Nasdaq · CIK 0001120914
PDFS PDF SOLUTIONS INC
Insider trading from SEC Form 4. Last filing 41 d ago. Close $54.40 on Oct 9, 2026, +127% from the 52-week low and -23% from the high.
Last 90 days
Net insider value
-$151k
more sold than bought
Buys
0
$0 by 0 insiders
Sells
1
$151k by 1 insider
Insiders on file
10
with a Form 4 at this company
Price and insider trades, last year
PDFSOct 9, 2026 · close 54.40
Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value. Click a marked bar to open the signal.Charts by TradingView Lightweight Charts™
Signals
Open-market buys and sells at PDF SOLUTIONS INC, scored.
| Score | Insider | Value | Holdings | Price context | Filed |
|---|---|---|---|---|---|
| 26Weak | Andrzej Strojwas Chief Technology Officer sell | $151k 3,394 shares | -4% | - | |
| 45Moderate | Michael B Gustafson director buy | $146k 7,500 shares | +33% | +18% from low-42% from high | |
| 38Weak | Michael B Gustafson director buy | $92k 4,000 shares | +22% | - | |
| 58Moderate | John Kachig Kibarian PRESIDENT AND CEO buy | $1.1M 50,000 shares | +2% | - | |
| 35Weak | Andrzej Strojwas CTO sell | $190k 6,253 shares | -7% | - | |
| 34Weak | Andrzej Strojwas CTO sell | $155k 5,030 shares | -5% | - | |
| 35Weak | Nancy Erba director sell | $62k 2,000 shares | -13% | - |
Planned sales
Form 144 notices filed before a sale of restricted or control stock, newest first. The sale itself usually reaches a Form 4 within days. All planned sales
| Filed | Seller | Shares | Value | Sale date | Past 3 months |
|---|---|---|---|---|---|
| Dec 16, 2024 | Strojwas Andrzej Officer | 8,687 0.02% of outstanding | $268k | Dec 16, 2024 | none |
| Dec 11, 2024 | NANCY ERBA FAMILY LIVING TRUST Director | 2,000 0.01% of outstanding | $62k | Dec 11, 2024 | none |
| Nov 13, 2024 | Strojwas Andrzej Officer | 6,253 0.02% of outstanding | $209k | Nov 13, 2024 | none |
Transactions
The last 23 rows filed, every code.
| Date | Insider | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|---|
| Aug 31, 2026 | Andrzej Strojwas Chief Technology Officer | SOpen-market sale Common Stock | -3,394 | $44.41 | $151k | 90,965 | 41 d ago |
| Jan 1, 2026 | Adnan Raza EVP, Finance and CFO | FTax withholding Common Stock | -5,498 | $28.53 | $157k | 71,010 | Jan 5, 2026 |
| Jan 1, 2026 | Andrzej Strojwas Chief Technology Officer | FTax withholding Common Stock | -2,762 | $28.53 | $79k | 89,204 | Jan 5, 2026 |
| Dec 9, 2025 | Kimon Michaels EVP of Products and Solutions | GGift Common Stockindirect: By Trust | -5,070 | $0.00 | $0 | 1,542,072 | Dec 11, 2025 |
| Aug 1, 2025 | Andrzej Strojwas Chief Technology Officer | AGrant or award Common Stock | +8,000 | - | - | 91,966 | Aug 4, 2025 |
| Aug 1, 2025 | Adnan Raza EVP, Finance and CFO | AGrant or award Common Stock | +35,000 | - | - | 76,508 | Aug 4, 2025 |
| Jul 1, 2025 | Kimon Michaels EVP of Products and Solutions | FTax withholding Common Stockindirect: By Spouse | -798 | $21.87 | $17k | 28,298 | Jul 3, 2025 |
| Jul 1, 2025 | Adnan Raza EVP, Finance and CFO | FTax withholding Common Stock | -4,921 | $21.87 | $108k | 63,880 | Jul 3, 2025 |
| Jul 1, 2025 | Andrzej Strojwas Chief Technology Officer | FTax withholding Common Stock | -2,497 | $21.87 | $55k | 83,613 | Jul 3, 2025 |
| Jul 1, 2025 | Michael B Gustafson director | AGrant or award Common Stock | +7,429 | - | - | 37,503 | Jul 2, 2025 |
| Jul 1, 2025 | Ye Jane Li director | AGrant or award Common Stock | +7,429 | - | - | 23,943 | Jul 2, 2025 |
| Jul 1, 2025 | Nancy Erba director | AGrant or award Common Stock | +7,429 | - | - | 27,383 | Jul 2, 2025 |
| Jul 1, 2025 | Shuo Zhang director | AGrant or award Common Stock | +7,429 | - | - | 22,192 | Jul 2, 2025 |
| Jul 1, 2025 | Chi-Foon Chan director | AGrant or award Common Stock | +7,429 | - | - | 21,479 | Jul 2, 2025 |
| Jul 1, 2025 | Joseph R Bronson director | AGrant or award Common Stock | +7,429 | - | - | 38,267 | Jul 2, 2025 |
| May 13, 2025 | Michael B Gustafson director | POpen-market purchase Common Stock | +7,500 | $19.45 | $146k | 30,074 | May 14, 2025 |
| Feb 24, 2025 | Michael B Gustafson director | POpen-market purchase Common Stock | +4,000 | $23.06 | $92k | 22,574 | Feb 25, 2025 |
| Feb 24, 2025 | John Kachig Kibarian PRESIDENT AND CEO | POpen-market purchase Common Stockindirect: By Trust | +34,356 | $22.80 | $783k | 2,507,112 | Feb 25, 2025 |
| Feb 25, 2025 | John Kachig Kibarian PRESIDENT AND CEO | POpen-market purchase Common Stockindirect: By Trust | +15,644 | $22.11 | $346k | 2,522,756 | Feb 25, 2025 |
| Dec 17, 2024 | Andrzej Strojwas CTO | SOpen-market sale Common Stock | -245 | $31.17 | $7,637 | 94,472 | Dec 19, 2024 |
| Dec 17, 2024 | Andrzej Strojwas CTO | SOpen-market sale Common Stock | -6,008 | $30.36 | $182k | 88,464 | Dec 19, 2024 |
| Dec 16, 2024 | Andrzej Strojwas CTO | SOpen-market sale Common Stock | -5,030 | $30.85 | $155k | 94,717 | Dec 17, 2024 |
| Dec 11, 2024 | Nancy Erba director | SOpen-market sale Common Stockindirect: By Trust | -2,000 | $30.81 | $62k | 13,739 | Dec 12, 2024 |
Insiders
Everyone who has filed a Form 4 here.
- Joseph R Bronsondirector
- Chi-Foon Chandirector
- Nancy Erbacfo, officer, director
- Michael B Gustafsondirector
- John Kachig KibarianPRESIDENT AND CEO
- Ye Jane Lidirector
- Kimon MichaelsEVP of Products and Solutions
- Adnan RazaEVP, Finance and CFO
- Andrzej StrojwasChief Technology Officer
- Shuo Zhangdirector
Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.