1 unchanged sentence
Insider Adoption or Termination of Trading Arrangements
−Removed: During the quarter ended March 31, 2026 , none of our directors or officers adopted or terminated a “Rule 10b5 - 1 trading arrangement” or “non-Rule 10b5 - 1 trading arrangement,” as those terms are defined in Regulation S-K, Item 408.
+Added: During the quarter ended June 30, 2026 , none of our directors or officers adopted or terminated a “Rule 10b5 - 1 trading arrangement” or “non-Rule 10b5 - 1 trading arrangement,” as those terms are defined in Regulation S-K, Item 408.
Incorporated by Reference
4 unchanged sentences
Amended and Restated Bylaws of PDF Solutions, Inc.
+Added: PDF Solutions, Inc.
+Added: ’ s Eleventh Amended and Restated 2011 Stock Incentive Plan
+Added: PDF Solutions, Inc.
+Added: ’ s Third Amended and Restated 2021 Employee Stock Purchase Plan
+Added: Form of Stock Unit Agreement under PDF Solutions, Inc.’s 2011 Stock Incentive Plan†
Certification of the principal executive officer pursuant to Exchange Act Rules 13a‑14(a) and 15d‑14(a), as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
4 unchanged sentences
Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.*
−Removed: The following financial statements from the Company’s Quarterly Report on Form 10‑Q for the quarter ended March 31, 2026, formatted in Inline XBRL:
+Added: The following financial statements from the Company’s Quarterly Report on Form 10‑Q for the quarter ended June 30, 2026, formatted in Inline XBRL:
(i) Condensed Consolidated Balance Sheets, (ii) Condensed Consolidated Statements of Operations and Comprehensive Income, (iii) Condensed Consolidated Statements of Stockholders’ Equity, (iv) Condensed Consolidated Statements of Cash Flows and (v) Notes to Condensed Consolidated Financial Statements, tagged as blocks of text and including detailed tags.
Cover Page Interactive Data File (formatted as Inline XBRL and contained in Exhibit 101).
+Added: † Indicates management contract or compensatory plan or arrangement.
* Furnished, and not filed.
2 unchanged sentences
PDF SOLUTIONS, INC.
+Added: August 6, 2026
President and Chief Executive Officer
(principal executive officer)
+Added: August 6, 2026
/s/ Adnan Raza
3 unchanged sentences
Compared sentence by sentence after normalising whitespace, quotation marks, case and digits, so re-formatting and restated figures do not read as changed language. Wording changes appear as one removal and one addition. The current filing and the prior one are authoritative.