| $255M | ||
| $98M | ||
| $48M | ||
| $38M | ||
| $37M | ||
| $34M |
Buys | $0 | 0 | 0 |
Sells | $227,984 | 2 | 100 |
| Zhang Shuo | director | 0 | $0 | 1 | $77,256 | $-77,256 |
| Strojwas Andrzej | Chief Technology Officer | 0 | $0 | 1 | $150,728 | $-150,728 |
PDF Solutions, Inc. offers a comprehensive array of solutions to the semiconductor sector, encompassing proprietary software, physical intellectual property for integrated circuit designs, electrical measurement hardware, proven methodologies, and professional services. The company maintains a global presence, with significant operations in the United States, China, Japan, Taiwan, and other international regions. At the core of their software portfolio is the Exensio platform. This includes Manufacturing Analytics, which centralizes collected data, providing engineers with a consistent view to effectively identify and analyze production yield, performance, and reliability issues. Process Control delivers capabilities for failure detection, classification, and robust monitoring and management of manufacturing tool sets. Test Operations focuses on efficient data collection and analytical functionalities, while Assembly Operations is designed to seamlessly link assembly, packaging, fabrication, and characterization data throughout a product's entire lifespan. Beyond software, PDF Solutions provides advanced hardware and systems such as their design-for-inspection (DFI) Systems, featuring DFI on-chip instruments, and the eProbe, a non-contact E-beam tool. They also offer the Characterization Vehicle (CV) system, which comprises CV test chips, pdFasTest electrical testers, and specialized Exensio characterization software tailored to process measurements gathered from DFI on-chip instruments using the eProbe tool. Further enhancing their product suite are Cimetrix software products, which facilitate the implementation of industry-standard interfaces for equipment manufacturers. Their service offerings extend to software-as-a-service (SaaS) subscriptions, various software-related support, and dedicated characterization services. PDF Solutions engages a broad spectrum of clients—including integrated device manufacturers, fabless semiconductor companies, foundries, equipment manufacturers, electronics manufacturing suppliers, original device manufacturers, outsourced semiconductor assembly and test firms, and system houses—through a combination of direct sales, dedicated service teams, and strategic alliances. Established in 1991, the company's headquarters are located in Santa Clara, California.
Over the last 12 months, insiders at PDF Solutions, Inc. have bought $0 and sold $227,984 worth of PDF Solutions, Inc. stock.
On average, over the past 5 years, insiders at PDF Solutions, Inc. have bought $1.37M and sold $1.35M worth of stock each year.
There was no buying activity among insiders over the last 12 months.
The last purchase of 7,500 shares for transaction amount of $145,875 was made by GUSTAFSON MICHAEL B (director) on 2025‑05‑13.
| 2026-08-31 | Sale | Strojwas Andrzej | Chief Technology Officer | 3,394 0.0083% | $44.41 | $150,728 | -3.88% | |
| 2026-08-12 | Sale | Zhang Shuo | director | 1,501 0.0036% | $51.47 | $77,256 | -13.21% | |
| 2025-05-13 | GUSTAFSON MICHAEL B | director | 7,500 0.0192% | $19.45 | $145,875 | +41.27% | ||
| 2025-02-25 | KIBARIAN JOHN KACHIG | PRESIDENT AND CEO | 15,644 0.0388% | $22.11 | $345,889 | +4.10% | ||
| 2025-02-24 | KIBARIAN JOHN KACHIG | PRESIDENT AND CEO | 34,356 0.0878% | $22.80 | $783,317 | +0.62% | ||
| 2025-02-24 | GUSTAFSON MICHAEL B | director | 4,000 0.0103% | $23.06 | $92,240 | +0.62% | ||
| 2024-12-17 | Sale | Strojwas Andrzej | CTO | 6,253 0.0161% | $30.39 | $190,040 | -25.99% | |
| 2024-12-16 | Sale | Strojwas Andrzej | CTO | 5,030 0.013% | $30.85 | $155,194 | -26.71% | |
| 2024-12-11 | Sale | Erba Nancy | director | 2,000 0.0052% | $30.81 | $61,620 | -26.56% | |
| 2024-06-03 | Sale | Zhang Shuo | director | 5,500 0.0143% | $34.66 | $190,630 | -16.45% | |
| 2024-05-17 | Sale | Raza Adnan | EVP, FINANCE AND CFO | 9,647 0.0249% | $33.95 | $327,516 | -14.31% | |
| 2024-05-16 | Sale | Raza Adnan | EVP, FINANCE AND CFO | 16,504 0.0424% | $33.82 | $558,165 | -12.75% | |
| 2024-05-15 | Sale | Raza Adnan | EVP, FINANCE AND CFO | 1,343 0.0035% | $34.52 | $46,360 | -14.29% | |
| 2024-02-26 | Sale | Li Ye Jane | director | 9,653 0.0252% | $33.27 | $321,155 | -5.95% | |
| 2024-02-23 | Sale | Li Ye Jane | director | 1,531 0.004% | $34.00 | $52,054 | -6.79% | |
| 2024-02-21 | Sale | BRONSON JOSEPH R | director | 15,000 0.0394% | $34.63 | $519,450 | -9.28% | |
| 2023-12-13 | Sale | GUSTAFSON MICHAEL B | director | 4,883 0.0127% | $30.86 | $150,689 | +3.54% | |
| 2023-12-12 | Sale | GUSTAFSON MICHAEL B | director | 867 0.0023% | $31.29 | $27,128 | +3.88% | |
| 2023-11-29 | Sale | Erba Nancy | director | 1,800 0.0047% | $30.57 | $55,026 | +5.80% | |
| 2023-08-18 | Sale | Zhang Shuo | director | 3,047 0.008% | $33.75 | $102,836 | -3.84% |
| Strojwas Andrzej | Chief Technology Officer | 90965 0.2173% | $4.15M | 0 | 5 | |
| Zhang Shuo | director | 23380 0.0558% | $1.07M | 0 | 5 | |
| KIBARIAN JOHN KACHIG | PRESIDENT AND CEO | 2522756 6.0255% | $115.16M | 4 | 53 | <0.0001% |
| COBOURN THOMAS | VP, Yield Analysis | 773257 1.8469% | $35.3M | 0 | 59 | |
| LANZA LUCIO | director | 318967 0.7618% | $14.56M | 11 | 6 | +48.14% |
| JOSEPH DAVID | Chief Strategy Officer | 193401 0.4619% | $8.83M | 0 | 14 | |
| MELMAN P STEVEN | VP Investor Relations | 131507 0.3141% | $6M | 0 | 10 | |
| MICHAELS KIMON | 125205 0.299% | $5.72M | 0 | 46 | ||
| CASSIN BJ | director | 100000 0.2388% | $4.57M | 0 | 27 | |
| JENSEN JAMES D | VP, Yield Aware - FDC | 51219 0.1223% | $2.34M | 1 | 5 | +60.71% |
| Raza Adnan | EVP, FINANCE AND CFO | 48218 0.1152% | $2.2M | 0 | 8 | |
| GUSTAFSON MICHAEL B | director | 30074 0.0718% | $1.37M | 2 | 9 | +20.95% |
| HARTGRING CORNELIS | Vice President, CSS | 28508 0.0681% | $1.3M | 0 | 40 | |
| BRONSON JOSEPH R | director | 26456 0.0632% | $1.21M | 0 | 2 | |
| HEINRICHS R STEPHEN | director | 19431 0.0464% | $887,025.15 | 3 | 2 | +51.39% |
| WALKER GREGORY C | CFO, VP Finance | 13972 0.0334% | $637,821.80 | 0 | 12 | |
| Erba Nancy | director | 13739 0.0328% | $627,185.35 | 0 | 2 | |
| Li Ye Jane | director | 12132 0.029% | $553,825.80 | 0 | 2 | |
| Yin Gerald Zheyao | director | 11023 0.0263% | $503,199.95 | 0 | 1 | |
| Yu Albert YC | director | 8913 0.0213% | $406,878.45 | 0 | 20 | |
| HAWIT ANDRE | VP/GM Yield Mngmt Solutions | 7000 0.0167% | $319,550.00 | 8 | 65 | <0.0001% |
| BAYBROOK REBECCA M | Vice-President Human Resources | 2168 0.0052% | $98,969.20 | 0 | 1 | |
| MacLean Kevin | VP, Gen. Manager DFM Solutions | 1974 0.0047% | $90,113.10 | 0 | 3 | |
| LUCAS DONALD L | director | 0 0% | $0 | 0 | 12 | |
| BUEHLER-GARCIA MICHAEL J | Vice-President of Marketing | 0 0% | $0 | 0 | 1 | |
| RAYMOND DOUGLAS M | Executive VP, Client Services | 0 0% | $0 | 0 | 2 | |
| MALIK ZIA | VP of Sales | 0 0% | $0 | 0 | 2 | |
| Kim KwangH | VP of Business Development | 0 0% | $0 | 0 | 4 |
$1,663,291,565 | 152 | -24.54% | $2.09B | |
$17,961,727 | 123 | 11.41% | $2.26B | |
$8,333,391 | 65 | 80.00% | $1.3B | |
$12,052,963 | 53 | 54.07% | $2.04B | |
PDF Solutions, Inc. (PDFS) | $2,920,291 | 29 | 25.28% | $1.91B |
$24,728,637 | 18 | 40.67% | $1.58B | |
$1,103,306 | 18 | 35.84% | $2.33B | |
$3,941,854 | 10 | 15.04% | $2.14B | |
$721,098 | 10 | -4.07% | $2.05B | |
$348,831,538 | 9 | -23.39% | $1.46B | |
$60,645,333 | 9 | -5.98% | $2.11B | |
$1,015,069 | 8 | -6.81% | $1.11B | |
$1,659,385 | 8 | 3.41% | $1.81B | |
$57,202,373 | 7 | 10.98% | $1.92B | |
$100,143,022 | 7 | -19.97% | $1.73B | |
$4,221,415 | 6 | 1.19% | $2.23B | |
$264,724 | 3 | 27.98% | $1.35B | |
$7,201,200 | 2 | -31.10% | $1.24B | |
$17,786,400 | 2 | 8.93% | $1.22B |
| Increased Positions | 104 | +53.33% | 3M | +9.28% |
| Decreased Positions | 86 | -44.1% | 2M | -5.95% |
| New Positions | 29 | New | 2M | New |
| Sold Out Positions | 25 | Sold Out | 898,752 | Sold Out |
| Total Postitions | 213 | +9.23% | 31M | +3.34% |
| Blackrock, Inc. | $143,708.00 | 12.16% | 4.86M | +65,534 | +1.37% | 2025-09-30 |
| Vanguard Group Inc | $93,219.00 | 7.89% | 3.15M | -29,081 | -0.91% | 2025-09-30 |
| Needham Investment Management Llc | $59,648.00 | 5.05% | 2.02M | +105,050 | +5.49% | 2025-09-30 |
| William Blair Investment Management, Llc | $39,876.00 | 3.37% | 1.35M | +162,358 | +13.68% | 2025-09-30 |
| State Street Corp | $33,863.00 | 2.87% | 1.15M | +8,671 | +0.76% | 2025-09-30 |
| Samjo Management, Llc | $33,117.00 | 2.8% | 1.12M | +184,925 | +19.76% | 2025-09-30 |
| Ranger Investment Management, L.P. | $31,241.00 | 2.64% | 1.06M | +11,665 | +1.12% | 2025-09-30 |
| Emerald Advisers, Llc | $27,855.00 | 2.36% | 942,655 | -11,706 | -1.23% | 2025-09-30 |
| Dimensional Fund Advisors Lp | $23,974.00 | 2.03% | 811,293 | -35,157 | -4.15% | 2025-09-30 |
| Snyder Capital Management L P | $23,651.00 | 2% | 800,357 | -12,282 | -1.51% | 2025-09-30 |