Thomas Berquist - SEC Form 4 Insider Trading Activity
Summary
Updated Aug 3, 2026
Thomas Berquist has filed 2 SEC Form 4 filings across 1 company in the last 90 days - selling. Lifetime open-market sales: $263K.
Profile
Thomas Berquist is a corporate insider at QUALYS, INC. (QLYS). Berquist has reported 5 insider filings with the SEC since 2025. The most recent filing was in June 2026.
| Role | Insider |
|---|---|
| Notability | 20/100 |
Board memberships
- QUALYS, INC.
Trading Pattern
InsiderAlpha's records for Thomas Berquist go back to 2025: 5 primary Form 4 filings, an average of 2.5 per year. 1 recorded transaction carries a Rule 10b5-1 flag, meaning it was pre-scheduled under a written trading plan rather than discretionary.
Career & Filing History
Every role Thomas Berquist has reported on a Form 4, reconstructed from the filings themselves - reporting insiders must state their relationship to the issuer (officer title, director seat, or 10% ownership) on every filing.
- Insider at QUALYS, INC. (QLYS) - 5 filings, 2025 to 2026
Recent Transactions
| Date | Ticker | Company | Code | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 2026-06-15 | QLYS | QUALYS, INC. | S - Open-market sale [10b5-1] | 939 | $110.75 | $104K |
| 2026-06-11 | QLYS | QUALYS, INC. | A - Grant or award | 2.6K | $0.00 | |
| 2025-09-02 | QLYS | QUALYS, INC. | S - Open-market sale | 37 | $133.93 | $5K |
| 2025-09-02 | QLYS | QUALYS, INC. | S - Open-market sale | 325 | $133.41 | $43K |
| 2025-09-02 | QLYS | QUALYS, INC. | S - Open-market sale | 150 | $132.18 | $20K |
| 2025-06-13 | QLYS | QUALYS, INC. | S - Open-market sale | 656 | $138.78 | $91K |
| 2025-06-11 | QLYS | QUALYS, INC. | A - Grant or award | 1.9K | $0.00 |
Companies - Last 90 Days
- QUALYS, INC. (QLYS) - 2 filings, last 2026-06-15
Other Insiders Active in the Same Stocks
Insiders who reported open-market trades at the companies Thomas Berquist has recently filed at. Multiple unrelated insiders buying the same stock within a short window - cluster buying - has historically been one of the strongest Form 4 signals.
- Sumedh S. Thakar - $15.70M of QLYS open-market activity in the last 12 months
- Joo Mi Kim - $4.30M of QLYS open-market activity in the last 12 months
- Bruce K. Posey - $1.74M of QLYS open-market activity in the last 12 months
- John A. Zangardi - $1.11M of QLYS open-market activity in the last 12 months
- Kristi Marie Rogers - $229K of QLYS open-market activity in the last 12 months
- Wendy Pfeiffer - $211K of QLYS open-market activity in the last 12 months
More Notable Insiders
Other corporate insiders with significant SEC Form 4 track records on InsiderAlpha:
- Motor Corp/ Toyota
- TPG GP A, LLC
- Chrysler Retirees Medical Benefits Plan Uaw
- Uber Technologies, Inc
- UNIVERSITY OF TEXAS/TEXAS AM INVESTMENT MANAGEMENT CO
- VAN ECK ASSOCIATES CORP
- Weegen Felice Isabel Verduyn-Van
- Viking Cake BR, LLC
Frequently Asked Questions
Who is Thomas Berquist?
Thomas Berquist is a corporate insider at QUALYS, INC. (QLYS). Berquist has reported 5 insider filings with the SEC since 2025. The most recent filing was in June 2026.…
How many SEC Form 4 filings has Thomas Berquist submitted recently?
2 primary Form 4 filings in the last 90 days, covering 1 company.
Has Thomas Berquist been buying or selling stock?
Recorded transactions: 0 open-market purchases and 5 open-market sales ($263K) across all tracked filings.
Where can I see all of Thomas Berquist's SEC filings?
All Form 4 filings, transaction values, and 10b5-1 plan flags are listed on this page and updated in real time as new SEC EDGAR filings are processed.
Learn More
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