UNITED STATES
SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 14A

Proxy Statement Pursuant to Section 14(a) of the

Securities Exchange Act of 1934

(Amendment No. )

Filed by the Registrant  Filed by a Party other than the Registrant 

Check the appropriate box:

DIODES INCORPORATED

(Name of registrant as specified in its charter)

(Name of person(s) filing proxy statement, if other than the registrant)

Payment of Filing Fee (Check the appropriate box):

DIODES INCORPORATED

Notice of Annual Meeting of Stockholders

To Be Held May 29, 2024

Notice is hereby given that the annual meeting (the “Meeting”) of the stockholders of Diodes Incorporated (the “Company”) will be held online via live audio webcast at www.proxydocs.com/DIOD on Wednesday, May 29, 2024, at 9:00 a.m. (Central Time). The Meeting will be conducted completely virtually, via a live audio webcast; there will be no physical meeting location. Even though our Meeting is being held virtually, stockholders will still have the ability to participate in and hear others during the Meeting. Questions should be submitted when registering to attend the Meeting. The Meeting is being held for the following purposes:

It is possible that an adjournment or postponement may be necessary that makes us unable to hold the Meeting on the date as planned. If such an adjournment or postponement is made, the Company will notify stockholders through the issuance of a press release and the filing of definitive additional soliciting material with the Securities and Exchange Commission.

Only persons who were stockholders of record at the close of business on April 1, 2024 are entitled to notice of and to vote either by proxy or at the Meeting or any adjournment or postponement thereof.

The proxy statement, which accompanies this Notice, contains additional information regarding the proposals to be considered at the Meeting, and stockholders are encouraged to read it in its entirety.

The Company has elected to provide access to our proxy materials by notifying you of the availability of our proxy statement and our fiscal 2023 Annual Report to Stockholders over the Internet at www.proxydocs.com/DIOD. Stockholders may also obtain a printed copy of the proxy materials free of charge by following the instructions provided in the Notice of Internet Availability of Proxy Materials that will be first mailed to stockholders on or about April 19, 2024 or in the enclosed proxy statement.

As set forth in the enclosed proxy statement, proxies are being solicited by and on behalf of the Board of Directors of the Company. All proposals set forth above are proposals of the Board of Directors.

Whether or not you plan to participate in the virtual Meeting, YOUR VOTE IS IMPORTANT. Please follow the instructions enclosed to ensure that your shares are voted. If you participate in the Meeting, you may revoke your proxy at any time prior to its exercise at the Meeting.

Dated at Plano, Texas, this 19th day of April, 2024.

By Order of the Board of Directors,

DIODES INCORPORATED

Richard D. White,
Secretary

IF YOU PLAN TO ATTEND THE MEETING

If you plan to attend the Meeting online you must be registered no later than 5:00 p.m. Central Time on May 28, 2024. To register go to www.proxydocs.com/DIOD. Upon completing your registration, you will receive further instructions via email, including your unique links that will allow you access to the Meeting and will also permit you to submit questions in advance of the Meeting. Please be sure to follow instructions found on your proxy card and subsequent instructions that will be delivered to you via email. You will be able to listen, vote, and submit questions from any remote location that has Internet connectivity. Technical assistance is available as part of the instructions.

TABLE OF CONTENTS

DIODES INCORPORATED

4949 Hedgcoxe Road, Suite 200

Plano, Texas 75024

(972) 987-3900

PROXY STATEMENT

ANNUAL MEETING: May 29, 2024

GENERAL INFORMATION

This proxy statement (“Proxy Statement”) is furnished in connection with the solicitation of proxies by the Board of Directors (the “Board”) of Diodes Incorporated (the “Company”) for use at the annual meeting (the “Meeting”) of the stockholders of the Company to be held online via live audio webcast at www.proxydocs.com/DIOD on Wednesday, May 29, 2024, at 9:00 a.m. (Central Time), and at any adjournment or postponement thereof. Only stockholders of record at the close of business on April 1, 2024 (the “Record Date”) are entitled to notice of and to vote by proxy or at the Meeting or any adjournment or postponement thereof.

Matters to be Considered at the Meeting

The matters to be considered and voted upon at the Meeting will be:

Voting Recommendations of the Board

Our Board recommends that you vote your shares “FOR” each of the nominees to the Board, “FOR” the approval of executive compensation, and “FOR” the ratification of the appointment of Moss Adams LLP.

Voting Shares Held in “Street Name”

Brokerage firms who are members of the New York Stock Exchange cannot vote your shares held in street name in the election of directors or on executive compensation, if you fail to instruct the organization how to vote such shares. Therefore, it is very important that you provide instructions on how to vote any shares beneficially owned by you in street name.

Internet Access to Proxy Materials

Under rules adopted by the Securities and Exchange Commission (the “SEC”), the Company has elected to provide access to our proxy materials over the Internet at www.proxydocs.com/DIOD. Stockholders will not receive printed copies of the proxy materials unless they have requested us to provide proxy materials in printed form. On or about April 19, 2024, a Notice of Internet Availability of Proxy Materials (the “Notice”) will be first sent to our stockholders of record and beneficial owners. All stockholders receiving the Notice can request a printed copy of the proxy materials.

The Notice provides you with instructions regarding how to:

Choosing to receive future proxy materials by email will save us the cost of printing and mailing documents to you and will reduce the impact of our annual meetings on the environment. If you choose to receive future proxy materials by email, you will receive an email next year with instructions containing a link to those materials and a link to the proxy voting site. Your election to receive proxy materials by email will remain in effect until you terminate it, and it is your responsibility to notify us of any change to your email address given to us.

The proxy materials include:

If you request printed copies of the proxy materials by mail, these materials will also include a proxy card.

How to Vote

Stockholder of Record. If your shares are registered directly in your name with our transfer agent, Continental Stock Transfer & Trust Company, you are considered the stockholder of record with respect to those shares, and the Notice was sent directly to you by the Company. If you are a stockholder of record, you may attend the Meeting and vote in person via the Internet at www.proxydocs.com/DIOD.

If you do not wish to attend the Meeting and vote online during the Meeting, you may vote by proxy. There are three ways to vote by proxy. You may submit a proxy by telephone by calling (855) 686-4804 and following the instructions provided. You may submit a proxy over the Internet at www.proxypush.com/diod by following the instructions provided. If you request and receive a printed copy of the proxy materials by mail, you can submit a proxy by signing and dating the enclosed proxy card and either mailing it in the postage-paid envelope provided to the address stated on the proxy card or transmitting it by facsimile to the Inspector of Elections at (972) 987-3900.

Telephone and Internet voting facilities for stockholders will be available 24 hours a day and will close at 9:00 a.m. (Central Time) on May 29, 2024. If a proxy is properly submitted and is not revoked, the proxy will be voted at the Meeting in accordance with the stockholder’s instructions indicated on the proxy. If no instructions are indicated on the proxy with respect to any matter, the proxy will be voted on such matter as follows: “FOR” the election of the Board’s nominees, “FOR” the approval of executive compensation, “FOR” ratification of the appointment of Moss Adams LLP as our independent registered public accounting firm for the fiscal year ending December 31, 2024, and in accordance with the recommendations of the Board as to any other matter that may properly be brought before the Meeting or any adjournment or postponement thereof.

Beneficial Owner of Shares Held in Street Name. If your shares are held in an account at a brokerage firm, bank, broker-dealer, or other similar organization, then you are the beneficial owner of shares held in “street name,” and the Notice was forwarded to you by that organization. The organization holding your shares is considered the stockholder of record for purposes of voting at the Meeting. As a beneficial owner, you have the right to direct that organization on how to vote the shares held in your account by following the instructions they provided. If you wish to attend the Meeting and vote during the Meeting in person via the Internet, you must obtain a proxy executed in your favor from the organization that holds your shares.

Even if you plan to attend the Meeting, the Company recommends that you also submit your proxy or voting instructions so that your vote will be counted if you later decide not to attend the Meeting.

How to Change or Revoke Your Vote

You may change your vote at any time before the vote at the Meeting. If you are a stockholder of record, you may change your vote by submitting a proxy over the Internet or telephone on a later date (only your last Internet or telephone proxy will be counted), or by filing a written revocation, or a duly executed proxy card bearing a later date, with the Company’s Secretary at the Meeting or at our offices located at 4949 Hedgcoxe Road, Suite 200, Plano, Texas 75024 provided that any such written revocation or duly executed proxy card bearing a later date must be received at such offices no later than May 28, 2024. You may also change your vote by attending the Meeting and voting in person via the Internet. Attending the Meeting will not automatically revoke a previously granted proxy unless you vote at the Meeting or file a written revocation with the Company’s Secretary at or before the Meeting.

If you are a beneficial owner of shares held in street name, you may change your vote by submitting new voting instructions to the brokerage firm, bank, broker-dealer or other organization holding your shares by following the instructions they provided or, if you obtained a proxy in your favor from that organization, by attending the Meeting and voting in person via the Internet.

Meeting Admission

This year our Meeting will be a completely virtual meeting, which will be conducted via live audio webcast at www.proxydocs.com/DIOD. You are entitled to participate in the Meeting only if you were a holder of the Company's Common Stock at the close of business on April 1, 2024, which is the record date for the Meeting, or if you hold a valid proxy. If you plan to attend the Meeting online you must be registered no later than 5:00 p.m. (Central Time) on May 28, 2024. Upon completing your registration, you will receive further instructions via email, including your unique links that will allow you access to the Meeting and will also permit you to submit questions prior to the Meeting. Please be sure to follow instructions found on your proxy card and subsequent instructions that will be delivered to you via email. You will be able to participate in, and hear others from, any remote location that has Internet connectivity. Technical assistance is available as part of the instructions.

Voting Rights

The authorized capital of the Company consists of (i) 70,000,000 shares of Common Stock, par value $0.66-2/3 per share (“Common Stock”), of which 46,178,622 shares were issued and outstanding on the Record Date, and (ii) 1,000,000 shares of Preferred Stock, par value $1.00 per share (“Preferred Stock”), none of which were issued and outstanding on the Record Date.

A majority of the shares of Common Stock issued and outstanding and entitled to vote at the Meeting, present either in person via the Internet or by proxy, constitutes a quorum for the conduct of business at the Meeting. Votes withheld, abstentions and “broker non-votes” (as defined below) will be counted for the purpose of determining the presence of a quorum.

Each stockholder is entitled to one vote, in person via the Internet or by proxy, for each share of Common Stock standing in his or her name on the books of the Company at the close of business on the Record Date on any matter submitted to the stockholders, except that in connection with the election of directors, each stockholder has the right to cumulate votes. Cumulative voting entitles a stockholder to give one candidate a number of votes equal to the number of directors to be elected multiplied by the number of shares of Common Stock owned by such stockholder, or to distribute such stockholder’s votes on the same principle among as many candidates and in such manner as the stockholder shall desire.

If you are a stockholder of record and wish to exercise cumulative voting rights, you must submit a proxy by mail. Your proxy card or ballot must specify how you want to allocate your votes among the nominees. Telephone and Internet voting facilities do not accommodate cumulative voting. If you hold your shares in street name, contact your brokerage firm, bank, broker-dealer, or other similar organization for directions on how to exercise cumulative voting rights using their voting instruction card, or to request a legal proxy so that you can vote your shares directly. Discretionary authority to cumulate votes is hereby solicited by the Board. If you return a signed proxy card or submit voting instructions in writing without providing instructions about cumulative voting, or if you submit a proxy by telephone or in person via the Internet, you will confer on the designated Proxyholders named below discretionary authority to exercise cumulative voting. If they

elect to do so, they will be authorized, in their discretion, to cast your votes for some or all of the nominees in the manner recommended by the Board or otherwise in the discretion of the Proxyholders. However, they will not cast any of your votes for a nominee as to whom you have instructed them on your proxy card, voting instruction card or otherwise to withhold a vote. If you do not wish to grant the Proxyholders authority to cumulate your votes in the election of directors, you must explicitly state that objection on your proxy card or voting instruction card, as applicable.

For Proposal 1, our Bylaws provide that, in the election of directors, the candidates receiving the highest number of votes, up to the number of directors to be elected, shall be elected; provided, however, that the Board has adopted a policy requiring that, other than elections in which the number of director nominees exceeds the number of directors to be elected, each nominee will submit a resignation for consideration by the Board promptly following the election if he or she receives a greater number of votes “WITHHELD” than votes “FOR.” Abstentions and broker non‑votes are not considered a vote cast and, therefore, will have no effect with respect to the election of directors other than to reduce the number of affirmative votes required to elect a director. “Broker non‑votes” are shares of stock held in record name by brokers or nominees for which instructions have not been received from the beneficial owners or persons entitled to vote and the broker or nominee does not have discretionary voting power under applicable rules or the instrument under which it serves in such capacity. See “Proposal One – Election of Directors” and “Corporate Governance – Director Resignation Policy.”

Proposals 2 and 3 require the affirmative vote of the holders of a majority of the outstanding shares of Common Stock present, in person via the Internet or by proxy, and entitled to vote on the proposal at the Meeting. Abstentions will be included in the number of votes present and entitled to vote on these proposals and, accordingly, will have the effect of a vote “AGAINST” the proposal. Broker non-votes with respect to these proposals will not be counted as shares present and entitled to vote on these proposals and, accordingly, will not have any effect with respect to the approval of these proposals (other than to reduce the number of affirmative votes required to approve the proposal). However, the Board and the Compensation Committee will review the result of this vote and take it into consideration when making future decisions regarding executive compensation. Although the appointment of Moss Adams LLP as the Company’s independent registered public accounting firm for the fiscal year ending December 31, 2024 is not required to be submitted to a vote of stockholders, the Audit Committee believes that it is appropriate as a matter of policy to request that the stockholders ratify the appointment of the Company’s independent registered public accounting firm. If the stockholders do not ratify the appointment, which requires the affirmative vote of a majority of the outstanding shares of Common Stock present, in person via the Internet or by proxy, and entitled to vote on the proposal at the Meeting, the Board will consider the selection of another independent registered public accounting firm.

Of the shares of Common Stock outstanding on the Record Date, 1,093,048 shares (or approximately 2.4%) were beneficially owned by directors and executive officers of the Company. Each of the directors and executive officers have informed the Company that they will vote “FOR” the election of the Board’s nominees named herein, “FOR” the approval of executive compensation and “FOR” ratification of the appointment of Moss Adams LLP as the Company’s independent registered public accounting firm for the fiscal year ending December 31, 2024.

Organizations holding Common Stock in “street name” that are members of a stock exchange are required by the rules of the applicable stock exchange to transmit the proxy materials to the beneficial owner of the Common Stock and to solicit voting instructions with respect to the matters submitted to the stockholders. If the organization has not received instructions from the beneficial owner by the date specified in the statement accompanying such proxy materials, the organization may give or authorize the giving of a proxy to vote the Common Stock in its discretion as to “routine” matters, but not as to “non-routine” matters. When an organization is unable to vote a client’s shares on a proposal, the missing votes are referred to as “broker non-votes.” If you hold Common Stock in “street name” and you fail to instruct the organization that holds your shares as to how to vote such shares, that organization may, in its discretion, vote such Common Stock “FOR” ratification of the appointment of Moss Adams LLP as the Company’s independent registered public accounting firm for the fiscal year ending December 31, 2024, which is considered a routine matter, but not with respect to the election of the nominees to the Board or the advisory vote on executive compensation, each of which is considered a non-routine matter.

Procedures for Stockholder Nominations and Proposals

Under the Company’s Bylaws, any stockholder generally may submit proposals or nominate one or more persons for election as directors by following the procedures described in this Proxy Statement under “Proposals of Stockholders and Stockholder Nominations for 2025 Annual Meeting.” No notice of a stockholder proposal or nomination was timely received in connection with the Meeting.

Cost of Proxy Solicitation

This proxy solicitation is made by the Board, and the Company will bear the costs of this solicitation, including the expense of preparing, assembling, printing and mailing this Proxy Statement and any other material used in this proxy solicitation. If it should appear desirable to do so to ensure adequate representation at the Meeting, officers and regular employees may communicate with stockholders of record, beneficial owners, banks, brokerage houses, custodians, nominees and others, by telephone, facsimile transmissions, email or in person via the Internet to request that the proxies be furnished. No additional compensation will be paid for these services to officers or employees of the Company. The Company will reimburse banks, brokerage houses, and other custodians, nominees and fiduciaries, for their reasonable expenses in forwarding proxy materials to their principals. The Company has not engaged a proxy solicitor at this time, but the Board may determine it is necessary to employ an outside firm to assist in the solicitation process. If so, the Company will pay the proxy solicitor its reasonable and customary fees, estimated not to exceed $15,000 plus reasonable out-of-pocket expenses.

Other Business

As of the date of this Proxy Statement, the Board knows of no business to be presented for consideration at the Meeting other than as stated in the Notice of Annual Meeting of Stockholders. However, if any other matters properly come before the Meeting, including a motion to adjourn the Meeting to another time or place in order to solicit additional proxies in favor of the recommendations of the Board, the designated proxyholders, Dr. Keh-Shew Lu, the Company’s Chairman and Chief Executive Officer, and Brett Whitmire, the Company’s Chief Financial Officer (the “Proxyholders”), will vote the shares represented by the proxies on such matters in accordance with the recommendation of the Board, and authority to do so is included in the proxy. Such authorization includes authority to appoint a substitute nominee or nominees to the Board’s nominees identified herein where death, illness or other circumstances arise which prevent any such nominee from serving in such position and to vote such proxy for such substitute nominee.

SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT

The following table sets forth the beneficial ownership of Common Stock as of the Record Date by each person known to the Company to be the beneficial owner of five percent (5%) or more of the outstanding shares of Common Stock (other than depositories).

(1) The named stockholder has sole voting power and investment power with respect to the shares listed, except as indicated below.

(2) Based on 46,178,622 shares outstanding as of the Record Date.

(3) Based solely on information provided by BlackRock in Schedule 13G/A filed with the SEC on January 22, 2024, reporting beneficial ownership of the Company’s Common Stock. According to the Schedule 13G/A, BlackRock has sole voting power with respect to 7,152,592 shares, has sole dispositive power with respect to 7,245,208 shares and has neither shared voting power nor shared dispositive power with respect to any shares.

(4) Based solely on information provided by Vanguard in Schedule 13G/A filed with the SEC on February 13, 2024, reporting beneficial ownership of the Company’s Common Stock. According to the Schedule 13G/A, Vanguard has shared voting power with respect to 72,143 shares, has sole dispositive power with respect to 5,529,481 shares and has shared dispositive power with respect to 121,246 shares.

(5) Based solely on information provided by EARNEST in Schedule 13G/A filed with the SEC on March 11, 2024, reporting beneficial ownership of the Company’s Common Stock. According to the Schedule 13G/A, EARNEST has sole voting power with respect to 1,739,429 shares, has sole dispositive power with respect to 2,456,093 shares, and has shared voting power with respect to 403,711 shares.

The following table sets forth the beneficial ownership of Common Stock of the Company as of the Record Date by (i) each director and nominee of the Company, (ii) each Named Executive Officer (“NEO”) of the Company (as defined below), and (iii) all directors, nominees and executive officers of the Company as a group.

* Indicates less than 1%.

(1) Consists of shares of Common Stock that the named individual has the right to acquire within sixty (60) days after the Record Date by exercising stock options or the vesting of restricted stock units (“RSUs”) or performance stock units (“PSUs”). For further discussion on the Company’s use of equity awards, see “Compensation Discussion and Analysis – Principal Components of Compensation - Long-Term Incentive (LTI) Plan.”

(2) The named stockholder has sole voting power and investment power with respect to the shares listed, except as indicated and subject to community property laws where applicable.

(3) Under Rule 13d-3 of the Securities Exchange Act of 1934 (the “Exchange Act”), certain shares may be deemed to be beneficially owned by more than one person (for example, if a person shares the power to vote or the power to dispose of the shares). In addition, under Rule 13d-3(d)(1) of the Exchange Act, shares which the person (or group) has the right to acquire within sixty (60) days after the Record Date are deemed to be outstanding in calculating the beneficial ownership and the percentage ownership of the person (or group) but are not deemed to be outstanding as to any other person or group. As a result, the percentage of outstanding shares of any person as shown in this table does not necessarily reflect the person’s actual ownership of voting power with respect to the number of shares of Common Stock actually outstanding at the Record Date.

(4) Percent of class is based on 46,178,622 shares of the Common Stock of the Company outstanding as of the Record Date.

(5) Dr. Lu is Chairman of the Board and the Chief Executive Officer of the Company, and an NEO.

(6) Includes 46,150 shares of Common Stock held in the name of an UTMA (Custodial) Trust, and 285,801 shares held in the name of the Lu Grandchildren’s Trust. Dr. Lu is a co-trustee of the Lu Family Revocable Trust, the UTMA (Custodial) Trust and the Lu Grandchildren’s Trust. Dr. Lu has voting and investment authority over these shares.

(7) Includes 21,498 shares that all directors and executive officers of the Company have the right to acquire within sixty (60) days after the Record Date, by exercising stock options or the vesting of RSUs, but excludes an additional 512,814 shares that all directors and executive officers of the Company will have the right to acquire upon the vesting of RSUs and PSUs, which may vest in installments more than sixty (60) days after the Record Date.

(8) Does not include 25,000, 6,100, 22,000 and 7,200 shares of Common Stock subject to PSUs granted February 1, 2024 to Messrs. Lu, Whitmire, Yu and Tang, respectively, that vest only if (i) the Company achieves a targeted Non-GAAP operating income for 2024 through 2026 and (ii) the executive continues to provide services to the Company.

Does not include 42,000, 9,000, 13,000 and 9,000 shares of Common Stock subject to PSUs granted February 1, 2023 to Messrs. Lu, Whitmire, Yu and Tang, respectively, that vest only if (i) the Company achieves a targeted Non-GAAP operating income for 2023 through 2025 and (ii) the executive continues to provide services to the Company.

Does not include 32,000, 7,600, 8,500, 7,600 and 3,067 shares of Common Stock subject to PSUs granted February 1, 2022 to Messrs. Lu, Whitmire, Yu, Tang and Ms. Holland, respectively, that vest only if (i) the Company achieves a targeted Non-GAAP operating income for 2022 through 2024 and (ii) the executive continues to provide services to the Company.

Does not include 4,500 shares of Common Stock subject to RSUs granted on May 24, 2023 to Dr. Lu that vest in three equal installments on May 24, 2025, 2026, and 2027, if the executive continues to provide services to the Company.

Does not include 25,000, 6,100, 22,000 and 7,200 shares of Common Stock subject to RSUs granted February 1, 2024 to Messrs. Lu, Whitmire, Yu and Tang, respectively, that vest in four equal installments on February 1, 2025, 2026, 2027 and 2028, if the executive continues to provide services to the Company.

Does not include 31,500, 6,750, 9,750 and 6,750 shares of Common Stock subject to RSUs granted February 1, 2023 to Messrs. Lu, Whitmire, Yu and Tang, respectively, that vest in three equal installments on February 1, 2025, 2026 and 2027, if the executive continues to provide services to the Company.

Does not include 2,500 shares of Common Stock subject to RSUs granted on May 26, 2022 to Dr. Lu that vest in two equal installments on May 26, 2025 and 2026, if the executive continues to provide services to the Company.

Does not include 16,000, 3,800, 4,250, 3,800 and 4,600 shares of Common Stock subject to RSUs granted February 1, 2022 to Messrs. Lu, Whitmire, Yu, and Tang and Ms. Holland, respectively, that vest in two equal installments on February 1, 2025 and 2026 if the executive continues to provide services to the Company.

Does not include 1,250 shares of Common Stock subject to RSUs granted on May 24, 2021 to Dr. Lu that vest on May 24, 2025, if the executive continues to provide services to the Company.

Does not include 8,000, 1,900, 2,125, 1,900 and 2,300 shares of Common Stock subject to RSUs granted on February 8, 2021 to Messrs. Lu, Whitmire, Yu, Tang and Ms. Holland, respectively, that vest on February 24, 2025, if the executive continues to provide services to the Company.

Does not include 2,000 shares of Common Stock subject to RSUs granted on July 1, 2020 to Mr. Yu that vest on July 1, 2024, if the executive continues to provide services to the Company.

For further discussion on the operating income performance goal and service condition related to these grants, see “Compensation Discussion and Analysis – Principal Components of Compensation - Long-Term Incentive (LTI) Plan.”

(9) Mr. Michael R. Giordano and Mr. Peter M. Menard are not standing for reelection at the Meeting.

(10) Mr. Yu is President of the Company and an NEO.

(11) Ms. Holland retired as an executive officer effective March 31, 2023.

PROPOSAL ONE

ELECTION OF DIRECTORS

The Company’s Bylaws provide that the number of directors shall be determined from time to time by the Board, but may not be less than five nor more than seventeen. Currently the Board consists of eight directors. Mr. Michael R. Giordano and Mr. Peter M. Menard will not be standing for reelection at the Meeting and a new candidate, Mr. Robert E. Feiger, will be nominated for election. The Company’s Bylaws further provide for the election of each director at each annual meeting of stockholders. Seven directors will be nominated for election at the Meeting, leaving one vacancy on the Board. Proxies cannot be voted for a greater number of persons than the number of nominees named.

The persons nominated have been nominated for election to the Board to serve until the next annual meeting of stockholders and until their respective successors have been elected and qualified. All nominees, except Mr. Feiger, are currently directors of the Company, and all nominees have indicated their willingness to serve. Unless otherwise instructed, proxies will be voted in such a way as to elect as many of these nominees as possible under applicable voting rules. In the event that any of the nominees should be unable or unwilling to serve as a director, proxies will be voted for the election of such substitute nominees, if any, as shall be designated by the Board. The Board has no reason to believe that any nominee will be unable or unwilling to serve.

The seven nominees who receive the highest number of affirmative votes will be elected. The Board has adopted a policy requiring that in an uncontested election (such as the election held at the Meeting), each nominee will submit an irrevocable resignation promptly following the election if he or she fails to receive a majority of votes cast. An uncontested election means that there are as many candidates standing for election as there are directors to be elected a the Meeting. A majority of votes cast means that the number of shares cast “FOR” a director’s election exceeds the number of votes “WITHHELD.” See “Corporate Governance – Director Resignation Policy.”

None of the nominees were selected pursuant to any arrangement or understanding, other than that with the directors of the Company acting within their capacity as such. Mr. Gary Yu is married to the niece of Dr. Keh-Shew Lu. Other than the aforementioned relationship between Mr. Yu and Dr. Lu, there are no family relationships among the directors of the Company as of the date hereof, and, except as set forth below, as of the date hereof, no directorships are now, or in the past five years have been, held by any director in a company that has a class of securities registered pursuant to Section 12 of the Exchange Act or subject to the requirements of Section 15(d) of the Exchange Act or any company registered as an investment company under the Investment Company Act of 1940.

The following table and discussion sets forth certain biographical information concerning the nominees of the Company as of the Record Date:

Board Diversity

In accordance with Nasdaq Listing Rule 5605(f), the following chart sets forth certain self-identified personal demographic characteristics of the nominees for 2024 and 2023:

Keh-Shew Lu

Chairman of the Board, Chief Executive Officer, and Director

Member, Risk Oversight Committee

Dr. Lu was elected Chairman of the Board in May 2020 and appointed President and Chief Executive Officer of the Company in June 2005 after serving on the Board since 2001. Dr. Lu is also a board member of Lite-On Technology Corporation, a publicly held company. Dr. Lu is the founding Chairman of the Asian American Citizen’s Council. From 2001 to 2005, Dr. Lu was a partner of the WK Technology Venture Fund. From 1998 to 2001, Dr. Lu served as Senior Vice President and General Manager of Worldwide Mixed-Signal and Logic Products of Texas Instruments (“TI”). His responsibilities included all aspects of the analog, mixed-signal and logic products for TI’s worldwide business, including design, process and product development, manufacturing and marketing. From 1996 to 1998, Dr. Lu was the manager of TI’s worldwide memory business. In addition, he served as the President of TI Asia from 1994 to 1997 where he supervised all of TI activities in Asia, excluding Japan. Dr. Lu holds a bachelor’s degree in Electrical Engineering from the National Cheng Kung University in Taiwan, and a master’s degree and a doctorate in Electrical Engineering from Texas Tech University.

Having worked in the semiconductor industry for more than 40 years and, particularly, having served in various managerial and senior executive capacities at TI, Dr. Lu possesses a wealth of semiconductor management experience. Dr. Lu is also an experienced board leader and member, having served for many years on behalf of several public and private companies.

Angie Chen Button

Lead Independent Director

Chair, Compensation Committee

Chair, Governance and Stockholder Relations Committee

Ms. Button has served as a representative in the State of Texas House of Representatives since 2009. The only Asian American Woman legislator in Texas, she currently chairs the International Relations and Economic Development Committee, and has previously served as Chair of the Urban Affairs Committee, as Chair of the Economic and Small Business Development Committee, as Vice Chair of the Technology Committee, sat on the Appropriations (Budget) Committee, and has sat and currently serves on the Ways and Means (Taxation) Committee. A CPA, Ms. Button worked for Texas Instruments for over 30 years in various auditing, finance, business development, procurement, and international marketing positions. She also served on the Audit Committee of the Dallas Area Rapid Transit Board. Texas Monthly named Ms. Button as a “Top 10 Best Legislator” in 2021 and 2023; the Texas Healthcare & Bioscience Institute awarded her its “Luminary Award” in 2023; and the Texas Association for the Education of Young Children awarded her as its “Elected Official of the Year” in 2021. As a state representative, she brings experience and connections in dealing with government officials and business leaders, including promoting international business and trade.

Ms. Button received her bachelor’s degree in Accounting from National Taiwan University in 1976, her master’s degree in Public Finance from National Chengchi University in 1978, and her master’s degree in Management Science from University of Texas at Dallas in 1980. Ms. Button is a co-founder of the DFW Asian American Citizens Council. Ms. Button provides the Board with semiconductor industry experience, leadership skills as well as state and national governmental knowledge. Ms. Button is not related to Mr. Warren Chen.

Elizabeth Bull

Independent Director

Chair, Audit Committee (Audit Committee Financial Expert)

Member, Compensation Committee

Ms. Bull is the former Chief Financial Officer of Communities Foundation of Texas ("CFT"). CFT is a Dallas-based non-profit grant-making organization and is one of the largest community foundations in the nation, with more than $1.5 billion in assets. In her role as CFO, Ms. Bull held full budget accountability, reporting to the CEO and Board/Committees. She served as Staff Lead on Finance & Audit, Investment, Compensation, Governance, and Building Committees for the CFT Board of Trustees, partnering for organizational growth.

Prior to CFT, Ms. Bull was Vice President and Treasurer of Texas Instruments, where she was employed for over 25 years. In her role as Vice President and Treasurer she led strategic financial, investment, operational, and people development initiatives in progressive roles, working in multiple Texas locations and in Asia across eight countries. She was TI's first female Vice President in Finance, Treasury, and Asia regional roles and worked with billion dollar and smaller entities/organizations in multiple capacities.

Ms. Bull received her MBA from the Kellogg School of Management at Northwestern University and her bachelor's degree in Mathematics from DePauw University. She is a member of the North Texas chapter of the National Association of Corporate Directors, and she recently completed Harvard Business School’s Executive Education program on “Audit Committees in the New Era of Governance.” Ms. Bulls’s experience provides the Board with knowledge in financial and accounting matters.

Warren Chen

Independent Director

Chair, Risk Oversight Committee

Member, Compensation Committee

Member, Governance and Stockholder Relations Committee

Mr. Chen was a member of the Board of Lite-On Technology Corp. (“LTC”) from 2002 to 2022 and was promoted to President of the Lite-On Group in 2010. He was Vice Chairman and Group CEO of LTC since from 2014 through July 31, 2020. He joined the Lite-On Group in 1983 and has served in positions of increasing responsibility, including as Group Deputy CEO and Core Investment CEO from 2006 to 2010, Deputy CEO of LTC from 2000 to 2006, President of Taiwan Lite-On Electronics Inc. from 1992 to 2000, Senior Vice President of Lite-On Inc. and Production Manager of Compound Semi, Inc. (CA). Prior to joining the Lite-On Group, from 1975 to 1983, Mr. Warren Chen served as manufacturing superintendent for TI Taiwan. Mr. Chen is also a board member of Nuvoton Technology Corporation, a publicly held company. Mr. Chen holds a bachelor’s degree in Chemical Engineering from Chinese Culture University. See “Certain Relationships and Related Person Transactions – Relationships and Transactions.”

Mr. Chen’s approximately 45 years of management experience in the electronics industry and the global supply chain provides the Board with perspective on the future trends and challenges in the semiconductor industry. Mr. Warren Chen is not related to Ms. Angie Chen Button.

Robert E. Feiger

Nominee

Mr. Feiger is the Senior Partner with the law firm of Friedman & Feiger, LLP in Dallas, Texas. His practice is concentrated in the areas of commercial transactions, corporate structuring, mergers and acquisitions, corporate tax planning, personal estate tax and asset protection planning. He formerly served as Staff Attorney for the United States Securities & Exchange Commission in the Division of Enforcement, Special Proceedings, in Washington, D.C., and as an Assistant General Counsel

for Betz Laboratories, Inc., a publicly-held company, in Philadelphia, Pennsylvania. Mr. Feiger holds the designation of Accredited Estate Planner by the National Association of Estate Planners and Councils. He is currently a member of the Dallas Estate Planning Council and formerly served as a member of the Advisory Council of The Dallas Foundation. He is admitted to the State Bar of Texas, and is also a member of the Tax Section of the State Bar of Texas and the Dallas Bar Association.

Mr. Feiger received a B.S.B.A. with final honors from Washington University in St. Louis, where he became a member of Beta Gamma Sigma and Omicron Delta Kappa honor societies, and his J.D. and LL.M. in Taxation from Southern Methodist University Dedman School of Law.

Christina Wen-Chi Sung

Independent Director

Member, Audit Committee

Member, Compensation Committee

Member, Risk Oversight Committee

Ms. Sung served as the Chairman of the Taipei Financial Center Corporation, the management company for Taipei 101, the world’s tallest green building, from 2012 to 2015. She previously served as a Director for Arcadyan Technology Corporation from 2012 to 2014 and Independent Director for Lite-On IT Corporation from 2009 to 2013. She was also the head of the HSBC Asset Management Group (Taiwan) from 2004 to 2006 and the co-CEO of JP Morgan Chase (Taiwan) in 2003. Ms. Sung has over 20 years of experience working in the financial investment industry in Taiwan, during which she has earned numerous accolades, including: inclusion in the 2019 Most Influential Corporate Directors list by WomenInc. Magazine, the 2003 Most Influential Business Woman of the Year by Taiwan Commonwealth Magazine, the 2002 Montblanc Business Woman of the Year, the 1998 Best CEO of the Securities Industry in Taiwan by the Securities and Futures Development Foundation Golden Goblet Awards, and 1998 Outstanding Business Woman in Taiwan by the Chinese Business Woman’s Association.

Ms. Sung brings extensive directorship and business experience to the Board, and she continues to serve on multiple nonprofit boards, including as a director of Feng Chia University. After retiring from Taipei 101, she founded Social Welfare and Social Enterprise Revolving Trust (“SERT”) at the end of 2015, which is aimed at providing financial support and management to non-profit organizations and social enterprises in Taiwan. SERT has been awarded by the government for two consecutive years for its special contribution to the related sector. Ms. Sung received her bachelor’s degree in English language and literature from Soochow University in 1976 and her master’s degree in Executive Management of Business Administration from National Cheng-chi University in 2003.

Gary Yu

President and Director

Member, Risk Oversight Committee

Mr. Yu, who has been with the Company since 2008, was appointed President and elected to the Board of Directors in January 2024. Prior roles in the Company include Chief Operating Officer; Senior Vice President with responsibility for Business Groups and the integration of Lite-On Semiconductor Corporation; President, Asia Pacific Region; General Manager of the Company’s Shanghai wafer fabrication operation and the Company's BCD business unit; Vice President of Asia Pacific Sales; and manager of the Company’s sensor and satellite business unit. Prior to joining the Company, Mr. Yu spent over 10 years at Lite-On Semiconductor Corporation as Vice President, Worldwide Sales and at Texas Instruments in IT, finance, and capacity planning positions. Mr. Yu holds a bachelor’s degree in MIS from Fu-Jen University, Taiwan, a master’s degree in Telecommunication Engineering from Southern Methodist University, and an MBA from University of Dallas. Mr. Yu provides the Board with many years of domestic and foreign semiconductor experience in sales and operations as well as risk management.

THE BOARD UNANIMOUSLY RECOMMENDS THAT YOU VOTE “FOR” EACH OF THE SEVEN NOMINEES TO THE BOARD SET FORTH ABOVE.

CORPORATE GOVERNANCE

COMMITTEES OF THE BOARD

The Board has delegated authority to four standing committees: the Audit Committee, the Compensation Committee, the Governance and Stockholder Relations Committee and the Risk Oversight Committee (the “Committees”) and the Committees regularly report on their activities and actions to the full Board. Each Committee consists of three or more directors who serve at the discretion of the Board. The Board usually makes Committee and Committee chair assignments annually at its meeting immediately following the Company’s annual meeting of stockholders. Mr. Giordano will cease to serve on the Audit Committee upon his retirement from the Board at the Meeting. The Board will name Mr. Giordano's replacement to the Audit Committee promptly following the Meeting. The current composition of each Committee is as follows:

(1) Independent director (as determined by the Board under the rules of The NASDAQ Stock Market LLC (“Nasdaq”) and, in the case of members of the Audit Committee, the rules of the SEC).

(2) Ms. Button became Lead Director on May 23, 2023.

(3) Qualifies as an “audit committee financial expert” as that term is defined in Item 407(d)(5) of Regulation S-K promulgated under the Exchange Act.

(4) Ms. Bull became Chair of the Audit Committee on May 23, 2023, replacing Ms. Button.

(5) Mr. Michael R. Giordano and Mr. Peter M. Menard are not standing for reelection at the Meeting.

Director Independence

The Board has determined that five of the seven director nominees (all director nominees other than Dr. Lu, our Chairman and Chief Executive Officer and Mr. Yu, our President) will be “independent directors” as shown in the above table, as the term “independent director” is defined under the rules of Nasdaq. The Board also has determined that each member of its Audit Committee, Compensation Committee and Governance and Stockholder Relations Committee meets the applicable independence requirements prescribed by Nasdaq and the SEC.

In making its independence determinations with regard to Dr. Lu and Messrs. Feiger and Yu, the Board considered the relationships described under “Certain Relationships and Related Person Transactions – Relationships and Transactions.”

Audit Committee

The Audit Committee makes recommendations to the Board regarding the engagement of the Company’s independent registered public accounting firm, reviews the plan, scope and results of the audit, reviews the Company’s policies and procedures with the Company’s management concerning internal accounting and financial controls, and reviews changes in accounting policy and the scope of non-audit services which may be performed by the Company’s independent registered public accounting firm. The Audit Committee also monitors policies to prohibit unethical, questionable or illegal activities by the Company’s employees. The “Audit Committee Report” section of this Proxy Statement describes in more detail the Audit Committee’s responsibilities, particularly with regard to the Company’s financial statements and its interactions with the Company’s independent registered public accounting firm.

The Board has determined that each member of the Audit Committee is “independent” as that term is defined under the rules of Nasdaq and the SEC, and is able to read and understand fundamental financial statements. The Board also has determined that Ms. Bull and Mr. Giordano each qualify as an “audit committee financial expert” as defined under the rules of the SEC.

Compensation Committee

The Compensation Committee makes recommendations to the Board regarding compensation, benefits and incentive arrangements for the Chief Executive Officer and other officers and key employees of the Company. The Compensation Committee administers the 2022 Equity Incentive Plan ("2022 Plan"), the 2013 Equity Incentive Plan (the “2013 Plan”), the Company’s 401(k) profit sharing plan (the “401(k) Plan”) and the Company’s nonqualified deferred compensation plan. The Board has determined that each member of the Compensation Committee is “independent” as that term is defined under the rules of Nasdaq.

Governance and Stockholder Relations Committee

The principal purposes of the Governance and Stockholder Relations Committee (the “Governance Committee”) are to help ensure that the Board (i) identifies individuals qualified to become members of the Board, consistent with criteria approved by the Board, and (ii) recommends to the Board the nominees for election at the next annual meeting of stockholders. The Board has determined that each member of the Governance Committee is “independent” as that term is defined under the rules of Nasdaq.

Risk Oversight Committee

The Risk Oversight Committee assists the Board in overseeing the Company’s risk management process by (i) overseeing the Company’s efforts to align its management of risks with its strategic objectives, (ii) overseeing the establishment and implementation of a risk oversight framework, and (iii) reviewing the effectiveness of the risk oversight framework in the identification, assessment, monitoring, management and disclosure of significant risks. The Risk Oversight Committee’s oversight provides reasonable assurance that processes are in place to identify, assess, monitor, manage and disclose risks that may have a material adverse effect on the achievement of the Company’s strategic objectives.

Charters of the Committees

All four Committees operate pursuant to written charters, current copies of which are available on the Company’s website, at www.diodes.com, in the “Investors – Corporate Governance” section.

MEETINGS OF THE BOARD AND COMMITTEES

The following table represents the number of meetings and actions taken by written consent of the Board and the Committees in 2023:

With the exception of Mr. Menard, all current directors attended at least 75% of the total number of meetings of the Board and Committees on which each served held during the period he or she served in 2023.

It is the policy of the Company to require Board members to attend the annual meetings of stockholders, if practicable. Each director at the time, except Mr. Menard, attended the 2023 annual meeting of stockholders.

BOARD LEADERSHIP STRUCTURE

The Chairman of the Board, Dr. Keh-Shew Lu, conducts each Board meeting and sets the agenda of each Board meeting after consulting Ms. Angie Chen Button, our independent lead director ("Lead Director") and members of the Board. The Chairman of the Board also has the responsibility to establish effective communications with the Company’s stakeholders, including stockholders, customers, employees, communities, suppliers, creditors, governments and corporate partners. The Chairman also serves as our Chief Executive Officer. Our Board of Directors has determined that this leadership structure is appropriate and effective for the Company at this time. This structure effectively utilizes Dr. Lu’s knowledge of the Company and the industry in which we operate, while fostering greater communication and producing a greater degree of transparency between management and our directors. Dr. Lu has served as a director since 2001 and as Chief Executive Officer since 2005.

The duties of the Lead Director are to preside at executive sessions of the independent directors, serve as principal liaison between the independent directors and the Chairman, work with the Chairman to set and approve the schedule and agenda for meetings of the Board and its committees, direct the retention of advisors and consultants who report directly to the Board, serve as liaison for consultation and communication with stockholders, oversee the annual evaluation of our Board and its committees and evaluate, in cooperation with the Compensation Committee and all members of the Board, the Chief Executive Officer's performance.

NOMINATING PROCEDURES AND CRITERIA AND BOARD DIVERSITY

Among its functions, the Governance Committee identifies individuals qualified to become Board members, consistent with criteria approved by the Board, and recommends to the Board the director nominees to be selected by the Board for election at the next annual meeting of stockholders. In addition to the candidates proposed by the Board or identified by the Governance Committee, the Governance Committee considers candidates for director suggested by stockholders provided such recommendations are made in accordance with the procedures set forth under “Proposals of Stockholders and Stockholder Nominations for 2025 Annual Meeting.” Stockholder nominations that comply with these procedures and meet the criteria outlined below will receive the same consideration that the Governance Committee’s nominees receive.

Essential criteria for all candidates considered by the Governance Committee include the following:

In evaluating candidates for certain Board positions, the Governance Committee evaluates additional criteria, including the following:

In selecting nominees for the Board, the Governance Committee evaluates the general and relevant specialized criteria set forth above prior to commencement of the recruitment process, determines whether a nominee fulfills the independence requirements of the SEC and Nasdaq, evaluates recommendations received from other existing members of the Board, reviews the education of the nominee, evaluates the quality of experience and achievement of the nominee, reviews the nominee’s current or past membership on other companies’ boards, determines that the nominee has the ability and the willingness to spend the necessary time required to function effectively as a director (except in extraordinary circumstances, no director shall serve on the board of more than four other public companies), and determines that the nominee has a genuine interest in representing the stockholders and the interests of the Company overall.

If the Governance Committee is evaluating a nominee for re-election, the Governance Committee will review the nominee’s performance, including the following: availability for and attendance at meetings; contribution to Board processes such as information gathering and decision making; accessibility for communication with other directors and management; participation in Committee activities; depth of knowledge of the Company and its industry; the Company’s performance during the nominee’s previous term, in light of the role played by the Board and the nominee in guiding management; and any specialized expertise or experience that has contributed or may contribute to the functioning of the Board or the success of the Company.

The Governance Committee believes that the Board should include individuals with a broad range of relevant professional expertise, experience and education and reflect the diversity and cultural and geographical perspectives of the Company’s employees, customers and suppliers.

The Governance Committee, as well as the full Board, has recommended the Board’s nominees for election at the Meeting. Stockholders have not proposed any candidates for election at the Meeting.

DIRECTOR RESIGNATION POLICY

Under the Company’s director resignation policy, promptly following the receipt of the final report from the Inspector of Elections relating to an election of directors of the Company (other than elections in which the number of nominees exceeds the number of directors to be elected), any nominee who receives a greater number of votes “WITHHELD” from his or her election than votes “FOR” his or her election, will tender his or her resignation for consideration by the Board. Subject to certain conditions, the Governance Committee will meet to consider the tendered resignation and make a recommendation to the Board concerning the action, if any, to be taken with respect to the director’s resignation.

The Board will consider and act upon the Governance Committee’s recommendation within 90 days of certification of the vote at the Meeting. In considering the director’s resignation, the Governance Committee and the Board will consider all factors they deem relevant, including, without limitation, the underlying reason for the vote result, if known, the director’s contributions to the Company during his or her tenure, and the director’s qualifications. The Board may accept the resignation, refuse the resignation, or refuse the resignation subject to such conditions designed to cure the underlying cause as the Board may impose. Within four business days of the decision regarding the tendered resignation, the Company will file with the SEC a report on Form 8-K disclosing the decision with respect to the resignation, describing the deliberative process and, if applicable, the specific reasons for rejecting the tendered resignation.

COMMUNICATIONS WITH DIRECTORS

You may communicate with the chair of our Audit Committee, our Compensation Committee, our Governance Committee or our Risk Oversight Committee or with our independent directors individually or as a group, by writing to any such person or group c/o Corporate Secretary, Diodes Incorporated, 4949 Hedgcoxe Road, Suite 200, Plano, Texas 75024.

Communications are distributed to the Board, or to any individual director, depending on the facts and circumstances set forth in the communication. In that regard, the Board has requested that certain items that are unrelated to the duties and responsibilities of the Board be excluded, including, but not limited to, the following: junk mail and mass mailings; product complaints; product inquiries; new product suggestions; resumes and other forms of job inquiries; surveys; and business solicitations or advertisements. In addition, material that is unduly hostile, threatening, illegal or similarly

unsuitable will not be distributed, provided that any communication that is not distributed will be made available to any independent director upon request.

Communications that include information that would be better addressed by the Company’s ethics and compliance hotline, which reports to the Audit Committee at (855) 316-2192, will be delivered to the Audit Committee.

COMPENSATION OF DIRECTORS

The following table sets forth the compensation of each director, who is not a NEO, for service in 2023:

(1) See below for the details of cash retainers paid to non-employee directors.

(2) These amounts reflect the value determined by the Company for financial accounting purposes for these awards and do not reflect whether each director has actually realized a financial benefit from the awards. The value of the equity awards in column (c) and (d) is based on the grant date fair value calculated in accordance with the amount recognized for financial statement reporting purposes. Pursuant to SEC rules, the amounts shown exclude the impact of estimated forfeitures related to service-based vesting conditions. Amounts reported for RSUs are calculated by multiplying the number of shares subject to the award by the closing price of the Company’s Common Stock on the grant date. See Note 14, Share-Based Compensation, to the Company’s audited financial statements for the fiscal year ended December 31, 2023, included in the Company’s Annual Report on Form 10-K filed with the SEC on February 9, 2024, for a further discussion of the relevant valuation assumptions used in calculating grant date fair value. All equity awards vest in four equal annual installments.

(3) Under the Company’s 2023 director compensation arrangements, each non-employee director listed in the table above was granted an award under the 2022 Equity Incentive Plan of 3,000 RSUs on May 26, 2023. The per-share closing price of our Common Stock on May 26, 2023 was $87.37 .

(3) Ms. Bull served as chair of the Audit Committee and received an additional $30,000 retainer for such service.

The following table shows the aggregate number of shares underlying outstanding RSUs and outstanding stock options held by non-employee directors as of December 31, 2023:

During 2023, each non-employee director of the Company received a grant of 3,000 RSUs, which vest in four equal annual installments commencing on the first anniversary of the date of grant. The Board may in its discretion modify such director compensation arrangements in the future. For additional information see, “Certain Relationships and Related Person Transactions – Relationships and Transactions.”

The table below sets for the cash retainers paid for non-employee directors for service in 2023 and 2024:

Compensation Committee Interlocks and Insider Participation

During 2023, the Compensation Committee consisted of three directors: Angie Chen Button (Chair), Warren Chen and Christina Wen-Chi Sung. During 2023, no executive officer of the Company served on the compensation committee (or

equivalent) of the board of directors of another entity whose executive officer(s) served on the Company’s Compensation Committee or Board.

CORPORATE POLICIES

Anti-Hedging Policy

The Company’s insider trading policy prohibits all executive officers and directors of the Company from engaging in any hedging or monetization transactions involving the Company’s securities, including zero cost collars, forward sale contracts, and trading in options, puts, calls, or other derivative instruments related to the Company’s Common Stock. To the best of the Company’s knowledge, no executive officers or directors of the Company currently are parties to a hedge with respect to any shares of Common Stock of the Company.

Anti-Pledging Policy

The Company’s insider trading policy prohibits executive officers and directors from pledging the Company’s securities. Acquiring Company shares on margin also is prohibited. To the best of the Company’s knowledge, no executive officers or directors of the Company currently are parties to a pledge of any shares of the Common Stock of the Company.

Short-Selling Policy

Directors and executive officers are prohibited from selling the Company’s equity securities “short” (i.e., the sale of a security that is not owned and must be borrowed to complete the sale) or “selling short against the box” (i.e., the sale of a security that is currently owned but is not delivered against such sale within twenty days thereafter, or is not within five days after such sale deposited in the mails or other usual channels of transportation and the sale is completed with borrowed shares). To the best of the Company’s knowledge, no executive officers or directors of the Company currently are parties to any short-selling transactions with respect to any shares of Common Stock of the Company.

Stock Ownership Policy

Stock Ownership Policy for Directors. The Company’s stock ownership policy provides that all non-employee directors are required to acquire (and thereafter throughout the term of appointment maintain ownership of) a minimum number of shares of Common Stock with a value equal to three times the annual retainer received by them as directors within five years of the later of (1) the adoption of this stock ownership policy, or (2) their respective appointment or initial election. All of the directors are currently or are expected to be in compliance with our stock ownership policy in accordance with the time frame requirements.

Stock Ownership Policy for Executive Officers. The Company’s stock ownership policy provides that all individuals holding the positions with the Company listed below are required to acquire (and thereafter throughout the term of employment maintain ownership of) a minimum number of shares of Common Stock with a value equal to the multiple of such executive officer’s annual base salary (excluding bonus) within five years of the later of (1) the adoption of this stock ownership policy, or (2) their respective appointment (other than a newly-appointed Chief Executive Officer, who has seven years to comply), as follows:

All of the executive officers are currently or are expected to be in compliance with our stock ownership policy in accordance with the time frame requirements.

For purposes of this stock ownership policy, stock ownership includes any shares owned by an executive officer or director or his or her immediate family members or held by him or her as part of a tax or estate plan in which the executive officer or director retains beneficial ownership. The value of shares held is calculated once per year, on the last business day of the fiscal year. For purposes of determining compliance with this stock ownership policy, “value” means an assumed per share value based on the closing price of Common Stock on the last business day of the fiscal year. An executive officer or director subject to this stock ownership policy is not required to acquire shares of Common Stock in accordance with this

policy if acquisition at such time would result in a violation of the Company’s insider trading policy, in which event the executive officer or director is required to comply with this stock ownership policy as soon as reasonably feasible thereafter. A hardship exception is available at the discretion of the Compensation Committee, but no exceptions have been solicited or granted to date.

If any executive officer or director is determined to own less than the minimum number of shares of Common Stock, such executive officer or director shall have the two open periods after the two subsequent “Blackout Periods” to obtain the minimum number of shares of Common Stock. Blackout Period is (i) a period starting on the fifteenth day of the third month in the first calendar quarter and the period starting on the first day of the third month in the second, third and fourth calendar quarters (i.e. March 15, June 1, September 1, December 1) and ending two business days after earnings for that quarter have been publicly released (trading of the Company’s securities can begin on the third day after announcement); and (ii) any other period of significant corporate activity designated from time to time by the Company.

Stock Retention Policy

In addition to the stock ownership policy described above, under which each executive officer or director must maintain a certain multiple of his or her annual base salary or annual retainer throughout the term of employment or appointment, each executive officer or director who acquires shares of our Common Stock through the exercise of a stock option is required to retain 33% of the “net” shares acquired (i.e., net of the tax impact of the stock option exercise) until the earlier to occur of the first anniversary of the date of exercise or the date the individual ceases to be an executive officer or director. This stock retention policy only applies to stock option grants awarded to executives.

Recoupment of Compensation

Pursuant to our Policy Regarding Recoupment of Executive Compensation (“Clawback Policy”), in the event the Company is required to prepare an accounting restatement due to the material noncompliance of the Company with any financial reporting requirement under applicable securities laws, including any required accounting restatement to correct an error in previously issued financial statements that is material to the previously issued financial statements, or that would result in a material misstatement if the error were corrected in the current period or left uncorrected in the current period, the Company will recover reasonably promptly from each Covered Officer (as defined in the Clawback Policy) the Covered Compensation (as defined in the Clawback Policy) received by such Covered Officer. If a Clawback Exception (as defined in the Clawback Policy) applies, the Company may forgo such recovery under the Clawback Policy.

A copy of our Clawback Policy and other corporate policies are available on the Company’s website, at www.diodes.com, in the “Investors – Corporate Governance” section.

CORPORATE SUSTAINABILITY

Corporate Social and Environmental Responsibility (“CSER”) Statement

The commitment to sustainability is represented in the Company's core values of integrity, commitment, and innovation. The Company strives for environmental sustainability, social responsibility, responsible sourcing, business ethics and compliance, corporate citizenship, and employee volunteerism to have a sustainable operation and a long-term, positive impact on our stakeholders, investors, customers, employees, suppliers, and our communities.

The Company adopted a stakeholder-oriented approach to governance and is committed to conducting an ethical, lawful, profitable, and sustainable business that creates value over the long term. It is our firm belief that our stakeholders’ well-being is supported by sustainability considerations, and such considerations are integral to our ongoing organizational success and operational resilience.

As a participant in the global community, the Company recognizes the impact it has on the communities in which its employees, customers, suppliers and other stakeholders live and work. By living our core values – integrity, commitment, and innovation - continuously through our actions in the way the Company conducts business and interacts with its stakeholders, the Company upholds its commitment to be a responsible corporate citizen and positive contributor to our global community. The Company adheres to responsible and ethical business practices and strives to contribute back to its communities.

The Company is committed to a safe and healthy workplace for all our employees and values diversity and inclusion as it contributes to its competitiveness in the global marketplace. The Company is dedicated to ensuring that our employees, customers and suppliers are treated with dignity and respect. In addition to compliance with applicable laws and regulations of the countries in which the Company operates, we also look for opportunities to contribute to the well-being of the communities which we serve.

Stakeholder Engagement

The Company's decision to support sustainability influences our operations worldwide: responsible manufacturing, the health & safety of employees, human resource and human capital management, research and development, product innovation, supply chain management, business ethics, investor relations, and corporate citizenship. We engage with our stakeholders, specifically employees, customers and investors, for feedback on our sustainability efforts.

We view sustainability as a competitive advantage and have adopted a sustainability-oriented approach to assess and address related risks that may influence our operational activities, business results, and financial performance. This includes considering the importance of economic, environmental, and social factors as they impact our business and stakeholders. By engaging with stakeholders to identify sector- and Company-specific risks and opportunities, we may develop proactive strategies to uphold our sustainability efforts. We also assess our progress and leverage industry-standard certification and audit processes to ensure sustained accountability and long-term performance.

Code of Conduct

The Company aligns its business practices and operations with the Code of Conduct published by the Responsible Business Alliance ("RBA"), a leading industry coalition dedicated to corporate social responsibility in global supply chains. The Company's CSER Code of Supplier Conduct and Human Rights and Workforce Labor Rights Policy are based on the RBA Code of Conduct. The RBA Code of Conduct establishes standards to ensure safe working conditions in the electronics industry and in industries in which electronics is a key component, including the supply chains that support those industries. The RBA Code of Conduct seeks to ensure workers are treated with respect and dignity, and that business operations are environmentally responsible and ethically conducted. The RBA Code of Conduct is in alignment with the UN Guiding Principles on Business and Human Rights and is based on international principles and norms that we support and incorporate in our business practices, including the United Nations (UN) Universal Declaration of Human Rights, the International Labor Organization’s (ILO) International Labor Standards and Declaration on Fundamental Principles and Rights at Work, the OECD Guidelines for Multinational Enterprises, and ISO standards.

Through its rigorous RBA Validated Assessment Program (VAP), the Company endeavors to consistently conduct its operational activities in alignment with the RBA Code of Conduct and the Company's quality standards and procedures.

Environmental Sustainability

Environmental Policy

Our commitments to environmental sustainability as a responsible corporate citizen are to:

The Company recognizes that environmental responsibility is integral to producing world-class products. We understand the impact our operations have on the environment, the community, as well as the health and safety of our employees, contractors, and suppliers. We are committed to ensuring environmentally sustainable business practices and to help minimize the environmental impact of our supply chain.

As such, the Company has based its CSER Code of Supplier Conduct on the Responsible Business Alliance ("RBA") Code of Conduct to ensure that business operations are environmentally responsible and compliant, at a minimum, with applicable environmental laws and regulations of the countries in which they have operations. The Company’s direct suppliers are expected to implement the Code of Conduct as well as an adequate management system to help ensure continued compliance with the Company's CSER Code of Supplier Conduct.

We expect our suppliers and vendors to also subscribe to standards and commitments described in these policies so that we collectively manage a responsible supply chain.

We implement rigorous product compliance with the EU Directive regarding the Restriction of Hazardous Substances (RoHS) 2011/65/EU and the REACH Directive 2006/1907 on the Registration, Evaluation, Authorization and Restriction of Chemicals. We provide customers with information on the chemical composition of the materials used in our products, as further described in our master Certificate of Compliance (master CofC).

Resource Conservation Efforts

We are committed to protecting and preserving the environment and providing a safe and healthy workplace for all employees. We are also committed to the continual improvement of environmental protection and health and safety performance, as well as compliance with all applicable laws, regulations, permits, internal worldwide standards, and other social responsibility requirements to which we subscribe. We recognize the impact of our business operations on the environment, the ecosystem, and the communities in which we work and our employees reside. Consistent with our commitment to environmental stewardship, and as reflected in our Company Code of Business Conduct, we have policies and processes in place that incorporate assessment of environmental impact as part of our business decision making process. With a continual focus on resource use efficiencies, we re-use and recycle resources where possible.

SOCIAL RESPONSIBILITY

Business Ethics

The Company is committed to operating with a strong sense of integrity, critical to maintaining trust and credibility with our stakeholders. We believe that long-term, trusting business relationships are built by being honest, open, and fair. We are committed to fostering a culture of integrity that starts with the management team modelling the right way and employees doing the right thing across all levels of the organization. Our promise is to uphold high professional standards in our global business operations and also expect the same from our vendors and suppliers. These values are embedded in our policies and are applicable to all employees, suppliers, and third parties with whom we partner:

Our employees are required to familiarize themselves with the Code of Business Conduct and related policies and procedures. New employees, as part of the onboarding process, are required to acknowledge certain policies and procedures including our Code of Business Conduct. Each year, employees are required to formally acknowledge that they have read and will comply with the Code of Business Conduct. This mechanism helps increase awareness of acceptable business conduct and allows us to deal with issues as they arise.

Conflict Minerals

The Company is dedicated to ensuring that we use responsibly sourced minerals in both our supply chain as well as through our suppliers. The armed conflict and human rights atrocities that proliferate and are funded by the exploitation of natural

resources in the Democratic Republic of Congo (DRC) or adjoining countries are unacceptable and any manufacture of product connected with this will not be tolerated.

Commonly known conflict minerals are those such as tantalum, tin, tungsten, and gold. Conflict minerals originating from the DRC or the adjoining countries must not be included in materials or products supplied to the Company. We are committed to ensuring an ethical and diverse supply chain that is focused on responsible mineral sourcing.

Human Capital Management

As an international semiconductor company with a global footprint, the Company recognizes the important role its human capital plays in a talent-based economy, and what the impact of effective and efficient human capital management ("HCM") has on its long-term strategic success and sustainable growth. Our employees are our most critical asset—they contribute to our financial success for the benefit of all our stakeholders, they are the source of great idea generation that fuels the engine of product innovation, and they are collaborators and contributors to the success of the communities in which we live and work. Human capital management affects many aspects of our operations, including recruitment and talent acquisition, retention, training, workforce optimization, performance management, workplace safety, employee health and wellness, employee engagement, and diversity and inclusion.

Developing two–way communications and deploying effective feedback mechanisms are critical components in our employee engagement process. In addition to quarterly CEO “all hands” meetings, we have an “Open Door” policy, and encourage employees to have regular conversations with their managers to share feedback and express concerns. We also solicit employee feedback informally through regular employee interactions. We hold our managers accountable for setting clear expectations and goals with their teams, for providing coaching, as well as identifying professional development opportunities for their teams, and for engaging in periodic performance reviews. We assist our managers with performance management tools as needed to help them effectively manage their teams and optimize workforce productivity.

We utilize third-party operated employee self-service portals to allow employees to efficiently and timely manage several of their employment related activities; for example, employee benefits, expense reporting, leave of absence management, and attendance records. In addition to employee onboarding orientations and on-the-job training, we leverage a third party learning management system tool to provide training to our employees. We regularly assess the training modules to be responsive to the professional development and training needs of our employees.

Employee retention is a critical element in our sustainable success. To maintain a stable workforce, we provide skill advancement training and coaching, where appropriate, to help our employees enhance their existing skillsets. With our support and preparation, our employees can continue to grow in their current role and maximize the value they contribute to their current teams. Where a suitable rotation opportunity arises, we provide skill expansion training to equip employees for these new positions. By honing their skills, our employees can leverage their institutional knowledge and experience to contribute to the overall success of the organization. The availability of rotational opportunities can also help keep our employees motivated and engaged.

Modern Slavery Act Transparency Statement

The Company conducts business in accordance with its core values of integrity, commitment, and innovation. As a global business committed to protecting human rights, we take seriously the responsibility of preventing modern slavery in our business and supply chains. We are committed to upholding best practices and remaining vigilant to continuously improve.

Pay and Gender

We are committed to complying with applicable wage laws to ensure our employees are fairly and timely compensated and strive to be equitable and ethical in regards to appropriate compensation for applicable roles.

Health and Safety

The Company’s health and safety policy is based on our commitment to provide a safe worksite for all employees worldwide and applies to our suppliers, vendors, partners, and other companies that sell goods or services to the Company and its affiliates. Every employee is responsible for safety, and the Company encourages employees to notify their

manager of any safety-related concerns. To that end we require that applicable federal, state and local safety requirements.

To achieve the goal of having a safe workplace, each site has implemented policies and procedures to address emergency preparedness and response, industrial hygiene and health resources, as well as the use of personal protective equipment. This preventive safety approach allows us to take protective measures to minimize workplace-related risks. Where possible, we leverage technology and automation tools, including industrial robots, to automate repetitive tasks to reduce workplace injuries and illness. Additionally, we seek to provide a safe and secure working environment to our employees through implementation of effective security equipment (e.g. CCTV and alarm systems), security protocols, and onsite security staff.

We ask that each employee be safety conscious. The Company prioritizes assuring a safe environment and compliance with local safety regulations in the countries where we operate. All employees should understand that Diodes will not tolerate any retaliation against an employee for making safety complaints or reporting safety concerns.

By providing a safe space for grievance and incident reporting where employees feel comfortable about reporting near-misses and feel confident that their concerns will be heard and addressed, we intend to exceed the basic standards and promote improved mental and physical well-being throughout the work and home lives of our employees.

Investment in Our Employees

At Diodes we regard our employees as our most important asset. We are committed to providing a positive environment for the development and achievement of goals for our employees. We invest in our employees not only through fair compensation and benefits but also by providing professional and personal development opportunities.

We believe in the value of continuous improvement so that we can satisfy our stakeholders’ requirements. In its broadest sense, we believe our stakeholders include our employees, partners, and the communities where we operate. We believe in the value of continuous learning and fostering a culture of professional growth.

We offer learning opportunities to employees at all levels, through developmental courses and experiential learning. We encourage our managers to identify the training needs of their employees and to help employees manage their careers, and we encourage our employees to request relevant training to promote career and personal development. Based on their functions and responsibilities, employees are offered development opportunities on job related topics such product-specific training, customer complaints training, and audit processes. Other developmental skill training offerings included team building, effective communication, leadership, and negotiation.

Additionally, we engage third party service providers to provide training and webinars on various financial wellness topics such as workplace pension, retirement courses, social security benefits, and early career financial planning to help our employees prepare for personal changes and financial challenges throughout their career.

Governance and Oversight

Sustainability is a strategic focus for the Company and its Board of Directors. We have a Sustainability Steering Committee that focuses on sustainability, the ongoing assessment of our operations, and their impact on the communities in which we operate.

The Sustainability Steering Committee reports directly to the Board and provides periodic updates to the Board regarding the Company’s sustainability related strategies, policies, initiatives, and disclosures. The Board reviews and considers environmental, health and safety, and social matters impacting the Company’s operations. The Sustainability Steering Committee is comprised of members of the senior management team, including the President, Chief Financial Officer, Corporate Secretary, General Counsel and Vice President of Sustainability, and Worldwide Quality Director. It meets regularly to review the Company’s sustainability initiatives and goals as well as the progress towards achieving those goals.

Given our global manufacturing footprint and strong commitment to environmental responsibility, we also formed a Sustainability Task Force represented by regional environmental, health, and safety (EHS) subject matter experts, human resources, and supply chain professionals to review, assess and address the various operational impacts to the Company in areas such as water, waste, energy, supply chain, and human capital management. Additionally, an Energy & Climate

Initiatives Team (ECIT) was established to specifically address climate-related risks and opportunities, exercise oversight over potential climate impacts on our Company operations, and provide guidance on regulatory reporting requirements.

Executive Officers of the Company

None of the executive officers were selected pursuant to any arrangement or understanding, other than that the executive officers of the Company shall act within their capacity as such. Executive officers serve at the discretion of the Board. The following table and discussion sets forth certain biographical information concerning the Company’s executive officers as of the Record Date:

(1) See “Proposal One - Election of Directors” for biographical information regarding Dr. Keh-Shew Lu and Mr. Gary Yu.

Brett R. Whitmire Chief Financial Officer

Mr. Whitmire assumed his current position as the Company’s Chief Financial Officer in March 2019. He has 34 years of industry experience and has been with the Company for over 13 years. Prior to being named CFO, he served as the Corporate Controller and Principal Accounting Officer of the Company, and previously served as the Director of Global Supply Chain. Mr. Whitmire worked at Freescale Semiconductor as Chief Financial Officer for the Analog & Sensors Division. He began his career at Texas Instruments in a variety of finance and operations leadership positions including seven years as Vice President while serving as the finance and operations executive for the High Volume Analog & Logic Division and the corporate supply chain head. Mr. Whitmire holds both a bachelor's degree in Mechanical Engineering and an MBA from The University of Texas at Austin.

Francis Tang Senior Vice President, Worldwide Discrete Products

Mr. Tang was appointed Vice President, Worldwide Discrete Products in 2006 and Senior Vice President in November 2020. He previously served as the Company’s Global Product Manager since 2005. From 2002 until joining the Company, Mr. Tang served as general manager of T2 Microelectronics in Shanghai, China where he managed complex mixed-signal SOC product development. From 1996 to 2001, Mr. Tang was the senior strategic marketing director for Acer Labs, Inc. USA, and prior to that, he was employed by National Semiconductor for 17 years, where he held various management positions in analog and mixed-signal circuit design, applications and strategic marketing. Mr. Tang holds a master’s degree in Electrical Engineering from University of Missouri – Rolla.

Andy (Kuo-Ting) Tsong Senior Vice President, Analog Business Group

Mr. Tsong joined the Company in 2009 as Worldwide Design Engineering Manager for the Analog Business Group. In November 2015, he was assigned to lead the newly-acquired worldwide Pericom business, and held the position of Division Manager for the Precision Timing and Connectivity organization within the Analog Business Group. In November 2021, he was appointed as regional President for the Asia Pacific region with responsibility over non-Make functions. Prior to joining the Company, Mr. Tsong worked for Texas Instruments for over 15 years where he held several key management roles for new product development including System Engineering Manager for High Speed Interface, Senior Design Manager for Mixed Signal IP Development for ASIC, and Design Manager for High Speed SERDES Development. Mr. Tsong received a bachelor’s degree in Electrical Engineering from National Chiao Tung University in Taiwan, and a master’s degree in Electrical Engineering from University of Michigan, Ann Arbor.

Richard D. White Corporate Secretary and Special Assistant to the Chief Executive Officer

Mr. White was appointed as the Company’s Corporate Secretary and Special Assistant to the Chief Executive Officer in February 2019. Mr. White had previously served as the Company's Chief Financial Officer and Corporate Secretary since 2009. From 2006 to 2009, he served as Senior Vice President, Finance. Mr. White has over 40 years of senior level finance experience, including 25 years at Texas Instruments, where he served as Vice President of Finance and Production Planning

for MOS memory, Controller for TI’s Asia Pacific Division in Singapore, and various other financial positions in the United States, France and Germany. From 1999 to 2005, he served as the Chief Financial Officer for Optisoft, Inc., and from 2005 to 2006, he served as a Partner of Tatum, LLC. Mr. White, a licensed certified public accountant, holds a Bachelor’s degree in Electrical Engineering from Oklahoma State University and an MBA from the University of Michigan.

Emily Yang Senior Vice President, Worldwide Sales and Marketing

Ms. Yang was appointed Vice President of Worldwide Sales and Marketing in 2017 and Senior Vice President in November 2020. Ms. Yang has been with the Company since the acquisition of Pericom in 2015, where she was Vice President of Global Sales. Prior to that, she held a number of sales management positions with Pericom since 1998, including: VP of Sales, NAEU, Contract Manufacturing Sales Director, Western Regional Sales Director, and Strategic Account Sales Director covering Asia, North America, and Europe. Ms. Yang holds a bachelor’s degree in Economics from the University of Toronto.

Jin Zhao President, Asia Pacific Region

Dr. Jin Zhao was appointed to manage the Analog Business Group in November 2020, having previously served as manager of the Company’s Linear, Logic and Power Product Division, within the Analog Business Group. Before joining the Company in 2017, Dr. Zhao had held Vice President and General Manager roles at NXP and Fairchild Semiconductor, respectively. In these positions, he had been responsible for managing various product lines, including analog interface ICs and high voltage discrete products. Prior to this, Dr. Zhao was employed by Texas Instruments, where he managed the integrated PMIC and over-voltage protection product lines. He also previously worked at AMD’s fab in Austin, Texas. Dr. Zhao holds a Ph.D. in Chemistry from the State University of New York (in Buffalo) and an MBA from the University of Texas (in Dallas).

There are no family relationships among any of our executive officers and directors, except as described in this Proxy Statement. There have been no material proceedings to which any director, executive officer or affiliate of the Company, any owner of record or beneficially of more than five percent of any class of voting securities of the Company, or any associate of any such director, executive officer, affiliate of the Company, or security holder is a party adverse to the Company or any of its subsidiaries or has a material interest adverse to the Company or any of its subsidiaries. None of our current directors or executive officers have been, during the past 10 years, involved in any legal proceedings required to be disclosed pursuant to Item 401(f) of Regulation S-K.

REPORT OF THE AUDIT COMMITTEE

The Report of the Audit Committee of the Board does not constitute soliciting material and shall not be deemed incorporated by reference by any general statement incorporating by reference this Proxy Statement into any filing under the Securities Act of 1933 or under the Securities Exchange Act of 1934, except to the extent that the Company specifically incorporates this information by reference, and shall not otherwise be deemed filed under such Acts.

AUDIT COMMITTEE REPORT

The Board maintains an Audit Committee composed of three of the Company’s directors, Elizabeth Bull (Chair), Michael R. Giordano and Christina Wen-Chi Sung. Each member of the Audit Committee meets the independence and experience requirements of Nasdaq and the independence requirements of the SEC. Ms. Bull and Mr. Giordano each qualify as an “audit committee financial expert” as defined under the rules of the SEC. The Audit Committee assists the Board in monitoring the accounting, auditing and financial reporting practices of the Company. Mr. Giordano will cease to serve on the Audit Committee upon his retirement from the Board at the Meeting. The Board will name Mr. Giordano's replacement to the Audit Committee promptly following the Meeting.

Management is responsible for the preparation of the Company’s financial statements and financial reporting process, including evaluating the effectiveness of its system of internal controls. In fulfilling its oversight responsibilities, the Audit Committee:

The independent registered public accounting firm is responsible for performing an audit of the Company’s financial statements in accordance with the auditing standards of the Public Company Accounting Oversight Board and expressing an opinion on whether the Company’s financial statements present fairly, in all material respects, the Company’s financial position and results of operations for the periods presented and conform with accounting principles generally accepted in the United States and the effectiveness of the Company’s internal control over financial reporting. In fulfilling its oversight responsibilities, the Audit Committee:

The Audit Committee operates under a written charter, which was adopted by the Board and is assessed annually for adequacy by the Audit Committee. The Audit Committee held five (5) meetings and took action by unanimous written consent one (1) time during fiscal 2023.

In performing its functions, the Audit Committee acts only in an oversight capacity. It is not the responsibility of the Audit Committee to determine that the Company’s financial statements are complete and accurate, are presented in accordance with accounting principles generally accepted in the United States or present fairly the results of operations of the Company for the periods presented or that the Company maintains appropriate internal controls. Nor is it the duty of the Audit Committee to determine that the audit of the Company’s financial statements has been carried out in accordance

with the generally accepted auditing standards of the Public Company Accounting Oversight Board (United States) or that the Company’s auditors are independent. Based upon the reviews and discussions described above, and the report of the independent registered public accounting firm, the Audit Committee has recommended to the Board, and the Board has approved, that the audited financial statements be included in the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2023 for filing with the SEC. The Audit Committee also has recommended, and the Board also has approved, the selection of Moss Adams LLP as the Company’s independent registered public accounting firm for the fiscal year ending December 31, 2024.

CODE OF ETHICS

The Company has adopted a Code of Ethics applicable to the principal executive officer, principal financial officer, principal accounting officer, or persons performing similar functions, and all members of the finance department of the Company. The Code of Ethics is available on the Company’s website at www.diodes.com, in the “Investors – Corporate Governance” section. The Company intends to disclose future amendments to, or waivers from, certain provisions of the Code of Ethics on the Company’s website within four business days following the date of such amendment or waiver.

CERTAIN RELATIONSHIPS AND RELATED PERSON TRANSACTIONS

Policy Regarding Related Person Transactions

The Audit Committee has adopted a written policy (the “Policy”) to review any transaction in which the Company was, or is to be, a participant and in which any director, executive officer, or beneficial owner of more than five percent (5%) of the outstanding shares of Common Stock of the Company, or any immediate family member of any such person, has a direct or indirect material interest (a “related person transaction”). The Policy requires the following:

Relationships and Transactions

The Audit Committee reviews all related person transactions for potential conflict of interest situations on an ongoing basis, in accordance with such procedures as the Audit Committee may adopt from time to time. We believe that all related person transactions are on terms no less favorable to us than could be obtained from unaffiliated third parties.

We conduct business with the following related parties: Keylink International (B.V.I.) Inc. and its subsidiaries and affiliates (“Keylink”), Nuvoton Technology Corporation (“Nuvoton”), Jiyuan Crystal Photoelectric Frequency Technology Ltd. (“JCP”) and Atlas Magnetics, Co ("Atlas").

Keylink is our 5% joint venture partner in our Shanghai assembly and test facilities. We sell products to, and purchase inventory from, companies owned by Keylink. We sold products to companies owned by Keylink, totaling approximately $12.6 million and $20.0 million for the 12 month periods ended December 31, 2023 and 2022, respectively. In addition, our subsidiaries in China lease their manufacturing facilities in Shanghai from, and subcontract a portion of our manufacturing process (metal plating and environmental services) to Keylink. We also pay a consulting fee to Keylink. The aggregate amounts paid to Keylink for the 12 month periods ended December 31, 2023 and 2022 were approximately $16.9 million and $18.2 million, respectively.

We purchase wafers from Nuvoton for use in our production process and consider our relationships Nuvoton to be mutually beneficial. We plan to continue our strategic alliance with Nuvoton. We purchased silicon wafers from Nuvoton

that we use in the production of finished goods, totaling $10.5 million and $15.1 million, respectively, for the twelve month periods ended December 31, 2023 and 2022. We have an agreement to purchase approximately $35.3 million of wafers from Nuvoton that through the fourth quarter of 2025. Warren Chen, a member of the Company's board of directors serves as a member of the Nuvoton board of directors.

We also purchase materials from JCP, a frequency control product manufacturing company in which we have made an equity investment and account for using the equity method of accounting and from Atlas an early stage privately held fabless wafer design company in which the Company holds a majority interest. The Company determined that Atlas is a variable interest entity and the Company does not have the power to direct the activities that most significantly impact Atlas. The Company has therefore determined that the Company is not the primary beneficiary. For additional information related to Atlas see Note 19 - Equity Investments - Variable Interest Entities, in the Company’s Annual Report on Form 10-K filed with the SEC on February 9, 2024 for additional information. below.

See also “Risk Factors – One of our external suppliers is also a related party. The loss of this supplier could harm our business, operating results and financial condition.” in Part I, Item 1A, and Note 15 - “Related Party Transactions,” in each case, in the Company’s Annual Report on Form 10-K filed with the SEC on February 9, 2024 for additional information.

Mr. Gary Yu, the Company's President and Director is married to the niece of Dr. Keh-Shew Lu, the Company's Chairman and Chief Executive Officer. Mr. Yu has been an employee since 2008. Details of Mr. Yu’s compensation are provided below in the Summary Compensation Table. Kevin Chou is the son-in-law of Dr. Keh-Shew Lu, and is employed by the Company as Vice President and Corporate Controller. He has been an employee since 2009. For 2023, Mr. Chou’s total cash compensation was approximately $483,377, and his total equity compensation was 1,700 RSUs, which vest in four equal annual installments.

Mr. Robert E. Feiger, a nominee for director, and his law firm, Friedman & Feiger, LLP, have provided legal representation to Dr. Keh-Shew Lu on matters unrelated to Dr. Lu’s services to the Company. In addition, Friedman & Feiger, LLP previously provided legal representation to the Company from 2007 through March 2020. In connection with his nomination to serve as a director, Mr. Feiger has agreed that while serving on the Board, neither Mr. Feiger nor Friedman & Feiger, LLP, will provide legal services to the Company or its directors or employees, including Dr. Lu, without the prior written approval of the Board, which will allow the Board to consider in advance whether the provision of any requested services would compromise Mr. Feiger’s independence.

DELINQUENT SECTION 16(a) REPORTS

Under Section 16(a) of the Exchange Act, the Company’s directors, executive officers and any persons holding ten percent or more of the Common Stock are required to report their ownership of Common Stock and any changes in that ownership to the SEC and to furnish the Company with copies of such reports.

Specific due dates for these reports have been established by the SEC, and the Company is required to report any failure to file on a timely basis. Based solely upon review of copies of reports filed by the Company’s directors and executive officers with the SEC during the most recent fiscal year ended December 31, 2023, (i) one Form 4, representing two transactions for Julie Holland and (ii) one Form 3 and one Form 4 representing two transactions for Andy Tsong, (iii) one Form 4 representing three transactions for Evan Yu and (iv) one Form 4 representing one transaction for Elizabeth Bull were not filed timely.

STOCKHOLDERS SHARING THE SAME LAST NAME AND ADDRESS

To reduce the expense of delivering duplicate proxy materials to stockholders who may have more than one account holding Diodes stock but who share the same address, we have adopted an SEC-approved procedure called “householding.” Under this procedure, certain stockholders of record who have the same address and last name, and who do not participate in electronic delivery of proxy materials, will receive a single copy of our Notice of Internet Availability of Proxy Materials and, as applicable, any additional proxy materials that are delivered until such time as one or more of these stockholders notify us that they want to receive separate copies. This procedure reduces duplicate mailings and saves printing costs and postage fees, as well as natural resources. Stockholders who participate in householding will

continue to have access to and utilize separate proxy voting instructions. If you receive a single set of proxy materials as a result of householding and you would like to have separate copies of our Notice of Internet Availability of Proxy Materials, annual report, or proxy statement mailed to you, please submit a request to the Secretary of the Company at the Company’s office at 4949 Hedgcoxe Road, Suite 200, Plano, Texas 75024, and we will promptly send you the requested materials. However, please note that if you want to receive a paper proxy or voting instruction form or other proxy materials for this year’s annual meeting, you will need to follow the instructions included in the Notice of Internet Availability of Proxy Materials that was sent to you. If you are a beneficial stockholder and you share an address with other beneficial stockholders, your broker, bank, or other institution is permitted to deliver a single copy of the proxy materials and Notice of Internet Availability of Proxy Materials to your address, unless you otherwise request separate copies.

PROPOSAL TWO

APPROVAL OF EXECUTIVE COMPENSATION

At the Meeting, the stockholders are being asked to approve the compensation of the NEOs as disclosed below pursuant to Section 14A of the Exchange Act (which was added by the Dodd-Frank Wall Street Reform and Consumer Protection Act) and the other compensation disclosure rules of the SEC, including the information in “Compensation Discussion and Analysis” and in the Summary Compensation Table and other related tables and narrative disclosure below in “Executive Compensation.”

At the Company’s 2023 annual meeting of the stockholders, the Company’s stockholders voted in favor of providing stockholders an advisory vote on the approval of the compensation of the Company’s NEOs on an annual basis.

As discussed below, our executive compensation programs are designed to attract, retain and motivate executives who are critical to our long-term growth and profitability. Under these programs, our executives are incentivized to achieve Company performance goals and individual objectives established by the Compensation Committee, without encouraging undue or unreasonable risk-taking.

The Compensation Committee reviews our executive compensation programs annually to ensure they align executive compensation with the interests of our stockholders and current market practices. See “Compensation Discussion and Analysis” and “Executive Compensation” for information about our executive compensation programs, including information about the fiscal 2023 compensation of the NEOs.

This proposal, commonly known as a “say-on-pay” proposal, gives our stockholders the opportunity to express their views on the compensation of our NEOs. This vote is not intended to address any specific item of compensation, but rather the overall compensation of our NEOs and the executive compensation philosophy and decisions described in “Compensation Discussion and Analysis” and “Executive Compensation.”

Approval of the compensation paid to the NEOs, as disclosed below pursuant to the compensation disclosure rules of the SEC, requires the affirmative vote of the holders of a majority of the outstanding shares of the Common Stock present, in person via the Internet or by proxy, and entitled to vote on the proposal at the Meeting.

This vote is advisory and is not binding on the Company, the Board or the Compensation Committee. However, the Board and the Compensation Committee value the opinions of our stockholders and will review the result of the vote and take it into consideration when making future decisions regarding executive compensation.

Accordingly, our stockholders are being asked to vote on the following resolution at the Meeting:

“RESOLVED, that the compensation paid to the Company's NEOs, as disclosed in this Proxy Statement pursuant to the SEC’s executive compensation disclosure rules, including Compensation Discussion and Analysis, compensation tables and narrative discussion, is hereby APPROVED.”

THE BOARD UNANIMOUSLY RECOMMENDS A VOTE “FOR” THE APPROVAL OF THE COMPENSATION OF OUR NEOS AS DISCLOSED IN “COMPENSATION DISCUSSION AND ANALYSIS” AND “EXECUTIVE COMPENSATION.”

COMPENSATION DISCUSSION AND ANALYSIS

INTRODUCTION

This Compensation Discussion and Analysis (“CD&A”) explains the design and operation of the Company’s compensation program for (i) anyone who served during the fiscal year as our Chief Executive Officer or our Chief Financial Officer and (ii) our three other most highly compensated executive officers in the fiscal year (collectively, our “NEOs”).

Our NEOs for fiscal 2023 were:

(1) Ms. Holland retired as an executive officer effective March, 31, 2023.

EXECUTIVE SUMMARY

“Say-on-Pay” Vote Summary

At our 2023 annual meeting of stockholders, our stockholders approved, by a vote of approximately 98% of the shares present in person or by proxy and entitled to vote on the proposal (not counting abstentions and broker non-votes), the compensation paid to our NEOs for services rendered in 2022 as presented in the proxy statement for the 2023 annual meeting of stockholders. In light of this favorable “say on pay” vote and our stockholder engagement, the Compensation Committee did not materially adjust the Company’s compensation program for 2023 or 2024.

We have engaged with our stockholders to understand their perspectives on our Company, including our strategies, performance, governance, and executive compensation. This ongoing dialogue has helped inform the Board's decision-making and ensure our interests remain well-aligned with those of our stockholders.

The Company has a record of adopting provisions or modifying practices to reflect stockholder input. Examples include the Company's majority vote policy which was strengthened and documented at the request of our stockholders, as well as the 2017 redesign of our executive compensation program and external reviews of the Company's peer group and executive compensation program in 2020 and 2022.

2023 Business Summary

Below is a summary of our 2023 financial results:

The following table provides additional information concerning our performance in fiscal 2022 compared to fiscal 2021:

(1) See Exhibit 99.1 to the Current Report on Form 8-K filed with the SEC on February 6, 2024 for a description of the adjustments used to calculate Adjusted net income – common stockholders (Non-GAAP) and Adjusted earnings per share – common stockholders (Non-GAAP) Diluted.

OVERVIEW OF COMPENSATION PROGRAM

Compensation Philosophy

Our executive compensation program is designed to attract, retain and motivate experienced executives to achieve sustainable profitable growth and generate positive cash flow. Our compensation philosophy is driven by the following guiding principles:

Best-Practice Compensation Governance Features

Our executive compensation program is based upon best-practices.

Components of Compensation

The principal elements of our executive compensation program for 2021, 2022 and 2023 are summarized in the table below:

Factors Considered in Making Compensation Decisions

Our compensation strategy is flexible and enables us to appropriately differentiate and reward executives by taking into account:

• Company financial and operational performance;

• The executive's individual performance, experience and qualifications;

• The scope of the executive's role;

• The level of total compensation for our other executives; and

• Competitive market data which helps us evaluate how our executive pay levels compare to that being offered to individuals with comparable roles in semiconductor companies with which we compete for talent.

For additional information regarding elements of compensation, please refer to the graphs below in the section entitled “Principal Components of Compensation."

PAY FOR PERFORMANCE

The chart below illustrates the relative degree of alignment between the total stockholder return ("TSR," defined as stock price appreciation plus dividends) and the CEO's annual compensation as reported in the Summary Compensation Table for the Company (set forth below) and its 2023 Peer Group (as defined below) for the most recent three-year period available. For further information concerning the 2023 Peer Group, see “Compensation Review Process – Selection of Peer Group.”

The table below illustrates the change in Dr. Lu’s total direct compensation for 2021, 2022 and 2023:

Total shareholder return for 2021, 2022 and 2023 was 55.8%, (30.7)% and 5.8%, respectively. The increase in total shareholder return reflects the increase in the Company's stock price from $76.14 per share at December 30, 2022 to $80.52 at December 29, 2023.

To evaluate projected 2023 compensation levels, the Compensation Committee retained Compensation Advisory Partners (“CP”) in September 2022. In November 2022 CP advised the Compensation Committee as to the composition of the 2022 Peer Group. Then in December 2022 CP compared our 2023 projected executive target compensation to that of our 2022 Peer Group. CP reported directly to the Compensation Committee. The individuals at CP who provided the compensation consulting services to the Compensation Committee provide no other services to the Company or its subsidiaries.

In the December 2022 comparison, CP reviewed the compensation elements and market practices impacting the top eight senior executive positions at the Company. The scope of the review focused on the base salary plus target annual and target long-term incentive compensation levels of the top eight senior executive positions. The report relied on the compensation practices of our 2022 Peer Group. For a description of the 2022 Peer Group, see “Compensation Review Process – Selection of Peer Group” below. The review summarized the executives’ overall percentile alignment for the Company's executives compared to the final blended market data, with target compensation being the primary focus of the study percentile value and derived from base salary, target total cash, 2023 target long-term incentives and total direct compensation at target total cash. The review demonstrated that with some variation by individual, The Company's executives are compensated at the 68th percentile in terms of total direct compensation using target total cash plus 2023 target long-term incentives. The 68th percentile measurement was primarily driven by the long-term performance incentives portion of our executive compensation program. The relative pay rank for our CEO and other executives by type of compensation are detailed in the following chart:

PRINCIPAL COMPONENTS OF COMPENSATION

2023 Pay Mix

The Compensation Committee set 2023 base salary and target bonus and LTI award levels to generally align the NEO’s total direct compensation with the semiconductor market. The charts below illustrate the relative composition of 2023 total direct compensation for our CEO and our other NEOs.

Base Salaries

We provide each of our NEOs with a competitive fixed annual base salary. The base salaries for our NEOs are reviewed annually by the Compensation Committee by taking into account each executive officer's scope of responsibility, level of experience, individual performance, and past and potential contribution to the Company's business, as well as the Company’s performance and the current year’s change in the cost of living. The Compensation Committee does not assign any particular formula or weight to the foregoing factors.

Consistent with our compensation philosophy, base salaries represent a fixed portion of total compensation and may generally be at or lower than the median base salaries being offered to individuals with comparable roles in semiconductor companies with which we compete for talent.

The following table shows each NEO’s annualized base salary for 2021 to 2023 and the percentage change in each NEOs’ annualized base salary from the prior year:

(1) Ms. Holland retired as an executive officer effective March 31, 2023.

Annual (Bonus) Incentive Plan

Annual incentives reward both the achievement of short-term financial goals, as well as the execution of activities to advance our strategic priorities, which support near-term financial performance and long-term strategic objectives. Our annual bonus plan for 2022 and 2023 was simple, formulaic and responsive to investor feedback:

This table illustrates the structure of the plan for 2022 and 2023.

Both the financial metrics and the strategic priorities are set at the beginning of the year and on an absolute basis. The schedule below sets forth the annual incentives to be paid as a percentage of target. Performance below or above target will result in an award ranging from 0% to a maximum of 200% of target.

The Compensation Committee chose to use EPS and net sales as the primary measures for 2022 and 2023 to keep our NEOs focused on profitability and profitable growth. The Compensation Committee determined these measures to be appropriate since they are measures used by our peers in evaluating performance and are commonly used by stakeholders in the evaluation of company performance. The Compensation Committee has weighted CSER to the financial metrics at a to 5% weighting, and established an internal committee to improve the Company's focus on its ongoing environmental,

social and governance activities. Achieving goals in all of these areas is critical to driving short-term results that have long-term impact on value creation. The strategic initiatives will be evaluated based upon demonstrated performance against the specific pre-determined targets.

*Performance between 80% and 100% of target and between 100% and

120% of target is interpolated between the end points identified above.

The following table sets forth the performance targets established by the Compensation Committee and the results achieved by the Company for fiscal 2022 and fiscal 2023: