PDF Solutions Inc
PDFS- Exchange
- Nasdaq
- Industry
- Services-Prepackaged Software
- SEC CIK
- 0001120914
In the last 90 days, PDF Solutions Inc insiders filed 0 open-market purchases and 2 sales; 283 institutions reported holding it in 13F filings for Q2 2026, worth $2.75B in total; no superinvestor holds it.
Open-market trades, last 90 days
Open-market purchases (P) and sales (S) by PDF Solutions Inc insiders, counted by Form 4 filing. Trades with a flagged price and duplicate filings are left out.
- Open-market buys
- 0 filings
- Open-market sells
- 2 filings
- 2 insiders, $228.0K in total
- Insiders trading
- 2
- Net value
- −$228.0K
- Purchases minus sales
Insider roster
Directors, officers and 10% owners who have filed a Form 4 for PDF Solutions Inc, current and former, most recent filer first. Last reported holding is the position after the last non-derivative trade in their latest filing.
| Name | Title | Last reported holding | Last filing | Filings, past year |
|---|---|---|---|---|
| Strojwas Andrzej | Chief Technology Officer | 90,965 | Sep 1, 2026 | 3 |
| Zhang Shuo | Director | 23,380 | Aug 12, 2026 | 2 |
| Gustafson Michael B | Director | 40,192 | Jul 2, 2026 | 1 |
| Chan Chi-Foon | Director | 24,168 | Jul 2, 2026 | 1 |
| Bronson Joseph R | Director | 40,956 | Jul 2, 2026 | 1 |
| Li Ye Jane | Director | 26,632 | Jul 2, 2026 | 1 |
| Erba Nancy | Director | 11,943 | Jul 2, 2026 | 1 |
| Raza Adnan | EVP, Finance and CFO | 80,697 | Jul 2, 2026 | 2 |
| Michaels Kimon | EVP of Products and Solutions | 1,542,072Indirect | Dec 11, 2025 | 1 |
| Kibarian John Kachig | PRESIDENT AND CEO | 2,522,756Indirect | Feb 25, 2025 | 0 |
| Iansiti Marco | Director | 39,465 | Jul 5, 2022 | 0 |
Insider trades
Each row adds up one type of transaction in one Form 4 filing. Only open-market purchases (P) and sales (S) are shown by default; use the filters to see grants, option exercises and other codes.
| Filed (ET) | Trade date | Filing delay | Insider | Transaction | Shares | Avg price | Value | Holding change | Flags |
|---|---|---|---|---|---|---|---|---|---|
| Sep 1, 2026 (view filing)2:09 PM ET | Aug 31 | 1 day | Strojwas AndrzejChief Technology Officer | SSale | −3.39K | $44.41 | −$150.7K | −3.6%91.0K after | |
| Aug 12, 2026 (view filing)9:32 PM ET | Aug 12 | Same day | Zhang ShuoDirector | SSale | −1.50K | $51.47 | −$77.3K | −6.0%23.4K after | |
| May 14, 2025 (view filing) | May 13 | 1 day | Gustafson Michael BDirector | PPurchase | +7.50K | $19.45 | +$145.9K | +33.2%30.1K after | |
| Feb 25, 2025 (view filing) | Feb 24 | 1 day | Gustafson Michael BDirector | PPurchase | +4.00K | $23.06 | +$92.2K | +21.5%22.6K after | |
| Feb 25, 2025 (view filing) | Feb 24-25 | 1 day | Kibarian John KachigPRESIDENT AND CEO | PPurchase | +50.0K | $22.58 | +$1.13M | +2.0%2.52M after | 2 lots |
| Dec 19, 2024 (view filing) | Dec 17 | 2 days | Strojwas AndrzejCTO | SSale | −6.25K | $30.39 | −$190.0K | −6.6%88.5K after | 2 lots |
| Dec 17, 2024 (view filing) | Dec 16 | 1 day | Strojwas AndrzejCTO | SSale | −5.03K | $30.85 | −$155.2K | −5.0%94.7K after | |
| Dec 12, 2024 (view filing) | Dec 11 | 1 day | Erba NancyDirector | SSale | −2.00K | $30.81 | −$61.6K | −12.7%13.7K after | |
| Jun 4, 2024 (view filing) | Jun 3 | 1 day | Zhang ShuoDirector | SSale | −5.50K | $34.66 | −$190.6K | −34.6%10.4K after | |
| May 17, 2024 (view filing) | May 15-17 | 2 days | Raza AdnanEVP, FINANCE AND CFO | SSale | −27.5K | $33.90 | −$932.0K | −36.3%48.2K after | 3 lots |
| Feb 26, 2024 (view filing) | Feb 23-26 | 3 days | Li Ye JaneDirector | SSale | −11.2K | $33.37 | −$373.2K | −48.0%12.1K after | 2 lots |
| Feb 22, 2024 (view filing) | Feb 21 | 1 day | Bronson Joseph RDirector | SSale | −15.0K | $34.63 | −$519.5K | −36.2%26.5K after | |
| Dec 14, 2023 (view filing) | Dec 12-13 | 2 days | Gustafson Michael BDirector | SSale | −5.75K | $30.92 | −$177.8K | −28.8%14.2K after | 2 lots |
| Nov 30, 2023 (view filing) | Nov 29 | 1 day | Erba NancyDirector | SSale | −1.80K | $30.57 | −$55.0K | −10.3%15.7K after | |
| Aug 21, 2023 (view filing) | Aug 18 | 3 days | Zhang ShuoDirector | SSale | −3.05K | $33.75 | −$102.8K | −16.1%15.9K after | |
| Mar 8, 2023 (view filing) | Mar 8 | Same day | Strojwas AndrzejCTO | SSale | −2.52K | $38.45 | −$96.9K | −2.8%87.1K after | |
| Mar 6, 2023 (view filing) | Mar 3 | 3 days | Raza AdnanEVP, FINANCE AND CFO | SSale | −15.5K | $37.64 | −$585.2K | −17.2%75.0K after | |
| Mar 2, 2023 (view filing) | Feb 28 | 2 days | Gustafson Michael BDirector | SSale | −13.3K | $37.26 | −$496.2K | −44.5%16.6K after | |
| Feb 24, 2023 (view filing) | Feb 22 | 2 days | Bronson Joseph RDirector | SSale | −12.5K | $36.47 | −$455.9K | −24.7%38.1K after | |
| Dec 2, 2022 (view filing) | Nov 30 | 2 days | Strojwas AndrzejCTO | SSale | −19.9K | $31.00 | −$617.7K | −17.6%93.4K after | |
| Nov 29, 2022 (view filing) | Nov 25-29 | 4 days | Raza AdnanEVP, FINANCE AND CFO | SSale | −12.2K | $30.22 | −$369.4K | −11.1%97.5K after | 2 lots |
| Nov 17, 2022 (view filing) | Nov 15-16 | 2 days | Gustafson Michael BDirector | SSale | −5.00K | $29.92 | −$149.6K | −14.3%29.9K after | 2 lots |
| Nov 17, 2022 (view filing) | Nov 16 | 1 day | Zhang ShuoDirector | SSale | −2.00K | $29.84 | −$59.7K | −11.4%15.6K after | |
| Jun 16, 2022 (view filing) | Jun 14-16 | 2 days | Raza AdnanEVP, FINANCE AND CFO | SSale | −39.4K | $20.22 | −$796.6K | −31.3%86.3K after | 3 lots |
| Jun 13, 2022 (view filing) | Jun 9-13 | 4 days | Raza AdnanEVP, FINANCE AND CFO | SSale | −6.16K | $21.88 | −$134.7K | −4.7%125.6K after | 2 lots |
| Mar 17, 2022 (view filing) | Mar 15 | 2 days | Zhang ShuoDirector | SSale | −11.0K | $25.50 | −$280.9K | −51.5%10.4K after | |
| Feb 25, 2022 (view filing) | Feb 23 | 2 days | Michaels KimonEVP OF PRODUCTS AND SOLUTIONS | SSale | −8.85K | – | – | −6.6%125.2K after | |
| Nov 15, 2021 (view filing) | Nov 12 | 3 days | Gustafson Michael BDirector | SSale | −3.00K | $33.00 | −$99.0K | −9.8%27.7K after |