| Type | Filed | Filer | Subject | Shares Owned | Percent Owned | |
|---|---|---|---|---|---|---|
| SC 13G/A | 2024-02-13 | VANGUARD GROUP INC | PDF SOLUTIONS INC | 3,089,669 | 8.1% | EDGAR |
| SC 13G/A | 2024-02-13 | KIBARIAN JOHN KACHIG | PDF SOLUTIONS INC | 2,512,474 | 6.6% | EDGAR |
| SC 13G/A | 2024-01-23 | BlackRock Inc. | PDF SOLUTIONS INC | 4,840,071 | 12.7% | EDGAR |
| SC 13G/A | 2023-12-11 | Invesco Ltd. | PDF SOLUTIONS INC | 721,613 | 1.9% | EDGAR |
| SC 13G | 2023-08-07 | Cowen Prime Advisors LLC | PDF SOLUTIONS INC | 0 | 0.0% | EDGAR |
| SC 13G/A | 2023-02-14 | KIBARIAN JOHN KACHIG | PDF SOLUTIONS INC | 2,512,474 | 6.7% | EDGAR |
| SC 13G/A | 2023-02-09 | VANGUARD GROUP INC | PDF SOLUTIONS INC | 2,253,291 | 6.0% | EDGAR |
| SC 13G | 2023-02-03 | Cowen Prime Advisors LLC | PDF SOLUTIONS INC | 1,431,404 | 4.0% | EDGAR |
| SC 13G/A | 2023-02-02 | Invesco Ltd. | PDF SOLUTIONS INC | 3,250,698 | 8.7% | EDGAR |
| SC 13G/A | 2023-01-23 | BlackRock Inc. | PDF SOLUTIONS INC | 4,632,962 | 12.4% | EDGAR |
| SC 13G/A | 2022-02-14 | PRICE T ROWE ASSOCIATES INC /MD/ | PDF SOLUTIONS INC | 1,990 | 0.0% | EDGAR |
| SC 13G/A | 2022-02-11 | KIBARIAN JOHN KACHIG | PDF SOLUTIONS INC | 2,512,474 | 6.7% | EDGAR |
| SC 13G/A | 2022-02-10 | Invesco Ltd. | PDF SOLUTIONS INC | 3,260,297 | 8.7% | EDGAR |
| SC 13G/A | 2022-02-10 | VANGUARD GROUP INC | PDF SOLUTIONS INC | 2,096,952 | 5.6% | EDGAR |
| SC 13G | 2022-02-09 | Cowen Prime Advisors LLC | PDF SOLUTIONS INC | 1,742,725 | 5.0% | EDGAR |
| SC 13G/A | 2022-01-28 | BlackRock Inc. | PDF SOLUTIONS INC | 4,723,594 | 12.6% | EDGAR |
| SC 13G/A | 2021-02-16 | PRICE T ROWE ASSOCIATES INC /MD/ | PDF SOLUTIONS INC | 2,300,783 | 6.2% | EDGAR |
| SC 13G/A | 2021-02-16 | DIMENSIONAL FUND ADVISORS LP | PDF SOLUTIONS INC | 1,196,674 | 3.3% | EDGAR |
| SC 13G/A | 2021-02-16 | KIBARIAN JOHN KACHIG | PDF SOLUTIONS INC | 2,512,474 | 6.8% | EDGAR |
| SC 13G/A | 2021-02-12 | Invesco Ltd. | PDF SOLUTIONS INC | 3,204,770 | 8.7% | EDGAR |