PDF SOLUTIONS INC (PDFS) has 9 SEC Form 4 insider filings on record in the last 90 days. No insider purchases were filed — 2 sales totalling $228K. Most recent filing: Sept. 1, 2026.
| Date | Insider | Value | Shares | Stake | Pre-planned | Links |
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| Sept. 1, 2026 filed Aug. 31, 2026 | Strojwas Andrzej Chief Technology Officer | −$150,728 | 3,394 | −4% | No | |
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| Aug. 12, 2026 | Zhang Shuo Director | −$77,256 | 1,501 | −6% | No | |
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| July 2, 2026 filed July 1, 2026 | Strojwas Andrzej Chief Technology Officer | — | +4,004 | +4% | No | |
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| July 2, 2026 filed July 1, 2026 | Zhang Shuo Director | $0 | 2,689 | +12% | No | |
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| July 2, 2026 filed July 1, 2026 | GUSTAFSON MICHAEL B Director | $0 | 2,689 | +7% | No | |
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Showing the 5 most recent of 9 filings in the last 90 days.
Form 4 is the filing company officers, directors and 10% shareholders must submit to the SEC within two business days of trading their own company's stock. Open-market purchases generally carry more signal than sales, which are often scheduled in advance. More on how this works.
Real-time Telegram alerts the moment a Form 4 is filed. Filings shown here are delayed by 72 hours.
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