DPG Duff and Phelps Utility and Infrastructure Fund Inc

OTHER INFORMATION

The Adviser. Duff & Phelps Investment Management Co. acts as investment adviser for each Fund. The address of the Adviser is 200 S. Wacker Drive, Suite 500, Chicago, Illinois 60606. The Adviser (together with its

15

predecessor) has been in the investment management business for more than 75 years and, as of December 31, 2021, had approximately $12.2 billion in client accounts under discretionary management. The Adviser is an indirect, wholly-owned subsidiary of Virtus, a public company whose common stock is traded on the NASDAQ Global Market under the trading symbol “VRTS.”

The Administrators. Robert W. Baird & Co. Incorporated (“Baird”) serves as administrator of DNP and DTF. The address of Baird is 500 West Jefferson Street, Louisville, KY 40202. Founded in 1919, Baird is an employee-owned, international financial services firm. Baird provides private wealth management, asset management, investment banking, capital markets and private equity services to clients through its offices in the United States, Europe and Asia.

Virtus Fund Services, LLC (“Virtus Fund Services”) serves as administrator of DPG. The address of Virtus Fund Services is One Financial Plaza, Hartford, CT 06103. Virtus Fund Services is an indirect, wholly-owned subsidiary of Virtus and acts as administrator and/or transfer agent to registered investment companies, including DPG.

Shareholders. The following table shows shares of common stock of the Funds as to which each director and director nominee, and all directors and executive officers of the Funds as a group, had or shared power over voting or disposition at October 31, 2021. The directors, director nominees and executive officers of the Funds owned no shares of preferred stock of any of the Funds. Shares are held with sole power over voting and disposition except as noted. The shares of common stock held by each of the persons listed below and by all directors and executive officers as a group represented less than 1% of the outstanding common stock of each Fund.

16

To the Funds’ knowledge, as of the date of this proxy statement, the only persons (including any “group” as that term is used in Section 13(d)(3) of the Securities Exchange Act of 1934 (the “1934 Act”)) who beneficially own more than 5% of any class of any Fund’s voting securities (as determined in accordance with Rule 13d-3 under the 1934 Act) are the persons identified in the following table. Except as otherwise indicated, the information in this table is based on information provided in Schedule 13D and 13G filings made with the Securities and Exchange Commission by each of the persons listed.

17

18

Section 16(a) Beneficial Ownership Reporting Compliance. Section 30(h) of the 1940 Act imposes the filing requirements of Section 16 of the 1934 Act upon (i) the Funds’ directors and officers, (ii) the Funds’ investment adviser and certain of their affiliated persons and (iii) every person who is directly or indirectly the beneficial owner of more than 10% of any class of a Fund’s outstanding securities (other than short-term paper). Based solely on a review of the copies of Section 16(a) forms furnished to the Funds, or written representations that no Forms 5 were required, the Funds believe that during each Fund’s most recently completed fiscal year all such filing requirements were complied with, except that Ellen Lyerly Elberfeld, an officer of the Adviser, was late in filing a Form 3 for DPG.

Report of the Audit Committee. The Funds’ independent directors comprise the audit committee of each Fund and act under a written charter which sets forth the audit committee’s responsibilities. A copy of the audit committee charter is available on each Fund’s website at www.dpimc.com/dnp, www.dpimc.com/dpg and www.dpimc.com/dtf and in print to any shareholder who requests it. Each of the members of the audit committee is independent as defined in the listing standards of the New York Stock Exchange. In connection with the audit of each Fund’s 2021 audited financial statements, the audit committee: (1) reviewed and discussed each Fund’s 2021 audited financial statements with management, (2) discussed with the independent auditors the matters required to be discussed by Statement on Auditing Standards No. 61, as amended (AICPA, Professional Standards, Vol. 1, AU section 380), as adopted by the Public Company Accounting Oversight Board in Rule 3200T, (3) received and reviewed the written disclosures and the letter from the independent accountant required by applicable requirements of the Public Company Accounting Oversight Board regarding the independent accountant’s communications with the audit committee concerning independence, and (4) discussed with the independent accountant its independence from each Fund and its management. Based on the foregoing reviews and discussions, the audit committee recommended to the board of directors that each Fund’s audited financial statements be included in the Annual Report to Shareholders for filing with the Securities and Exchange Commission.

The Audit Committee

Donald C. Burke (Chairman)

Philip R. McLoughlin

Geraldine M. McNamara

Eileen A. Moran

David J. Vitale

19

Independent Registered Public Accounting Firm. The 1940 Act requires that each Fund’s independent registered public accounting firm be selected by the vote, cast in person, of a majority of the members of the Board who are not interested persons of the Fund. In addition, the listing standards of the New York Stock Exchange vest the audit committee, in its capacity as a committee of the Board, with responsibility for the appointment, compensation, retention and oversight of the work of each Fund’s independent registered public accounting firm. In accordance with the foregoing provisions, the firm of Ernst & Young LLP (“Ernst & Young”) has been selected as independent registered public accounting firm of each Fund to perform the audit of the financial books and records of the Funds for the fiscal year ending October 31, 2022. A representative of Ernst & Young is expected to be present at the joint annual meeting of shareholders and will be available to respond to appropriate questions and will have an opportunity to make a statement if the representative so desires.

Pre-Approval of Audit and Non-Audit Services. Each Fund is responsible for the appointment, compensation and oversight of the work of the independent registered public accounting firm. As part of this responsibility, each Fund’s audit committee is required to pre-approve the audit and non-audit services performed by the independent accountant in order to assure that they do not impair the independent accountant’s independence from the Fund. Accordingly, each Fund’s audit committee has adopted a joint audit and non-audit services pre-approval policy (the “Joint Audit Committee Pre-Approval Policy”), which sets forth the procedures and the conditions pursuant to which services proposed to be performed by the independent accountant may be pre-approved. Each engagement of an independent accountant to render audit or non-audit services to a Fund must be either (i) a specific service pre-approved by the Fund’s audit committee or the chairman of the audit committee, to whom the committee has delegated the authority to grant such pre-approvals between scheduled meetings of the committee, or (ii) come within the scope of a general pre-approval granted under the Joint Audit Committee Pre-Approval Policy. As provided in the Joint Audit Committee Pre-Approval Policy, unless a type of service has received general pre-approval (i.e., the proposed services are pre-approved without consideration of specific case-by-case services by the audit committee), then the service will require specific pre-approval by the audit committee if the proposed service is to be provided by the independent accountant. As provided in the Joint Audit Committee Pre-Approval Policy, any proposed services exceeding pre-approved cost levels or budgeted amounts require specific pre-approval by the audit committee. In deciding whether to grant pre-approval for such services, the audit committee, or the chairman of the audit committee acting under delegated authority, as the case may be, will consider whether such services are consistent with the SEC’s rules on auditor independence. Additionally, the audit committee, or the chairman of the audit committee acting under delegated authority, as the case may be, will also consider whether the independent accountant is best positioned to provide the most effective and efficient service, after considering a number of factors as a whole, with no one factor being necessarily determinative.

Each Fund’s audit committee is also required to pre-approve its accountant’s engagements for non-audit services rendered to the Adviser and any entity controlling, controlled by or under common control with the Adviser that provides ongoing services to the Fund, if the engagement relates directly to the operations and financial reporting of the Fund. In deciding whether to grant pre-approval for such non-audit services, the audit committee or the chairman of the audit committee, as the case may be, considers whether the provision of such non-audit services is compatible with maintaining the independence of the Fund’s accountants.

Audit and Non-Audit Fees. The following table sets forth the aggregate audit and non-audit fees billed to each Fund for each of the last two fiscal years for professional services rendered by Ernst & Young. For purposes of this table, to the extent the amount of a fee for a pre-approved service is known as of the date of this report,

20

such fee amount has been allocated to the fiscal year to which the applicable service relates, even in cases where the applicable Fund has not yet been billed for such service.

21

Communications with the Board by Shareholders and Other Interested Persons. The Board has adopted the following procedures for shareholders and other interested persons to send communications to the Board. Shareholders and other interested persons may mail written communications to the full Board, to committees of the Board or to specified individual directors in care of the Secretary of the Funds, 200 S. Wacker Drive, Suite 500, Chicago, Illinois 60606. All such communications received by the Secretary will be forwarded promptly to the full Board, the relevant Board committee or the specified individual directors, as applicable, except that the Secretary may, in good faith, determine that a communication should not be so forwarded if it does not reasonably relate to the Funds or their operations, management, activities, policies, service providers, Board, officers, shareholders, or other matters relating to an investment in the Funds or is purely ministerial in nature. Each of the Funds’ directors is encouraged to attend the annual meeting of shareholders. All of the individuals who were directors of DNP and DPG at the time of the March 8, 2021 joint annual meeting of the shareholders of DNP and DPG were in attendance at that meeting, and all of the individuals who were directors of DTF at the time of the February 26, 2021 annual meeting of the shareholders of DTF were in attendance at that meeting.

Shareholder Proposals and Nominations. In order for any shareholder proposal or director nomination to be considered for inclusion in any Fund’s proxy statement and form of proxy for the 2023 annual meeting of shareholders, such proposal or nomination must be received by the Secretary of the Fund no later than September 23, 2022. Under the circumstances described in, and upon compliance with, Rule 14a-4(c) under the 1934 Act, a Fund may solicit proxies in connection with the 2023 annual meeting which confer discretionary authority to vote on any shareholder proposals of which the Secretary of the Fund does not receive notice by December 7, 2022. Any notice of a shareholder proposal or director nomination must conform to the requirements in the Fund’s bylaws. Copies of the bylaws of any of the Funds may be requested from the Secretary of the Funds, 200 S. Wacker Drive, Suite 500, Chicago, Illinois 60606.

Solicitation of Proxies. Proxies will be solicited by mail. Proxies may be solicited by Fund personnel personally or by telephone, postal mail or electronic mail, but such persons will not be specially compensated for such services. The Funds will inquire of any record holder known to be a broker, dealer, bank or other nominee as to whether other persons are the beneficial owners of shares held of record by such persons. If so, the Funds will supply additional copies of solicitation materials for forwarding to beneficial owners, and will make reimbursement for reasonable out-of-pocket costs. The Funds will bear the cost of the annual meeting and this proxy solicitation. Total costs for the annual meeting and proxy solicitation, including printing and mailing proxy materials, are estimated at $235,000, and will be charged to the respective Funds based on their proportion of shareholder accounts except where another alternative allocation methodology is deemed more appropriate. The Funds do not currently intend to retain any third-party solicitor to contact shareholders regarding this proxy solicitation or to incur any expenses for such a third-party solicitation.

22

Further Information About Voting and the Annual Meeting. A majority of the outstanding shares of each Fund entitled to vote at the annual shareholder meeting shall constitute a quorum for purposes of conducting business of the Fund.

The Board has fixed the close of business on December 10, 2021 as the record date for the determination of shareholders of each Fund entitled to notice of, and to vote at, the annual meeting. Shareholders of a Fund on that date will be entitled to one vote on each matter to be voted on for each share held.

Instructions regarding how to vote via telephone or the Internet are included on the enclosed proxy card. The required control number for Internet and telephone voting is printed on the enclosed proxy card. The control number is used to match proxy cards with shareholders’ respective accounts and to ensure that, if multiple proxy cards are executed, shares are voted in accordance with the proxy card bearing the latest date.

The annual meeting will be a completely virtual meeting of shareholders, which will be conducted exclusively by webcast. You are entitled to participate in the annual meeting only if you were a shareholder of the Funds as of the close of business on the record date, or if you hold a valid proxy for the annual meeting. No physical meeting will be held.

You will be able to attend the annual meeting online and submit your questions during the meeting by visiting https://meetnow.global/MT7S9RS. You also will be able to vote your shares online by attending the annual meeting by webcast.

To participate in the annual meeting, you will need to log on using the control number from your proxy card or meeting notice. The control number can be found in the shaded box.

If you are a registered shareholder, you do not need to register to attend the annual meeting virtually on the Internet. If you hold your shares through an intermediary, such as a bank or broker, you must register in advance in order to attend the meeting. To register to attend the annual meeting online by webcast you must submit proof of your proxy power (legal proxy) reflecting your holdings along with your name and email address to Computershare. You must contact the bank or broker who holds your shares to obtain your legal proxy. Requests for registration must be labeled as “Legal Proxy” and be received no later than 5:00 p.m., Eastern Time, 5 business days prior to the meeting date. You will receive a confirmation of your registration by email after we receive your legal proxy. Requests for registration should be directed to us by emailing an image of your legal proxy, to shareholdermeetings@computershare.com.

The online meeting will begin promptly at 1 p.m., Eastern Time. We encourage you to access the meeting prior to the start time leaving ample time for the check in. Please follow the access instructions as outlined in this proxy statement.

The virtual meeting platform is fully supported across MS Edge, Firefox, Chrome and Safari browsers and devices (desktops, laptops, tablets and cell phones) running the most up-to-date version of applicable software and plugins. Please note that Internet Explorer is no longer supported. Participants should ensure that they have a strong WiFi connection wherever they intend to participate in the meeting. We encourage you to access the meeting prior to the start time. A link on the meeting page will provide further assistance should you need it or you may call 1-888-724-2416 or 1-781-575-2748.

23

All shares represented by properly executed proxies received prior to the annual meeting will be voted at the annual meeting in accordance with the instructions marked thereon or otherwise as provided therein. If any other business is brought before the annual meeting, your shares will be voted at the proxies’ discretion. If you sign the proxy card, but do not fill in a vote, your shares will be voted “FOR ALL” of the nominees for director, in accordance with the recommendation of the Board.

Shareholders who execute proxy cards or record their voting instructions via telephone or the Internet may revoke their proxies at any time prior to the time they are voted by giving written notice to the Secretary of the Funds, by delivering a subsequently dated proxy (including via telephone or the Internet) prior to the date of the annual meeting or by virtually attending and voting at the annual meeting. Merely virtually attending the annual meeting, however, will not revoke a previously submitted proxy.

Annual Report. Each Fund will provide without charge to any shareholder who so requests, a copy of the Fund’s annual report for the Fund’s most recently completed fiscal year. The annual reports for DNP and DTF are available by calling Baird toll-free at (833) 604-3163 and are also available on each such Fund’s web site at www.dpimc.com/dnp and www.dpimc.com/dtf. The annual report for DPG is available by calling Virtus Fund Services toll-free at (866) 270-7598 and is also available on DPG’s web site at www.dpimc.com/dpg.

General. A list of shareholders of each Fund entitled to be present and vote at the annual meeting will be available at the offices of the Funds, 200 S. Wacker Drive, Suite 500, Chicago, Illinois 60606, for inspection by any shareholder during regular business hours for ten days prior to the date of the meeting.

Failure of a quorum of shareholders of any of the Funds to be present at the annual meeting will necessitate adjournment of the meeting with respect to those Funds and will give rise to additional expense.

EVERY SHAREHOLDER VOTE IS IMPORTANT. WE ENCOURAGE YOU TO TAKE ADVANTAGE OF INTERNET OR TELEPHONE VOTING. BOTH ARE AVAILABLE 24 HOURS A DAY, 7 DAYS A WEEK.

January 21, 2022

24

DNP SELECT INCOME FUND INC. IMPORTANT PROXY INFORMATION Your Vote Counts! PLEASE USE THE 14 DIGIT CONTROL NUMBER & 8 DIGIT SECURITY CODE LISTED IN THE BOXES BELOW WHEN REQUESTING MATERIAL VIA THE TELEPHONE & INTERNET. When you are ready to vote, you can use the same Control Number & Security Code to record your vote. Shareholder Meeting Notice - THIS IS NOT A PROXY - Please read carefully for voting instructions. Important Notice Regarding the Availability of Proxy Materials for the DNP Select Income Fund Inc. Shareholders Meeting to be held virtually on March 7, 2022. As a shareholder, it is important for you to vote! On the back of this notice, you will find a summary of the proposals that require a shareholder vote at the Meeting. This communication is NOT a form for voting and presents only an overview of the more complete proxy materials that are available to you on the Internet or by mail. We encourage you to access and review all of the important information contained in the proxy materials before voting. The Joint Proxy Statement for the Meeting and Form of Proxy are available at: https://www.proxy-direct.com/dnp-32455 If you want to receive a paper copy of the documents or an email with a link to the documents, you must request them. There is no charge to you for requesting a copy. Paper materials will be mailed to the address on file within 3-business days of receipt of the request. Please make your request as soon as possible, but no later than February 24, 2022, to facilitate timely delivery. The Meeting of Shareholders of DNP Select Income Fund Inc. will be held virtually at the following website: meetnow.global/MT7S9RS on March 7, 2022, at 1:00 p.m., Eastern Time. To participate in the Virtual Meeting enter the 14-digit control number from the shaded box on this notice. ONLINE MATERIAL ACCESS AND PAPER COPY REQUESTS CAN BE MADE UTILIZING ONE OF THE THREE METHODS BELOW. YOU CAN ALSO USE ONE OF THESE THREE METHODS TO ELECT A PERMANENT DELIVERY PREFERENCE FOR FUTURE MEETINGS. ACCESS MATERIALS AND VOTE OR REQUEST PAPER DELIVERY OF MATERIALS EASY ONLINE ACCESS - REQUEST BY INTERNET Log on to the Internet and go to: https://www.proxy-direct.com/dnp-32455 On this site you can view the Proxy Statement and Form of Proxy online, request paper copies, request an email with a link to the materials and/or set future delivery preferences. Just follow the steps outlined on this secure website. TELEPHONE REQUESTS - CALL 1-877-816-5331 Obtain paper copies of the Proxy Statement and/or Form of Proxy with an option to set future delivery preference by touch tone phone. Call toll free from the U.S. or Canada at NO CHARGE to you. Follow the instructions provided in the recorded messages. E-MAIL REQUEST AT: proxymaterials@computershare.com: Email us to request Proxy Materials for the shareholder meeting and/or to set future delivery preferences. - Provide only your 14-Digit Control Number and 8-Digit Security Code as listed on this notice in your email request for materials. - If you want to elect to receive all future proxy materials in paper form or via email, please note your request and for email, provide the address. PAPER COPY REQUESTS SHOULD BE MADE NO LATER THAN FEBRUARY 24, 2022, TO FACILITATE TIMELY DELIVERY. DNP_32455_NA_122921

Your Fund Holdings: FUND DNP SELECT INCOME FUND INC. The following matters will be considered at the Meeting: 1a. Election of Director. 2. Approval of a proposal to amend DNP’s charter to increase the number of authorized shares of common stock. The Board of Directors unanimously recommends that shareholders vote “FOR” the Proposals described in the Proxy Statement. Please refer to the Proxy Materials for further details on the proposals. YOUR VOTE IS IMPORTANT NO MATTER HOW MANY SHARES YOU OWN Common Questions about Notice and Access Why am I receiving a Notice of Internet Availability instead of a Proxy card and Proxy statement? Your fund has elected to utilize a distribution model authorized by the Securities and Exchange Commission in 2007. This model, known as Notice and Access, allows mutual funds and public companies to send you a Notice instead of a full set of printed proxy materials. As a shareholder, you can select the means by which you access those proxy materials. You can view the materials electronically via the Internet, or request a full set of printed materials for this Shareholder Meeting and all future meetings, or you can make that choice on a case by case basis. How do I access the materials, set my preference for future shareholder meeting materials and record my vote? On the front side of this Notice are easy to follow instructions on how to access Proxy materials electronically or request a full set of printed materials. Once you are on the website or ordering on the phone, you can also make your selection for future meetings. When you are ready to vote, electronic voting is available by Internet or Touch Tone Phone by using the Control Number and Security Code on the front of this Notice. The Touch Tone voting phone number is different from the ordering phone number and is displayed on the website. If you want to vote via Mail, you will need to request a paper copy of the materials to receive a Proxy Card and Return Envelope. If I request printed proxy materials, how long will it take for me to receive them? The SEC rule requires that the materials be sent via first class mail within three business days of receipt of your request. DNP_32455_NA_122921

EVERY SHAREHOLDER’S VOTE IS IMPORTANT We encourage you to take advantage of Internet or telephone voting. Both are available 24 hours a day, 7 days a week. EASY VOTING OPTIONS: VOTE ON THE INTERNET Log on to: www.proxy-direct.com or scan the QR code Follow the on-screen instructions available 24 hours VOTE BY PHONE Call 1-800-337-3503 Follow the recorded instructions available 24 hours VOTE BY MAIL Vote, sign and date this Proxy Card and return in the postage-paid envelope VOTE AT THE VIRTUAL MEETING at the following Website: meetnow.global/MT7S9RS on March 7, 2022 at 1:00 p.m., Eastern Time. To Participate in the Virtual Meeting, enter the 14-digit control number from the shaded box on this card. Please detach at perforation before mailing. DNP SELECT INCOME FUND INC. JOINT ANNUAL MEETING OF SHAREHOLDERS TO BE HELD ON MARCH 7, 2022 COMMON STOCK PROXY SOLICITED BY MANAGEMENT FROM COMMON SHAREHOLDERS. Jennifer S. Fromm, Alan M. Meder, Daniel J. Petrisko and William J. Renahan or any of them, each with full power of substitution, are authorized to vote all shares of common stock of DNP Select Income Fund Inc. (the “Fund”) owned by the undersigned at the Joint Annual Meeting of Shareholders to be held virtually at the following Website: meetnow.global/MT7S9RS March 7, 2022, at 1:00 p.m., Eastern Time, and at any adjournment of the meeting. To participate in the Virtual Meeting enter the 14-digit control number from the shaded box on this card. They shall vote in accordance with the instructions set forth on the reverse side hereof. VOTE VIA THE INTERNET: www.proxy-direct.com VOTE VIA THE TELEPHONE: 1-800-337-3503 CHANGE OF ADDRESS COMMENTS DNP_32455_122921 PLEASE MARK, SIGN, DATE AND RETURN THIS PROXY PROMPTLY USING THE ENCLOSED ENVELOPE. xxxxxxxxxxxxxx code

EVERY SHAREHOLDER’S VOTE IS IMPORTANT Important Notice Regarding the Availability of Proxy Materials for the Joint Annual Meeting of Shareholders to be held virtually on March 7, 2022. The Notice of Meeting, Joint Proxy Statement and Proxy Card are available at: https://www.proxy-direct.com/dnp-32455 Please detach at perforation before mailing. If no specific instructions are provided, this proxy will be voted “FOR” the election of the director and “FOR” proposal 2 and in the discretion of the proxies upon such other business as may properly come before the meeting. TO VOTE MARK BLOCKS BELOW IN BLUE OR BLACK INK AS SHOWN IN THIS EXAMPLE: X Proposals The Board of Directors recommends a vote “FOR” the proposals. 1a. Election of Director: 01.Philip R. McLoughlin FOR WITHHOLD 2. Approval of a proposal to amend DNP’s charter to increase the number of authorized shares of common stock. FOR AGAINST ABSTAIN Authorized Signatures — This section must be completed for your vote to be counted — Sign and Date Below Note: Please sign exactly as your name(s) appear(s) on this Proxy Card, and date it. When shares are held jointly, each holder should sign. When signing as attorney, executor, guardian, administrator, trustee, officer of corporation or other entity or in another representative capacity, please give the full title under the signature. Date (mm/dd/yyyy) — Please print date below Signature 1 — Please keep signature within the box Signature 2 — Please keep signature within the box xxxxxxxxxxxxxx DNP1 32455 xxxxxxxx 

DNP SELECT INCOME FUND INC. IMPORTANT PROXY INFORMATION Your Vote Counts! PLEASE USE THE 14 DIGIT CONTROL NUMBER & 8 DIGIT SECURITY CODE LISTED IN THE BOXES BELOW WHEN REQUESTING MATERIAL VIA THE TELEPHONE & INTERNET. When you are ready to vote, you can use the same Control Number & Security Code to record your vote. Shareholder Meeting Notice – THIS IS NOT A PROXY – Please read carefully for voting instructions. Important Notice Regarding the Availability of Proxy Materials for the DNP Select Income Fund Inc. Shareholders Meeting to be held virtually on March 7, 2022. As a shareholder, it is important for you to vote! On the back of this notice, you will find a summary of the proposals that require a shareholder vote at the Meeting. This communication is NOT a form for voting and presents only an overview of the more complete proxy materials that are available to you on the Internet or by mail. We encourage you to access and review all of the important information contained in the proxy materials before voting. The Joint Proxy Statement for the Meeting and Form of Proxy are available at: https://www.proxy-direct.com/dnp-32455 If you want to receive a paper copy of the documents or an email with a link to the documents, you must request them. There is no charge to you for requesting a copy. Paper materials will be mailed to the address on file within 3-business days of receipt of the request. Please make your request as soon as possible, but no later than February 24, 2022, to facilitate timely delivery. The Meeting of Shareholders of DNP Select Income Fund Inc. will be held virtually at the following website: meetnow.global/MT7S9RS on March 7, 2022, at 1:00 p.m., Eastern Time. To participate in the Virtual Meeting enter the 14-digit control number from the shaded box on this notice. ONLINE MATERIAL ACCESS AND PAPER COPY REQUESTS CAN BE MADE UTILIZING ONE OF THE THREE METHODS BELOW. YOU CAN ALSO USE ONE OF THESE THREE METHODS TO ELECT A PERMANENT DELIVERY PREFERENCE FOR FUTURE MEETINGS. ACCESS MATERIALS AND VOTE OR REQUEST PAPER DELIVERY OF MATERIALS EASY ONLINE ACCESS – REQUEST BY INTERNET Log on to the Internet and go to: https://www.proxy-direct.com/dnp-32455 On this site you can view the Proxy Statement and Form of Proxy online, request paper copies, request an email with a link to the materials and/or set future delivery preferences. Just follow the steps outlined on this secure website. TELEPHONE REQUESTS - CALL 1-877-816-5331 Obtain paper copies of the Proxy Statement and/or Form of Proxy with an option to set future delivery preference by touch tone phone. Call toll free from the U.S. or Canada at NO CHARGE to you. Follow the instructions provided in the recorded messages. E-MAIL REQUEST AT: proxymaterials@computershare.com: Email us to request Proxy Materials for the shareholder meeting and/or to set future delivery preferences. - Provide only your 14-Digit Control Number and 8-Digit Security Code as listed on this notice in your email request for materials. - If you want to elect to receive all future proxy materials in paper form or via email, please note your request and for email, provide the address. PAPER COPY REQUESTS SHOULD BE MADE NO LATER THAN FEBRUARY 24, 2022, TO FACILITATE TIMELY DELIVERY. DNP_32455_NA_122921_Pref

Your Fund Holdings: FUND DNP SELECT INCOME FUND INC. The following matter will be considered at the Meeting: 2.    Approval of a proposal to amend DNP’s charter to increase the number of authorized shares of common stock. The Board of Directors unanimously recommends that shareholders vote “FOR” the Proposal described in the Proxy Statement. Please refer to the Proxy Materials for further details on the proposal. YOUR VOTE IS IMPORTANT NO MATTER HOW MANY SHARES YOU OWN Common Questions about Notice and Access Why am I receiving a Notice of Internet Availability instead of a Proxy card and Proxy statement? Your fund has elected to utilize a distribution model authorized by the Securities and Exchange Commission in 2007. This model, known as Notice and Access, allows mutual funds and public companies to send you a Notice instead of a full set of printed proxy materials. As a shareholder, you can select the means by which you access those proxy materials. You can view the materials electronically via the Internet, or request a full set of printed materials for this Shareholder Meeting and all future meetings, or you can make that choice on a case by case basis. How do I access the materials, set my preference for future shareholder meeting materials and record my vote? On the front side of this Notice are easy to follow instructions on how to access Proxy materials electronically or request a full set of printed materials. Once you are on the website or ordering on the phone, you can also make your selection for future meetings. When you are ready to vote, electronic voting is available by Internet or Touch Tone Phone by using the Control Number and Security Code on the front of this Notice. The Touch Tone voting phone number is different from the ordering phone number and is displayed on the website. If you want to vote via Mail, you will need to request a paper copy of the materials to receive a Proxy Card and Return Envelope. If I request printed proxy materials, how long will it take for me to receive them? The SEC rule requires that the materials be sent via first class mail within three business days of receipt of your request. DNP_32455_NA_122921_Pref

EVERY SHAREHOLDER’S VOTE IS IMPORTANT We encourage you to take advantage of Internet or telephone voting. Both are available 24 hours a day, 7 days a week. EASY VOTING OPTIONS: VOTE ON THE INTERNET Log on to: www.proxy-direct.com or scan the QR code Follow the on-screen instructions available 24 hours VOTE BY PHONE Call 1-800-337-3503 Follow the recorded instructions available 24 hours VOTE BY MAIL Vote, sign and date this Proxy Card and return in the postage-paid envelope VOTE AT THE VIRTUAL MEETING at the following Website: meetnow.global/MT7S9RS on March 7, 2022 at 1:00 p.m., Eastern Time. To Participate in the Virtual Meeting, enter the 14-digit control number from the shaded box on this card. Please detach at perforation before mailing. PROXY DNP SELECT INCOME FUND INC. JOINT ANNUAL MEETING OF SHAREHOLDERS TO BE HELD ON MARCH 7, 2022 PREFERRED STOCK PROXY SOLICITED BY MANAGEMENT FROM PREFERRED SHAREHOLDERS. Jennifer S. Fromm, Alan M. Meder, Daniel J. Petrisko and William J. Renahan or any of them, each with full power of substitution, are authorized to vote all shares of preferred stock of DNP Select Income Fund Inc. (the “Fund”) owned by the undersigned at the Joint Annual Meeting of Shareholders to be held virtually at the following Website: meetnow.global/MT7S9RS March 7, 2022, at 1:00 p.m., Eastern Time, and at any adjournment of the meeting. To participate in the Virtual Meeting enter the 14-digit control number from the shaded box on this card. They shall vote in accordance with the instructions set forth on the reverse side hereof. VOTE VIA THE INTERNET: www.proxy-direct.com VOTE VIA THE TELEPHONE: 1-800-337-3503 CHANGE OF ADDRESS    COMMENTS DNP_32455_122921_Pref PLEASE MARK, SIGN, DATE AND RETURN THIS PROXY PROMPTLY USING THE ENCLOSED ENVELOPE. xxxxxxxxxxxxxx code

EVERY SHAREHOLDER’S VOTE IS IMPORTANT Important Notice Regarding the Availability of Proxy Materials for the Joint Annual Meeting of Shareholders to be held virtually on March 7, 2022. The Notice of Meeting, Joint Proxy Statement and Proxy Card are available at: https://www.proxy-direct.com/dnp-32455 Please detach at perforation before mailing. If no specific instructions are provided, this proxy will be voted “FOR” proposal 2 and in the discretion of the proxies upon such other business as may properly come before the meeting. TO VOTE MARK BLOCKS BELOW IN BLUE OR BLACK INK AS SHOWN IN THIS EXAMPLE: X Proposal The Board of Directors recommends a vote “FOR” the proposal. 2. Approval of a proposal to amend DNP’s charter to increase the number FOR AGAINST ABSTAIN of authorized shares of common stock. Authorized Signatures — This section must be completed for your vote to be counted — Sign and Date Below Note: Please sign exactly as your name(s) appear(s) on this Proxy Card, and date it. When shares are held jointly, each holder should sign. When signing as attorney, executor, guardian, administrator, trustee, officer of corporation or other entity or in another representative capacity, please give the full title under the signature. Date (mm/dd/yyyy) — Please print date below Signature 1 — Please keep signature within the box Signature 2 — Please keep signature within the box xxxxxxxxxxxxxx DNP2 32455 xxxxxxxx 

ANNUAL MEETING OF SHAREHOLDERS OF DTF TAX-FREE INCOME 2028 TERM FUND INC. March 7, 2022 NOTICE OF INTERNET AVAILABILITY OF PROXY MATERIAL: The Notice of Meeting, proxy statement and proxy card are available at http://www.astproxyportal.com/ast/14676 Please sign, date and mail your proxy card in the envelope provided as soon as possible. Please detach along perforated line and mail in the envelope provided. 20000000000000000000 030722 THE BOARD OF DIRECTORS RECOMMENDS A VOTE “FOR” THE ELECTION OF DIRECTOR. PLEASE SIGN, DATE AND RETURN PROMPTLY IN THE ENCLOSED ENVELOPE. PLEASE MARK YOUR VOTE IN BLUE OR BLACK INK AS SHOWN HERE 1c. Election of Director: NOMINEE: Philip R. McLoughlin FOR NOMINEE                FOR WITHHOLD NOMINEE AUTHORITY 3. Transact such other business as may properly come before the meeting, or any adjournment or postponement thereof. Shareholders of record at the close of business on December 10, 2021 are entitled to vote at the meeting. The undersigned hereby acknowledges receipt of the accompanying Notice of Joint Annual Meeting and Joint Proxy Statement for the Annual Meeting to be held on March 7, 2022. TO INCLUDE ANY COMMENTS, USE THE COMMENTS BOX ON THE REVERSE SIDE OF THIS CARD. To indicate change your the new address address on your in the account, address please space check above. the    Please box at note right and that changes this method. to the registered name(s) on the account may not be submitted via Signature of Shareholder                Date:                Signature of Shareholder                Date:                 Note: Please sign exactly as your name or names appear on this Proxy. When shares are held jointly, each holder should sign. When signing as executor, administrator, attorney, trustee or guardian, please give full title as such. If the signer is a corporation, please sign full corporate name by duly authorized officer, giving full title as such. If signer is a partnership, please sign in partnership name by authorized person.

ANNUAL MEETING OF SHAREHOLDERS OF DTF TAX-FREE INCOME 2028 TERM FUND INC. March 7, 2022 PROXY VOTING INSTRUCTIONS INTERNET - Access “www.voteproxy.com” and follow the on-screen instructions or scan the QR code with your smartphone. Have your proxy card available when you access the web page, and use the Company Number and Account Number shown on your proxy card. TELEPHONE - Call toll-free 1-800-PROXIES (1-800-776-9437) in the United States or 1-718-921-8500 from foreign countries from any touch-tone telephone and follow the instructions. Have your proxy card available when you call and use the Company Number and Account Number shown on your proxy card. Vote online/phone until 11:59 PM EST the day before the meeting. MAIL - Sign, date and mail your proxy card in the envelope provided as soon as possible. AT THE VIRTUAL MEETING - You may vote your shares at the following website: https://meetnow.global/MT7S9RS COMPANY NUMBER ACCOUNT NUMBER NOTICE OF INTERNET AVAILABILITY OF PROXY MATERIAL: The Notice of Meeting, proxy statement and proxy card are available at http://www.astproxyportal.com/ast/14676 Please detach along perforated line and mail in the envelope provided IF you are not voting via telephone or the Internet. ———————— 20000000000000000000 030722 THE BOARD OF DIRECTORS RECOMMENDS A VOTE “FOR” THE ELECTION OF DIRECTOR. x PLEASE SIGN, DATE AND RETURN PROMPTLY IN THE ENCLOSED ENVELOPE. PLEASE MARK YOUR VOTE IN BLUE OR BLACK INK AS SHOWN HERE 1c. Election of Director: FOR NOMINEE WITHHOLD AUTHORITY FOR NOMINEE NOMINEE: Philip R. McLoughlin 3. Transact such other business as may properly come before the meeting, or any adjournment or postponement thereof. Shareholders of record at the close of business on December 10, 2021 are entitled to vote at the meeting. The undersigned hereby acknowledges receipt of the accompanying Notice of Joint Annual Meeting and Joint Proxy Statement for the Annual Meeting to be held on March 7, 2022. TO INCLUDE ANY COMMENTS, USE THE COMMENTS BOX ON THE REVERSE SIDE OF THIS CARD. To change the address on your account, please check the box at right and indicate your new address in the address space above. Please note that changes to the registered name(s) on the account may not be submitted via this method. Signature of Shareholder Date: Signature of Shareholder Date: Note: Please sign exactly as your name or names appear on this Proxy. When shares are held jointly, each holder should sign. When signing as executor, administrator, attorney, trustee or guardian, please give full title as such. If the signer is a corporation, please sign full corporate name by duly authorized officer, giving full title as such. If signer is a partnership, please sign in partnership name by authorized person.