PDF SOLUTIONS INC (PDFS)
Data as of , from SEC Form 4 filings.
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Andrzej Strojwas - OfficerOpen-market sale$151K
Shuo Zhang - DirectorOpen-market sale$77K
About PDF SOLUTIONS INC (PDFS)
PDF Solutions Inc provides products and services designed to empower organizations across the semiconductor and electronics ecosystem to connect, collect, manage, and analyze data about design, equipment, manufacturing, and test to improve the yield and quality of their products and operational efficiency. The Company's products, services, and solutions include proprietary software, physical intellectual property (IP) for integrated circuit (IC) designs, electrical measurement hardware tools, methodologies, and professional services.
- SANTA CLARA, CA
- 600
- 2001
- XNAS
PDFS Form 4 activity by transaction type, last 90 days
| Form 4 transaction type | Transactions | Shares | Total value |
|---|---|---|---|
| Open-market sale | 2 | 4,895 | $228K |
PDFS insider transactions (Form 4)
2825 Form 4 filings on record, the earliest from Dec 12, 2024, newest first.
| Date | Insider | Transaction | Security | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Andrzej Strojwas - Officer | Open-market sale | Common Stock | 3,394 | $44.41 footnote F1 | $151K | |
| ||||||
| Shuo Zhang - Director | Open-market sale | Common Stock | 1,501 | $51.47 | $77K | |
| Andrzej Strojwas - Officer | Tax withholding / forfeiture | Common Stock | 1,356 footnote F1 | $66.88 footnote F1 | $91K | |
| Andrzej Strojwas - Officer | Grant or award | Common Stock | 5,360 footnote F3 | - footnote F3 | - | |
| ||||||
| Shuo Zhang - Director | Grant or award | Common Stock | 2,689 footnote F1 | - footnote F1 | - | |
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 Michael B. Gustafson - Director | Grant or award | Common Stock | 2,689 footnote F1 | - footnote F1 | - | |
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| Chi-Foon Chan - Director | Grant or award | Common Stock | 2,689 footnote F1 | - footnote F1 | - | |
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 Joseph R. Bronson - Director | Grant or award | Common Stock | 2,689 footnote F1 | - footnote F1 | - | |
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 Ye Jane Li - Director | Grant or award | Common Stock | 2,689 footnote F1 | - footnote F1 | - | |
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| Nancy Erba - Director | Grant or award | Common Stock | 2,689 footnote F1 | - footnote F1 | - | |
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| Adnan Raza - Officer | Tax withholding / forfeiture | Common Stock | 6,010 footnote F1 | $66.88 footnote F1 | $402K | |
| Adnan Raza - Officer | Grant or award | Common Stock | 23,450 footnote F2 | - footnote F2 | - | |
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| Adnan Raza - Officer | Grant or award | Common Stock | 35,000 | - | - | |
| Andrzej Strojwas - Officer | Grant or award | Common Stock | 8,000 | - | - | |
 Kimon Michaels - Officer | Tax withholding / forfeiture | Common Stock | 798 | $21.87 | $17K | |
| Adnan Raza - Officer | Tax withholding / forfeiture | Common Stock | 4,921 | $21.87 | $108K | |
| Joseph R. Bronson - Director | Grant or award | Common Stock | 7,429 | - | - | |
| Andrzej Strojwas - Officer | Tax withholding / forfeiture | Common Stock | 2,497 | $21.87 | $55K | |
| Chi-Foon Chan - Director | Grant or award | Common Stock | 7,429 | - | - | |
| Nancy Erba - Director | Grant or award | Common Stock | 7,429 | - | - | |
| Michael B. Gustafson - Director | Grant or award | Common Stock | 7,429 | - | - | |
| Ye Jane Li - Director | Grant or award | Common Stock | 7,429 | - | - | |
| Shuo Zhang - Director | Grant or award | Common Stock | 7,429 | - | - | |
| Michael B. Gustafson | Open-market purchase | Common Stock | 7,500 | $19.45 | $146K | |
| Andrzej Strojwas - Officer | Open-market sale | Common Stock | 245 | $31.17 | $8K | |
| Andrzej Strojwas - Officer | Open-market sale | Common Stock | 6,008 | $30.36 | $182K | |
| Andrzej Strojwas - Officer | Open-market sale | Common Stock | 5,030 | $30.85 | $155K | |
| Nancy Erba | Open-market sale | Common Stock | 2,000 | $30.81 | $62K | |
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Recent PDFS Form 144 notices of proposed sale
2An insider files Form 144 before selling restricted or control stock. It announces a planned sale. If the sale goes ahead, it shows up later on a Form 4.
| Filed | Filer | Relationship | Shares | Market value | Notice |
|---|---|---|---|---|---|
| ANDRZEJ STROJWAS | Officer | 3,394 | $151K | View on EDGAR | |
| SHUO ZHANG | Director | 1,501 | $77K |
PDFS insider trading FAQ
What is the latest insider trade for PDFS?
PDF SOLUTIONS INC (PDFS) had 2 insider filings in the last 90 days, with the most recent on 2026-09-01. The full record for PDFS runs to 25 Form 4 filings, the earliest from 2024-12-12. InsiderAlpha adds new Form 4, Form 144 and 8-K filings as they arrive from SEC EDGAR.
How many insiders are buying PDFS stock?
No insider purchases of PDFS were filed in the last 90 days. 1 purchase is on record for this company.
How many insiders are selling PDFS stock?
2 insider sales of PDFS were filed in the last 90 days, totaling $228K.
Where can I see PDFS SEC filings (Form 4, 10-K, 10-Q, 8-K)?
This page collects PDFS Form 4 insider transactions, Form 144 sale notices and 8-K filings in one place. Annual 10-K and quarterly 10-Q reports live on the company's SEC EDGAR page.
More Information Technology companies with insider activity
Recent insider filings
10The EDGAR links open each original Form 4, so you can check any number on this page against the filing it came from.
- - Andrzej Strojwas view on EDGAR
- - Shuo Zhang view on EDGAR
- - Andrzej Strojwas view on EDGAR
- - Shuo Zhang view on EDGAR
- - Michael B. Gustafson view on EDGAR
- - Chi-Foon Chan view on EDGAR
- - Joseph R. Bronson view on EDGAR
- - Ye Jane Li view on EDGAR
- - Nancy Erba view on EDGAR
Related companies with recent insider activity
Learn more
- Insider selling: signal or noise?
- Why most insider sales are routine, and the few patterns worth a second look.
- Form 144 vs Form 4
- A Form 144 announces a planned sale; the Form 4 reports it after it happens.
- Insider activity in Information Technology
- Where PDFS's peers are being bought and sold.
- Every recent Form 4
- The market-wide feed, updated as filings arrive from SEC EDGAR.
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