SEC Form 4
Qualys, Inc. (QLYS) insider trading
In the 12 months to Oct 26, 2026, 6 QLYS insiders reported open-market sales of $23.2M across 44 filings; no open-market purchases were filed.
Latest filing · Last 12 months · Source: SEC EDGAR · How we count
- Open-market sales
- $23.2M
- 44 filings · 6 insiders
- Open-market purchases
- $0
- 0 filings
- Pre-arranged sales (10b5-1)
- 43 of 44
- $23.1M of $23.2M sold (100%)
Who traded QLYS, and when
- Sale
- Sale, pre-arranged (10b5-1)
QLYS daily close from Oct 27, 2025 to Oct 26, 2026, between $76.20 and $224.92, last $224.92. 44 sale and 0 purchase filings by 6 insiders, marked at their filing dates. Sumedh S. Thakar, CEO & PRESIDENT: sold $14.1M across 13 filings, first filed Nov 13, 2025, last Oct 15, 2026. Joo Mi Kim, CHIEF FINANCIAL OFFICER: sold $6.3M across 11 filings, first filed Nov 24, 2025, last Sep 3, 2026. Bruce K. Posey, CHIEF LEGAL OFFICER: sold $2.2M across 13 filings, first filed Dec 5, 2025, last Oct 21, 2026. Wendy Pfeiffer, Director: sold $277.5K across 4 filings, first filed May 26, 2026, last Aug 21, 2026. Thomas Berquist, Director: sold $193.6K across 2 filings, first filed Jun 15, 2026, last Sep 3, 2026. Jeffrey P. Hank, Director: sold $103.2K across 1 filing, first filed Jun 15, 2026, last Jun 15, 2026.
Largest mark · tap a row for others
Sumedh S. Thakar · CEO & PRESIDENT
Filing 1 of 3 within a week · $6,522,352 total
Sale $1,204,814
10,000 shares at $120.48 avg
Filed Jun 29, 2026 · traded Jun 26
Pre-arranged (10b5-1) · close on filing date $128.32
Sumedh S. Thakar · CEO & PRESIDENT
CEO & PRESIDENT
$14.1M soldJoo Mi Kim · CHIEF FINANCIAL OFFICER
CHIEF FINANCIAL OFFICER
$6.3M soldBruce K. Posey · CHIEF LEGAL OFFICER
CHIEF LEGAL OFFICER
$2.2M soldWendy Pfeiffer · Director
Director
$277.5K soldThomas Berquist · Director
Director
$193.6K soldJeffrey P. Hank · Director
Director
$103.2K soldOpen-market trades
44 filings in the last 12 months| Insider | Role | Sold | Bought | Filings | Pre-arranged (10b5-1) | Last filed |
|---|---|---|---|---|---|---|
| Sumedh S. Thakar | CEO & PRESIDENT | $14.1M | — | 13 | 100% of sales | |
| Joo Mi Kim | CHIEF FINANCIAL OFFICER | $6.3M | — | 11 | 100% of sales | |
| Bruce K. Posey | CHIEF LEGAL OFFICER | $2.2M | — | 13 | 100% of sales | |
| Wendy Pfeiffer | Director | $277.5K | — | 4 | 100% of sales | |
| Thomas Berquist | Director | $193.6K | — | 2 | 100% of sales | |
| Jeffrey P. Hank | Director | $103.2K | — | 1 | — |
| Filed | Insider | Type | Shares | Avg price | Value | Held after | Source |
|---|---|---|---|---|---|---|---|
traded | Bruce K. Posey CHIEF LEGAL OFFICER | SalePre-arranged (10b5-1) | 881 | $189.52 | $167.0K | 58,318 | |
traded | Sumedh S. Thakar CEO & PRESIDENT | SalePre-arranged (10b5-1) | 3,200 | $190.36 | $609.1K | 178,438 | |
traded | Bruce K. Posey CHIEF LEGAL OFFICER | SalePre-arranged (10b5-1) | 866 | $179.49 | $155.4K | 59,214 | |
traded | Sumedh S. Thakar CEO & PRESIDENT | SalePre-arranged (10b5-1) | 3,200 | $170.05 | $544.2K | 180,938 | |
traded | Thomas Berquist Director | SalePre-arranged (10b5-1) | 511 | $175.27 | $89.6K | 6,270 | |
traded | Joo Mi Kim CHIEF FINANCIAL OFFICER | SalePre-arranged (10b5-1) | 1,030 | $169.62 | $174.7K | 75,080 | |
traded | Bruce K. Posey CHIEF LEGAL OFFICER | SalePre-arranged (10b5-1) | 866 | $184.23 | $159.5K | 59,834 | |
traded | Wendy Pfeiffer Director | SalePre-arranged (10b5-1) | 500 | $185.00 | $92.5K | 11,710 | |
traded | Sumedh S. Thakar CEO & PRESIDENT | SalePre-arranged (10b5-1) | 3,200 | $188.97 | $604.7K | 185,538 | |
traded | Joo Mi Kim CHIEF FINANCIAL OFFICER | SalePre-arranged (10b5-1) | 1,627 | $153.04 | $249.0K | 76,970 | |
traded | Bruce K. Posey CHIEF LEGAL OFFICER | SalePre-arranged (10b5-1) | 882 | $158.17 | $139.5K | 62,689 | |
traded | Wendy Pfeiffer Director | SalePre-arranged (10b5-1) | 500 | $158.19 | $79.1K | 12,210 | |
traded | Sumedh S. Thakar CEO & PRESIDENT | SalePre-arranged (10b5-1) | 3,200 | $160.50 | $513.6K | 193,886 | |
traded | Bruce K. Posey CHIEF LEGAL OFFICER | SalePre-arranged (10b5-1) | 1,000 | $155.00 | $155.0K | 63,571 | |
traded | Joo Mi Kim CHIEF FINANCIAL OFFICER | SalePre-arranged (10b5-1) | 965 | $143.44 | $138.4K | 81,215 | |
traded | Sumedh S. Thakar CEO & PRESIDENT | SalePre-arranged (10b5-1) | 30,000 | $135.00 | $4.1M | 216,686 | |
traded | Sumedh S. Thakar CEO & PRESIDENT | SalePre-arranged (10b5-1) | 10,000 | $126.75 | $1.3M | 226,686 | |
traded | Sumedh S. Thakar CEO & PRESIDENT | SalePre-arranged (10b5-1) | 10,000 | $120.48 | $1.2M | 236,886 | |
traded | Bruce K. Posey CHIEF LEGAL OFFICER | SalePre-arranged (10b5-1) | 865 | $109.44 | $94.7K | 64,694 | |
traded | Wendy Pfeiffer Director | SalePre-arranged (10b5-1) | 500 | $110.55 | $55.3K | 12,710 | |
traded | Sumedh S. Thakar CEO & PRESIDENT | SalePre-arranged (10b5-1) | 3,200 | $114.80 | $367.4K | 249,686 | |
traded | Jeffrey P. Hank Director | Sale | 940 | $109.82 | $103.2K | 15,576 | |
traded | Thomas Berquist Director | SalePre-arranged (10b5-1) | 939 | $110.75 | $104.0K | 6,781 | |
traded | Joo Mi Kim CHIEF FINANCIAL OFFICER | SalePre-arranged (10b5-1) | 1,031 | $111.67 | $115.1K | 82,599 | |
traded | Sumedh S. Thakar CEO & PRESIDENT | SalePre-arranged (10b5-1) | 13,200 | $114.73 | $1.5M | 249,925 | |
traded | Wendy Pfeiffer Director | SalePre-arranged (10b5-1) | 500 | $101.21 | $50.6K | 10,582 | |
traded | Bruce K. Posey CHIEF LEGAL OFFICER | SalePre-arranged (10b5-1) | 3,249 | $100.25 | $325.7K | 65,436 | |
traded | Joo Mi Kim CHIEF FINANCIAL OFFICER | SalePre-arranged (10b5-1) | 1,627 | $100.17 | $163.0K | 83,211 | |
traded | Bruce K. Posey CHIEF LEGAL OFFICER | SalePre-arranged (10b5-1) | 65 | $100.09 | $6.5K | 70,955 | |
traded | Bruce K. Posey CHIEF LEGAL OFFICER | SalePre-arranged (10b5-1) | 100 | $100.18 | $10.0K | 71,020 | |
traded | Bruce K. Posey CHIEF LEGAL OFFICER | SalePre-arranged (10b5-1) | 481 | $103.85 | $49.9K | 71,216 | |
traded | Joo Mi Kim CHIEF FINANCIAL OFFICER | SalePre-arranged (10b5-1) | 6,799 | $128.46 | $873.4K | 92,337 | |
traded | Joo Mi Kim CHIEF FINANCIAL OFFICER | SalePre-arranged (10b5-1) | 3,414 | $135.63 | $463.0K | 88,489 | |
traded | Bruce K. Posey CHIEF LEGAL OFFICER | SalePre-arranged (10b5-1) | 1,101 | $132.34 | $145.7K | 68,744 | |
traded | Sumedh S. Thakar CEO & PRESIDENT | SalePre-arranged (10b5-1) | 5,000 | $133.76 | $668.8K | 252,400 | |
traded | Joo Mi Kim CHIEF FINANCIAL OFFICER | SalePre-arranged (10b5-1) | 4,753 | $130.77 | $621.5K | 94,672 | |
traded | Bruce K. Posey CHIEF LEGAL OFFICER | SalePre-arranged (10b5-1) | 1,077 | $142.46 | $153.4K | 70,531 | |
traded | Sumedh S. Thakar CEO & PRESIDENT | SalePre-arranged (10b5-1) | 8,500 | $147.12 | $1.3M | 253,600 | |
traded | Joo Mi Kim CHIEF FINANCIAL OFFICER | SalePre-arranged (10b5-1) | 8,649 | $149.81 | $1.3M | 103,578 | |
traded | Bruce K. Posey CHIEF LEGAL OFFICER | SalePre-arranged (10b5-1) | 4,077 | $146.98 | $599.2K | 70,776 | |
traded | Joo Mi Kim CHIEF FINANCIAL OFFICER | SalePre-arranged (10b5-1) | 7,506 | $146.59 | $1.1M | 114,980 | |
traded | Joo Mi Kim CHIEF FINANCIAL OFFICER | SalePre-arranged (10b5-1) | 7,694 | $141.95 | $1.1M | 121,074 | |
traded | Sumedh S. Thakar CEO & PRESIDENT | SalePre-arranged (10b5-1) | 8,500 | $142.68 | $1.2M | 261,878 | |
traded | Sumedh S. Thakar CEO & PRESIDENT | SalePre-arranged (10b5-1) | 2,200 | $155.04 | $341.1K | 256,800 |
GET /stocks/filings/vX/form-4?tickers=QLYS&filing_date.gte=2025-10-26&sort=filing_date.desc&limit=500{
"status": "OK",
"results": [
{
"tickers": [
"QLYS"
],
"issuer_cik": "0001107843",
"owner_cik": "0001254781",
"accession_number": "0001254781-26-000028",
"form_type": "4",
"filing_date": "2026-10-21",
"period_of_report": "2026-10-20",
"issuer_name": "QUALYS, INC.",
"issuer_trading_symbol": "QLYS",
"owner_name": "POSEY BRUCE K",
"is_director": false,
"is_officer": true,
"is_ten_percent_owner": false,
"is_other": false,
"officer_title": "CHIEF LEGAL OFFICER",
"security_type": "non_derivative",
"record_type": "transaction",
"security_title": "Common Stock",
"transaction_timeliness": "O",
"aff_10b5_one": true,
"transaction_date": "2026-10-20",
"transaction_code": "S",
"equity_swap_involved": false,
"transaction_shares": 449,
"transaction_price_per_share": 190.4867,
"transaction_acquired_disposed": "D",
"shares_owned_following_transaction": 57869,
"transaction_value": 85528.5283,
"direct_or_indirect": "D",
"footnotes": [
{
"id": "F1",
"description": "The sale transaction reported in this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on August 21, 2025."
},
{
"id": "F5",
"description": "The sale price represents the weighted average price of the shares sold ranging from $189.90 to $190.88 per share. Upon request by the Commission staff, the Issuer or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price within the range set forth in this Form 4."
}
]
},
{
"tickers": [
"QLYS"
],
"issuer_cik": "0001107843",
"owner_cik": "0001254781",
"accession_number": "0001254781-26-000028",
"form_type": "4",
"filing_date": "2026-10-21",
"period_of_report": "2026-10-20",
"issuer_name": "QUALYS, INC.",
"issuer_trading_symbol": "QLYS",
"owner_name": "POSEY BRUCE K",
"is_director": false,
"is_officer": true,
"is_ten_percent_owner": false,
"is_other": false,
"officer_title": "CHIEF LEGAL OFFICER",
"security_type": "non_derivative",
"record_type": "transaction",
"security_title": "Common Stock",
"transaction_timeliness": "O",
"aff_10b5_one": true,
"transaction_date": "2026-10-20",
"transaction_code": "S",
"equity_swap_involved": false,
"transaction_shares": 7,
"transaction_price_per_share": 185.31,
"transaction_acquired_disposed": "D",
"shares_owned_following_transaction": 58597,
"transaction_value": 1297.17,
"direct_or_indirect": "D",
"footnotes": [
{
"id": "F1",
"description": "The sale transaction reported in this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on August 21, 2025."
}
]
}
]
}
// trimmed to 2 resultsThe response includes every Form 4 record; this page keeps open-market purchases and sales on common stock and removes duplicate joint-filer rows.
Other insider activity (not market trades) · 48 records
- Option exercises2 records
- Tax withholding24 records
- Grants and awards22 records
Reported on Form 4 but not purchases or sales in the market, so not counted in the totals above.
How to read this page
- Open-market purchase or sale
- A buy or sell of the company's stock at market price. Grants, option exercises, shares withheld for tax, gifts and employee stock plan purchases are listed separately and not counted.
- Pre-arranged (10b5-1)
- The insider marked the filing as made under a trading plan set up in advance (SEC Rule 10b5-1). The mark covers the whole filing, and an unmarked filing may still be under a plan.
- Filing date
- Insiders have two business days to report a trade. Totals and the chart use the filing date, when the trade became public.
Frequently asked questions
Has Qualys, Inc.'s CEO sold stock?
Yes. Sumedh S. Thakar (CEO) sold 103,400 shares ($14.1M) between Nov 2025 and Oct 2026, all under a pre-arranged 10b5-1 plan.
How current is QLYS’s insider data?
These are QLYS Form 4 filings from the last year, refreshed daily. The Massive Form 4 API has the full, continuously updated record.
What counts as an open-market buy or sell?
Only purchases and sales at the market price. Option exercises, grants, gifts, and shares withheld for taxes are reported on Form 4 but are left out of the buy and sell totals.
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Track QLYS insider trades with your agent
This page joins two Massive endpoints: Form 4 filings and daily prices. Ask an agent to watch for new filings:
Using the Massive API (massive.com/docs/llms.txt), check Form 4 filings for QLYS every day with transaction_code=P and tell me when an insider files an open-market purchase, with their role, shares, price and the filing link.
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