Across the past 12 months, open-market trades by PDF Solutions insiders were all sales, totaling $227,984 (4.89K shares).
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | John Kachig Kibarian | President And Ceo | 0 | 2,522,756 | 2,522,756 | 56.8% | 25 Feb, 2025 |
| 2 | Kimon Michaels | Evp Of Products And Solutions | 0 | 1,542,072 | 1,542,072 | 34.7% | 11 Dec, 2025 |
| 3 | Andrzej Strojwas | Chief Technology Officer | 90,965 | 0 | 90,965 | 2.0% | 01 Sep, 2026 |
| 4 | Adnan Raza | Evp, Finance And Cfo | 80,697 | 0 | 80,697 | 1.8% | 02 Jul, 2026 |
| 5 | Joseph R Bronson | Director | 40,956 | 0 | 40,956 | 0.9% | 02 Jul, 2026 |
| 6 | Michael B Gustafson | Director | 40,192 | 0 | 40,192 | 0.9% | 02 Jul, 2026 |
| 7 | Marco Iansiti | Director | 39,465 | 0 | 39,465 | 0.9% | 05 Jul, 2022 |
| 8 | Ye Jane Li | Director | 26,632 | 0 | 26,632 | 0.6% | 02 Jul, 2026 |
| 9 | Chi-Foon Chan | Director | 24,168 | 0 | 24,168 | 0.5% | 02 Jul, 2026 |
| 10 | Shuo Zhang | Director | 23,380 | 0 | 23,380 | 0.5% | 12 Aug, 2026 |
| 11 | Nancy Erba | Director | 11,943 | 0 | 11,943 | 0.3% | 02 Jul, 2026 |
Each row is that insider’s most recently reported position, from Form 4 filings over the last 60 months — which is why this total does not tie to the quarterly series above, where a quarter counts only the insiders who filed in it. Shares held through a fund or institutional portfolio are counted on the institutional ownership page instead.
| Date | Insider | Position | Transaction | Shares | Price | Value | Shares Held After | Ownership |
|---|---|---|---|---|---|---|---|---|
| 31 Aug, 2026 | Andrzej Strojwas | Chief Technology Officer | Disposed S | 3,394 | $44.41 | $150.73K | 90,965 | Direct |
| 12 Aug, 2026 | Shuo Zhang | Director | Disposed S | 1,501 | $51.47 | $77.26K | 23,380 | Direct |
| 01 Jul, 2026 | Shuo Zhang | Director | Acquired A | 2,689 | — | — | 24,881 | Direct |
| 01 Jul, 2026 | Michael B Gustafson | Director | Acquired A | 2,689 | — | — | 40,192 | Direct |
| 01 Jul, 2026 | Ye Jane Li | Director | Acquired A | 2,689 | — | — | 26,632 | Direct |
| 01 Jul, 2026 | Nancy Erba | Director | Acquired A | 2,689 | — | — | 11,943 | Direct |
| 01 Jul, 2026 | Andrzej Strojwas | Chief Technology Officer | Disposed F | 1,356 | $66.88 | $90.69K | 88,843 | Direct |
| 01 Jul, 2026 | Joseph R Bronson | Director | Acquired A | 2,689 | — | — | 40,956 | Direct |
| 01 Jul, 2026 | Adnan Raza | Evp, Finance And Cfo | Disposed F | 6,010 | $66.88 | $401.95K | 65,000 | Direct |
| 01 Jul, 2026 | Chi-Foon Chan | Director | Acquired A | 2,689 | — | — | 24,168 | Direct |
| 01 Jul, 2026 | Andrzej Strojwas | Chief Technology Officer | Acquired A | 5,360 | — | — | 94,203 | Direct |
| 01 Jul, 2026 | Adnan Raza | Evp, Finance And Cfo | Acquired A | 23,450 | — | — | 80,697 | Direct |
| 01 Jan, 2026 | Adnan Raza | Evp, Finance And Cfo | Disposed F | 5,498 | $28.53 | $156.86K | 71,010 | Direct |
| 01 Jan, 2026 | Andrzej Strojwas | Chief Technology Officer | Disposed F | 2,762 | $28.53 | $78.80K | 89,204 | Direct |
| 09 Dec, 2025 | Kimon Michaels | Evp Of Products And Solutions | Disposed G | 5,070 | $0.00 | $0 | 1,542,072 | Indirect |
| 01 Aug, 2025 | Andrzej Strojwas | Chief Technology Officer | Acquired A | 8,000 | — | — | 91,966 | Direct |
| 01 Aug, 2025 | Adnan Raza | Evp, Finance And Cfo | Acquired A | 35,000 | — | — | 76,508 | Direct |
| 01 Jul, 2025 | Andrzej Strojwas | Chief Technology Officer | Disposed F | 2,497 | $21.87 | $54.61K | 83,613 | Direct |
| 01 Jul, 2025 | Adnan Raza | Evp, Finance And Cfo | Disposed F | 4,921 | $21.87 | $107.62K | 63,880 | Direct |
| 01 Jul, 2025 | Kimon Michaels | Evp Of Products And Solutions | Disposed F | 798 | $21.87 | $17.45K | 28,298 | Indirect |