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Person · CIK 1786612

Wendy Pfeiffer

Director at Qualys

Source: Forms 3, 4, 5 and 144 on SEC EDGAR

Sold on Form 4$918K
Noticed on Form 144$846K
Bought on Form 4$0
Companies1

Holdings now

As reported after the latest Form 3, 4 or 5 at each company.

How these figures work

Options and RSUs are from the latest filing that lists them; earlier grants may also be held. Holdings can be out of date when a person stops filing.

CompanySecurityHeldShares or unitsAs of
Qualys QLYSCommon StockDirectly11,710Aug 20, 2026 · Filing · EDGAR

Sold and noticed by quarter

Wendy Pfeiffer: dollars sold on Form 4 and noticed on Form 144 per quarter, Q4 2023 to Q4 2026$293K$0Q4 2023: $268K noticed on Form 144Q4 2023: $268K sold on Form 4Q1 2024: $0 noticed on Form 144Q1 2024: $0 sold on Form 4Q2 2024: $293K noticed on Form 144Q2 2024: $291K sold on Form 4Q3 2024: $0 noticed on Form 144Q3 2024: $0 sold on Form 4Q4 2024: $0 noticed on Form 144Q4 2024: $0 sold on Form 4Q1 2025: $0 noticed on Form 144Q1 2025: $0 sold on Form 4Q2 2025: $84K noticed on Form 144Q2 2025: $28K sold on Form 4Q3 2025: $0 noticed on Form 144Q3 2025: $54K sold on Form 4Q4 2025: $0 noticed on Form 144Q4 2025: $0 sold on Form 4Q1 2026: $0 noticed on Form 144Q1 2026: $0 sold on Form 4Q2 2026: $202K noticed on Form 144Q2 2026: $106K sold on Form 4Q3 2026: $0 noticed on Form 144Q3 2026: $172K sold on Form 4Q4 2026: $0 noticed on Form 144Q4 2026: $0 sold on Form 4Q4 2023Q3 2024Q2 2025Q1 2026Q4 2026

Sold (Form 4) Noticed (Form 144) Bought (Form 4)

Quarterly totals as a table
QuarterSold (Form 4)Noticed (Form 144)
Q3 2026$172K—
Q2 2026$106K$202K
Q3 2025$54K—
Q2 2025$28K$84K
Q2 2024$291K$293K
Q4 2023$268K$268K

Planned sales (Form 144) and the sales that followed

Each Form 144 notice of a planned sale, grouped by broker and 10b5-1 plan, with the Form 4 sales we matched to it.

How we match

A Form 144 is a notice of a planned sale by an affiliate. SEC Tracker matches each notice to Form 4 sales by the same person at the same company within 90 days of the notice, up to the shares noticed. The match is our inference, not something either filing states.

Notice dateNoticedPlanned saleOutcomeLinks
Qualys QLYS · Morgan Stanley Smith Barney · 10b5-1 plan adopted Feb 20, 2026 · 1 notice
May 22, 20262,000 · ~$202KMay 22, 2026Sold as noticed Sold 2,000 in 4 sales, May 22 to Aug 20 · $277K Form 4 (1) · Form 4 (2) · Form 4 (3) · Form 4 (4)Filing · EDGAR
Qualys QLYS · Morgan Stanley Smith Barney · 10b5-1 plan adopted Feb 21, 2025 · 1 notice
Jun 13, 2025600 · ~$84KJun 13, 2025Sold as noticed Sold 600 in 3 sales, Jun 13 to Aug 15 · $82K Form 4 (1) · Form 4 (2) · Form 4 (3)Filing · EDGAR
Qualys QLYS · Morgan Stanley Smith Barney · 10b5-1 plan adopted Feb 23, 2024 · 1 notice
May 24, 20242,000 · ~$293KMay 24, 2024Sold as noticed Sold 2,000 in 2 sales, May 24 to May 24 · $291K Form 4Filing · EDGAR
Qualys QLYS · Morgan Stanley Smith Barney · 10b5-1 plan adopted Aug 31, 2023 · 1 notice
Dec 4, 20231,430 · ~$268KDec 4, 2023Sold as noticed Sold 1,430 in 2 sales, Dec 4 to Dec 4 · $268K Form 4Filing · EDGAR

Every transaction, by company

Each Form 3, 4 and 5 transaction in plain words, newest first.

How these figures work

Values are shares times the price each filing states; grants, exercises and gifts usually state no price. Held after is what the filing reports was held once the transaction was done, directly or through the named holder.

Qualys QLYS Director · filings 2019 to 2026 · sold $918K · $846K noticed on Form 144

DateTransactionSharesPriceValueHeld afterSource
Aug 20, 2026Sale under a 10b5-1 plan−500$185.00$93K11,710 directFiling · EDGAR
Jul 20, 2026Sale under a 10b5-1 plan−500$158.19$79K12,210 directFiling · EDGAR
Jun 22, 2026Sale under a 10b5-1 plan−500$110.55$55K12,710 directFiling · EDGAR
Jun 10, 2026Grant or award from the company+2,62813,210 directFiling · EDGAR
May 22, 2026Sale under a 10b5-1 plan−500$101.21$51K10,582 directFiling · EDGAR
Aug 15, 2025Sale under a 10b5-1 plan−200$129.72$26K11,082 directFiling · EDGAR
Jul 15, 2025Sale under a 10b5-1 plan−200$139.45$28K11,282 directFiling · EDGAR
Jun 13, 2025Sale under a 10b5-1 plan−200$138.78$28K11,482 directFiling · EDGAR
Jun 11, 2025Grant or award from the company+1,87911,682 directFiling · EDGAR
Jun 12, 2024Grant or award from the company+1,3139,803 directFiling · EDGAR
May 24, 2024Sale under a 10b5-1 plan−1,143$145.22$166K9,347 directFiling · EDGAR
May 24, 2024Sale under a 10b5-1 plan−857$146.38$125K8,490 directFiling · EDGAR
Dec 4, 2023Sale under a 10b5-1 plan−990$186.91$185K10,930 directFiling · EDGAR
Dec 4, 2023Sale under a 10b5-1 plan−440$187.81$83K10,490 directFiling · EDGAR
Jun 7, 2023Grant or award from the company+1,70011,920 directFiling · EDGAR
Jun 8, 2022Grant or award from the company+1,55610,220 directFiling · EDGAR
Jun 9, 2021Grant or award from the company+2,0028,664 directFiling · EDGAR
Jun 10, 2020Grant or award from the company+1,8466,662 directFiling · EDGAR
Aug 16, 2019Grant or award from the company+4,8164,816 directFiling · EDGAR
All 22 Forms 3, 4, 5 and 144
FiledFormCompanyLinks
Aug 21, 2026Form 4Qualys QLYSFiling · EDGAR
Jul 21, 2026Form 4Qualys QLYSFiling · EDGAR
Jun 23, 2026Form 4Qualys QLYSFiling · EDGAR
Jun 11, 2026Form 4Qualys QLYSFiling · EDGAR
May 26, 2026Form 4Qualys QLYSFiling · EDGAR
May 22, 2026Form 144Qualys QLYSFiling · EDGAR
Aug 18, 2025Form 4Qualys QLYSFiling · EDGAR
Jul 15, 2025Form 4Qualys QLYSFiling · EDGAR
Jun 16, 2025Form 4Qualys QLYSFiling · EDGAR
Jun 13, 2025Form 144Qualys QLYSFiling · EDGAR
Jun 13, 2025Form 4Qualys QLYSFiling · EDGAR
Jun 14, 2024Form 4Qualys QLYSFiling · EDGAR
May 28, 2024Form 4Qualys QLYSFiling · EDGAR
May 24, 2024Form 144Qualys QLYSFiling · EDGAR
Dec 5, 2023Form 4Qualys QLYSFiling · EDGAR
Dec 4, 2023Form 144Qualys QLYSFiling · EDGAR
Jun 9, 2023Form 4Qualys QLYSFiling · EDGAR
Jun 10, 2022Form 4Qualys QLYSFiling · EDGAR
Jun 11, 2021Form 4Qualys QLYSFiling · EDGAR
Jun 11, 2020Form 4Qualys QLYSFiling · EDGAR
Aug 27, 2019Form 4Qualys QLYSFiling · EDGAR
Aug 27, 2019Form 3Qualys QLYSFiling · EDGAR

Every figure is as filed with the SEC on Forms 3, 4, 5 and 144. Holdings are the amounts reported after each person's latest filing at each company and can be out of date. Matching a Form 144 notice to Form 4 sales is SEC Tracker's inference from owner, company, dates and share counts, not something the filings state. Not investment advice. Not affiliated with the U.S. SEC.