🕵️ PDF Solutions Inc ($PDFS)
SEC insider & ownership activity, last 12 months · CIK 1120914 · every row links its SEC filing
Over the last 12 months insiders sold $228K with no open-market buying against it. Strojwas Andrzej sold $151K in discretionary trades (Aug). 1 planned sale is pending, the largest $77K (Shuo Zhang). No red-flag 8-Ks in the window.
Monthly net open-market insider flow, last 12 months (up = net buying)
Insider flow
0 buyers, $0 (0 lots) · 2 sellers, $228K (2 lots)
| Insider | Buys | Bought | Sells | Sold | Last |
|---|---|---|---|---|---|
| Strojwas Andrzej | 0 | – | 1 | $151K | Aug 31, 2026 |
| Zhang Shuo | 0 | – | 1 | $77K | Aug 12, 2026 |
5%+ holders
| Holder | Stake | Class | Schedule | Event | |
|---|---|---|---|---|---|
| Kibarian John Kachig | 6.5% | 13G | Feb 17, 2026 | filing ↗ | |
| Needham Investment Management L.L.C. | 5.1% | 13G | May 14, 2026 | filing ↗ | |
| Needham Asset Management, LLC | 5.1% | 13G | May 14, 2026 | filing ↗ | |
| George A. Needham | 5.1% | 13G | May 14, 2026 | filing ↗ |
Planned insider sales (Form 144)
| Seller | Planned | Approx. sale date | |
|---|---|---|---|
| Andrzej Strojwas | $151K | Aug 31, 2026 | filing ↗ |
| Shuo Zhang | $77K | Aug 12, 2026 | filing ↗ |
Material events (8-K)
| Item | Event date | |
|---|---|---|
| Earnings (2.02) | Aug 6, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Aug 6, 2026 | filing ↗ |
| Shareholder vote (5.07) | Jun 16, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Jun 16, 2026 | filing ↗ |
| Other events (8.01) | May 13, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | May 13, 2026 | filing ↗ |
| Earnings (2.02) | May 7, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | May 7, 2026 | filing ↗ |
| Material agreement (1.01) | Apr 23, 2026 | filing ↗ |
| New financial obligation (2.03) | Apr 23, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Apr 23, 2026 | filing ↗ |
| Earnings (2.02) | Feb 12, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Feb 12, 2026 | filing ↗ |
| Reg FD disclosure (7.01) | Nov 12, 2025 | filing ↗ |
| Earnings (2.02) | Nov 6, 2025 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Nov 6, 2025 | filing ↗ |