| 2026-08-06 | 10-Q | 10.3 | Form of Stock Unit Agreement under PDF Solutions, Inc.’s 2011 Stock Incentive Plan† |
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| 2026-06-18 | 8-K | 10.2 | PDF Solutions, Inc.’s Third Amended and Restated 2021 Employee Stock Purchase Plan |
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| 2026-06-18 | 8-K | 10.1 | PDF Solutions, Inc.’s Eleventh Amended and Restated 2011 Stock Incentive Plan |
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| 2026-04-24 | 8-K | 10.1 | First Amendment to Credit Agreement, dated as of April 23, 2026, by and among PDF Solutions, Inc., the subsidiary guarantors party thereto, Wells Fargo Bank, National Association and the lenders who are party to the Agreement and the lenders who may become a party to the Agreement. |
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| 2025-06-23 | 8-K | 10.2 | PDF Solutions, Inc.’s Second Amended and Restated 2021 Employee Stock Purchase Plan |
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| 2025-06-23 | 8-K | 10.1 | PDF Solutions, Inc.’s Tenth Amended and Restated 2011 Stock Incentive Plan |
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| 2025-03-07 | 8-K | 10.1 | Credit Agreement, dated as of March 7, 2025, by and among PDF Solutions, Inc., Wells Fargo Bank, National Association and the lenders who are party to the Agreement and the lenders who may become a party to the Agreement. |
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| 2025-02-27 | 10-K | 10.3 | PDF Solutions, Inc. Ninth Amended and Restated 2011 Stock Incentive Plan* |
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| 2024-02-27 | 10-K | 10.6 | Board of Directors Acceleration Agreement* |
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| 2023-08-08 | 10-Q | 10.2 | Addendum #1 to Revised 2020 Contract, signed March 17, 2023, by and between PDF Solutions, Inc. and Advantest America, Inc.† |
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| 2023-03-01 | 10-K | 10.13 | Amendment #2 to Amendment #1 to Software License and Related Services Agreement by and between PDF Solutions, Inc. and Advantest America, Inc., signed November 11, 2022, by and between PDF Solutions, Inc. and Advantest America, Inc.† |
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| 2022-11-10 | 10-Q | 10.1 | Amendment #1 to Amendment #1 to SLA, dated June 5, 2022, by and between PDF Solutions, Inc. and Advantest America, Inc.† |
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| 2020-11-06 | 10-Q | 10.3 | Master Commercial Terms and Support Services Agreement by and between PDF Solutions, Inc. and Advantest America, Inc. dated July 29, 2020.† + |
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| 2020-11-06 | 10-Q | 10.2 | Amended and Restated Master Development Agreement by and between PDF Solutions, Inc. and Advantest America, Inc. dated July 29, 2020.† + |
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| 2020-11-06 | 10-Q | 10.1 | Software License and Related Services Agreement by and between PDF Solutions, Inc. and Advantest America, Inc. dated March 25, 2020 and Amendment No.1 thereto dated July 29, 2020.† + |
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| 2020-03-12 | 8-K/A | 10.1 | Amended and Restated Offer Letter Agreement between Christine Russell and PDF Solutions, Inc. dated March 9, 2020. |
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| 2020-03-10 | 10-K | 10.17 | Employment offer to Adnan Raza, dated February 14, 2020†* |
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| 2019-05-07 | 10-Q | 10.1 | Offer letter to Cornelis D. Hartgring from PDF Solutions, Inc. dated October 26, 2018.*† |
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| 2018-11-09 | 10-Q | 10.1 | Employment offer to Christine A. Russell, dated July 31, 2018. |
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| 2016-03-03 | 8-K | 10.10 | Employment Agreement, dated February 26, 2016. |
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| 2013-10-31 | 8-K | 10.9 | Second Amendment to Office Lease dated October 10, 2013. |
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| 2013-08-07 | 10-Q | 10.11 | PDF Solutions, Inc. 2001 Employee Stock Purchase Plan (adopted by stockholders on May 18, 2010 and amended and restated by the Board of Directors on July 22, 2013). |
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| 2012-11-09 | 10-Q | 10.10 | Form of Stock Appreciation Right Agreement under PDF Solutions, Inc. 2011 Stock Incentive Plan. |
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| 2012-08-09 | 10-Q | 10.8 | Letter regarding extension of the temporary employment offer with Michael Shahbazian with PDF Solutions, Inc., dated May 9, 2012. |
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| 2012-03-15 | 10-K | 10.19 | Form of Stock Unit Agreement under PDF Solutions, Inc. 2011 Stock Incentive Plan |
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| 2012-03-15 | 10-K | 10.18 | Form of Stock Option Agreement (Non-statutory) under PDF Solutions, Inc. 2011 Stock Incentive Plan |
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| 2012-03-15 | 10-K | 10.15 | Offer Letter to Gregory Walker from PDF Solutions, Inc. dated November 1, 2011 (incorporated herein by reference to registrar’s Quarterly Report on Form 10-Q filed November 9, 2011.) |
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| 2012-03-15 | 10-K | 10.14 | Employment confirmation to Kimon Michaels from PDF Solutions, Inc. dated October 13, 2009 |
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| 2012-03-15 | 10-K | 10.13 | Employment confirmation to John Kibarian from PDF Solutions, Inc. dated October 13, 2009 |
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| 2011-11-09 | 10-Q | 10.7 | Employment Offer Letter to Gregory Walker from PDF Solutions, Inc. dated November 1, 2011. |
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| 2011-11-09 | 10-Q | 10.6 | Letter regarding extension of the temporary employment offer with Michael Shahbazian with PDF Solutions, Inc., dated October 5, 2011. |
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| 2011-08-09 | 10-Q | 10.5 | Employment Offer Letter to Michael Shahbazian from PDF Solutions, Inc. dated June 10, 2011. |
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| 2011-08-09 | 10-Q | 10.4 | Form of Restricted Stock Agreement (France) under the PDF Solutions, Inc. 2001 Stock Plan. |
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| 2011-08-09 | 10-Q | 10.3 | Form of Stock Option Agreement (France) under the PDF Solutions, Inc. 2001 Stock Plan. |
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| 2011-08-09 | 10-Q | 10.2 | Form of Restricted Stock Agreement under the PDF Solutions, Inc. 2001 Stock Plan. |
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| 2011-08-09 | 10-Q | 10.1 | Form of Nonstatutory Stock Option Agreement under the PDF Solutions, Inc. 2001 Stock Plan. |
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| 2011-03-23 | 10-K | 10.12 | SVTC-PDF SOLUTIONS LEASE BETWEEN PDF SOLUTIONS, INC. AND SVTC TECHNOLOGIES, LLC DATED AS OF SEPTEMBER 1, 2009 |
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| 2009-03-16 | 10-K | 10.17 | Form of Indemnification Agreement between PDF Solutions, Inc. and certain of its senior executive officers and directors. |
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| 2009-03-16 | 10-K | 10.16 | Amendment to Offer Letter, between Keith A. Jones and PDF Solutions, Inc., dated December 29, 2008. |
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