You are cordially invited to attend the 2026 Annual Meeting of Shareholders (the “Meeting”) of CĪON Investment Corporation (the “Company”) to be held on Thursday, June 25, 2026 at 3:00 p.m. Eastern Time. The Meeting will be a completely virtual meeting, which will be conducted via live webcast.

The Notice of Internet Availability of Proxy Materials you received and our proxy statement describe the matters on the agenda for the Meeting. Please read these materials so that you will know what we intend to act on at the Meeting. At the Meeting, you will be asked to:

Your vote is extremely important to us. If you will not vote at the Meeting virtually, we urge you to vote by following the instructions on the Notice of Internet Availability of Proxy Materials by Internet or telephone. On the Notice of Internet Availability of Proxy Materials, you also will find instructions on how to request a hard copy of the proxy statement and proxy card free of charge, and you may vote your proxy by returning a proxy card to us after you request the hard copy materials.

On behalf of management and the Board of Directors, we thank you for your continued support of the Company.

PLEASE FOLLOW THE INSTRUCTIONS IN THE NOTICE OF INTERNET AVAILABILITY OF PROXY MATERIALS TO VOTE VIA THE INTERNET OR TELEPHONE, OR REQUEST, SIGN, DATE AND RETURN A PROXY CARD TO CAST YOUR VOTE AS SOON AS POSSIBLE. YOUR VOTE IS IMPORTANT.

Notice is hereby given to the holders of shares of common stock, par value $0.001 per share (the “Shares”), of CĪON Investment Corporation, a Maryland corporation (the “Company”), that the 2026 Annual Meeting of Shareholders (the “Meeting”) will be held virtually on Thursday, June 25, 2026 at 3:00 p.m. Eastern Time. The Meeting will be a completely virtual meeting, which will be conducted via live webcast. You will be able to attend the Meeting online and submit your questions during the Meeting by visiting www.virtualshareholdermeeting.com/CION2026.

The Meeting is being held for the following purposes:

THE BOARD OF DIRECTORS, INCLUDING EACH OF THE INDEPENDENT DIRECTORS, UNANIMOUSLY RECOMMENDS A VOTE “FOR” EACH OF THE PROPOSALS LISTED ABOVE.

The close of business on April 30, 2026 has been fixed as the record date for the determination of shareholders entitled to notice of, and to vote at, the Meeting or at any adjournment or postponement thereof.

Your vote is extremely important to us. For instructions on how to attend and vote your Shares virtually at the Meeting, see the information in the accompanying proxy statement under the heading “Attending the Meeting and Other Voting Options”. If you will not vote at the Meeting virtually, we urge you to vote by following the instructions on the Notice of Internet Availability of Proxy Materials by Internet or telephone. On the Notice of Internet Availability of Proxy Materials, you also will find instructions on how to request a hard copy of the proxy statement and proxy card free of charge, and you may vote your proxy by returning a proxy card to us by mail after you request and receive the hard copy materials. In the event there are not sufficient votes for a quorum or to approve any of the proposals listed above, the Meeting may be postponed or adjourned in order to permit further solicitation of proxies by the Company.

The proxy statement and the Company’s annual report to shareholders for the year ended December 31, 2025 (the “Annual Report”) are available at www.proxyvote.com. Such Annual Report is also available at www.cionbdc.com.

This Proxy Statement is furnished in connection with the solicitation of proxies on behalf of the Board of Directors (the “Board” and each member thereof, a “Director” and collectively, the “Directors”) of CĪON Investment Corporation, a Maryland corporation (the “Company”), for use at the Company’s 2026 Annual Meeting of Shareholders (the “Meeting”) to be held virtually on Thursday, June 25, 2026 at 3:00 p.m. Eastern Time, or at any and all adjournments or postponements thereof, for the purposes set forth in the accompanying Notice of Annual Meeting of Shareholders dated April 30, 2026 (the “Notice”). The Meeting will be a completely virtual meeting, which will be conducted via live webcast. You will be able to attend the Meeting online and submit your questions during the Meeting by visiting www.virtualshareholdermeeting.com/CION2026.

You may vote your shares of common stock, par value $0.001 per share (the “Shares”), at the Meeting only if you were a shareholder of record at the close of business on the record date. The Board has fixed the close of business on April 30, 2026 as the record date (the “Record Date”) for the determination of shareholders entitled to receive notice of, and to vote at, the Meeting. As of the Record Date, the Company had 49,789,210 Shares outstanding.

The Meeting is being held for the following purposes:

You or your proxyholder can participate, vote and examine our shareholder list at the virtual Meeting by visiting www.virtualshareholdermeeting.com/CION2026 and using the 16-digit control number included in your Notice of Internet Availability of Proxy Materials. We are furnishing proxy materials to our shareholders on the Internet, rather than mailing printed copies of those materials to each shareholder. If you received a Notice of Internet Availability of Proxy Materials by mail, you will not receive a printed copy of the proxy materials unless you request them. Instead, the Notice of Internet Availability of Proxy Materials will instruct you as to how you may access and review the proxy materials, and vote your proxy via the Internet, telephone or by mail. If a form of proxy is properly executed and returned in time to be voted at the Meeting, the Shares covered thereby will be voted at the Meeting in accordance with the instructions marked thereon. All properly executed proxies received by the Board that do not specify how Shares should be voted will be voted “FOR” each of the above Proposals, and in the discretion of the persons named as proxies in connection with any other matter that may properly come before the Meeting or at any adjournment or postponement thereof. A shareholder who has given a proxy may revoke such proxy any time before it is exercised by (i) attending and voting virtually at the Meeting, (ii) giving written notice of such revocation to the Secretary of the Company, or (iii) returning a properly executed, later-dated proxy. You will be eligible to vote your shares electronically via the Internet, telephone, or by mail by following the instructions on the Notice of Internet Availability of Proxy Materials.

This proxy statement and the Company’s annual report to shareholders for the year ended December 31, 2025 (the “Annual Report”) are available at www.proxyvote.com. Such Annual Report is also available at www.cionbdc.com.

A quorum must be present at the Meeting for any business to be conducted. Under the Company’s Bylaws, one-third of the number of Shares entitled to be cast, present virtually or by proxy, constitutes a quorum for the transaction of business. Shareholders of the Company are entitled to one vote for each Share held. Abstentions, withheld votes, and broker “non-votes” (that is, proxies from brokers or nominees indicating that such persons have not received instructions from the beneficial owner or other persons entitled to vote shares on a particular matter with respect to which the brokers or nominees do not have discretionary power) will be treated as Shares that are present for purposes of determining the presence of a quorum for transacting business at the Meeting. However, abstentions and broker non-votes are not counted as votes cast.

The Chairman of the Meeting or the shareholders entitled to vote at the Meeting, present virtually or by proxy, shall have the power to adjourn the Meeting from time to time, which would include the ability to adjourn the Meeting to a date not more than 120 days after the Record Date without notice other than the announcement at the Meeting of the future date, time and location of the reconvened Meeting. Any business that might have been transacted at the Meeting originally called may be transacted at any such adjourned session(s) at which a quorum is present. If sufficient votes in favor of one or more proposals have been received, such proposals can be acted upon, and such actions will be final, regardless of any subsequent adjournment to consider other proposals.

Shareholders are entitled to cast one vote for each Share held and fractional votes for each fractional Share held. The table below provides a summary of the vote required for each proposal, with additional discussion thereafter:

Class II Director Proposal: The Directors shall be elected by a plurality of all the votes cast at the Meeting (i.e., more votes for the Director than any other option for the position), provided that a quorum is present. Each Share may be voted for each of the Director nominees. Proxies received will be voted “FOR” the election of the Director nominees named herein unless shareholders designate otherwise. Votes that are withheld will have no effect on the outcome of the vote on this proposal. Shares represented by broker non-votes are also not considered votes cast and thus have no effect on this proposal. As a result, if you hold Shares in “street name” through a broker, bank or other nominee, your broker, bank or nominee will not be permitted to exercise voting discretion with respect to the Class II Director Proposal. Therefore, if you do not vote and you do not give your broker or other nominee specific instructions on how to vote for you, then your Shares will have no effect on the Class II Director Proposal.

Auditors Proposal: The affirmative vote of a majority of the votes cast at the Meeting virtually or by proxy is required to ratify the appointment of RSM US LLP to serve as the Company’s independent registered public accounting firm for the fiscal year ending December 31, 2026. Abstentions will not be included in determining the number of votes cast and, as a result, will not have any effect on the result of the vote. Because brokers will have discretionary authority to vote for the ratification of the appointment of the Company’s independent registered public accounting firm in the event that they do not receive voting instructions from the beneficial owner of the Shares, there will not be any broker non-votes with respect to this proposal. As a result, if you beneficially own your Shares and you do not provide your broker, bank or nominee with voting instructions, then your broker, bank or nominee will be able to vote your Shares for you on the Auditors Proposal.

The Company will be hosting the Meeting live via audio webcast. Any shareholder can attend the Meeting live online at www.virtualshareholdermeeting.com/CION2026. If you were a shareholder as of the Record Date, or you hold a valid proxy for the Meeting, you can vote at the Meeting. A summary of the information you need to attend the Meeting online is provided below:

To attend and participate in the Meeting virtually, you will need the 16-digit control number included on the Notice of Internet Availability of Proxy Materials. If your Shares are held in “street name,” you should contact your bank or broker to obtain your 16-digit control number or otherwise vote through your bank or broker. If you lose your 16-digit control number, you may join the Meeting as a “Guest”, but you will not be able to vote, ask questions or access the list of shareholders as of the Record Date. The Company will have technicians ready to assist with any technical difficulties that shareholders may have accessing the virtual meeting website. If you encounter any difficulties accessing the virtual meeting website during the check-in or Meeting time, please call the technical support number that will be posted on the Meeting login page.

If you will not vote at the Meeting virtually, please vote by following the instructions on the Notice of Internet Availability of Proxy Materials by Internet or telephone. On the Notice of Internet Availability of Proxy Materials, you also will find instructions on how to request a hard copy of the proxy statement and proxy card free of charge, and you may vote your proxy by returning a proxy card to us by mail after you request and receive the hard copy materials. To vote by internet or telephone, please use the control number and follow the instructions as described on the Notice of Internet Availability of Proxy Materials. If a proxy is submitted and received prior to the Meeting and has not been revoked, the Shares represented thereby will be voted in accordance with the instructions marked on the returned proxy or, if no instructions are marked, the proxy will be voted “FOR” the proposals and in the discretion of the persons named as proxies in connection with any other matter that may properly come before the Meeting or any adjournment(s) or postponement(s) thereof. If you have any questions regarding the proxy materials, please contact the Company at 800-343-3736.

Shareholders, other than those who hold Shares through a Tel Aviv Stock Exchange Ltd. (“TASE”) member, may provide their voting instructions through the Internet, by telephone or by mail by following the instructions on the Notice of Internet Availability of Proxy Materials. These options require shareholders to input their specific control number as discussed above, which is provided with the Notice of Internet Availability of Proxy Materials. If you vote using the Internet, after visiting www.proxyvote.com and inputting your control number, you will be prompted to provide your voting instructions. Shareholders will have an opportunity to review their voting instructions and make any necessary changes before submitting them and terminating their Internet link. Shareholders who vote via the Internet, in addition to confirming their voting instructions prior to submission, will receive upon request an e-mail confirming their instructions.

Shares held by a TASE member cannot be voted during the Meeting. If your Shares are held by a TASE member and you wish to vote your Shares, you must complete, sign and date the form of proxy card that the Company filed via MAGNA and attach to it an ownership certificate from the TASE member through which your Shares are registered (i.e., your broker, bank or other nominee) indicating that you were the beneficial owner of the Shares on the Record Date, the record date for voting, and return the proxy card along with the ownership certificate to the Company’s Israeli counsel, Goldfarb Gross Seligman & Co. (“Goldfarb”), c/o Hod Mimun, 98 Yigal Alon Street, 44th Floor, Tel Aviv 6789141, Israel (email: [email protected]). The proxy card and ownership certificate must be received no later than June 21, 2026 to be included in the tally of Shares voted.

However, if your Shares are held by a TASE member, you may participate and ask questions during the Meeting even if you cannot vote your Shares. In order to participate and ask questions (but not vote your Shares) during the

Meeting, you will need to obtain from your TASE member an executed ownership certificate, signed by your TASE member with respect to the Record Date, and e-mail the executed form to Goldfarb, c/o Hod Mimun, 98 Yigal Alon Street, 44th Floor, Tel Aviv 6789141, Israel (email: [email protected]), no later than the close of business in Israel on June 21, 2026. Once Goldfarb has received your properly executed certificate, Goldfarb will e-mail you a control number that you can use to enter the Meeting at www.virtualshareholdermeeting.com/CION2026.

If a shareholder, other than those who hold Shares through a TASE member, wishes to participate in the Meeting, but does not wish to give a proxy by Internet, the shareholder may attend the Meeting in person (virtually) and vote at the Meeting or request and submit a proxy card by following the instructions on the Notice of Internet Availability of Proxy Materials.

The Company combines mailings for multiple accounts going to a single household by delivering to that address in a single envelope a copy of the document (annual reports, prospectuses, proxy statements, Notice of Internet Availability of Proxy Materials, etc.) or other communications for all accounts who have consented or are deemed to have consented to receiving such communications in such manner in accordance with the rules of the Securities and Exchange Commission (the “SEC”). If you do not want the Company to continue consolidating your mailings and would prefer to receive separate mailings of Company communications, or you are now receiving multiple copies of these documents and would like to receive a single copy in the future, please contact the Company’s transfer agent, SS&C Technologies, Inc. at (800) 343-3736 or send mail to CĪON Investment Corporation, c/o SS&C Technologies, Inc., 430 West 7^th Street, Kansas City, Missouri 64105.

This Proxy Statement and the other proxy materials are available online at www.proxyvote.com (please have the control number found on the Notice of Internet Availability of Proxy Materials ready when you visit this website).

It is expected that the solicitation of proxies will be primarily by mail. The Company’s officers, personnel of CION Investment Management, LLC, the Company’s investment adviser (“CIM”), and any authorized proxy solicitation agent, may also solicit proxies by telephone, internet or in person. If the Company records votes through the internet or by telephone, it will use procedures designed to authenticate shareholders’ identities, to allow shareholders to authorize the voting of their Shares in accordance with their instructions and to confirm that their identities and votes have been properly recorded. The Company has requested that brokers, nominees, fiduciaries, and other persons holding Shares in their names, or in the name of their nominees, which are beneficially owned by others, forward the proxy materials to, and obtain proxies from, such beneficial owners. The Company will reimburse such persons for their reasonable expenses in so doing.

The Company will pay the expenses associated with this proxy statement and solicitation. The Company has engaged Broadridge Financial Services, Inc., an independent proxy solicitation firm, to assist in the solicitation of proxies for an estimated fee of approximately $50,000, plus out-of-pocket expenses, all of which will be paid by the Company.

The following table sets forth, as of the Record Date, the beneficial ownership of the nominees for Director, the Company’s executive officers and Directors, each person known to the Company to beneficially own 5% or more of the outstanding Shares, and all of the Company’s executive officers and Directors as a group.

Beneficial ownership is determined in accordance with the rules of the SEC and includes voting or investment power with respect to the securities or has the right to acquire such powers within 60 days. Ownership information for those persons who beneficially own 5% or more of the Company’s Shares is based upon filings by such persons with the SEC, information furnished by the Company’s transfer agent and other information obtained from such persons, if available.

Unless otherwise indicated, the Company believes that each beneficial owner set forth in the table has sole voting and investment power and has the same address as the Company. The Company’s address is 100 Park Avenue, 25^th Floor, New York, NY 10017.

Set forth in the table below is the dollar range of equity securities of the Company beneficially owned by each Director as of the Record Date.

The Meeting will be held on Thursday, June 25, 2026 at 3:00 p.m. Eastern Time. The Meeting will be a completely virtual meeting, which will be conducted via live webcast.

The Company has proposed for shareholder approval proposals for the election of two Class II Directors, or the Class II Director Proposal, and the ratification of RSM US LLP as the Company’s independent registered public accounting firm for the year ending December 31, 2026, or the Auditors Proposal. Please see the list of Proposals above and the detailed discussions of each Proposal below for more information.

The Record Date for the determination of holders of Shares entitled to notice of and to vote at the Meeting, or any adjournment or postponement of the Meeting, is the close of business on April 30, 2026. As of the Record Date, approximately 49,789,210 Shares were issued and outstanding and entitled to vote at the Meeting.

Shareholders are entitled to cast one vote for each Share held and fractional votes for each fractional Share held.

The Company will be hosting the Meeting live via audio webcast. Any shareholder can attend the Meeting live online at www.virtualshareholdermeeting.com/CION2026. If you were a shareholder as of the Record Date, or you hold a valid proxy for the Meeting, you can vote at the Meeting. A summary of the information you need to attend the Meeting online is provided below:

To attend and participate in the Meeting virtually, you will need the 16-digit control number included on the Notice of Internet Availability of Proxy Materials. If your Shares are held in “street name,” you should contact your bank or broker to obtain your 16-digit control number or otherwise vote through your bank or broker. If you lose your 16-digit control number, you may join the Meeting as a “Guest”, but you will not be able to vote, ask questions or access the list of shareholders as of the Record Date. The Company will have technicians ready to assist with any technical difficulties that shareholders may have accessing the virtual meeting website. If you encounter any difficulties accessing the virtual meeting website during the check-in or Meeting time, please call the technical support number that will be posted on the Meeting login page.

If you will not vote at the Meeting virtually, please vote by following the instructions on the Notice of Internet Availability of Proxy Materials by Internet or telephone. On the Notice of Internet Availability of Proxy Materials, you also will find instructions on how to request a hard copy of the proxy statement and proxy card free of charge, and you may vote your proxy by returning a proxy card to us by mail after you request and receive the hard copy materials. To vote by internet or telephone, please use the control number and follow the instructions as described on the Notice of Internet Availability of Proxy Materials. If a proxy is submitted and received prior to the Meeting and has not been revoked, the Shares represented thereby will be voted in accordance with the instructions marked on the returned proxy or, if no instructions are marked, the proxy will be voted “FOR” the proposals and in the discretion of the persons named as proxies in connection with any other matter that may properly come before the Meeting or any adjournment(s) or postponement(s) thereof. If you have any questions regarding the proxy materials, please contact the Company at 800-343-3736.

Shareholders, other than those who hold Shares through a TASE member, may provide their voting instructions through the Internet, by telephone or by mail by following the instructions on the Notice of Internet Availability of Proxy Materials. These options require shareholders to input their specific control number as discussed above, which is provided with the Notice of Internet Availability of Proxy Materials. If you vote using the Internet, after visiting www.proxyvote.com and inputting your control number, you will be prompted to provide your voting instructions. Shareholders will have an opportunity to review their voting instructions and make any necessary changes before submitting them and terminating their Internet link. Shareholders who vote via the Internet, in addition to confirming their voting instructions prior to submission, will receive upon request an e-mail confirming their instructions.

Shares held by a TASE member cannot be voted during the Meeting. If your Shares are held by a TASE member and you wish to vote your Shares, you must complete, sign and date the form of proxy card that the Company filed via MAGNA and attach to it an ownership certificate from the TASE member through which your Shares are registered (i.e., your broker, bank or other nominee) indicating that you were the beneficial owner of the Shares on the Record Date, the record date for voting, and return the proxy card along with the ownership certificate to the Company’s Israeli counsel, Goldfarb, c/o Hod Mimun, 98 Yigal Alon Street, 44th Floor, Tel Aviv 6789141, Israel (email: [email protected]). The proxy card and ownership certificate must be received no later than June 21, 2026 to be included in the tally of Shares voted.

However, if your Shares are held by a TASE member, you may participate and ask questions during the Meeting even if you cannot vote your Shares. In order to participate and ask questions (but not vote your Shares) during the Meeting, you will need to obtain from your TASE member an executed ownership certificate, signed by your TASE member with respect to the Record Date, and e-mail the executed form to Goldfarb, c/o Hod Mimun, 98 Yigal Alon Street, 44th Floor, Tel Aviv 6789141, Israel (email: [email protected]), no later than the close of business in Israel on June 21, 2026. Once Goldfarb has received your properly executed certificate, Goldfarb will e-mail you a control number that you can use to enter the Meeting at www.virtualshareholdermeeting.com/CION2026.

If a shareholder, other than those who hold Shares through a TASE member, wishes to participate in the Meeting, but does not wish to give a proxy by Internet, the shareholder may attend the Meeting in person (virtually) and vote at the Meeting or request and submit a proxy card by following the instructions on the Notice of Internet Availability of Proxy Materials.

It is expected that the solicitation of proxies will be primarily by mail. The Company’s officers, personnel of CIM and any authorized proxy solicitation agent, may also solicit proxies by telephone, internet or in person. If the Company records votes through the internet or by telephone, it will use procedures designed to authenticate shareholders’ identities, to allow shareholders to authorize the voting of their Shares in accordance with their instructions and to confirm that their identities and votes have been properly recorded. The Company has requested that brokers, nominees, fiduciaries, and other persons holding Shares in their names, or in the name of their nominees, which are beneficially owned by others, forward the proxy materials to, and obtain proxies from, such beneficial owners. The Company will reimburse such persons for their reasonable expenses in so doing.

The Company will pay the expenses associated with this proxy statement and solicitation. The Company has engaged Broadridge Financial Services, Inc., an independent proxy solicitation firm, to assist in the solicitation of proxies for an estimated fee of approximately $50,000, plus out-of-pocket expenses, all of which will be paid by the Company.

If the form of proxy is properly executed and returned in time to be voted at the Meeting, the Shares covered thereby will be voted at the Meeting in accordance with the instructions marked thereon. All properly executed proxies received by the Board that do not specify how Shares should be voted will be voted “FOR” each of the Proposals, and in the discretion of the persons named as proxies in connection with any other matter that may properly come before the Meeting or at any adjournment or postponement thereof. A shareholder who has given a proxy may revoke such proxy any time before it is exercised by (i) attending and voting virtually at the Meeting, (ii) giving written notice of such revocation to the Secretary of the Company, or (iii) returning a properly executed, later-dated proxy.

If your proxy card is signed and returned without specifying your choices, your Shares will be voted as recommended by the Board and in the discretion of the persons named as proxies in connection with any other matter that may properly come before the Meeting or any adjournment(s) or postponement(s) thereof.

A quorum must be present at the Meeting for any business to be conducted. Under the Company’s Bylaws, one-third of the number of Shares entitled to be cast, present virtually or by proxy, constitutes a quorum for the transaction of business. Shareholders of the Company are entitled to one vote for each Share held. Abstentions, withheld votes, and broker “non-votes” (that is, proxies from brokers or nominees indicating that such persons have not received instructions from the beneficial owner or other persons entitled to vote shares on a particular matter with respect to which the brokers or nominees do not have discretionary power) will be treated as Shares that are present for purposes of determining the presence of a quorum for transacting business at the Meeting. However, abstentions and broker non-votes are not counted as votes cast.

Class II Director Proposal: The Directors shall be elected by a plurality of all the votes cast at the Meeting (i.e., more votes for the Director than any other option for the position), provided that a quorum is present. Each Share may be voted for each of the Director nominees. Proxies received will be voted “FOR” the election of the Director nominees named herein unless shareholders designate otherwise. Votes that are withheld will have no effect on the outcome of the vote on this proposal. Shares represented by broker non-votes are also not considered votes cast and thus have no effect on this proposal. The Class II Director Proposal is not a routine matter. As a result, if you hold Shares in “street name” through a broker, bank or other nominee, your broker, bank or nominee will not be permitted to exercise voting discretion with respect to the Class II Director Proposal. Therefore, if you do not vote and you do not give your broker or other nominee specific instructions on how to vote for you, then your Shares will have no effect on the Class II Director Proposal.

Auditors Proposal: The affirmative vote of a majority of the votes cast at the Meeting virtually or by proxy is required to ratify the appointment of RSM US LLP to serve as the Company’s independent registered public accounting firm for the fiscal year ending December 31, 2026. Abstentions will not be included in determining the number of votes cast and, as a result, will not have any effect on the result of the vote. Because the Auditor Proposal is a routine matter, brokers will have discretionary authority to vote for the ratification of the appointment of the Company’s independent registered public accounting firm in the event that they do not receive voting instructions from the beneficial owner of the Shares and there will not be any broker non-votes with respect to this proposal. As a result, if you beneficially own your Shares and you do not provide your broker, bank or nominee with voting instructions, then your broker, bank or nominee will be able to vote your Shares for you on the Auditors Proposal.

The Chairman of the Meeting or the shareholders entitled to vote at the Meeting, present virtually or by proxy, shall have the power to adjourn the Meeting from time to time, which would include the ability to adjourn the Meeting to a date not more than 120 days after the Record Date without notice other than the announcement at the Meeting of the future date, time and location of the reconvened Meeting. Any business that might have been transacted at the Meeting originally called may be transacted at any such adjourned session(s) at which a quorum is present. If sufficient votes in favor of one or more proposals have been received, such proposals can be acted upon, and such actions will be final, regardless of any subsequent adjournment to consider other proposals.

A “broker non-vote” occurs when a broker who holds Shares for the beneficial owner does not vote on a proposal because the broker does not have discretionary voting authority for that proposal and has not received instructions from the beneficial owner of the Shares. Broker non-votes will be counted as present for the purposes of determining a quorum for the Meeting but are not counted as votes cast.

None of the proposals, if approved, entitle shareholders to appraisal rights under Maryland law or the Company’s charter.

If you have any questions regarding the proxy materials, please contact the Company at 800-343-3736.

At the Meeting, shareholders are being asked to consider the election of two of the current Independent Directors (as defined below) of the Company, Robert A. Breakstone and Catherine K. Choi. Pursuant to the Company’s charter and Bylaws, the Board may modify the number of Directors on the Board, provided that the number of Directors will not be fewer than one, the minimum number required by the Maryland General Corporation Law (the “MGCL”), or greater than twelve. Pursuant to the Company’s charter, the Company’s Directors are divided into three classes. Each class of Directors will hold office for a three-year term. At each annual meeting of shareholders, the successors to the class of Directors whose terms expire at such meeting will be elected to hold office for a term expiring at the annual meeting of shareholders held in the third year following the year of their election. Each Director will hold office for the term to which he or she is elected and serve until his or her successor is duly elected and qualified. The Board is currently comprised of eight Directors as set forth below, six of whom are independent.

On April 17, 2026, Aron I. Schwartz, a Class II Independent Director, notified the Board that he will not stand for re-election to the Board at the Meeting and will depart from the Board and the Board committees on which he serves effective as of the date of the Meeting due to other professional opportunities that he has. Mr. Schwartz will continue to serve as a Director and a member of the audit committee, nominating and corporate governance committee and compensation committee until the date of the Meeting. Mr. Schwartz’s decision not to stand for reelection did not arise from any disagreement with the Company on any matter relating to the Company’s operations, policies or practices. In connection with Mr. Schwartz’s departure and pursuant to the Company’s Bylaws, the Board has determined not to fill the resulting vacancy and has duly approved a reduction in the size of the Board from eight to seven directors, five of whom are independent, effective as of the date of the Meeting.

Mr. Breakstone and Ms. Choi have been nominated for election by the Board to each serve a three-year term expiring at the 2029 annual meeting of shareholders or until their successors are duly elected and qualified. The Directors have agreed to serve as Directors if elected and have consented to be named as nominees. No person being nominated as a Director is being proposed for election pursuant to any agreement or understanding between any such person and the Company.

A shareholder can vote for, or withhold his or her vote from, each of the Director nominees. In the absence of instructions to the contrary, it is the intention of the persons named as proxies to vote such proxy “FOR” the election of the Director nominees named herein. If the Director nominees should decline or be unable to serve as a Director, it is intended that the proxy will be voted for the election of such person or persons as are nominated as replacements. The Board has no reason to believe that any of the persons named will be unable or unwilling to serve.

Certain information pertaining to the Director nominees and other Directors and executive officers of the Company is set forth below, including their names, ages, a brief description of their recent business experience, including present occupations and employment, certain directorships that each person held during the last five years, and the year in which each person became a Director of the Company. The Board oversees the Company’s business and investment activities and is responsible for protecting the interests of the Company’s shareholders. The responsibilities of the Board include, among other things, the oversight of the Company’s investment activities, oversight of the activities of CIM as the Company’s valuation designee, who performs the quarterly valuation of the Company’s assets, oversight of the Company’s financing arrangements and corporate governance activities.

A majority of the members of the Board are not “interested persons” of the Company or CIM, as defined in Section 2(a)(19) of the Investment Company Act of 1940, as amended (the “1940 Act”), and as required by Rule 303A.00 of the NYSE Listed Company Manual. These individuals are referred to as the Company’s independent directors (the “Independent Directors”). Section 2(a)(19) of the 1940 Act defines an “interested person” to include,

among other things, any person who has, or within the last two years had, a material business or professional relationship with the Company. The members of the Board that are not Independent Directors are referred to as interested directors (the “Interested Directors”).

The Board has determined that the following Director nominees are Independent Directors: Mr. Breakstone and Ms. Choi. The Board has determined that the following Directors are also Independent Directors: Messrs. Estrada, Finlay and Hedin. The Board has determined that the following Directors are Interested Directors: Messrs. Gatto and Reisner. Based upon information requested from each Director concerning his or her background, employment and affiliations, the Board has affirmatively determined that none of the Independent Directors has, or within the last two years had, a material business or professional relationship with the Company, other than in his or her capacity as a member of the Board or any Board committee or as a shareholder.

Through its direct oversight role, and indirectly through its committees, the Board performs a risk oversight function for the Company consisting of, among other things, the following activities: (1) at regular and special Board meetings, and on an ad hoc basis as needed, receiving and reviewing reports related to the Company’s performance and operations; (2) reviewing and approving, as applicable, the Company’s compliance policies and procedures; (3) meeting with the portfolio management team to review investment strategies, techniques and the processes used to manage related risks; (4) meeting with, or reviewing reports prepared by, the representatives of the Company’s key service providers, including the Company’s investment adviser, administrator, and independent registered public accounting firm, to review and discuss the Company’s activities and to provide direction with respect thereto; and (5) engaging the services of the Company’s chief compliance officer to test the Company’s compliance procedures and certain of its service providers.

Messrs. Gatto and Reisner, who are “interested persons” as defined in Section 2(a)(19) of the 1940 Act, serve as the Company’s co-chief executive officers and co-chairmen of the Board. The Board believes that Messrs. Gatto and Reisner, as the Company’s co-chief executive officers and co-chairmen of the Board, are the Directors with the most knowledge of the Company’s business strategy and are best situated to serve as chairmen of the Board. The Company’s charter, as well as regulations governing business development companies (“BDCs”) generally and Rule 303A.00 in the NYSE Listed Company Manual, require that a majority of the Board be persons other than “interested persons” of the BDC, as defined in Section 2(a)(19) of the 1940 Act. The Board does not currently have a separately designated lead Independent Director and has not designated one Independent Director to preside over all executive sessions of Independent Directors. Rather, Aron I. Schwartz and Robert A. Breakstone, each Independent Director and chairman of the audit committee and nominating and corporate governance committee, respectively, preside over such executive sessions on a rotational basis. Communications may be sent to the Independent Directors to: Stephen Roman, Corporate Secretary, CĪON Investment Corporation, 100 Park Avenue, 25th Floor, New York, NY 10017. The Board, after considering various factors, including, among other things, its current duties, responsibilities and the Company’s overall business, has concluded that its structure is appropriate at this time. The Board will continue to monitor the Company’s structure and determine whether it remains appropriate based on the complexity of the Company’s operations.

There have been no purchases or sales of securities of CIM or its parent or subsidiaries by any of the Company’s Directors since the beginning of the most recently completed fiscal year.

The Board has established a standing audit committee, a standing nominating and corporate governance committee and a standing compensation committee. The Board met five times and took action by unanimous written consent four times during the fiscal year ended December 31, 2025. Each Director attended all meetings of the Board held during the fiscal year ended December 31, 2025. The Company does not have a formal policy regarding Director attendance at an annual meeting of shareholders. As Mr. Schwartz will not stand for re-election to the Board and will depart from the Board and the Board committees on which he serves effective as of the date of the Meeting, the Board expects to update the composition of the Board committees and appoint a new audit committee chair prior to the filing of the Company’s Quarterly Report on Form 10-Q for the period ended March 31, 2026.

The members of the Company’s audit committee are Robert A. Breakstone, Peter I. Finlay, Aron I. Schwartz, Earl V. Hedin, Catherine K. Choi and Edward J. Estrada, each of whom meets the independence standards established by the SEC for audit committees and is independent for purposes of the 1940 Act and the NYSE Listed Company Manual. Mr. Schwartz serves as chairman of the audit committee. The Board has determined that Mr. Schwartz is an “audit committee financial expert” as that term is defined under Item 407 of Regulation S-K of the Exchange Act. The audit committee operates pursuant to a written charter and meets periodically as necessary. A copy of the audit committee’s charter is available on the Company’s website: www.cionbdc.com. The audit committee is responsible for selecting, engaging and discharging the Company’s independent registered public accounting firm (the “independent accountants”), reviewing the plans, scope and results of the audit engagement with the independent accountants, approving professional services provided by the independent accountants (including compensation therefor), reviewing the independence of the independent accountants and reviewing the adequacy of the Company’s internal controls over

financial reporting. The audit committee also establishes guidelines, reviews preliminary valuations and makes recommendations to the Board regarding the valuation of the Company’s loans and other investments. The audit committee met four times in 2025.

The members of the Company’s nominating and corporate governance committee are Robert A. Breakstone, Peter I. Finlay, Aron I. Schwartz, Earl V. Hedin, Catherine K. Choi and Edward J. Estrada, each of whom meets the independence standards established by the SEC for governance committees and is independent for purposes of the 1940 Act and the NYSE Listed Company Manual. Mr. Breakstone serves as chairman of the nominating and corporate governance committee. The nominating and corporate governance committee operates pursuant to a written charter and meets periodically as necessary. A copy of the nominating and corporate governance committee’s charter is available on the Company’s website: www.cionbdc.com. The nominating and corporate governance committee is responsible for selecting, researching, and nominating Directors for election by the Company’s shareholders, selecting nominees to fill vacancies on the Board or a committee of the Board, developing and recommending to the Board a set of corporate governance principles and overseeing the evaluation of the Board and the Company’s management. The nominating and corporate governance committee will consider shareholders’ proposed nominations for Directors. The nominating and corporate governance committee met four times in 2025.

The nominating and corporate governance committee considers candidates suggested by its members and other Directors, as well as the Company’s management and shareholders. A shareholder who wishes to recommend a prospective nominee for the Board must provide notice to the Company’s corporate secretary in accordance with the requirements set forth in the Company’s Bylaws, the nominating and corporate governance committee charter and any applicable law, rule or regulation regarding Director nominations. Nominations should be sent to Stephen Roman, Corporate Secretary, CĪON Investment Corporation, 100 Park Avenue, 25th Floor, New York, NY 10017. To have a candidate considered by the nominating and corporate governance committee, a shareholder must submit the recommendation in writing and must include the following information:

The members of the Company’s compensation committee are Robert A. Breakstone, Peter I. Finlay, Aron I. Schwartz, Earl V. Hedin, Catherine K. Choi and Edward J. Estrada, each of whom meets the independence standards established by the SEC for compensation committees and is independent for purposes of the 1940 Act and the NYSE Listed Company Manual. The Company currently does not have a chairperson of the compensation committee. The compensation committee operates pursuant to a written charter and meets periodically as necessary. A copy of the compensation committee’s charter is available on the Company’s website: www.cionbdc.com. The compensation committee is responsible for determining, or recommending to the Board for determination, the compensation, if any, of the Company’s co-chief executive officers and all other executive officers. The compensation committee also assists the Board with matters related to compensation generally, except with respect to compensation of the Directors.

The Company’s executive officers do not receive any direct compensation from the Company. However, the compensation payable to CIM pursuant to the investment advisory agreement has been separately approved by a majority of the Independent Directors, as well as the Company’s shareholders in 2021, and renewed annually by such Independent Directors commencing in 2023. As none of the Company’s executive officers currently are compensated by the Company, the compensation committee does not produce and/or review a report on executive compensation practices. The compensation committee did not hold any formal meetings in 2025.

Directors who are not Interested Directors are entitled to receive annual cash retainer fees, fees for attending Board and committee meetings and annual fees for serving as a committee chairperson. These Directors are Robert A.

Breakstone, Peter I. Finlay, Aron I. Schwartz, Earl V. Hedin, Catherine K. Choi and Edward J. Estrada. These Directors are paid (i) annual cash retainer fees of $100,000; (ii) fees for attending Board and committee meetings (in-person or telephonically) of $1,000 per meeting; and (iii) annual fees of $25,000 for serving as a committee chairperson (per committee). Amounts payable under this arrangement are determined and paid quarterly in arrears.

The Company also reimburses each of the above Directors for all reasonable and authorized business expenses in accordance with the Company’s policies as in effect from time to time. The Company did not pay compensation to its Directors who also serve in an executive officer capacity for the Company or CIM for the year ended December 31, 2025. No Director or executive officer receives pension or retirement benefits from the Company.

The below table shows information regarding the compensation earned by the Directors of the Company for the fiscal year ended December 31, 2025. No information has been provided with respect to executive officers of the Company who are not Directors since the Company’s executive officers do not receive any direct compensation from the Company.

The Board welcomes communications from the Company’s shareholders. Shareholders may send communications to the Board, or to any particular Director, to the following address: c/o CĪON Investment Corporation, 100 Park Avenue, 25^th Floor, New York, NY 10017. Shareholders should indicate clearly the Director or Directors to whom the communication is being sent so that each communication may be forwarded directly to the appropriate Director(s).

The Company has adopted a code of business conduct pursuant to Rule 17j-1 promulgated under the 1940 Act, which applies to, among others, the Company’s officers, including the Company’s Co-Chief Executive Officers and its Chief Financial Officer, as well as the members of the Board. The Company’s code of business conduct can be accessed via its website at www.cionbdc.com. The Company intends to disclose any amendments to or waivers of required provisions of the code of business conduct on Form 8-K or on the Company’s website.

The Company has adopted corporate governance guidelines pursuant to Section 303A.09 of the NYSE Listed Company Manual, which can be accessed via the Company’s website at www.cionbdc.com.

Based on publicly available information, the Company is not aware of any Director, officer, beneficial owner of more than ten percent of any class of the Company’s equity securities registered pursuant to Section 12 of the Exchange Act, or any other person subject to Section 16 of the Exchange Act with respect to the Company, who failed to file a required form or failed to file their forms on a timely basis.

The Company’s executive officers do not receive any direct compensation from the Company. The Company does not currently have any employees and does not expect to have any employees. Services necessary for the Company’s business are provided by individuals who are officers of CIM or by individuals who were contracted by CIM to work on the Company’s behalf pursuant to the terms of the investment advisory agreement or administration agreement. Each of the Company’s executive officers is an officer of CIM, and the day-to-day investment operations and administration of the Company’s portfolio are managed by CIM. In addition, the Company reimburses CIM, in its capacity as administrator to the Company, for the Company’s allocable portion of expenses incurred by CIM in performing its obligations under the administration agreement, including the allocable portion of the cost of the Company’s officers and their respective staffs determined under the administration agreement.

The investment advisory agreement and the administration agreement each provides that CIM and its officers, Directors, controlling persons and any other person or entity affiliated with them acting as the Company’s agent shall be entitled to indemnification (including reasonable attorneys’ fees and amounts reasonably paid in settlement) for any liability or loss suffered by CIM or such other person, and CIM and such other person shall be held harmless for any loss or liability suffered by the Company, if (i) CIM has determined, in good faith, that the course of conduct which caused the loss or liability was in the Company’s best interests, (ii) CIM or such other person was acting on behalf of or performing services for the Company, (iii) the liability or loss suffered was not the result of willful malfeasance, bad faith or gross negligence by CIM or an affiliate thereof acting as the Company’s agent, and (iv) the indemnification or agreement to hold CIM or such other person harmless is only recoverable out of the Company’s net assets and not from its shareholders.

The Company has procedures in place for the review, approval and monitoring of transactions involving the Company and certain persons related to it. For example, the Company has a code of business conduct that generally prohibits any employee, officer or Director from engaging in any transaction where there is a conflict between such individual’s personal interest and the Company’s interests. Waivers to the code of business conduct can generally only be obtained from the Chief Compliance Officer, the Co-Chairmen of the Board or the Chairman of the Audit Committee of the Board and are publicly disclosed as required by applicable law and regulations. In addition, the audit committee reviews all related person transactions for potential conflict of interest situations on an ongoing basis in accordance with the Company’s code of ethics, code of business conduct and other applicable policies and procedures, and all such transactions are approved or ratified by the audit committee as set forth in the audit committee charter.

Messrs. Gatto and Reisner, the Company’s Co-Chairmen and Co-Chief Executive Officers, also serve as Co-Chief Executive Officers of CIM. In addition, Messrs. Gatto and Reisner each directly and indirectly own approximately 38% of CIG’s ownership of CIM.

The Company has entered into an investment advisory agreement with CIM. Pursuant to the investment advisory agreement, the Company pays CIM a base management fee and an incentive fee. For the year ended December 31, 2025, CIM earned a base management fee of approximately $26 million and an incentive fee of approximately $20 million.

The Company has also entered into an administration agreement with CIM pursuant to which the Company reimburses CIM for administrative expenses it incurs on the Company’s behalf. For the year ended December 31, 2025, the Company reimbursed CIM approximately $5 million for administrative services.

On January 1, 2019, the Company entered into a servicing agreement with CIM’s affiliate, Apollo Investment Administration, L.P., or AIA, pursuant to which AIA furnished the Company with administrative services including, but not limited to, loan and high yield trading services, trade and settlement support, and supplementary investment valuation information. AIA was reimbursed for administrative expenses it incurred on the Company’s behalf in performing its obligations, provided that such reimbursement was reasonable, and costs and expenses incurred were documented. The servicing agreement may be terminated at any time, without the payment of any penalty, by either party, upon 60 days’ written notice to the other party.

The Company’s executive officers, certain of its Directors and certain other finance professionals of CION Investments also serve as executives of CIM and officers of the Company and Messrs. Gatto and Reisner are Directors of CION Securities, LLC, the dealer manager for the offering of the Company’s Shares, which ended on January 25, 2019. In addition, the Company’s executive officers and Directors and the members of CIM and members of the investment committee serve or may serve as officers, directors or principals of entities that operate in the same, or related, line of business as the Company does or of investment funds, accounts or other investment vehicles managed by the Company’s affiliates. These investment funds, accounts or other investment vehicles may have investment objectives similar to the Company’s investment objective. The Company may compete with entities managed by CIM and its affiliates for capital and investment opportunities. As a result, the Company may not be given the opportunity to participate in certain investments made by investment funds, accounts or other investment vehicles managed by CIM or its affiliates or by members of the investment committee. However, to fulfill its fiduciary duties to each of its clients, CIM intends to allocate investment opportunities in a manner that is fair and equitable over time and is consistent with CIM’s allocation policy, investment objective and strategies so that the Company is not disadvantaged in relation to any other client. CIM has agreed with the Board that allocations among the Company and other investment funds affiliated with CIM will be made based on capital available for investment in the asset class being allocated. The Company expects that its available capital for investments will be determined based on the amount of cash on-hand, existing commitments and reserves, if any, and the targeted leverage level and targeted asset mix and other investment policies and restrictions set by the Board or as imposed by applicable laws, rules, regulations or interpretations.

CIM and its affiliates have both subjective and objective procedures and policies in place designed to manage the potential conflicts of interest between CIM’s fiduciary obligations to the Company and its similar fiduciary obligations to other clients. For example, such policies and procedures may be designed so that, when appropriate, certain investment opportunities may be allocated on an alternating basis that is fair and equitable among the Company and their other clients. An investment opportunity that is suitable for multiple clients of CIM and its affiliates may not be capable of being shared among some or all of such clients and affiliates due to the limited scale of the opportunity or other factors, including regulatory restrictions imposed by the 1940 Act. There can be no assurance that CIM’s or its affiliates’ efforts to allocate any particular investment opportunity fairly among all clients for whom such opportunity is appropriate will result in an allocation of all or part of such opportunity to the Company. Not all conflicts of interest can be expected to be resolved in the Company’s favor.

The principals of CIM have managed and will continue to manage investment vehicles with similar or overlapping investment strategies. In order to address these issues, CIM has put in place an investment allocation policy that addresses the co-investment restrictions set forth under the 1940 Act and seeks to ensure the equitable allocation of investment opportunities when the Company is able to co-invest with other accounts managed by CIM and affiliated entities. When the Company engages in such permitted co-investments, the Company will do so in a manner consistent with its exemptive relief from the SEC and with CIM’s allocation policy. Under this allocation policy, a fixed percentage of each opportunity, which may vary based on asset class and from time to time, will be offered to the Company and similar eligible accounts, as periodically determined by CIM and approved by the Board, including all of the Independent Directors. The allocation policy further provides that allocations among the Company and other accounts will generally be made pro rata based on each account’s capital available for investment, as determined, in the

Company’s case, by the Board, including the Independent Directors. It is the Company’s policy to base its determinations as to the amount of capital available for investment on such factors as: the amount of cash on-hand, existing commitments and reserves, if any, the targeted leverage level, the targeted asset mix and other investment policies and restrictions set by the Board or imposed by applicable laws, rules, regulations or interpretations.

The Company expects that these determinations will be made similarly for other accounts. In situations where co-investment with other entities managed by CIM or its affiliates is not permitted or appropriate, such as when there is an opportunity to invest in different securities of the same issuer, CIM will need to decide whether the Company or such other entity or entities will proceed with the investment. CIM will make these determinations based on its policies and procedures, which generally require that such opportunities be offered to eligible accounts in a manner that will be fair and equitable over time.

On September 15, 2021, the Company’s Board, including the Independent Directors, approved a share repurchase policy authorizing the Company to repurchase up to $50 million of the Company’s outstanding Shares after the NYSE Listing. On June 24, 2022, the Company’s Board, including the Independent Directors, increased the amount of Shares that may be repurchased under the share repurchase policy by $10 million to up to an aggregate of $60 million. On August 5, 2025, the Company’s Board, including the Independent Directors, further increased the amount of shares of the Company’s common stock that may be repurchased under the share repurchase policy by $20 million to up to an aggregate of $80 million. Under the share repurchase policy, the Company may purchase Shares through various means such as open market transactions, including block purchases, and privately negotiated transactions. The number of Shares repurchased and the timing, manner, price and amount of any repurchases will be determined at the Company’s discretion. Factors include, but are not limited to, share price, trading volume and general market conditions, along with the Company’s general business conditions. The policy may be suspended or discontinued at any time and does not obligate the Company to acquire any specific number of Shares.

On August 15, 2025, as part of the share repurchase policy, the Company entered into a new trading plan with an independent broker, Wells Fargo Securities, LLC, or Wells Fargo, in accordance with Rule 10b5-1 of the Exchange Act based in part on historical trading data with respect to the Company’s Shares. The 10b5-1 trading plan permits common stock to be repurchased at a time that the Company might otherwise be precluded from doing so under insider trading laws or self-imposed trading restrictions. The 10b5-1 trading plan expires on August 15, 2026 and is subject to price, market volume and timing restrictions.

During the year ended December 31, 2025, the Company repurchased an aggregate of 1,771,403 Shares under the 10b5-1 trading plan for an aggregate purchase price of approximately $17,190,000, or an average purchase price of $9.70 per Share. As of December 31, 2025, the Company may repurchase a total of approximately $24,611,000 of the Company’s Shares under the share repurchase policy.

Certain officers of CIM are simultaneously providing investment management services to certain funds managed by its affiliates. CIM may determine that it is appropriate for the Company and one or more other investment accounts managed by CIM or any of its affiliates to participate in an investment opportunity. As a BDC, the Company is subject to certain regulatory restrictions in negotiating or investing in certain investments with entities with which the Company may be prohibited from doing so under the 1940 Act, such as CIM and its affiliates, unless the Company obtains an exemptive order from the SEC or co-invest alongside such affiliates in accordance with existing regulatory guidance. On August 30, 2022, the Company, CIM and certain of the Company’s affiliates were granted an order for exemptive relief (the “Order”) by the SEC that permits the Company to co-invest with other funds managed by CIM or certain affiliates in a manner consistent with the Company’s investment objectives, positions, policies, strategies and restrictions as well as regulatory requirements and other pertinent factors. Even though the Company was granted the Order by the SEC, CIM’s investment committee may determine that the Company should not participate in a co-investment transaction.

As a BDC, the Company is subject to certain regulatory restrictions in negotiating or investing in certain investments with entities with which the Company may be prohibited from doing so under the 1940 Act, such as CIM and its affiliates, unless the Company obtains an exemptive order from the SEC, such as the Order, which was issued by the SEC on August 30, 2022.

Pursuant to such Order, the Company generally is permitted to co-invest with certain of its affiliates if a “required majority” (as defined in Section 57(o) of the 1940 Act) of the Independent Directors make certain conclusions in connection with a co-investment transaction, including that (1) the terms of the proposed transaction, including the consideration to be paid, are reasonable and fair to the Company and its shareholders and do not involve overreaching of the Company or its shareholders on the part of any person concerned, (2) the transaction is consistent with the interests of the Company’s shareholders and is consistent with the Company’s investment objective and strategies, (3) the investment by the Company’s affiliates would not disadvantage the Company, and the Company’s participation would not be on a basis different from or less advantageous than that on which its affiliates are investing, and (4) the proposed investment by the Company would not benefit CIM or its affiliates or any affiliated person of any of them (other than the parties to the transaction), except to the extent permitted by the Order and applicable law, including the limitations set forth in Section 57(k) of the 1940 Act. In addition, the Order permits the Company to co-invest in its existing portfolio companies with certain affiliates that are private funds, even if such private funds did not have an investment in such existing portfolio company. Even though the Company was granted the Order by the SEC, CIM’s investment committee may determine that the Company should not participate in a co-investment transaction.

The Company’s senior management, members of CIM’s investment committee and other investment professionals from CIM may serve as directors of, or in a similar capacity with, companies in which the Company invests or in which the Company is considering making an investment. Through these and other relationships with a company, these individuals may obtain material non-public information that might restrict the Company’s ability to buy or sell the securities of such company under the policies of the Company or applicable law.

Each Director shall be elected by a plurality of all the votes cast at the Meeting virtually or by proxy, provided that a quorum is present. Each Share may be voted for each of the Director nominees. In the absence of instructions to the contrary, it is the intention of the persons named as proxies to vote such proxy “FOR” the election of the Director nominees named above. Votes that are withheld will have no effect on the outcome of the vote on this proposal. Shares represented by broker non-votes are also not considered votes cast and thus have no effect on this proposal.

The audit committee, comprised of all the Independent Directors, has approved (and the Board has ratified) RSM US LLP, or RSM, to serve as the independent registered public accounting firm for the Company for the fiscal year ending December 31, 2026. RSM has advised the Company that neither the firm nor any present member or associate of it has any material financial interest, direct or indirect, in the Company or its affiliates. It is expected that a representative of RSM will be present at the Meeting and will have an opportunity to make a statement if he or she chooses and will be available to answer questions.

RSM has acted as the Company’s independent registered public accounting firm for the fiscal years ended December 31, 2019 through December 31, 2025. Set forth in the table below are audit fees and non-audit related fees billed to the Company by RSM for professional services performed for the Company’s fiscal years ended December 31, 2025 and 2024.

The Company’s audit committee reviews, negotiates and approves in advance the scope of work, any related engagement letter and the fees to be charged by the independent registered public accounting firm for audit services and permitted non-audit services for the Company. All of the audit and non-audit services described above for which RSM billed the Company for the fiscal years ended December 31, 2025 and 2024 were pre-approved by the audit committee.

As part of its oversight of the consolidated financial statements of CĪON Investment Corporation, or the Company, the Audit Committee reviewed and discussed with both management and RSM US LLP, the Company’s independent registered public accounting firm, the Company’s consolidated financial statements to be filed with the SEC for the fiscal year ended December 31, 2025. Management advised the Audit Committee that all financial statements were prepared in accordance with U.S. generally accepted accounting principles, or GAAP, and reviewed significant accounting issues with the Audit Committee. The Audit Committee also discussed with RSM US LLP 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, and by the Auditing Standards Board of the American Institute of Certified Public Accountants.

The Audit Committee has established a pre-approval policy that describes the permitted audit, audit-related, tax, and other services to be provided by RSM US LLP. Pursuant to the policy, the Audit Committee pre-approves the audit and non-audit services performed by RSM US LLP in order to assure that the provision of such service does not impair such firm’s independence.

Any requests for audit, audit-related, tax, and other services that have not received general pre-approval must be submitted to the Audit Committee for specific pre-approval in accordance with its pre-approval policy, irrespective of the amount, and cannot commence until such approval has been granted. Normally, pre-approval is provided at regularly scheduled meetings of the Audit Committee. However, the Audit Committee may delegate pre-approval

authority to one or more of its members. The member or members to whom such authority is delegated must report any pre-approval decisions to the Audit Committee at its next scheduled meeting. The Audit Committee does not delegate its responsibilities to pre-approve services performed by RSM US LLP to management.

The Audit Committee received and reviewed the written disclosures and the letters from RSM US LLP required by the applicable requirements of the Public Company Accounting Oversight Board regarding RSM US LLP’s communications with the Audit Committee concerning independence and has discussed with RSM US LLP its independence. The Audit Committee has reviewed the audit fees paid by the Company to RSM US LLP. It has also reviewed non-audit services and fees to assure compliance with the Company’s and the Audit Committee’s policies restricting RSM US LLP from performing services that might impair its independence.

Based on the reviews and discussions referred to above, the Audit Committee recommended to the Board that the audited consolidated financial statements of the Company as of and for the years ended December 31, 2025, 2024 and 2023 be included in the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2025 for filing with the SEC.

The affirmative vote of a majority of the votes cast at the Annual Meeting in person or by proxy, provided a quorum is present, is required to ratify the appointment of RSM to serve as the Company’s independent registered public accounting firm. Abstentions will not be included in determining the number of votes cast and, as a result, will have no effect on the result of the vote. Because brokers will have discretionary authority to vote for the ratification of the appointment of the Company’s independent registered public accounting firm in the event that they do not receive voting instructions from the beneficial owner of the Shares, there will not be any broker non-votes with respect to this proposal.

Proposals that a shareholder intends to present at the Company’s 2027 annual meeting of shareholders, which we refer to as the “2027 Annual Meeting,” and wishes to be considered for inclusion in the Company’s proxy statement and form of proxy for the 2027 Annual Meeting must be received no later than 3:00 p.m., Eastern Time, on December 31, 2026. All proposals must comply with SEC Rule 14a-8 under the Exchange Act, which lists the requirements for the inclusion of shareholder proposals in company-sponsored proxy materials. Shareholder proposals must be delivered to the Company’s Secretary by mail at the address provided below. As the rules of the SEC make clear, simply submitting a timely proposal does not guarantee that the proposal will be included in the Company’s proxy statement and form of proxy for the 2027 Annual Meeting.

Pursuant to the provisions of the Company’s Bylaws, which we refer to as the “Bylaws,” notice of any proposal that a shareholder intends to present at the 2027 Annual Meeting, but does not intend to have included in the Company’s proxy statement and form of proxy for the 2027 Annual Meeting, as well as any Director nominations, must be delivered to the Company’s Secretary by mail at the address provided below and must be received by the Company’s Secretary at the address provided below not less than 90 days nor more than 120 days prior to the first anniversary of the date of the mailing of the Notice of Annual Meeting for the 2026 Annual Meeting of Shareholders. Accordingly, any notice given by a shareholder must be received no earlier than 3:00 p.m., Eastern Time, on December 31, 2026, and not later than the close of business on January 29, 2027. To be in proper form, the notice must be submitted by a shareholder of record and must include the information required by the current Bylaws with respect to each Director nomination or proposal that the shareholder intends to present at the 2027 Annual Meeting. If you are a beneficial owner of Shares held by a broker or other custodian, you should contact the broker or other custodian that holds your Shares for information about how to register your Shares directly in your name as a shareholder of record.

Notices of intention to present proposals at the 2027 Annual Meeting and/or Director nominations must be addressed to Stephen Roman, Corporate Secretary, CĪON Investment Corporation, 100 Park Avenue, 25^th Floor, New York, NY 10017, on or before January 29, 2027. The Company will not consider any proposal or nomination that is not timely. The Company reserves the right to reject, rule out of order, or take other appropriate action with respect to any proposal that does not comply with or otherwise does not meet the Bylaws or SEC requirements for submitting a proposal or nomination, or other applicable requirements. A shareholder who wishes to submit a proposal or nomination is encouraged to seek independent counsel about the Bylaws and SEC requirements.

The Board does not intend to present any other business at the Meeting, nor is it aware that any shareholder intends to do so. If, however, any other matters are properly brought before the Meeting, the persons named in the proxy will vote thereon in accordance with their judgment.

All interested parties, including shareholders, may send communications to the Board or any of its members by addressing such communication to the relevant party(ies), c/o CĪON Investment Corporation, 100 Park Avenue, 25^th Floor, New York, NY 10017.

Adviser. CION Investment Management, LLC, a registered investment adviser under the Investment Advisers Act of 1940, as amended, located at 100 Park Avenue, 25^th Floor, New York, NY 10017, serves as the Company’s investment adviser.

Administrator. CION Investment Management, LLC, located at 100 Park Avenue, 25^th Floor, New York, NY 10017, also serves as the Company’s administrator and furnishes the Company with office equipment and clerical, bookkeeping and record keeping services.

Custodian. U.S. Bank, N.A., which has its principal office at One Federal Street, Boston, MA 02110, serves as custodian for the Company. U.S. Bank, N.A. also performs certain administrative functions on behalf of the Company.

Distribution Paying Agent, Transfer Agent and Registrar. SS&C Technologies, Inc., which has its principal office at 333 West 11^th Street, 5th Floor, Kansas City, MO 64105, serves as the Company’s distribution paying agent, transfer agent and registrar.

The undersigned hereby appoints Michael A. Reisner and Stephen Roman, and each of them, or their designated substitutes, to act as attorney and proxy for the undersigned to vote all the Shares of Common Stock of CĪON Investment Corporation (the “Company”), which the undersigned is entitled to vote and to otherwise represent the undersigned at the Annual Meeting of Shareholders of the Company (the “Meeting”) to be held virtually via live webcast over the Internet at www.virtualshareholdermeeting.com/CION2026, on June 25, 2026 at 3:00 p.m. Eastern Time, and at all adjournments thereof, as indicated on this proxy. The undersigned hereby acknowledges receipt of the Notice of Annual Meeting of Shareholders and of the accompanying Proxy Statement, the terms of each of which are incorporated by reference, and revokes any proxy heretofore given with respect to such Meeting.

This proxy, when properly executed, will be voted in the manner directed herein. If no direction is made, this proxy will be voted in accordance with the Board of Directors’ recommendations. The votes entitled to be cast by the undersigned will be cast in the discretion of the proxy holder on any other matter that may properly come before the Meeting or any postponements or adjournments thereof.