PDF Solutions Ownership

Who are the major shareholders and have insiders been buying or selling?

Recent Insider Transactions

NasdaqGS:PDFS Recent Insider Transactions by Companies or Individuals
Date	Value	Name	Entity	Shares	Max Price
13 May 25	BuyUS$145,875	Michael Gustafson	Individual	7,500	US$19.45
25 Feb 25	BuyUS$1,129,206	John Kibarian	Individual	50,000	US$22.80
24 Feb 25	BuyUS$92,240	Michael Gustafson	Individual	4,000	US$23.06
17 Dec 24	SellUS$190,040	Andrzej Strojwas	Individual	6,253	US$31.17
16 Dec 24	SellUS$155,194	Andrzej Strojwas	Individual	5,030	US$30.85
11 Dec 24	SellUS$61,620	Nancy Erba	Individual	2,000	US$30.81

Insider Trading Volume

Insider Buying: Insufficient data to determine if insiders have bought more shares than they have sold in the past 3 months.

Ownership Breakdown

What is the ownership structure of PDFS?
Owner Type	Number of Shares	Ownership Percentage
State or Government	30,122	0.0761%
Public Companies	3,306,924	8.35%
Individual Insiders	6,853,615	17.3%
Institutions	29,395,414	74.3%

Dilution of Shares: Shareholders have not been meaningfully diluted in the past year.

Top Shareholders

Top 25 shareholders own 83.86% of the company

Ownership	Name	Shares	Current Value	Change %	Portfolio %
12.2%	BlackRock, Inc.	4,797,158	US$125.3m	-2.01%	no data
8.37%	Advantest Corporation	3,306,924	US$86.3m	0%	no data
8.06%	The Vanguard Group, Inc.	3,183,700	US$83.1m	0.8%	no data
6.49%	John Kibarian	2,562,474	US$66.9m	0%	no data
6.26%	Gloria Chen	2,472,756	US$64.6m	0%	no data
4.85%	Needham Investment Management, LLC	1,913,500	US$50.0m	2.6%	3.48%
3.99%	Kimon Michaels	1,575,440	US$41.1m	1.83%	no data
3.89%	Emerald Advisers, LLC	1,535,771	US$40.1m	-0.48%	0.78%
3.02%	Wasatch Advisors LP	1,191,373	US$31.1m	3.65%	0.1%
3.01%	William Blair Investment Management, LLC	1,187,083	US$31.0m	5.43%	0.04%
2.88%	State Street Global Advisors, Inc.	1,137,286	US$29.7m	-1.04%	no data
2.65%	Ranger Investment Management, L.P.	1,045,545	US$27.3m	19.2%	1.85%
2.37%	Samjo Management, LLC	935,794	US$24.4m	7.54%	9.42%
2.14%	Dimensional Fund Advisors LP	846,450	US$22.1m	-0.91%	no data
2.06%	Snyder Capital Management, L.P.	812,639	US$21.2m	7.83%	0.43%
2.03%	Janus Henderson Group plc	801,606	US$20.9m	0%	0.01%
1.99%	Geode Capital Management, LLC	784,701	US$20.5m	6.03%	no data
1.55%	Divisar Capital Management, LLC	611,387	US$16.0m	11.7%	2.93%
1.06%	Silverberg Bernstein Capital Management LLC	418,783	US$10.9m	27.6%	7.24%
0.95%	Morgan Stanley	374,980	US$9.8m	55.1%	no data
0.94%	Northern Trust Global Investments	372,534	US$9.7m	-5.43%	no data
0.86%	Connor, Clark & Lunn Investment Management Ltd.	341,227	US$8.9m	36.4%	0.03%
0.8%	Russell Investment Management, LLC	314,659	US$8.2m	21.5%	0.01%
0.78%	Teachers Insurance and Annuity Association-College Retirement Equities Fund	306,948	US$8.0m	125%	no data
0.73%	Charles Schwab Investment Management, Inc.	288,532	US$7.5m	2.04%	no data

Company Analysis and Financial Data Status

Data	Last Updated (UTC time)
Company Analysis	2025/10/06 21:29
End of Day Share Price	2025/10/06 00:00
Earnings	2025/06/30
Annual Earnings	2024/12/31

Data Sources

The data used in our company analysis is from S&P Global Market Intelligence LLC. The following data is used in our analysis model to generate this report. Data is normalised which can introduce a delay from the source being available.

Package	Data	Timeframe	Example US Source ^*
Company Financials	10 years	Income statement Cash flow statement Balance sheet	SEC Form 10-K SEC Form 10-Q
Analyst Consensus Estimates	+3 years	Forecast financials Analyst price targets	Analyst Research Reports Blue Matrix
Market Prices	30 years	Stock prices Dividends, Splits and Actions	ICE Market Data SEC Form S-1
Ownership	10 years	Top shareholders Insider trading	SEC Form 4 SEC Form 13D
Management	10 years	Leadership team Board of directors	SEC Form 10-K SEC Form DEF 14A
Key Developments	10 years	Company announcements	SEC Form 8-K

^* Example for US securities, for non-US equivalent regulatory forms and sources are used.

Unless specified all financial data is based on a yearly period but updated quarterly. This is known as Trailing Twelve Month (TTM) or Last Twelve Month (LTM) Data. Learn more.

Analysis Model and Snowflake

Details of the analysis model used to generate this report is available on our Github page, we also have guides on how to use our reports and tutorials on Youtube.

Learn about the world class team who designed and built the Simply Wall St analysis model.

Industry and Sector Metrics

Our industry and section metrics are calculated every 6 hours by Simply Wall St, details of our process are available on Github.

Analyst Sources

PDF Solutions, Inc. is covered by 11 analysts. 4 of those analysts submitted the estimates of revenue or earnings used as inputs to our report. Analysts submissions are updated throughout the day.

Analyst	Institution
Robert Burleson	Canaccord Genuity
Jonathan Tanwanteng	CJS Securities, Inc.
Christian Schwab	Craig-Hallum Capital Group LLC