| 08/06/2026 4:16 PM | PDF Solutions (1120914) Filer | Form S-8 Registration statement under Securities Act of 1933 to be offered to employees pursuant to certain plans | |
| 07/02/2026 3:42 PM | GUSTAFSON MICHAEL B (1245081) Reporting PDF Solutions (1120914) Issuer | Form 4 Statement of changes in beneficial ownership of securities | |
| 07/02/2026 3:44 PM | PDF Solutions (1120914) Issuer Zhang Shuo (1782026) Reporting | Form 4 Statement of changes in beneficial ownership of securities | |
| 07/02/2026 3:46 PM | PDF Solutions (1120914) Issuer Strojwas Andrzej (1892306) Reporting | Form 4 Statement of changes in beneficial ownership of securities | |
| 07/02/2026 3:33 PM | Li Ye Jane (1667921) Reporting PDF Solutions (1120914) Issuer | Form 4 Statement of changes in beneficial ownership of securities | |
| 07/02/2026 3:35 PM | BRONSON JOSEPH R (1209040) Reporting PDF Solutions (1120914) Issuer | Form 4 Statement of changes in beneficial ownership of securities | |
| 05/29/2026 12:24 PM | PDF Solutions (1120914) Filer | Form SD Specialized Disclosure Report | |
| 05/27/2026 8:00 PM | ADVANTEST CORP (1158838) Filed by PDF Solutions (1120914) Subject | Form SCHEDULE 13G/A | |
| 05/14/2026 5:39 PM | NEEDHAM INVESTMENT MANAGEMENT LLC (1167212) Filed by PDF Solutions (1120914) Subject | Form SCHEDULE 13G | |
| 05/14/2026 3:50 PM | PDF Solutions (1120914) Filer | Form 424B5 | |
| 05/13/2026 3:30 PM | PDF Solutions (1120914) Filer | Form 424B5 | |
| 05/13/2026 3:00 PM | PDF Solutions (1120914) Filer | Form S-3ASR | |
| 04/29/2026 6:26 PM | PDF Solutions (1120914) Filer | Form DEFA14A | |
| 04/29/2026 6:26 PM | PDF Solutions (1120914) Filer | Form ARS | |
| 04/24/2026 4:27 PM | PDF Solutions (1120914) Filer | Form 8-K Current report pursuant to Section 13 or 15(d) | |
| 03/27/2026 10:22 AM | PDF Solutions (1120914) Subject VANGUARD GROUP INC (102909) Filed by | Form SCHEDULE 13G/A | |
| 02/13/2026 4:48 PM | NEEDHAM INVESTMENT MANAGEMENT LLC (1167212) Filed by PDF Solutions (1120914) Subject | Form SCHEDULE 13G/A | |
| 02/12/2026 3:26 PM | PDF Solutions (1120914) Filer | Form 8-K Current report pursuant to Section 13 or 15(d) | |
| 01/05/2026 3:45 PM | PDF Solutions (1120914) Issuer Raza Adnan (1803614) Reporting | Form 4 Statement of changes in beneficial ownership of securities | |
| 01/05/2026 3:47 PM | PDF Solutions (1120914) Issuer Strojwas Andrzej (1892306) Reporting | Form 4 Statement of changes in beneficial ownership of securities | |
| 12/11/2025 1:38 PM | MICHAELS KIMON (1165534) Reporting PDF Solutions (1120914) Issuer | Form 4 Statement of changes in beneficial ownership of securities | |
| 11/13/2025 4:48 PM | NEEDHAM INVESTMENT MANAGEMENT LLC (1167212) Filed by PDF Solutions (1120914) Subject | Form SCHEDULE 13G | |
| 11/12/2025 8:55 PM | PDF Solutions (1120914) Filer | Form 8-K Current report pursuant to Section 13 or 15(d) | |
| 11/06/2025 3:30 PM | PDF Solutions (1120914) Filer | Form 10-Q General form for quarterly reports under Section 13 or 15(d) | |