ALPHA & OMEGA SEMICONDUCTOR Ltd
For the period ended Jun 30, 2026. Filed Aug 27, 2026.
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FY2026 · Filed Aug 27, 2026
AOSL$23.61+27.8%Stored close · as of Nov 6, 2026
Contents
Schedule II - Valuation and Qualifying accounts
SCHEDULE II
VALUATION AND QUALIFYING ACCOUNTS
| Allowance | Allowance | Valuation Allowance | |
|---|---|---|---|
| for Doubtful | for Price | for Deferred | |
| Accounts | Adjustments | Tax Assets | |
| June 30, 2023 | $30 | $39,976 | $6,686 |
| Additions | — | 204,153 | 580 |
| Reductions | — | (202,440) | — |
| June 30, 2024 | $30 | $41,689 | $7,266 |
| Additions | — | 204,555 | 1,485 |
| Reductions | — | (205,442) | — |
| June 30, 2025 | $30 | $40,802 | $8,751 |
| Additions | — | 179,183 | 1,320 |
| Reductions | — | (181,286) | — |
| June 30, 2026 | $30 | $38,699 | $10,071 |
(b) Index to Exhibits:
| Number | Description |
| 3.1 | Memorandum of Association of Registrant (incorporated by reference to Exhibit 3.1 from Registration Statement on Form F-1 (File No. 333-165823) filed with the Commission on March 31, 2010) |
| 3.2 | Amended and Restated Bye-laws of Registrant (incorporated by reference to Exhibit 3.1 to the Current Report on Form 8-K filed with the Commission on November 12, 2015) |
| 3.3 | Amendment No. 1 to Amended and Restated Bye-Laws of Registrant (incorporated by reference to Exhibit 3.1 to the Current Report on Form 8-K filed with the Commission on November 14, 2017) |
| 4.1 | Form of Common Share Certificate (incorporated by reference to Exhibit 4.2 from Registration Statement on Form F-1 (File No. 333-165823) filed with the Commission on March 31, 2010) |
| 4.2 | Description of Securities of the Registrant (incorporated by reference to Exhibit 4.2 on to the Annual Report on Form 10-K (File No. 001-34717) filed with the Commission on August 29, 2023) |
| 10.1†† | Foundry Agreement dated as of January 10, 2002 between the Registrant and Shanghai Hua Hong NEC Electronics Company, Limited (incorporated by reference to Exhibit 10.16 from Registration Statement on Form F-1 (File No. 333-165823) filed with the Commission on March 31, 2010) |
| 10.2†† | First Addendum to Foundry Agreement dated as of July 28, 2005 between the Registrant and Shanghai Hua Hong NEC Electronics Company, Limited (incorporated by reference to Exhibit 10.17 from Registration Statement on Form F-1 (File No. 333-165823) initially filed with the Commission on March 31, 2010) |
| 10.3†† | Second Addendum to Foundry Agreement dated as of April 11, 2007 between the Registrant and Shanghai Hua Hong NEC Electronics Company, Limited (incorporated by reference to Exhibit 10.18 from Registration Statement on Form F-1 (File No. 333-165823) filed with the Commission on March 31, 2010) |
| 10.4†† | Foundry Service Agreement dated as of November 2, 2009 between Alpha & Omega Semiconductor (Macau), Ltd. and Shanghai Hua Hong NEC Electronics Company, Limited (incorporated by reference to Exhibit 10.6 from Registration Statement on Form F-1 (File No. 333-165823) filed with the Commission on March 31, 2010) |
| 10.5 | Non-Exclusive Distributor Agreement dated as of July 27, 2010 between Alpha & Omega Semiconductor (Hong Kong) Limited and Frontek Technology Corporation (incorporated by reference to Exhibit 4.17 from Annual Report on Form 20-F (File No. 001-34717) filed with the Commission on September 2, 2010) |
| 10.6†† | Supplement to Non-Exclusive Distributor Agreement dated as of July 27, 2010 between Alpha & Omega Semiconductor (Hong Kong) Limited and Frontek Technology Corporation (incorporated by reference to Exhibit 4.18 from Annual Report on Form 20-F (File No. 001-34717) filed with the Commission on September 2, 2010) |
| 10.7†† | First Amendment of Supplement to Distribution Agreement dated as of April 21, 2011 between Alpha & Omega Semiconductor (Hong Kong) Limited and Frontek Technology Corporation(incorporated by reference to Exhibit 10.15 from Annual Report Form 10-K (File No. 001-34717) filed with the Commission on September 9, 2011) |
| 10.8 | Non-Exclusive Distributor Agreement dated as of July 27, 2010 between Alpha & Omega Semiconductor (Hong Kong) Limited and Promate Electronic Co., Ltd. (incorporated by reference to Exhibit 4.19 from Annual Report on Form 20-F (File No. 001-34717) filed with the Commission on September 2, 2010) |
| 10.9†† | Supplement to Non-Exclusive Distributor Agreement dated as of July 27, 2010 between Alpha & Omega Semiconductor (Hong Kong) Limited and Promate Electronic Co., Ltd. (incorporated by reference to Exhibit 4.20 from Annual Report on Form 20-F (File No. 001-34717) filed with the Commission on September 2, 2010) |
| 10.10†† | First Amendment of Supplement to Distribution Agreement dated as of April 21, 2011 between Alpha & Omega Semiconductor (Hong Kong) Limited and Promate Electronic Co., Ltd. (incorporated by reference to Exhibit 10.18 from Annual Report Form 10-K (File No. 001-34717) filed with the Commission on September 9, 2011) |
| 10.11 | Supplement to Distribution Agreement dated as of July 27, 2010 between the Registrant and Promate Electronic Co., Ltd (incorporated by reference to Exhibit 10.2 from Quarterly Report on Form 10-Q (File No. 001-34717) filed with the Commission on February 6, 2015) |
| 10.12 | Lease dated as of December 23, 2009 between Alpha and Omega Semiconductor Incorporated and OA Oakmead II, LLC (incorporated by reference to Exhibit 10.19 from Registration Statement on Form F-1 (File No. 333-165823) filed with the Commission on March 31, 2010) |
| 10.13 | Guarantee dated as of January 5, 2010 between the Registrant and OA Oakmead II, LLC (incorporated by reference to Exhibit 10.20 from Registration Statement on Form F-1 (File No. 333-165823) filed with the Commission on March 31, 2010) |
| 10.14 | Third Addendum to Foundry Agreement dated as of March 6, 2012 by and among the Registrant and Shanghai Hua Hong NEC Electronics Company, Limited (incorporated by reference to Exhibit 10.34 from Annual Report on Form 10-K (File No. 001-34717) filed with the Commission on August 31, 2012) |
| 10.15 (+) | Form of Indemnification Agreement (incorporated by reference to Exhibit 10.1 to the Quarterly Report on Form 10-Q (File No. 001-34717) filed with the Commission on February 9, 2017) |
| 10.16 | First Amendment to Lease dated as of December 23, 2009 between Alpha and Omega Semiconductor Incorporated and ECI Five Oakmead, LLC (incorporated by reference to Exhibit 10.3 to the Quarterly Report on Form 10-Q (File No. 001-34717) filed with the Commission on May 11, 2020) |
| 10.17 | Amended and Restated Alpha & Omega Semiconductor Limited 2018 Omnibus Incentive Plan (as amended and restated effective as of November 11, 2025) (incorporated by reference to Appendix A to the Definitive Proxy Statement on Schedule 14A filed with the Commission on September 18, 2025) |
| 10.18 | Amendment to Market Performance Restricted Share Unit Agreement (incorporated by reference to Exhibit 10.1 to the Quarterly Report on Form 10-Q (File No. 001-34717) filed with the Commission on November 6, 2020) |
| 10.19 | Alpha & Omega Semiconductor Limited 2018 Employee Purchase Plan (as amended and restated effective as of November 7, 2024) (incorporated by reference to Appendix A to the definitive proxy statement on Schedule 14A (File No. 001-34717) filed with the Commission on September 25, 2024) |
| 10.20(+) | 2021 Officer Form Retention Agreement for Executive Officers of Alpha and Omega Semiconductor Limited (incorporated by reference to Exhibit 10.45 from Annual Report on Form 10-K (File No. 001-34717) filed with the Commission on August 30, 2021) |
| 10.21(+) | Second Amendment To Lease US Sunnyvale Office (incorporated by reference to Exhibit 10.47 from Annual Report on Form 10-K (File No. 001-34717) filed with the Commission on August 30, 2021) |
| 10.22(+) | Third Amendment To Lease US Sunnyvale Office (incorporated by reference to Exhibit 10.48 from Annual Report on Form 10-K (File No. 001-34717) filed with the Commission on August 30, 2021) |
| 10.23* | Amended and Restated Director Compensation Policy |
| 10.24 | Fourth Addendum to Foundry Agreement dated as of July 28, 2005 between the Registrant and Shanghai Hua Hong NEC Electronics Company, Limited (incorporated by reference to Exhibit 10.1 to the Quarterly Report on Form 10-Q (File No. 001-34717) filed with the Commission on May 10, 2022) |
| 10.25 | Fifth Addendum to Foundry Agreement dated as of July 28, 2005 between the Registrant and Shanghai Hua Hong NEC Electronics Company, Limited (incorporated by reference to Exhibit 10.2 to the Quarterly Report on Form 10-Q (File No. 001-34717) filed with the Commission on May 10, 2022) |
| 10.26(+) | Executive Chairman Employment Agreement (Mike Chang) (incorporated by reference to Exhibit 10.1 to the Quarterly Report on Form 10-Q (File No. 001-34717) filed with the Commission on May 8, 2023) |
| 10.27(+) | Chief Executive Officer Employment Agreement (Stephen Chang) (incorporated by reference to Exhibit 10.2 to the Quarterly Report on Form 10-Q (File No. 001-34717) filed with the Commission on May 8, 2023) |
| 10.28 | Market Performance Restricted Share Unit Agreement, (incorporated by reference to Exhibit 10.32 to the Annual Report on Form 10-K (File No. 001-34717) filed with the Commission on August 23, 2024) |
| 10.29 | The Fourth Supplement to Non-Exclusive Distributor Agreement dated as of January 1, 2024 between Alpha & Omega Semiconductor (Hong Kong) Limited and Frontek Technology Corporation, (incorporated by reference to Exhibit 10.1 to the Quarterly Report on Form 10-Q (File No. 001-34717) filed with the Commission on February 6, 2025) |
| 10.30 | Fifth Supplement to Distribution Agreement dated as of July 1, 2024 between Alpha & Omega Semiconductor (Hong Kong) Limited and Frontek Technology Corporation (incorporated by reference to Exhibit 10.2 to the Quarterly Report on Form 10-Q (File No. 001-34717) filed with the Commission on February 6, 2025) |
| 10.31 | Fourth Supplement to Distribution Agreement dated as of July 1, 2024 between Alpha & Omega Semiconductor (Hong Kong) Limited and Promate Electronic Co., Ltd. (incorporated by reference to Exhibit 10.3 to the Quarterly Report on Form 10-Q (File No. 001-34717) filed with the Commission on February 6, 2025) |
| 10.32 | Fifth Supplement to Distribution Agreement dated as of October 1, 2025 between Alpha & Omega Semiconductor (Hong Kong) Limited and Promate Electronic Co., Ltd. (incorporated by reference to Exhibit 10.2 to the Quarterly Report on Form 10-Q (File No. 001-34717) filed with the Commission on February 5, 2026) |
| 10.33 | Calendar Year 2026 Executive Incentive Cash Bonus Plan (incorporated by reference to Exhibit 10.1 to the Quarterly Report on Form 10Q (File No. 001-34717) filed with the Commission on May 6, 2026 |
| 10.34*(+) | Amendment to Employment Agreement, dated as of November 6, 2025, by and between the registrant and Dr. Mike Chang |
| 16.1 | Letter from Baker Tilly USA, LLP to the Securities and Exchange Commission (incorporated by reference to Exhibit 16.1 to the Current Report on Form 8-K (File No. 001-34717) filed with the Commission on November 25, 2024) |
| 19.1 | Statement of Company Policy Regarding Insider Trading amended and restated on May 11, 2023 (incorporated by reference to Exhibit 19.1 to the Annual Report on Form 10-K (File No. 001-34717) filed with the Commission on August 23, 2024). |
| 21.1* | List of Subsidiaries of the Registrant |
| 23.1* | Consent of Deloitte & Touche LLP, independent registered public accounting firm |
| 23.2* | Consent of Baker Tilly US, LLP, independent registered public accounting firm |
| 31.1* | Certification of Chief Executive Officer required by Rule 13(a)-14(a) under the Exchange Act |
| 31.2* | Certification of Chief Financial Officer required by Rule 13(a)-14(a) under the Exchange Act |
| 32.1* | Certification of Chief Executive Officer required by Rule 13a-14(b) under the Exchange Act and Section 1350 of Chapter 63 of Title 18 of the United States Code |
| 32.2* | Certification of Chief Financial Officer required by Rule 13a-14(b) under the Exchange Act and Section 1350 of Chapter 63 of Title 18 of the United States Code |
| 97 | Compensation of Recoupment Policy dated October 2, 2023 (incorporated by reference to Exhibit 97 to the Annual Report on Form 10-K (File No. 001-34717) filed with the Commission on August 23, 2024) |
| 99.1* | Chongqing SIMIC Semiconductor Limited Unaudited Financial Statements as of and for the year ended December 31, 2025 |
| 99.2* | Chongqing Alpha and Omega Semiconductor Limited Report of Independent Auditor as of and for the years ended December 31, 2024 and December 31, 2023 |
| 101.INS | XBRL Instance |
| 101.SCH | XBRL Taxonomy Extension Schema |
| 101.CAL | XBRL Taxonomy Extension Calculation |
| 101.DEF | XBRL Taxonomy Extension Definition |
| 101.LAB | XBRL Taxonomy Extension Labels |
| 101.PRE | XBRL Taxonomy Extension Presentation |
- Filed with this Annual Report on Form 10-K.
†† Confidential treatment has been granted for certain information contained in this document pursuant to an order of the Securities and Exchange Commission. Such information has been omitted and filed separately with the Securities and Exchange Commission.
(+) Indicates management contract or compensatory plan or arrangement.
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