| $164M | ||
| $143M | ||
| $143M | ||
| $76M | ||
| $60M | ||
| $35M |
Buys | $1,367,321 | 4 | 100 |
Sells | $0 | 0 | 0 |
| KIBARIAN JOHN KACHIG | PRESIDENT AND CEO | 2 | $1.13M | 0 | $0 | $1.13M |
| GUSTAFSON MICHAEL B | director | 2 | $238,115 | 0 | $0 | $238,115 |
PDF Solutions, Inc. provides proprietary software and physical intellectual property products for integrated circuit designs, electrical measurement hardware tools, proven methodologies, and professional services in the United States, China, Japan, Taiwan, and internationally. The company offers Exensio software products, such as Manufacturing Analytics that stores collected data in a common environment with a consistent view for enabling product engineers to identify and analyze production yield, performance, reliability, and other issues; Process Control that provides failure detection and classification capabilities for monitoring, alarming, and controlling manufacturing tool sets; Test Operations that offers data collection and analysis capabilities; and Assembly Operations that provides device manufacturers with the capability to link assembly and packaging data, including fabrication and characterization data over the product life cycle. It also provides design-for-inspection (DFI) Systems, such as DFI on-chip instruments; eProbe non-contactless E-beam tool; and Characterization Vehicle (CV) system, which includes CV test chips and pdFasTest electrical testers, as well as Exensio characterization software, designed to analyze the measurements collected from DFI on-chip instruments using the eProbe tool. In addition, the company offers Cimetrix software products that enables equipment manufacturers to provide industry standard interfaces on their products; and software-as-a-service, software related services, and characterization services. It sells its technologies and services through direct sales force, service teams, and strategic alliances to integrated device manufacturers, fabless semiconductor companies, foundries, equipment manufacturers, electronics manufacturing suppliers, original device manufacturers, out-sourced semiconductor assembly and test, and system houses. The company was founded in 1991 and is headquartered in Santa Clara, California.
Over the last 12 months, insiders at PDF Solutions, Inc. have bought $1.37M and sold $0 worth of PDF Solutions, Inc. stock.
On average, over the past 5 years, insiders at PDF Solutions, Inc. have bought $1.37M and sold $1.63M worth of stock each year.
Highest buying activity among insiders over the last 12 months: KIBARIAN JOHN KACHIG (PRESIDENT AND CEO) — $1.13M. GUSTAFSON MICHAEL B (director) — $238,115.
The last purchase of 7,500 shares for transaction amount of $145,875 was made by GUSTAFSON MICHAEL B (director) on 2025‑05‑13.
| 2025-05-13 | GUSTAFSON MICHAEL B | director | 7,500 0.0192% | $19.45 | $145,875 | +22.51% | ||
| 2025-02-25 | KIBARIAN JOHN KACHIG | PRESIDENT AND CEO | 15,644 0.0388% | $22.11 | $345,889 | -0.30% | ||
| 2025-02-24 | KIBARIAN JOHN KACHIG | PRESIDENT AND CEO | 34,356 0.0878% | $22.80 | $783,317 | -2.32% | ||
| 2025-02-24 | GUSTAFSON MICHAEL B | director | 4,000 0.0103% | $23.06 | $92,240 | -2.32% | ||
| 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% | |
| 2023-03-08 | Sale | Strojwas Andrzej | 2,520 0.0067% | $38.45 | $96,894 | -11.45% | ||
| 2023-03-03 | Sale | Raza Adnan | 15,547 0.0408% | $37.64 | $585,189 | -10.15% |
| KIBARIAN JOHN KACHIG | PRESIDENT AND CEO | 2522756 6.3846% | $87.77M | 4 | 53 | <0.0001% |
| GUSTAFSON MICHAEL B | director | 30074 0.0761% | $1.05M | 2 | 9 | |
| COBOURN THOMAS | VP, Yield Analysis | 773257 1.957% | $26.9M | 0 | 59 | |
| LANZA LUCIO | director | 318967 0.8072% | $11.1M | 11 | 6 | +48.14% |
| JOSEPH DAVID | Chief Strategy Officer | 193401 0.4895% | $6.73M | 0 | 14 | |
| MELMAN P STEVEN | VP Investor Relations | 131507 0.3328% | $4.58M | 0 | 10 | |
| MICHAELS KIMON | 125205 0.3169% | $4.36M | 0 | 46 | ||
| CASSIN BJ | director | 100000 0.2531% | $3.48M | 0 | 27 | |
| Strojwas Andrzej | CTO | 88464 0.2239% | $3.08M | 0 | 4 | |
| JENSEN JAMES D | VP, Yield Aware - FDC | 51219 0.1296% | $1.78M | 1 | 5 | +60.71% |
| Raza Adnan | EVP, FINANCE AND CFO | 48218 0.122% | $1.68M | 0 | 8 | |
| HARTGRING CORNELIS | Vice President, CSS | 28508 0.0721% | $991,793.32 | 0 | 40 | |
| BRONSON JOSEPH R | director | 26456 0.067% | $920,404.24 | 0 | 2 | |
| HEINRICHS R STEPHEN | director | 19431 0.0492% | $676,004.49 | 3 | 2 | +51.39% |
| WALKER GREGORY C | CFO, VP Finance | 13972 0.0354% | $486,085.88 | 0 | 12 | |
| Erba Nancy | director | 13739 0.0348% | $477,979.81 | 0 | 2 | |
| Li Ye Jane | director | 12132 0.0307% | $422,072.28 | 0 | 2 | |
| Yin Gerald Zheyao | director | 11023 0.0279% | $383,490.17 | 0 | 1 | |
| Zhang Shuo | director | 10381 0.0263% | $361,154.99 | 0 | 4 | |
| Yu Albert YC | director | 8913 0.0226% | $310,083.27 | 0 | 20 | |
| HAWIT ANDRE | VP/GM Yield Mngmt Solutions | 7000 0.0177% | $243,530.00 | 8 | 65 | <0.0001% |
| BAYBROOK REBECCA M | Vice-President Human Resources | 2168 0.0055% | $75,424.72 | 0 | 1 | |
| MacLean Kevin | VP, Gen. Manager DFM Solutions | 1974 0.005% | $68,675.46 | 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 |
$4,137,988 | 164 | -10.35% | $873.93M | |
$12,052,963 | 53 | 54.07% | $957.6M | |
$233,009,488 | 29 | 94.46% | $1.37B | |
PDF Solutions, Inc. (PDFS) | $1,552,971 | 25 | 27.46% | $1.37B |
$28,162,283 | 18 | -2.21% | $836.15M | |
$843,524 | 18 | 9.21% | $1.56B | |
$2,466,154 | 15 | 30.93% | $2.35B | |
$3,149,968 | 12 | 42.15% | $2.3B | |
$182,900 | 11 | 59.19% | $776.04M | |
$1,649,934 | 9 | -12.03% | $1.73B | |
$694,969 | 8 | -6.89% | $1.73B | |
$348,831,386 | 8 | -27.30% | $1.76B | |
$99,903,257 | 6 | -22.61% | $1.37B | |
$1,231,228 | 5 | 13.82% | $1.76B | |
$92,300 | 3 | -2.05% | $1.16B | |
$1,018,810 | 2 | 22.99% | $2.17B | |
$7,201,200 | 2 | -31.10% | $1.08B | |
$643,750 | 2 | -66.70% | $756.7M | |
$364,000 | 1 | 68.79% | $1.77B |
| Increased Positions | 101 | +51.27% | 3M | +11.41% |
| Decreased Positions | 87 | -44.16% | 3M | -9.6% |
| New Positions | 35 | New | 1M | New |
| Sold Out Positions | 28 | Sold Out | 755,200 | Sold Out |
| Total Postitions | 211 | +7.11% | 30M | +1.8% |
| 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 |