SCHEDULE: Wasatch Advisors LP Acquires 6.3% Stake in PDF Solutions

Wasatch Advisors LP has reported beneficial ownership of 2,646,572 shares, representing 6.3% of the common stock of PDF Solutions Inc., as of September 30, 2026.

Summary

• Wasatch Advisors LP has filed a Schedule 13G, indicating it beneficially owns 2,646,572 shares of PDF Solutions Inc. common stock.
• This holding represents 6.3% of the total class of securities.
• The filing date of the event requiring this statement is September 30, 2026.
• Wasatch Advisors LP is an investment adviser organized in Delaware.

Sentiment

Score: 7

Explanation: StockSavvy.ai views this filing as moderately positive, indicating a significant but not overwhelming stake acquisition by a known investment manager, suggesting confidence in the company's prospects.

Positives

• Acquisition of a significant stake (6.3%) by a professional investment manager (Wasatch Advisors LP) suggests confidence in PDF Solutions' future performance.
• The filing indicates Wasatch Advisors LP has sole voting power over 1,852,275 shares and sole dispositive power over 2,646,572 shares, demonstrating clear control over their investment.

Negatives

• The filing does not contain any negative information regarding PDF Solutions Inc. itself; it solely reports on Wasatch Advisors LP's ownership.

Risks

• As a Schedule 13G filing, it indicates passive investment, meaning Wasatch Advisors LP is not seeking to influence or control the issuer. However, significant ownership can still attract market attention and potential future shifts in strategy.
• The filing is dated October 9, 2026, but the event date is September 30, 2026, meaning market conditions may have changed since the acquisition.

Future Outlook

This filing is a snapshot of ownership and does not contain forward-looking statements or guidance from PDF Solutions Inc. The future outlook is implied by Wasatch Advisors LP's investment decision.

Management Comments

• "By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under 240.14a-11."
• "After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct."

Industry Context

StockSavvy.ai notes that significant institutional ownership, as reported in this Schedule 13G filing by Wasatch Advisors LP, is a common indicator of investor confidence in the semiconductor solutions sector, particularly for companies like PDF Solutions that operate in specialized markets.

Comparison to Industry Standards

• Schedule 13G filings are standard for institutional investors acquiring more than 5% of a company's stock. Wasatch Advisors LP's acquisition of 6.3% is a substantial but not controlling stake, typical for a passive investment strategy.
• Competitors in the electronic design automation (EDA) and semiconductor solutions space often see similar levels of institutional ownership, reflecting the capital-intensive nature of the industry and the need for sustained R&D.

Stakeholder Impact

• Shareholders: The acquisition by a professional investment manager may be viewed positively, potentially increasing demand for the stock and signaling confidence in the company's value.
• Management: The passive nature of the investment (as certified) means no immediate pressure for control changes, allowing management to focus on operations.

Next Steps

• Wasatch Advisors LP will continue to hold its shares in PDF Solutions Inc. in the ordinary course of business.
• Further filings may be required if Wasatch Advisors LP's ownership stake changes significantly.

Key Dates

Recommendation

This filing indicates a significant passive investment by Wasatch Advisors LP, suggesting a belief in the company's underlying value. However, it does not provide new operational or financial performance data for PDF Solutions Inc. itself. Therefore, a 'hold' recommendation is appropriate, pending further information on the company's performance and strategic direction.

Keywords

PDF Solutions, Wasatch Advisors LP, Schedule 13G, Beneficial Ownership, Common Stock, Investment Adviser, Shareholder