UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Non-accelerated filer ☐ Smaller reporting company ☐ Emerging growth company ☐ FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2022 Or ☐ Transition Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the transition period from to . Commission file number: 002-25577 DIODES INCORPORATED (Exact name of registrant as ...