PDFS insider transaction filings
PDF SOLUTIONS INC — 50 most recent Form 4 filings from SEC EDGAR, normalized by FilingPulse. Latest filing: 2026-09-01. Screen PDFS transaction legs live →
Insider transaction summary — last 90 days
2026-06-24 to 2026-09-22, from the filings listed below: 10 Form 4 filings. Counts and totals are arithmetic on values as filed — descriptive data, not a recommendation.
- Open-market purchases (code P, non-derivative): none reported.
- Open-market sales (code S, non-derivative): 2 legs across 2 filings by 2 insiders — 4,895 shares, $227,984 total (shares × price as filed).
- Other reported legs (grants, option exercises, tax withholding, gifts, derivative-security transactions, …): 10.
- Largest priced transaction: sale of 3,394 shares @ $44.41 ($150,728) by Strojwas Andrzej, filed 2026-09-01.
By insider — same window
Open-market purchase/sale legs on non-derivative securities, grouped by the filing's reporting owner(s); joint filings appear once. Dollar totals cover priced legs only (shares × price as filed). Ordered by priced transaction value, largest first.
| Insider | Filings | Purchases (P) | Sales (S) | Other legs |
|---|---|---|---|---|
| Strojwas Andrzej — Chief Technology Officer | 2 | — | 1 leg · 3,394 sh · $150,728 | 2 |
| Zhang Shuo — Director | 2 | — | 1 leg · 1,501 sh · $77,256 | 1 |
| Raza Adnan — EVP, Finance and CFO | 1 | — | — | 2 |
| BRONSON JOSEPH R — Director | 1 | — | — | 1 |
| CHAN CHI-FOON — Director | 1 | — | — | 1 |
| Erba Nancy — Director | 1 | — | — | 1 |
| GUSTAFSON MICHAEL B — Director | 1 | — | — | 1 |
| Li Ye Jane — Director | 1 | — | — | 1 |
Recent Form 4 filings — PDF SOLUTIONS INC
| Filed | Form | Insider | Reported transactions | Source |
|---|---|---|---|---|
| 2026-09-01 | 4 | Strojwas Andrzej — Chief Technology Officer | Sale (S): 3,394 @ $44.41 | EDGAR |
| 2026-08-12 | 4 | Zhang Shuo — Director | Sale (S): 1,501 @ $51.47 | EDGAR |
| 2026-07-02 | 4 | Strojwas Andrzej — Chief Technology Officer | Tax withholding (F): 1,356 @ $66.88 · Grant/award (A): 5,360 | EDGAR |
| 2026-07-02 | 4 | Zhang Shuo — Director | Grant/award (A): 2,689 | EDGAR |
| 2026-07-02 | 4 | GUSTAFSON MICHAEL B — Director | Grant/award (A): 2,689 | EDGAR |
| 2026-07-02 | 4 | CHAN CHI-FOON — Director | Grant/award (A): 2,689 | EDGAR |
| 2026-07-02 | 4 | BRONSON JOSEPH R — Director | Grant/award (A): 2,689 | EDGAR |
| 2026-07-02 | 4 | Li Ye Jane — Director | Grant/award (A): 2,689 | EDGAR |
| 2026-07-02 | 4 | Erba Nancy — Director | Grant/award (A): 2,689 | EDGAR |
| 2026-07-02 | 4 | Raza Adnan — EVP, Finance and CFO | Tax withholding (F): 6,010 @ $66.88 · Grant/award (A): 23,450 | EDGAR |
| 2026-01-05 | 4 | Strojwas Andrzej — Chief Technology Officer | Tax withholding (F): 2,762 @ $28.53 | EDGAR |
| 2026-01-05 | 4 | Raza Adnan — EVP, Finance and CFO | Tax withholding (F): 5,498 @ $28.53 | EDGAR |
| 2025-12-11 | 4 | MICHAELS KIMON — EVP of Products and Solutions, Director | Gift (G): 5,070 @ $0 | EDGAR |
| 2025-08-04 | 4 | Raza Adnan — EVP, Finance and CFO | Grant/award (A): 35,000 | EDGAR |
| 2025-08-04 | 4 | Strojwas Andrzej — Chief Technology Officer | Grant/award (A): 8,000 | EDGAR |
| 2025-07-03 | 4 | MICHAELS KIMON — EVP of Products and Solutions, Director | Tax withholding (F): 798 @ $21.87 | EDGAR |
| 2025-07-03 | 4 | Raza Adnan — EVP, Finance and CFO | Tax withholding (F): 4,921 @ $21.87 | EDGAR |
| 2025-07-03 | 4 | Strojwas Andrzej — Chief Technology Officer | Tax withholding (F): 2,497 @ $21.87 | EDGAR |
| 2025-07-02 | 4 | BRONSON JOSEPH R — Director | Grant/award (A): 7,429 | EDGAR |
| 2025-07-02 | 4 | CHAN CHI-FOON — Director | Grant/award (A): 7,429 | EDGAR |
| 2025-07-02 | 4 | Erba Nancy — Director | Grant/award (A): 7,429 | EDGAR |
| 2025-07-02 | 4 | GUSTAFSON MICHAEL B — Director | Grant/award (A): 7,429 | EDGAR |
| 2025-07-02 | 4 | Li Ye Jane — Director | Grant/award (A): 7,429 | EDGAR |
| 2025-07-02 | 4 | Zhang Shuo — Director | Grant/award (A): 7,429 | EDGAR |
| 2025-05-14 | 4 | GUSTAFSON MICHAEL B — Director | Purchase (P): 7,500 @ $19.45 | EDGAR |
| 2025-02-25 | 4 | GUSTAFSON MICHAEL B — Director | Purchase (P): 4,000 @ $23.06 | EDGAR |
| 2025-02-25 | 4 | KIBARIAN JOHN KACHIG — PRESIDENT AND CEO, Director | Purchase (P): 34,356 @ $22.80 · Purchase (P): 15,644 @ $22.11 | EDGAR |
| 2025-01-03 | 4 | MICHAELS KIMON — EVP OF PRODUCTS AND SOLUTIONS, Director | Tax withholding (F): 870 | EDGAR |
| 2025-01-03 | 4 | Raza Adnan — EVP, FINANCE AND CFO | Tax withholding (F): 5,258 | EDGAR |
| 2025-01-03 | 4 | Strojwas Andrzej — CTO | Tax withholding (F): 2,833 | EDGAR |
| 2024-12-19 | 4 | Strojwas Andrzej — CTO | Sale (S): 245 @ $31.17 · Sale (S): 6,008 @ $30.36 | EDGAR |
| 2024-12-17 | 4 | Strojwas Andrzej — CTO | Sale (S): 5,030 @ $30.85 | EDGAR |
| 2024-12-12 | 4 | Erba Nancy — Director | Sale (S): 2,000 @ $30.81 | EDGAR |
| 2024-08-02 | 4 | MICHAELS KIMON — EVP OF PRODUCTS AND SOLUTIONS, Director | Tax withholding (F): 22 @ $33.13 | EDGAR |
| 2024-08-02 | 4 | Strojwas Andrzej — CTO | Tax withholding (F): 357 @ $33.13 | EDGAR |
| 2024-07-03 | 4 | Erba Nancy — Director | Grant/award (A): 4,382 | EDGAR |
| 2024-07-03 | 4 | Li Ye Jane — Director | Grant/award (A): 4,382 | EDGAR |
| 2024-07-02 | 4 | Raza Adnan — EVP, FINANCE AND CFO | Grant/award (A): 30,000 · Tax withholding (F): 4,948 @ $35.74 | EDGAR |
| 2024-07-02 | 4 | Strojwas Andrzej — CTO | Grant/award (A): 10,000 · Tax withholding (F): 2,680 @ $35.74 | EDGAR |
| 2024-07-02 | 4 | MICHAELS KIMON — EVP OF PRODUCTS AND SOLUTIONS, Director | Grant/award (A): 2,400 · Tax withholding (F): 657 @ $35.74 | EDGAR |
| 2024-07-02 | 4 | Zhang Shuo — Director | Grant/award (A): 4,382 | EDGAR |
| 2024-07-02 | 4 | GUSTAFSON MICHAEL B — Director | Grant/award (A): 4,382 | EDGAR |
| 2024-07-02 | 4 | BRONSON JOSEPH R — Director | Grant/award (A): 4,382 | EDGAR |
| 2024-07-02 | 4 | CHAN CHI-FOON — Director | Grant/award (A): 4,382 | EDGAR |
| 2024-06-04 | 4 | Zhang Shuo — Director | Sale (S): 5,500 @ $34.66 | EDGAR |
| 2024-05-17 | 4 | Raza Adnan — EVP, FINANCE AND CFO | Sale (S): 1,343 @ $34.52 · Sale (S): 16,504 @ $33.82 · Sale (S): 9,647 @ $33.95 | EDGAR |
| 2024-02-26 | 4 | Li Ye Jane — Director | Sale (S): 1,531 @ $34 · Sale (S): 9,653 @ $33.27 | EDGAR |
| 2024-02-22 | 4 | BRONSON JOSEPH R — Director | Sale (S): 15,000 @ $34.63 | EDGAR |
| 2024-02-02 | 4 | Strojwas Andrzej — CTO | Tax withholding (F): 357 @ $31.69 | EDGAR |
| 2024-02-02 | 4 | MICHAELS KIMON — EVP OF PRODUCTS AND SOLUTIONS, Director | Tax withholding (F): 25 @ $31.69 | EDGAR |
Recent 8-K events — PDF SOLUTIONS INC
| Filed | Form | Items reported | Source |
|---|---|---|---|
| 2026-08-06 | 8-K | 2.02 — Results of Operations and Financial Condition 9.01 — Financial Statements and Exhibits | EDGAR |
| 2026-06-18 | 8-K | 5.07 — Submission of Matters to a Vote of Security Holders 9.01 — Financial Statements and Exhibits | EDGAR |
| 2026-05-15 | 8-K | 8.01 — Other Events 9.01 — Financial Statements and Exhibits | EDGAR |
| 2026-05-07 | 8-K | 2.02 — Results of Operations and Financial Condition 9.01 — Financial Statements and Exhibits | EDGAR |
| 2026-04-24 | 8-K | 1.01 — Entry into a Material Definitive Agreement 2.03 — Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant 9.01 — Financial Statements and Exhibits | EDGAR |
| 2026-02-12 | 8-K | 2.02 — Results of Operations and Financial Condition 9.01 — Financial Statements and Exhibits | EDGAR |
| 2025-11-13 | 8-K | 7.01 — Regulation FD Disclosure | EDGAR |
| 2025-11-06 | 8-K | 2.02 — Results of Operations and Financial Condition 9.01 — Financial Statements and Exhibits | EDGAR |
| 2025-08-07 | 8-K | 2.02 — Results of Operations and Financial Condition 9.01 — Financial Statements and Exhibits | EDGAR |
| 2025-06-23 | 8-K | 5.07 — Submission of Matters to a Vote of Security Holders 9.01 — Financial Statements and Exhibits | EDGAR |
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