NEEDHAM INVESTMENT MANAGEMENT LLC 13D and 13G filings for PDF Solutions, Inc.:
- Schedule 13D must be filed within ten days after a person or an organization acquires beneficial ownership of more than 5% of a voting class of a company's equity securities.
- Shares have been adjusted for stock splits.
| Reported DateTime | Transaction Date | Type | Company Symbol | Filed By Symbol | Shares Owned % Owned | Shares Vs. Prev Report | View |
| 2026-05-14 6:39 pm Purchase | 2026-03-31 | 13G | PDF SOLUTIONS INC PDFS | NEEDHAM INVESTMENT MANAGEMENT LLC | 2,022,700 5.100% | 57,700 (+2.94%) | Filing |
| 2026-02-13 5:48 pm Sale | 2025-12-31 | 13G | PDF SOLUTIONS INC PDFS | NEEDHAM INVESTMENT MANAGEMENT LLC | 1,965,000 4.900% | -53,550 (-2.65%) | Filing |
| 2025-11-13 5:48 pm Purchase | 2025-09-30 | 13G | PDF SOLUTIONS INC PDFS | NEEDHAM INVESTMENT MANAGEMENT LLC | 2,018,550 5.100% | 2,018,550 (New Position) | Filing |