# EDGAR Filing Document

**Accession Number:** 0001193468
**File Stem:** 0001193468-26-000005
**Filing Date:** 2026-5
**Character Count:** 5448
**Document Hash:** edbd121801a641ff1fe307a12f607e58
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001193468-26-000005.hdr.sgml**: 20260513

**ACCESSION NUMBER**: 0001193468-26-000005

**CONFORMED SUBMISSION TYPE**: 3

**PUBLIC DOCUMENT COUNT**: 2

**CONFORMED PERIOD OF REPORT**: 20260511

**FILED AS OF DATE**: 20260513

**DATE AS OF CHANGE**: 20260513

**REPORTING-OWNER**: 

**OWNER DATA:**
- **COMPANY CONFORMED NAME:** RITTER PHILIP J
- **CENTRAL INDEX KEY:** 0001193468

**ORGANIZATION NAME:**

**FILING VALUES:**
- **FORM TYPE:** 3
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 002-25577
- **FILM NUMBER:** 26972970
**ISSUER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** DIODES INC /DEL/
- **CENTRAL INDEX KEY:** 0000029002
- **STANDARD INDUSTRIAL CLASSIFICATION:** SEMICONDUCTORS & RELATED DEVICES [3674]
- **ORGANIZATION NAME:** 04 Manufacturing
- **EIN:** 952039518
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**BUSINESS ADDRESS:**
- **STREET 1:** 4949 HEDGCOXE ROAD
- **STREET 2:** SUITE 200
- **CITY:** PLANO
- **STATE:** TX
- **ZIP:** 75024
- **BUSINESS PHONE:** 972-987-3900

**MAIL ADDRESS:**
- **STREET 1:** 4949 HEDGCOXE ROAD
- **STREET 2:** SUITE 200
- **CITY:** PLANO
- **STATE:** TX
- **ZIP:** 75024

## Ex-24

SPECIAL POWER OF ATTORNEY Exhibit 24

The undersigned, PHILIP J. RITTER, does hereby constitute and appoint BRETT R. WHITMIRE, of 5324 Seascape Lane, Plano, TX 75093, as his Attorney in Fact to act for and in the name, place, and stead of PHILIP J. RITTER, to make, execute, and deliver any and all documents or instruments, and do and perform any and all things and actions, which PHILIP J. RITTER might have done if personally present, which may be necessary or advisable in connection with the following:

To execute, deliver, and file all such documents and things, including, without limitation, reports and filings with the United States Securities and Exchange Commission, Internal Revenue Service, and Nasdaq Stock Exchange, as may be required to be executed, delivered, and filed by PHILIP J. RITTER in connection with the beneficial ownership by PHILIP J. RITTER of securities of Diodes Incorporated.

The undersigned further grants to the attorney in fact full authority to act in any manner both proper and necessary to the exercise of the foregoing powers, including the full power of substitution or revocation, and ratifies every act that he may lawfully do or purport to do, or may have done or purported to have done, in connection with any of the foregoing.

Executed on April 1, 2026

/s/ PHILIP J. RITTER

------

### UNITED STATES SECURITIES AND EXCHANGE COMMISSION
**Washington, D.C. 20549**

## FORM 3

### INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

[ ] Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

---

| | | |
|:---|:---|:---|
| **1. Name and Address of Reporting Person**<sup>*</sup><br>RITTER PHILIP J<br><sub>(Last) (First) (Middle)</sub><br>4949 HEDGCOXE RD.<br>STE 200<br><sub>(Street)</sub><br>PLANO, TX 75024<br><sub>(City) (State) (Zip)</sub> | **3. Issuer Name and Ticker or Trading Symbol**<br>DIODES INC /DEL/ [ DIOD ] | **5. If Amendment, Date of Original Filed (Month/Day/Year)**<br>  |
| **2. Date of Event Requiring Statement (Month/Day/Year)**<br>2026-05-11 | **4. Relationship of Reporting Person(s) to Issuer**<br>(Check all applicable)<br>[X] Director   [ ] 10% Owner<br>[ ] Officer (give title below)   [ ] Other (specify below)<br>_ _ | **6. Individual or Joint/Group Filing (Check Applicable Line)**<br>[X] Form filed by One Reporting Person<br>[ ] Form filed by More than One Reporting Person |

---

## Table I - Non-Derivative Securities Beneficially Owned

---

|  |  |  |  |
| --- | --- | --- | --- |
| 1. Title of Security | 2. Amount of Securities Beneficially Owned | 3. Ownership Form | 4. Nature of Indirect Beneficial Ownership |
| Diodes Incorporated Common Stock | 0 | D |  |

---

## Table II - Derivative Securities Beneficially Owned

---

|  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- |
| 1. Title of Derivative Security | 2. Date Exercisable and Expiration Date (Month/Day/Year) | 2. Date Exercisable and Expiration Date (Month/Day/Year) | 3. Title and Amount of Underlying Securities | 3. Title and Amount of Underlying Securities | 4. Conversion or Exercise Price | 5. Ownership Form | 6. Nature of Indirect Beneficial Ownership |
| 1. Title of Derivative Security | Date Exercisable | Expiration Date | Title | Amount or Number of Shares | 4. Conversion or Exercise Price | 5. Ownership Form | 6. Nature of Indirect Beneficial Ownership |
|  |  |  |  |  |  |  |  |

---

**Remarks:**
Exhibit 24 - Power of Attorney

**Signature:** Brett R. Whitmire as Power of Attorney For Philip J. Ritter  
**Date:** 2026-05-13

### Remarks:

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).

** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).

Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.

**Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.**