2025 | Form 4 | 0001558242-25-000009 | 1 | published | EDGAR ↗ |
| October 31, 2025 | Form 4 | 0001558242-25-000007 | 1 | published | EDGAR ↗ |
| October 15, 2025 | Form 4 | 0001558242-25-000005 | 4 | published | EDGAR ↗ |
Other insiders at QUALYS, INC.
- POSEY BRUCE K CHIEF LEGAL OFFICER 62 rows
- Kim Joo Mi CHIEF FINANCIAL OFFICER 57 rows
- Pfeiffer Wendy Director 5 rows
- Berquist Thomas Director 3 rows
- Hank Jeffrey P Director 3 rows
- Brooks Bradford L. Director 2 rows
- Rogers Kristi Marie Director 1 row
- Zangardi John A. Director 1 row
Everyone on file, with contracts and lobbying under the company's name: QUALYS, INC..
Guides for this page
- What is SEC Form 4? Who files: officers, directors and owners of more than 10% of a class of the company's shares.
- Form 4 transaction codes P = purchase. S = sale. These are the two market trades.
- Insider buying vs insider selling Selling outweighs buying by a wide margin in normal times.
- Rule 10b5-1 trading plans The plan must be set up when the insider has no important non-public information.
- Options and derivatives on Form 4 Table I = shares. Table II = options and other derivatives.
Sources and method
| Source | Filings | Rows | First filed | Newest filed | Read the originals |
|---|---|---|---|---|---|
| SEC EDGAR, Form 4 | 20 | 80 | October 15, 2025 | October 15, 2026 | Form 4 list on EDGAR |
Site built October 27, 2026. Every row in the tables above links to its own filing. To quote a figure, use the Cite button at the top of the page; see how to cite and reuse.
Every row comes from the reporting owner's Form 4 as filed with the SEC (EDGAR ownership XML), read daily. "Value" is shares × the reported price; code P is an open-market purchase, S a sale, M an option exercise, A a grant. The lag is the filing date minus the trade date; Form 4 is due within two business days. Amendments (4/A) are not merged. Details on the methodology page; report an error on corrections.
Not investment advice. Figures are public disclosures shown as filed; they may lag the trade and may be amended later. No recommendation is made or implied.