SCLXW Scilex Holding Company

PRELIMINARY COPY DATED FEBRUARY 26, 2025 — SUBJECT TO COMPLETION

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 14A INFORMATION

Proxy Statement Pursuant to Section 14(a) of the

Securities Exchange Act of 1934

(Amendment No. 1)

Filed by the Registrant ☒

Filed by a Party other than the Registrant ☐

Check the appropriate box:

SCILEX HOLDING COMPANY

(Name of Registrant as Specified in Its Charter)

N/A

(Name of Person(s) Filing Proxy Statement, if other than the Registrant)

Payment of Filing Fee (Check all boxes that apply):

Explanatory Note

This Amendment No. 1 to Schedule 14A is being filed to revise the ratio of the reverse stock split contained in Proposal 1 of the Company’s Preliminary Proxy Statement on Schedule 14A that was filed on February 14, 2025 (the “Original Preliminary Proxy”). No other changes were made to the Original Preliminary Proxy.

PRELIMINARY COPY DATED FEBRUARY 26, 2025 — SUBJECT TO COMPLETION

SCILEX HOLDING COMPANY

960 San Antonio Road

Palo Alto, CA 94303

NOTICE OF SPECIAL MEETING OF STOCKHOLDERS

To Be Held at 9:00 a.m. Pacific Time on Wednesday, March 19, 2025

Dear Stockholders of Scilex Holding Company:

We cordially invite you to attend a special meeting of stockholders (the “Special Meeting”) of Scilex Holding Company, a Delaware corporation (the “Company”, “Scilex”, “we”, “us” or “our”), which will be held virtually on Wednesday, March 19, 2025 at 9:00 a.m. Pacific Time via live audio webcast on the Internet at www.virtualshareholdermeeting.com/SCLX2025SM for the following purposes, as more fully described in the accompanying proxy statement for the Special Meeting (the “Proxy Statement”):

In order to provide expanded access to our stockholders, the Board has determined to hold a live audio webcast in lieu of an in-person meeting. You will be able to vote and submit your questions during the meeting at www.virtualshareholdermeeting.com/SCLX2025SM. The virtual-only approach also lowers costs and aligns with our broader sustainability goals. Although no physical in-person meeting will be held, we designed the format of the Special Meeting to ensure that our stockholders of record who attend the Special Meeting will be afforded similar rights and opportunities to participate as they would at an in-person meeting. As always, we encourage you to vote your shares prior to the Special Meeting either by Internet or by proxy card to help make this meeting format as efficient as possible.

The Board has fixed the close of business on February 24, 2025 as the record date for the Special Meeting. Only stockholders of record on February 24, 2025 are entitled to notice of and to vote at the Special Meeting. Further information regarding voting rights and the matters to be voted upon is presented in the Proxy Statement.

We intend to mail the Proxy Statement and the accompanying proxy card on or about     , 2025 to all stockholders of record entitled to vote at the Special Meeting.

YOUR VOTE IS IMPORTANT. Whether or not you plan to attend the Special Meeting, we urge you to submit your vote via the Internet or mail as soon as possible to ensure that your shares are represented. For additional instructions on voting by the Internet, please refer to your proxy card. Returning the proxy does not deprive you of your right to attend the Special Meeting and to vote your shares at the Special Meeting. Please note, however, that if your shares are held of record by a broker, bank or other nominee and you wish to vote at the Special Meeting, you must obtain a proxy issued in your name from that record holder.

We appreciate your continued support of Scilex.

By order of the Board of Directors,

Jaisim Shah

Chief Executive Officer, President and Director

Palo Alto, CA

    , 2025

TABLE OF CONTENTS

SCILEX HOLDING COMPANY

PROXY STATEMENT

FOR

SPECIAL MEETING OF STOCKHOLDERS

PROCEDURAL MATTERS

This proxy statement (this “Proxy Statement”) and the enclosed form of proxy are furnished in connection with the solicitation of proxies by our board of directors (our “Board”) for use at the Special Meeting of Stockholders (the “Special Meeting”) of Scilex Holding Company, a Delaware corporation (the “Company”, “Scilex”, “we”, “us” or “our”), and any postponements, adjournments or continuations thereof. The Special Meeting will be held virtually on Wednesday, March 19, 2025 at 9:00 a.m. Pacific Time via live audio webcast. This Proxy Statement and the accompanying proxy card are first being mailed on or about     , 2025 to all stockholders of record entitled to vote at the Special Meeting.

The information provided in the “question and answer” format below is for your convenience only and is merely a summary of the information contained in this Proxy Statement. You should read this entire Proxy Statement carefully. Information contained on, or that can be accessed through, our website is not intended to be incorporated by reference into this Proxy Statement, and references to our website address in this Proxy Statement are inactive textual references only.

What matters am I voting on?

You will be voting on:

Why is the Company seeking approval for the Reverse Stock Split Proposal?

On November 1, 2024, we received a notice from The Nasdaq Stock Market LLC (“Nasdaq”) indicating that, for the last 30 consecutive business days, the bid price for the Common Stock had closed below the minimum $1.00 per share requirement for continued listing on the Nasdaq Capital Market under Nasdaq Listing Rule 5550(a)(2). In accordance with Nasdaq Listing Rule 5810(c)(3)(A), we have been provided an initial period of 180 calendar days, or until April 30, 2025, to regain compliance with the minimum bid price requirement.

As of the date hereof, we have not regained compliance with the minimum bid price requirement since the closing bid price of the Common Stock has not been at least $1.00 per share for a minimum of 10 consecutive business days. To cure the deficiency, we may conduct the reverse stock split of the Common Stock for which we are seeking stockholder approval in this Proxy Statement. On February  , 2025, the closing price of our Common Stock as reported on the Nasdaq Capital Market was $     per share.

Our Board has approved the reverse stock split as a potential means of increasing the share price of the Common Stock and may choose to implement it if other options are unavailable, undesirable, or insufficient. Our Board

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believes that maintaining our listing on the Nasdaq Capital Market provides a broader market for the Common Stock and facilitates the use of the Common Stock in financing and other transactions. We expect the reverse stock split, if effected, to facilitate the continuation of such listing. We cannot assure you, however, that the reverse stock split, if effected, will result in an increase in the per share price of the Common Stock, or if it does, how long the increase would be sustained, if at all, or whether the increase will be proportional to the reverse stock split ratio.

If our stockholders approve the Reverse Stock Split Proposal, our Board in its sole discretion will determine whether to effect the reverse stock split. Our Board reserves the right to elect not to effect a reverse stock split, including any or all reverse stock split ratios within the proposed range, if it determines, in its sole discretion, that implementing a reverse stock split is not in the best interest of the Company and its stockholders. For more information, see “Proposal No. 1 — Reverse Stock Split Proposal” contained elsewhere in this Proxy Statement.

How does the Board recommend I vote on these proposals?

Our Board recommends a vote:

What if another matter is properly brought before the Special Meeting?

Our Board knows of no other matters that will be presented for consideration at the Special Meeting. If any other matters are properly brought before the Special Meeting, it is the intention of the persons named in the accompanying proxy to vote on those matters in accordance with their best judgment.

Who is entitled to vote?

Holders of our Common Stock and holders of Series A preferred stock, par value $0.0001 per share, of the Company (“Series A Preferred Stock”), as of the close of business on February 24, 2025, the record date for the Special Meeting (the “Record Date”), may vote at the Special Meeting. The holders of Series A Preferred Stock are entitled to vote, together with the holders of Common Stock and not separately as a class, on an as converted to Common Stock basis, on all matters on which the holders of shares of Common Stock have the right to vote. As of the Record Date, there were 243,312,885 shares of our Common Stock and 29,057,097 shares of Series A Preferred Stock outstanding. Each share of Common Stock is entitled to one vote on each proposal. The 29,057,097 shares of Series A Preferred Stock outstanding are entitled to a number of votes as determined by dividing the stated value (as determined under our Certificate of Designations of Series A Preferred Stock, filed with the Delaware Secretary of State on November 10, 2022 (the “Certificate of Designations”)) by $10.00 and, as of the Record Date, such preferred stock is entitled to an aggregate of 32,596,371 votes as a result of adjustments to the deemed conversion price of such preferred stock in accordance with the terms of the Certificate of Designations. The shares of Common Stock and Series A Preferred Stock are the only shares of capital stock of the Company presently outstanding and entitled to vote at the Special Meeting.

Registered Stockholders. If shares of our Common Stock and/or Series A Preferred Stock are registered directly in your name with our transfer agent, you are considered the stockholder of record with respect to those shares, and these proxy materials have been provided to you directly by us. As the stockholder of record, you have the right to grant your voting proxy directly to the individuals listed on the proxy card, vote live at the Special Meeting, or vote by proxy via the Internet. Throughout this Proxy Statement, we refer to these registered stockholders as “stockholders of record.”

Street Name Stockholders. If shares of our Common Stock are held on your behalf in a brokerage account or by a bank or other nominee, you are considered to be the beneficial owner of shares that are held in “street name,” and these proxy materials have been forwarded to you by your broker or nominee, who is considered the stockholder

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of record with respect to those shares. As the beneficial owner, you have the right to direct your broker, bank or other nominee as to how to vote your shares. Beneficial owners are also invited to attend the Special Meeting. However, since a beneficial owner is not the stockholder of record, you should follow your broker’s procedures for obtaining a legal proxy to vote your shares of our Common Stock live at the Special Meeting. If you request a printed copy of our proxy materials by mail, your broker, bank or other nominee will provide a voting instruction form for you to use. Throughout this Proxy Statement, we refer to stockholders who hold their shares through a broker, bank or other nominee as “street name stockholders.”

How many votes are needed for approval of each proposal?

What are the effects of abstentions, withheld votes and broker non-votes?

An abstention represents a stockholder’s affirmative choice to decline to vote on a proposal. If a stockholder indicates on its proxy card that it wishes to abstain from voting its shares or withholds votes as to a particular proposal, or if a broker, bank or other nominee holding its customer’s shares of record causes abstentions or withheld votes to be recorded for shares, these shares will be considered present and entitled to vote at the Special Meeting. As a result, abstentions and withheld votes will be counted for purposes of determining the presence or absence of a quorum and will count as votes against Proposal No. 2; however, since abstentions and withheld votes are not counted as shares cast, they will have no impact on the outcome of Proposal No. 1.

A broker non-vote occurs when a broker, bank or other nominee holding shares for a beneficial owner does not vote on a particular proposal because the broker, bank or other nominee does not have discretionary voting power with respect to such proposal and has not received voting instructions from the beneficial owner of the shares. Broker non-votes will be counted for purposes of calculating whether a quorum is present at the Special Meeting but will not be counted for purposes of determining the number of votes present and entitled to vote or votes cast. Therefore, a broker non-vote will make a quorum more readily attainable but will not otherwise affect the outcome of the vote on any proposal.

As a reminder, if you are a beneficial owner of shares held in street name, in order to ensure your shares are voted in the way you would prefer, you must provide voting instructions to your broker, bank or other nominee by the deadline provided in the materials you receive from your broker, bank or other nominee.

What is a quorum?

A quorum is the minimum number of shares required to be present at the Special Meeting to properly hold a special meeting of stockholders and conduct business under our Bylaws and Delaware law. The presence by remote communication or by proxy, duly authorized, of the holders of record of a majority of the voting power of the issued and outstanding shares of our Common Stock and Series A Preferred Stock entitled to vote at the Special Meeting will constitute a quorum at the Special Meeting. On the Record Date, there were 243,312,885 shares of Common Stock and 29,057,097 shares of Series A Preferred Stock outstanding and entitled to vote.

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Each share of Common Stock is entitled to one vote on each proposal. The 29,057,097 shares of Series A Preferred Stock outstanding are entitled to a number of votes on each proposal as determined by dividing the stated value (as determined under our Certificate of Designations) by $10.00 and, as of the Record Date, such preferred stock is entitled to an aggregate of 32,596,371 votes as a result of adjustments to the deemed conversion price of such preferred stock in accordance with the terms of the Certificate of Designations. Thus, the holders of shares of Common Stock and Series A Preferred Stock representing 137,954,629 votes (i.e., a majority of the voting power of the issued and outstanding shares of our Common Stock and Series A Preferred Stock entitled to vote at the Special Meeting) must be present by remote communication or represented by proxy at the Special Meeting to have a quorum. Abstentions, withheld votes and broker non-votes are counted as shares present and entitled to vote for purposes of determining a quorum.

How do I vote?

If you are a stockholder of record, there are three ways to vote:

If you plan to attend the Special Meeting, we recommend that you also vote by proxy so that your vote will be counted if you later decide not to attend the Special Meeting.

If you are a street name stockholder, you will receive voting instructions from your broker, bank or other nominee. You must follow the voting instructions provided by your broker, bank or other nominee in order to direct your broker, bank or other nominee, as applicable, on how to vote your shares. Street name stockholders should generally be able to vote by returning a voting instruction form or on the Internet. However, the availability of Internet voting will depend on the voting process of your broker, bank or other nominee. As discussed above, if you are a street name stockholder, you must obtain a legal proxy from your broker, bank or other nominee in order to vote your shares by remote communication in the Special Meeting.

Can I change my vote or revoke my proxy?

Yes, if you are a stockholder of record, you can change your vote or revoke your proxy any time before the Special Meeting by:

If you are a street name stockholder, your broker, bank or other nominee can provide you with instructions on how to change your vote.

Will my vote be kept confidential?

Yes, your vote will be kept confidential and not disclosed to the Company unless:

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Why isn’t the Special Meeting being held in-person?

In order to provide expanded access to our stockholders, our Board has determined to hold a live audio webcast in lieu of an in-person meeting. The virtual-only approach also lowers costs and aligns with our broader sustainability goals. Although no physical in-person meeting will be held, we designed the format of the Special Meeting to ensure that our stockholders of record who attend the Special Meeting will be afforded similar rights and opportunities to participate as they would at an in-person meeting. You will be able to vote and submit your questions during the meeting at www.virtualshareholdermeeting.com/SCLX2025SM.

What do I need to do to attend the Special Meeting online?

We will be hosting the Special Meeting via live audio webcast only. If you are a stockholder as of the Record Date and wish to virtually attend the Special Meeting, you will need the 16-digit control number, which is located on your proxy card (if you receive a printed copy of the proxy materials). Instructions on how to participate in the Special Meeting are also posted online at www.virtualshareholdermeeting.com/SCLX2025SM. The webcast will start at 9:00 a.m. Pacific Time on March 19, 2025. Stockholders may vote and ask questions while attending the Special Meeting online.

Use of cameras and recording devices are prohibited while virtually attending the live audio webcast.

How can I get help if I have trouble checking in or listening to the Special Meeting online?

If you encounter any difficulties accessing the Special Meeting during the check-in or the Special Meeting, please call the technical support number that will be posted on the Virtual Shareholder Meeting log-in page.

What is the effect of giving a proxy?

Proxies are solicited by and on behalf of our Board. Jaisim Shah and Henry Ji, Ph.D., have been designated as proxy holders by our Board. When proxies are properly dated, executed and returned, the shares represented by such proxies will be voted at the Special Meeting in accordance with the instructions of the stockholder. If no specific instructions are given, however, the shares will be voted in accordance with the recommendations of our Board as described above. If any matters not described in this Proxy Statement are properly presented at the Special Meeting, the proxy holders will use their own judgment to determine how to vote the shares. If the Special Meeting is adjourned, the proxy holders can vote the shares on the new Special Meeting date as well, unless you have properly revoked your proxy instructions, as described above.

How are proxies solicited for the Special Meeting?

Our Board is soliciting proxies for use at the Special Meeting. In addition to these proxy materials, our directors and employees may also solicit proxies in person, by telephone or by other means of communication. Our directors and employees will not be paid any additional compensation for soliciting proxies.

Who is paying for this proxy solicitation?

We will pay for the entire cost of soliciting proxies. Proxies may be solicited on our behalf by our directors, officers or employees in person or by telephone, mail, electronic transmission and/or facsimile transmission. We may also reimburse brokerage firms, banks and other nominees for the cost of forwarding proxy materials to beneficial owners.

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What does it mean if I receive more than one proxy card?

If you receive more than one proxy card, your shares may be registered in more than one name or in different accounts. Please follow the voting instructions on each of the proxy cards you receive to ensure that all of your shares are voted.

How may my brokerage firm or other intermediary vote my shares if I fail to provide timely directions?

Brokerage firms and other intermediaries holding shares of our Common Stock in street name for their customers are generally required to vote such shares in the manner directed by their customers. Each of the Reverse Stock Split Proposal and the Adjournment Proposal are considered “routine” matters under applicable stock exchange rules. Accordingly, in the absence of timely directions from you, your broker will have discretion to vote your shares on each of the proposals. Your broker will not have discretion to vote on any proposals that are considered “non-routine” matters, absent direction from you.

Where can I find the voting results of the Special Meeting?

We expect to announce preliminary voting results at the Special Meeting. We will also disclose voting results on a Current Report on Form 8-K that we will file with the U.S. Securities and Exchange Commission (the “SEC”) within four business days after the Special Meeting. If final voting results are not available to us in time to file a Current Report on Form 8-K within four business days after the Special Meeting, we will file a Current Report on Form 8-K to publish preliminary results and will provide the final results in an amendment to the Current Report on Form 8-K as soon as they become available.

I share an address with another stockholder, and we received only one paper copy of the proxy materials. How may I obtain an additional copy of the proxy materials?

We have adopted a procedure called “householding,” which the SEC has approved. Under this procedure, we deliver a single copy of our proxy materials to multiple stockholders who share the same address, unless we have received contrary instructions from one or more of such stockholders. This procedure reduces our printing costs, mailing costs and fees. Stockholders who participate in householding will continue to be able to access and receive separate proxy cards. Upon written or oral request, we will deliver promptly a separate copy of our proxy materials to any stockholder at a shared address to which we delivered a single copy of any of these materials. To receive a separate copy, or, if a stockholder is receiving multiple copies, to request that we only send a single copy of our proxy materials, such stockholder may contact us at:

Scilex Holding Company

Attention: Investor Relations

960 San Antonio Road

Palo Alto, CA 94303

investorrelations@scilexholding.com

(650) 516-4310

We encourage stockholders to contact us by telephone or e-mail instead of physical mail to help ensure timely receipt of any request for proxy materials.

Street name stockholders may contact their broker, bank or other nominee to request information about householding.

What is the deadline to propose actions for consideration at the next annual meeting of stockholders or to nominate individuals to serve as directors?

Stockholder Proposals

Stockholders may present proper proposals for inclusion in our proxy statement and for consideration at our next annual meeting of stockholders by submitting their proposals in writing to our Corporate Secretary in a timely

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manner. For a stockholder proposal to be considered for inclusion in our proxy statement for the 2025 annual meeting of stockholders (the “2025 Annual Meeting”), our Corporate Secretary must have received the written proposal at our principal executive offices not later than the close of business on November 12, 2024. Stockholder proposals must comply with the requirements of Rule 14a-8 under the Securities Exchange Act of 1934, as amended (the “Exchange Act”), regarding the inclusion of stockholder proposals in company-sponsored proxy materials. Stockholder proposals should be addressed to:

Scilex Holding Company

Attention: Corporate Secretary

960 San Antonio Road

Palo Alto, CA 94303

Our Bylaws also establish an advance notice procedure for stockholders who wish to present a proposal before an annual meeting of stockholders but do not intend for the proposal to be included in our proxy statement. Our Bylaws provide that the only business that may be conducted at an annual meeting of stockholders is business that is (i) specified in our notice of such annual meeting given by or at the direction of our Board, (ii) otherwise properly brought before such annual meeting by or at the direction of our Board or (iii) otherwise properly brought before such meeting by a stockholder of record at the time of such stockholder’s timely delivery of written notice to our Corporate Secretary, which notice must contain the information specified in our Bylaws, who is entitled to vote at such annual meeting and has complied with the notice procedures set forth in our Bylaws. To be timely for the 2025 Annual Meeting, our Corporate Secretary must have received the written notice at our principal executive offices:

In the event that we hold the 2025 Annual Meeting more than 30 days before or more than 60 days after the one-year anniversary of the 2024 annual meeting of stockholders, which was held on April 5, 2024, then, for notice by the stockholder to be timely, it must be received by the Corporate Secretary not earlier than the close of business on the 120th day prior to such annual meeting and not later than the close of business on the later of the 90th day prior to such annual meeting or the tenth day following the day on which public announcement of the date of such annual meeting is first made.

In addition, pursuant to Rule 14a-19 of the Exchange Act (“Rule 14a-19”), notices of a solicitation of proxies in support of director nominees other than our own nominees must have been postmarked or electronically submitted no later than February 4, 2025, and each nomination must comply with the SEC regulations under Rule 14a-19, which require, among other things, that such notice include a statement that such person intends to solicit the holders of shares representing at least 67% of the voting power of shares entitled to vote on the election of directors. If, however, the date of the 2025 Annual Meeting is more than 30 days before or after April 5, 2025, then the Rule 14a-19 deadline shall be the later of 60 calendar days prior to the date of the 2025 Annual Meeting or the 10th calendar day following the day on which we first make a public announcement of the date of our 2025 Annual Meeting.

If a stockholder who has notified us of the stockholder’s intention to present a proposal at an annual meeting of stockholders does not appear to present the stockholder’s proposal at such annual meeting, we are not required to present the proposal for a vote at such annual meeting.

Nomination of Director Candidates

Stockholders may propose director candidates for consideration by our Nominating and Corporate Governance Committee. Any such recommendations should include the nominee’s name and qualifications for membership on our Board and should be directed to our Corporate Secretary at the address of our principal executive office

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set forth above. For additional information regarding stockholder recommendations for director candidates, see the section included in our definitive proxy statement filed with the SEC on March 12, 2024 titled “Board of Directors and Corporate Governance — Stockholder Recommendations and Nominations to the Board of Directors.”

Our Bylaws also permit stockholders to nominate directors for election at an annual meeting of stockholders. To nominate a director, the stockholder must provide the information required by our Bylaws. In addition, the stockholder must give timely notice to our Corporate Secretary in accordance with our Bylaws, which, in general, require that the notice be received by our Corporate Secretary within the time periods described above under the section titled “Stockholder Proposals” for stockholder proposals that are not intended to be included in a proxy statement.

Availability of Bylaws

A copy of our Bylaws is available via the SEC’s website at http://www.sec.gov. You may also contact our Corporate Secretary at the address set forth above for a copy of the relevant provisions of our Bylaws regarding the requirements for making stockholder proposals and nominating director candidates.

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PROPOSAL NO. 1

REVERSE STOCK SPLIT PROPOSAL

Background

The Board has approved and recommended the Reverse Stock Split Proposal to approve any amendment to the Company’s Restated Certificate of Incorporation to effect a reverse stock split of the Company’s Common Stock within a range of 1-for-14 to 1-for-50 (or any number in between), without reducing the authorized number of shares of the Common Stock, and the filing of a final amendment with the ratio within such range to be determined in the sole discretion of the Board at any time on or before March 19, 2026, without further approval or authorization of our stockholders. The Reverse Stock Split Proposal provides that the Board will have sole discretion to elect, at any time on or before March 19, 2026, as it determines to be in our best interest, whether or not to effect the Reverse Stock Split, and, if so, the number of shares of Common Stock, between and including 1-for-14 to 1-for-50, which will be combined into one share of Common Stock. The Board believes that the availability of alternative reverse stock split ratios will provide it with the flexibility to implement the Reverse Stock Split in a manner designed to maximize the anticipated benefits for us and our stockholders.

If the Board determines that effecting the Reverse Stock Split is in our best interest, the Reverse Stock Split will become effective upon the filing of an amendment to the Certificate of Incorporation with the Secretary of State of the State of Delaware (the “Delaware Secretary of State”). The amendment filed thereby will set forth the number of shares to be combined into one share of Common Stock within the limits set forth in this proposal. The potential amendments at the other approved ratios within the range will be abandoned by the Board.

If the Board elects to effect the Reverse Stock Split, following stockholder approval, for a Reverse Stock Split in the range of 1-for-14 to 1-for-50, the number of issued shares of Common Stock would be reduced in accordance with a reverse stock split ratio selected by the Board from among those set forth in this proposal. Except for adjustments that may result from the treatment of fractional shares as described below, each stockholder will hold the same percentage of outstanding Common Stock immediately following the Reverse Stock Split as such stockholder held immediately prior to the Reverse Stock Split. The par value of the Common Stock would remain unchanged at $0.0001 per share. The Reverse Stock Split would not change the number of authorized shares of Common Stock. There are currently no specific plans, arrangements, agreements or understandings for the issuance of the additional authorized but unissued and unreserved shares of Common Stock that would be created by the Reverse Stock Split.

The text of the proposed amendment to the Certificate of Incorporation to effect the Reverse Stock Split is included as Appendix A to this Proxy Statement. However, such text is subject to amendment to include such changes as may be required by the office of the Delaware Secretary of State or as the Board deems necessary and advisable to effect the Reverse Stock Split. If the Reverse Stock Split Proposal is approved by our stockholders, we will have the authority to file an amendment reflecting a ratio within the approved ranges with the Delaware Secretary of State, which will become effective upon its filing or the effective time set forth in the amendment. The Board has determined that the amendment is advisable and in the best interests of the Company and its stockholders and has submitted the amendment for consideration by our stockholders at the Special Meeting.

Reasons for the Reverse Stock Split

Although the proposed Reverse Stock Split will not have the effect of increasing the Company’s equity market capitalization, we believe that implementing the Reverse Stock Split could provide benefits to the Company and our existing stockholders in a number of ways, including:

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As of the date hereof, we have not regained compliance with the minimum bid price requirement since the closing bid price of the Common Stock has not been at least $1.00 per share for a minimum of 10 consecutive business days. To cure the deficiency, we may conduct the Reverse Stock Split for which we are seeking stockholder approval in this Proxy Statement. On February  , 2025, the closing price of the Common Stock as reported on the Nasdaq Capital Market was $     per share.

Our Board has approved the Reverse Stock Split as a potential means of increasing the share price of the Common Stock and may choose to implement it if other options are unavailable, undesirable, or insufficient. Our Board believes that maintaining our listing on the Nasdaq Capital Market provides a broader market for the Common Stock and facilitates the use of the Common Stock in financing and other transactions. We expect the Reverse Stock Split, if effected, to facilitate the continuation of such listing. We cannot assure you, however, that the Reverse Stock Split, if effected, will result in an increase in the per share price of the Common Stock, or if it does, how long the increase would be sustained, if at all, or whether the increase will be proportional to the reverse stock split ratio.

If our stockholders approve the Reverse Stock Split Proposal, our Board in its sole discretion will determine whether to effect the Reverse Stock Split. Our Board reserves the right to elect not to effect a reverse stock split, including any or all reverse stock split ratios within the proposed range, if it determines, in its sole discretion, that implementing a reverse stock split is not in the best interest of the Company and its stockholders.

If our stockholders do not approve the Reverse Stock Split Proposal, the Company may be delisted from the Nasdaq Capital Market due to our failure to maintain a minimum bid price for the Common Stock of $1.00 per share as required by Nasdaq. Reducing the number of our issued shares of Common Stock should, absent other factors, increase the per share market price of the Common Stock, although we cannot provide any assurance that, following the Reverse Stock Split, our minimum bid price would remain above the minimum bid price requirement of Nasdaq.

The Board has considered the potential harm to the Company and its stockholders should Nasdaq delist the Common Stock from the Nasdaq Capital Market. Delisting could adversely affect the liquidity of the Common Stock because alternatives, such as the OTCQB or the Pink Market maintained by OTC Markets Group Inc., are generally considered to be less liquid and less efficient markets. An investor likely would find it less convenient to sell, or to obtain accurate quotations in seeking to buy, the Common Stock on an over-the-counter market. Many investors likely would not buy or sell the Common Stock due to difficulty in accessing over-the-counter markets, policies preventing them from trading in securities not listed on a national exchange or other reasons. In addition, as a delisted security, the Common Stock would be subject to SEC rules as a “penny stock,” which impose additional disclosure requirements on broker-dealers. The regulations relating to penny stocks, coupled with the typically higher cost per trade to the investor of penny stocks due to factors such as broker commissions generally representing a higher percentage of the price of a penny stock than of a higher-priced stock, would further limit the ability of investors to trade in the Common Stock. In addition, delisting could harm our ability to raise capital through alternative financing sources on terms acceptable to us, or at all, and may result in the potential loss of confidence by investors, suppliers, customers and employees and in fewer business development opportunities. For these reasons and others, delisting would adversely affect the liquidity, trading volume and price of the Common Stock, causing the value of an investment in us to decrease and having an adverse effect on our business, financial condition and results of operations, including our ability to attract and retain qualified employees and to raise capital. The Board believes that the Reverse Stock Split is a potentially effective means for us to maintain compliance with the rules of Nasdaq and to avoid, or at least mitigate, the likely adverse consequences of the Common Stock being delisted from the Nasdaq Capital Market by producing the immediate effect of increasing the bid price of the Common Stock.

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Board Discretion to Implement or Abandon Reverse Stock Split

If the Reverse Stock Split is approved by the Company’s stockholders at the Special Meeting, the actual Reverse Stock Split will be effected, if at all, only upon a subsequent determination by the Board that the Reverse Stock Split is, at such time, in the best interests of the Company and its stockholders. Such determination will be based upon many factors, which are described in the following section. Notwithstanding approval of the Reverse Stock Split by the stockholders, the Board may, in its sole discretion (without further action by our stockholders), abandon any proposed amendment to the Certificate of Incorporation and determine, prior to the effectiveness of any filing with the Delaware Secretary of State, not to effect the Reverse Stock Split, as permitted under Section 242(c) of the General Corporation Law of the State of Delaware (the “DGCL”). By voting in favor of the Reverse Stock Split, you are also expressly authorizing the Board to determine not to proceed with, and to abandon, the Reverse Stock Split if it should so decide. If the Board decides not to implement any of the Reverse Stock Split on or before March 19, 2026, further stockholder approval would be required prior to implementing any reverse stock split.

Criteria to be Used for Decision to Effect a Reverse Stock Split

If the stockholders approve the Reverse Stock Split, the Board will be authorized to proceed with the Reverse Stock Split in its sole discretion. In determining whether to proceed with the Reverse Stock Split, the Board expects to consider a number of factors, including market conditions, existing and expected trading prices of the Common Stock, our actual and projected financial performance, the Nasdaq Capital Market listing requirements, our additional funding requirements, overall trends in the stock market, business developments, and the amount of our authorized but unissued Common Stock. The Board does not intend for this transaction to be the first step in a series of plans or proposals of a “going private” transaction within the meaning of Rule 13e-3 of the Exchange Act.

The Board believes that stockholder approval of a range of potential reverse stock split ratios is in the best interests of our Company and stockholders because it is not possible to predict market conditions at the time the Reverse Stock Split would be implemented. We believe that a range of reverse stock split ratios provides us with the most flexibility to achieve the desired results of the Reverse Stock Split. The reverse stock split ratio to be selected by our Board will be no less than 1-for-14 and not more than 1-for-50.

Determination of the Reverse Stock Split Ratio

The selection of the specific reverse stock split ratio will be based on several factors, including, among other things:

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We believe that granting our Board the authority to set the ratio for the Reverse Stock Split is essential because it allows us to take these factors into consideration and to react to changing market conditions. If the Board chooses to implement the Reverse Stock Split, we will make a public announcement regarding the determination of the reverse stock split ratio.

Principal Effects of the Reverse Stock Split

Effects of the Reverse Stock Split on Issued Shares of Common Stock. If the Reverse Stock Split is effected, it will reduce the total number of issued shares of the Common Stock, including any shares held by the Company as treasury shares, by a reverse stock split ratio of 1-for-14 to 1-for-50. Accordingly, each of our stockholders will own fewer shares of the Common Stock as a result of the Reverse Stock Split. However, the Reverse Stock Split will affect all stockholders uniformly and will not affect any stockholder’s percentage ownership interest in the Company, except to the extent that the Reverse Stock Split would result in an adjustment to a stockholder’s ownership of the Common Stock due to the treatment of fractional shares in the Reverse Stock Split. Therefore, voting rights and other rights and preferences of the holders of the Common Stock will not be affected by the Reverse Stock Split (other than as a result of the treatment of fractional shares). The Common Stock issued pursuant to the Reverse Stock Split will remain fully paid and nonassessable, and the par value per share of the Common Stock will remain $0.0001.

As of the Record Date, approximately 243,312,885 shares of Common Stock were outstanding. For purposes of illustration, if the Reverse Stock Split is effected at a ratio of 1-for-14, the number of issued shares of the Common Stock after the Reverse Stock Split would be approximately 17,379,492 shares (other than as a result of the treatment of fractional shares), and if the Reverse Stock Split is effected at a ratio of 1-for-50, the number of issued shares of the Common Stock after the Reverse Stock Split would be approximately 4,866,258 shares (other than as a result of the treatment of fractional shares).

Effects of the Reverse Stock Split on Issued and Outstanding Shares of Series A Preferred Stock. As of the Record Date, 29,057,097 shares of Series A Preferred Stock were outstanding. If the Reverse Stock Split is effected, it will not affect the total number of issued and outstanding shares of the Series A Preferred Stock or the voting rights and other rights and preferences of the holders thereof. However, the deemed conversion price of the Series A Preferred Stock (which is not convertible into the Common Stock or any other equity of the Company but for which certain rights, preferences and privileges are determined based on an as converted to Common Stock basis or otherwise assume that the shares of the Series A Preferred Stock are converted into shares of the Common Stock) will be divided by a fraction of which the numerator shall be the number of shares of the Common Stock outstanding immediately after the Reverse Stock Split and of which the denominator shall be the number of shares of the Common Stock outstanding immediately prior to the Reverse Stock Split.

Effects of the Reverse Stock Split on Outstanding Public Warrants. As of the Record Date, the Company has outstanding public warrants to purchase 6,958,309 shares of Common Stock (the “Public Warrants”), all of which entitle a holder of each such warrant to purchase one share of the Common Stock at an exercise price of $11.50 per share.

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Pursuant to the Warrant Agreement, dated as of January 6, 2021 (the “Public Warrant Agreement”), between us and Continental Stock Transfer & Trust Company, as warrant agent, the number of shares of Common Stock issuable upon exercise of each Public Warrant shall be decreased in proportion to the decrease in outstanding shares of our Common Stock. Notwithstanding the foregoing, the Public Warrant Agreement provides that the Company may not issue fractional shares upon the exercise of the Public Warrants, and the number of shares to be issued upon such exercise will be adjusted as described in the Public Warrant Agreement. The exercise price for each Public Warrant shall also be adjusted (to the nearest cent) by multiplying such exercise price immediately prior to the Reverse Stock Split by a fraction (x) the numerator of which shall be the number of shares of Common Stock purchasable upon the exercise of the Public Warrants immediately prior the Reverse Stock Split, and (y) the denominator of which shall be the number of shares of Common Stock so purchasable immediately thereafter.

The Public Warrants are currently registered under Section 12(b) of the Exchange Act and are quoted on the Nasdaq Capital Market under the symbol “SCLXW.” The Reverse Stock Split would not affect the registration of our Public Warrants under the Exchange Act.

Effects of the Reverse Stock Split on All Other Outstanding Warrants. As of the Record Date, in addition to the Public Warrants, the Company has the following outstanding warrants to purchase shares of Common Stock:

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If the Reverse Stock Split is effected, proportionate adjustments will generally be required to be made to the per share exercise price and the number of shares issuable upon the exercise of these warrants into shares of Common Stock (with the exception of the Oramed Warrants and the Deposit Warrants, to which no such adjustments shall be made), in each case in accordance with the terms of each such warrant. Such adjustments will result in approximately the same aggregate exercise price being required to be paid upon exercise of such warrants and approximately the same value of shares of Common Stock being delivered upon such exercise immediately following the Reverse Stock Split as is the case immediately preceding the Reverse Stock Split. The number of shares of Common Stock reserved for issuance pursuant to these warrants will be proportionately adjusted based on the final reverse stock split ratio, subject to the treatment of any fractional shares as determined in accordance with the terms of the applicable warrant.

Effects of the Reverse Stock Split on Outstanding Convertible Notes. As of the Record Date, the Company has outstanding senior secured convertible notes (the “Tranche B Notes”) in the aggregate principal amount of $36,994,298, which notes will mature on the two-year anniversary of the issuance date and will be convertible into 35,571,440 shares of Common Stock at a conversion price equal to $1.04 per share of Common Stock.

If the Reverse Stock Split is effected, the conversion price of the Tranche B Notes in effect immediately prior to such split will be proportionately increased. This will result in approximately the same aggregate price being required to be paid upon conversion of such notes and approximately the same value of shares of Common Stock being delivered upon such conversion immediately following the Reverse Stock Split as is the case immediately preceding the Reverse Stock Split. The number of shares of Common Stock reserved for issuance pursuant to these notes will be proportionately adjusted based on the final reverse stock split ratio, subject to the treatment of any fractional shares as described therein.

Effects of the Reverse Stock Split on Outstanding Equity Awards and Plans. If the Reverse Stock Split is effected, the terms of equity awards granted under the Scilex Pharmaceuticals Inc. Amended and Restated 2017 Equity Incentive Plan (the “2017 Plan”), our 2019 Stock Option Plan, as amended (the “2019 Plan”), our 2022 Equity Incentive Plan, as amended (the “2022 Plan”), our 2022 Employee Stock Purchase Plan (the “ESPP”) and our 2023 Inducement Plan (the “Inducement Plan”, and together with the 2017 Plan, the 2019 Plan, the 2022 Plan and the ESPP, the “Equity Plans”), including the price per share covered by each outstanding award and the number of shares covered by each outstanding award, will be proportionally adjusted to maintain their economic value, subject to adjustments for any fractional shares as determined in accordance with the terms thereof. In addition, the total number of shares of the Common Stock that may be the subject of future grants under the Equity Plans, as well as any plan limits on the size of such grants, will be adjusted and proportionately decreased as a result of the Reverse Stock Split. Our Board will make such adjustments to the Equity Plans, which determination shall be final, binding and conclusive.

Effects of the Reverse Stock Split on Voting Rights. Proportionate voting rights and other rights of the holders of the Common Stock and the Series A Preferred Stock would not be affected by the Reverse Stock Split (other than as a result of the treatment of fractional shares). For example, a holder of 1% of the voting power of the outstanding Common Stock immediately prior to the effective time of the Reverse Stock Split would continue to hold 1% of the voting power of the outstanding Common Stock after the Reverse Stock Split (other than as a result of the treatment of fractional shares).

Effects of the Reverse Stock Split on Authorized Share Capital. The total number of shares of capital stock that we are authorized to issue will not be affected by the Reverse Stock Split and will remain at 785,000,000 shares, consisting of 740,000,000 shares of Common Stock and 45,000,000 shares of Preferred Stock.

Effects of the Reverse Stock Split on the Number of Shares of Common Stock Available for Future Issuance. By reducing the number of shares outstanding without reducing the number of shares of authorized but unissued Common Stock, the Reverse Stock Split will increase the number of available but unissued shares. The Board believes the increase is appropriate for use to fund the future operations of the Company. Although the Company

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does not have any pending acquisitions for which shares are expected to be used, the Company may also use authorized shares in connection with the financing of future acquisitions.

Although the Reverse Stock Split would not have any dilutive effect on our stockholders, the Reverse Stock Split without a reduction in the number of shares authorized for issuance would reduce the proportion of shares owned by our stockholders relative to the number of shares authorized for issuance, giving the Board an effective increase in the authorized shares available for issuance, in its discretion. The Board from time to time may deem it to be in the best interests of the Company to enter into transactions and other ventures that may include the issuance of shares of the Common Stock. If the Board authorizes the issuance of additional shares subsequent to the Reverse Stock Split, the dilution to the ownership interest of our existing stockholders may be greater than would occur had the Reverse Stock Split not been effected.

Treatment of Fractional Shares in the Reverse Stock Split

No fractional shares will be issued in connection with the Reverse Stock Split. Stockholders of record who otherwise would be entitled to receive fractional shares will be entitled to an amount in cash (without interest or deduction) equal to the fraction of one share to which such stockholder would otherwise be entitled multiplied by the closing price of the Common Stock on the Nasdaq Capital Market on the last trading day immediately preceding the Effective Time (as defined below). Except for the right to receive the cash payment in lieu of fractional shares, stockholders will not have any voting, dividend or other rights with respect to the fractional shares they would otherwise be entitled to receive.

As of the Record Date, there were approximately 315 stockholders of record of the Common Stock. Upon stockholder approval of the Reverse Stock Split Proposal, if the Board elects to implement the Reverse Stock Split, the Company does not expect that cashing out fractional stockholders would significantly reduce the number of stockholders of record. Reducing the number of post-split stockholders, however, is not the purpose of this proposal.

Stockholders should be aware that, under the escheat laws of the various jurisdictions where stockholders may reside, where we are domiciled, and where the funds will be deposited, sums due for fractional interests that are not timely claimed after the effective date of the Reverse Stock Split may be required to be paid to the designated agent for each such jurisdiction, unless correspondence has been received by us or the exchange agent concerning ownership of such funds within the time permitted in such jurisdiction. Thereafter, stockholders otherwise entitled to receive such funds will have to seek to obtain them directly from the state to which they were paid.

With respect to awards granted under the Equity Plans, the number of shares of the Common Stock issuable thereunder will be rounded down to the nearest whole share of the Common Stock, in order to comply with the requirements of Sections 409A and 424 of the U.S. Internal Revenue Code of 1986, as amended (the “Code”).

Illustration of Certain Hypothetical Effects of the Reverse Stock Split

The following table contains approximate information relating to the Common Stock, as of January 31, 2025, before and after giving effect to a hypothetical Reverse Stock Split of one-for-fourteen (1-for-14), one-for-thirty (1-for-30) and one-for-fifty (1-for-50). However, the sample reverse stock split ratios in the table are examples. If stockholder approval of the Reverse Stock Split Proposal is received, the Board will have the sole discretion, on or before March 19, 2026, to elect, as it determines to be in the best interests of the Company and its stockholders, whether to effect a reverse stock split and, if so, the number of shares — 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49 or 50 of the Common Stock — that will be combined into one share of the Common Stock. The figures below do not give effect to the treatment of fractional shares.

The table below does not contain information relating to the 45,000,000 shares of Preferred Stock authorized for issuance, of which, as of January 31, 2025, 29,057,097 shares of Series A Preferred Stock were outstanding. The

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Reverse Stock Split would have no effect on the total number of the shares of Preferred Stock authorized for issuance or currently issued and outstanding or the applicable voting rights and other rights and preferences of the holders thereof (other than the effect of the Reverse Stock Split on the deemed conversion price of the Series A Preferred Stock as described above).

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The Common Stock and the Public Warrants are currently registered under Section 12(b) of the Exchange Act, and the Company is subject to the periodic reporting and other requirements of the Exchange Act. The Reverse Stock Split would not affect the registration of the Common Stock and the Public Warrants under the Exchange Act. After the Reverse Stock Split, the Common Stock would continue to be quoted on the Nasdaq Capital Market under the symbol “SCLX” (although the Nasdaq Capital Market would likely add the letter “D” to the end of the trading symbol for a period of approximately 20 trading days to indicate that the Reverse Stock Split has occurred) and the Public Warrants would continue to be quoted on the Nasdaq Capital Market under the symbol “SCLXW.”

Certain Risks and Potential Disadvantages Associated with the Reverse Stock Split

If the Reverse Stock Split is implemented, some stockholders may consequently own fewer than one hundred shares of the Common Stock. A purchase or sale of fewer than one hundred shares (an “odd lot” transaction) may result in incrementally higher trading costs through certain brokers, particularly “full service” brokers. Therefore, those stockholders who own fewer than one hundred shares following the Reverse Stock Split may be required to pay modestly higher transaction costs should they then determine to sell their shares of Common Stock.

The effect of the Reverse Stock Split upon the market prices for the Common Stock cannot be accurately predicted, and the history of similar stock split combinations for companies in like circumstances is varied. In

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particular, there is no assurance that the price per share of the Common Stock after the Reverse Stock Split will be 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49 or 50 times, as applicable, the price per share of the Common Stock immediately prior to the Reverse Stock Split. Furthermore, there can be no assurance that the market price of the Common Stock immediately after the proposed Reverse Stock Split will be maintained for any period of time. Even if an increased share price can be maintained, the Reverse Stock Split may not achieve the other desired results that are outlined above. In particular, we cannot assure you that the proposed Reverse Stock Split will increase our stock price and have the desired effect of allowing us to maintain compliance with applicable Nasdaq rules for listing on the Nasdaq Capital Market. Moreover, because some investors may view the Reverse Stock Split negatively, there can be no assurance that approval of the Reverse Stock Split will not adversely impact the market price of the Common Stock or, alternatively, that the market price following the Reverse Stock Split will either exceed or remain in excess of the current market price.

In addition, although we believe the Reverse Stock Split may enhance the desirability of the Common Stock to certain potential investors, we cannot assure you that, if implemented, the Common Stock will be more attractive to institutional and other long-term investors. In addition, the Reverse Stock Split may decrease, or may not increase, the liquidity of the Common Stock since there would be a reduced number of shares outstanding after the Reverse Stock Split.

The Reverse Stock Split may be viewed negatively by the market and, consequently, could lead to a decrease in our overall market capitalization. If the per share market price of the Common Stock does not increase in proportion to the reverse stock split ratio, then the value of the Company, as measured by our market capitalization, will be reduced. Additionally, any reduction in our market capitalization may be magnified as a result of the smaller number of total shares of the Common Stock outstanding following the Reverse Stock Split.

Effective Time

If the proposed Reverse Stock Split is approved at the Special Meeting and the Board elects to proceed with the Reverse Stock Split in one of the approved ratios, the Reverse Stock Split would become effective on the date of the filing with the office of the Delaware Secretary of State of, or at the time specified in (the “Effective Time”), the applicable certificate of amendment to the Certificate of Incorporation. Except as explained above with respect to fractional shares, at the Effective Time, all shares of Common Stock issued immediately prior thereto will be, automatically and without any action on the part of the stockholders, reclassified and combined into shares of Common Stock in accordance with the reverse stock split ratio determined by the Board following the Special Meeting. If the Board decides not to implement any of the Reverse Stock Split on or before March 19, 2026, further stockholder approval would be required prior to implementing any reverse stock split.

Exchange of Stock Certificates

As soon as practicable after the effective date of the Reverse Stock Split, stockholders will be notified that the Reverse Stock Split has been effected. Continental Stock Transfer & Trust Company, our transfer agent, will act as the exchange agent for purposes of implementing the exchange of stock certificates. Holders of pre-split shares of Common Stock will be asked to surrender to the exchange agent certificates representing pre-split shares of Common Stock in exchange for certificates representing post-split shares of Common Stock in accordance with the procedures to be set forth in a letter of transmittal that will be delivered to our stockholders. No new certificates will be issued to a stockholder until the stockholder has surrendered to the exchange agent his, her or its outstanding certificate(s) together with the properly completed and executed letter of transmittal. In connection with the Reverse Stock Split, the CUSIP number for the Common Stock will change from its current CUSIP number. This new CUSIP number will appear on any new stock certificates issued representing post-split shares. STOCKHOLDERS SHOULD NOT DESTROY ANY STOCK CERTIFICATES AND SHOULD NOT SUBMIT THEIR STOCK CERTIFICATES UNTIL THEY RECEIVE A TRANSMITTAL FORM FROM OUR EXCHANGE AGENT. STOCKHOLDERS ARE ENCOURAGED TO PROMPTLY SURRENDER CERTIFICATES TO THE EXCHANGE AGENT FOLLOWING RECEIPT OF

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TRANSMITTAL FORMS IN ORDER TO AVOID HAVING SHARES POSSIBLY BECOMING SUBJECT TO ESCHEAT LAWS.

Stockholders whose shares of Common Stock are held by their stockbroker do not need to submit old share certificates for exchange. These shares will automatically reflect the new quantity of shares based on the selected reverse stock split ratio. Beginning on the effective date of the Reverse Stock Split, each certificate representing pre-split shares of Common Stock will be deemed for all corporate purposes to evidence ownership of post-split shares of Common Stock.

Accounting Consequences

The par value per share of the Common Stock would remain unchanged at $0.0001 per share after the Reverse Stock Split. As a result, on the effective date of the Reverse Stock Split, the amount on our balance sheet attributable to the Common Stock would be reduced proportionally, based on the exchange ratio of the Reverse Stock Split, from its present amount, and the additional paid-in capital account would be credited with the amount by which the Common Stock is reduced. The per share Common Stock net loss would be increased because there would be fewer shares of the Common Stock outstanding. We do not anticipate that any other accounting consequences would arise as a result of the Reverse Stock Split.

Potential Anti-Takeover Effect

Even though a potential Reverse Stock Split would result in an increased proportion of unissued authorized shares to issued shares, which could, under certain circumstances, have an anti-takeover effect (for example, by permitting issuances that would dilute the stock ownership of a person seeking to effect a change in the composition of the Board or contemplating a tender offer or other transaction for the combination of us with another company), the Reverse Stock Split Proposal is not being proposed in response to any effort of which we are aware to accumulate shares of our Common Stock or obtain control of us, nor is it part of a plan by management to recommend a series of similar amendments to our Board and our stockholders.

No Appraisal Rights

Under the DGCL, our stockholders do not have a right to dissent and are not entitled to appraisal rights with respect to the proposed amendment to the Certificate of Incorporation to effect the Reverse Stock Split, and we will not independently provide our stockholders with any such rights.

Regulatory Approvals

The Reverse Stock Split will not be consummated, if at all, until after approval of our stockholders is obtained. We are not obligated to obtain any governmental approvals or comply with any state or federal regulations in order to effect the Reverse Stock Split other than the filing of the applicable certificate of amendment to the Certificate of Incorporation with the Delaware Secretary of State and receipt of a notice of effectiveness from the Financial Industry Regulatory Authority, Inc.

Certain U.S. Federal Income Tax Consequences

The following discussion is a general summary of certain U.S. federal income tax consequences of the proposed Reverse Stock Split that may be relevant to U.S. holders and non-U.S. holders (each as defined below) of the Common Stock, but does not purport to be a complete analysis of all potential tax effects. The effects of other U.S. federal tax laws, such as estate and gift tax laws, and any applicable state, local or non-U.S. tax laws are not discussed. This discussion is based on the Code, Treasury regulations promulgated thereunder (the “Treasury Regulations”), judicial decisions, and published rulings and administrative pronouncements of the U.S. Internal Revenue Service (the “IRS”), in each case in effect as of the date hereof. These authorities may change or be

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subject to differing interpretations. Any such change or differing interpretation may be applied retroactively in a manner that could adversely affect a holder of the Common Stock. We have not sought and will not seek an opinion of counsel or any rulings from the IRS regarding the matters discussed below. There can be no assurance that the IRS or a court will not take a contrary position to that discussed below regarding the tax consequences of the proposed Reverse Stock Split.

This discussion is limited to holders that hold the Common Stock as “capital assets” within the meaning of Section 1221 of the Code (generally, property held for investment). This discussion does not address all U.S. federal income tax consequences relevant to a holder’s particular circumstances, including the impact of the Medicare contribution tax on net investment income or the alternative minimum tax. In addition, it does not address consequences relevant to holders subject to special rules, including, without limitation: persons that are not U.S. holders (as defined below); persons subject to the alternative minimum tax; U.S. holders (as defined below) whose functional currency is not the U.S. dollar; persons holding the Common Stock as part of a hedge, straddle or other risk reduction strategy or as part of a conversion transaction or other integrated investment; banks, insurance companies, and other financial institutions; real estate investment trusts or regulated investment companies; brokers, dealers or traders in securities; corporations that accumulate earnings to avoid U.S. federal income tax; S corporations, partnerships or other entities or arrangements treated as partnerships or pass-through entities for U.S. federal income tax purposes (and investors therein); tax-exempt organizations or governmental organizations; persons deemed to sell the Common Stock under the constructive sale provisions of the Code; persons who hold or receive the Common Stock pursuant to the exercise of any employee stock option or otherwise as compensation; tax-qualified retirement plans; and holders that hold or have held, directly, indirectly or constructively pursuant to attribution rules, more than 5% of the shares of common stock at any time during the five-year period ending on the date of the consummation of the Reverse Stock Split.

If an entity treated as a partnership for U.S. federal income tax purposes holds the Common Stock, the tax treatment of a partner in the partnership will depend on the status of the partner, the activities of the partnership and certain determinations made at the partner level. Accordingly, partnerships holding the Common Stock and the partners in such partnerships should consult their tax advisors regarding the U.S. federal income tax consequences to them.

THIS DISCUSSION IS FOR INFORMATIONAL PURPOSES ONLY AND IS NOT INTENDED AS TAX ADVICE. HOLDERS OF THE COMMON STOCK SHOULD CONSULT THEIR TAX ADVISORS WITH RESPECT TO THE APPLICATION OF THE U.S. FEDERAL INCOME TAX LAWS TO THEIR PARTICULAR SITUATIONS AS WELL AS ANY TAX CONSEQUENCES OF THE REVERSE STOCK SPLIT ARISING UNDER OTHER U.S. FEDERAL TAX LAWS (INCLUDING ESTATE AND GIFT TAX LAWS), UNDER THE LAWS OF ANY STATE, LOCAL OR NON-U.S. TAXING JURISDICTION OR UNDER ANY APPLICABLE TAX TREATY.

Tax Consequences to U.S. Holders

For purposes of this discussion, a “U.S. holder” is a beneficial owner of the Common Stock who is for U.S. federal income tax purposes: (i) an individual who is a citizen or resident of the United States; (ii) a corporation (or other entity treated as a corporation for U.S. federal income tax purposes) created or organized under the laws of the United States, any state thereof, or the District of Columbia; (iii) an estate, the income of which is subject to U.S. federal income taxation regardless of its source; or (iv) a trust (a) the administration of which is subject to the primary supervision of a U.S. court and that has one or more United States persons that have the authority to control all substantial decisions of the trust or (b) that has made a valid election under applicable Treasury Regulations to be treated as a United States person.

The proposed Reverse Stock Split is expected to be treated as a recapitalization for U.S. federal income tax purposes. Therefore, except as described below with respect to cash received in lieu of fractional shares, no gain or loss will be recognized upon the proposed reverse stock split. Accordingly, the aggregate tax basis of the

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U.S. holder in the new shares should equal the U.S. holder’s aggregate tax basis in its pre-split shares of the Common Stock (excluding the portion of the tax basis that is allocable to any fractional share), and the holding period for the post-split shares of Common Stock should include the holding period for the pre-split shares of Common Stock. Holders of shares of the Common Stock acquired on different dates and at different prices should consult their tax advisors regarding the allocation of the tax basis and holding period of such shares.

The treatment of a U.S. holder who receives cash in lieu of a fractional share of the Common Stock pursuant to the proposed Reverse Stock Split is unclear. Such U.S. holder may recognize capital gain or loss in an amount equal to the difference between the amount of cash received and the portion of the U.S. holder’s tax basis in the pre-split shares of Common Stock that is allocated to such fractional share of the Common Stock. Such capital gain or loss will be long-term capital gain or loss if the U.S. holder has held the pre-split shares of Common Stock for more than one year as of the effective date of the proposed Reverse Stock Split. The deductibility of capital losses is subject to limitations. However, cash received by a U.S. holder in lieu of fractional shares could be treated as a dividend for U.S. federal income tax purposes instead of capital gain. We recommend that U.S. holders of our Common Stock consult their own tax advisors to determine the extent to which their receipts of cash in lieu of fractional shares could be treated as dividends.

Payments of cash made in lieu of a fractional share of the Common Stock may, under certain circumstances, be subject to information reporting and U.S. “backup withholding.” To avoid backup withholding, each holder of our shares of the Common Stock that does not otherwise establish an exemption should furnish its taxpayer identification number and comply with the applicable certification procedures. Backup withholding is not an additional tax and any amounts withheld will be allowed as a credit against the holder’s U.S. federal income tax liability and may entitle such holder to a refund, provided that required information is timely furnished to the IRS.

Tax Consequences to Non-U.S. Holders

Generally, a beneficial owner of our Common Stock that is neither a U.S. holder nor a partnership (or an entity treated as a partnership for U.S. federal income tax purposes) (a “non-U.S. holder”) should not recognize any gain or loss upon the Reverse Stock Split.

The treatment of a non-U.S. holder who receives cash in lieu of a fractional share of the Common Stock pursuant to the proposed Reverse Stock Split is unclear. If such non-U.S. holder were to recognize capital gain or loss, such gain or loss should also generally not be subject to U.S. federal income or withholding tax unless (a) such gain or loss is effectively connected with the non-U.S. holder’s conduct of a trade or business in the United States (and, if required by an applicable income tax treaty, is attributable to a U.S. permanent establishment maintained by the non-U.S. holder), (b) the non-U.S. holder is a nonresident alien individual present in the United States for 183 days or more during the taxable year of the Reverse Stock Split and certain other conditions are met, or (c) our Common Stock constitutes a U.S. real property interest by reason of our status as U.S. real property holding corporation (“USRPHC”) for U.S. federal income tax purposes at any time within the shorter of the five-year period preceding the Reverse Stock Split and the non-U.S. holder’s holding period for our Common Stock. However, because the determination of whether we are a USRPHC depends on the fair market value of our U.S. real property interests relative to the fair market value of our other business assets, there can be no assurance that we are not or were not at any time a USRPHC. Gain described in clause (a) above generally will be subject to U.S. federal income tax on a net income basis in the same manner as if the non-U.S. holder were a U.S. holder. A non-U.S. holder that is a foreign corporation also may be subject to a branch profits tax at a rate of 30% (or such lower rate specified by an applicable income tax treaty) on such effectively connected gain, as adjusted for certain items. A non-U.S. holder described in clause (b) above will be subject to U.S. federal income tax at a rate of 30% (or, if applicable, a lower treaty rate) on the gain realized with respect to cash received in lieu of a fractional share, which may be offset by certain U.S. source capital losses, even though the non-U.S. holder is not considered a resident of the United States. With respect to clause (c) above, if we are a USRPHC, a Non-U.S. holder may qualify for an exemption if our Common Stock is regularly traded on an established

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securities market and the non-U.S. holder does not actually or constructively hold more than 5% of such regularly traded Common Stock at any time within the shorter of the five-year period preceding the Reverse Stock Split and the non-U.S. holder’s holding period for our Common Stock. If no exemption is available and we are a USRPHC, a Non-U.S. holder’s cash received in lieu of a fractional share will generally be subject to withholding at a rate of 15% and such Non-U.S. holder will generally be taxed on any gain in the same manner as gain that is effectively connected with the conduct of a U.S. trade or business, except that the branch profits tax generally should not apply to such gain. Non-U.S. holders should consult with their tax advisors on the availability of any exemption in the event we are or become a USRPHC.

However, cash received by a non-U.S. holder in lieu of fractional shares could be treated as a dividend for U.S. federal income tax purposes (which could be subject to U.S. federal income or withholding tax at a 30% rate (or lower, if applicable, treaty rate)) instead of capital gain. Non-U.S. holders of our Common Stock should consult their own tax advisors to determine the extent to which their receipts of cash in lieu of fractional shares could be treated as dividends.

In general, backup withholding and information reporting will not apply to payments of cash in lieu of a fractional share of our Common Stock to a non-U.S. holder pursuant to the Reverse Stock Split if the non-U.S. holder certifies under penalties of perjury that it is a non-U.S. holder, and the applicable withholding agent does not have actual knowledge to the contrary. Under certain circumstances, the amount of cash paid to a non-U.S. holder in lieu of a fractional share of our Common Stock, the name and address of the beneficial owner and the amount, if any, of tax withheld may be reported to the IRS.

Interests of Certain Persons in the Reverse Stock Split Proposal

Certain of our officers and directors have an interest in Proposal No. 1 as a result of their ownership of shares of the Common Stock, as set forth in the section entitled “Security Ownership of Certain Beneficial Owners and Management” below. However, we do not believe that our officers or directors have interests in Proposal No. 1 that are different from or greater than those of any other of our stockholders.

Vote Required

The approval of any amendment to the Certificate of Incorporation to effect a Reverse Stock Split of our Common Stock, within a range of 1-for-14 to 1-for-50 (or any number in between), without reducing the authorized number of shares of the Common Stock, and the filing of a final amendment with the ratio within such range to be determined in the sole discretion of our Board at any time on or before March 19, 2026, without further approval or authorization of our stockholders, requires that the votes cast “For” the Reverse Stock Split Proposal exceed the votes cast “Against” the Reverse Stock Split Proposal. Abstentions and broker non-votes will have no effect on the outcome of this proposal.

THE BOARD OF DIRECTORS RECOMMENDS A VOTE “FOR” THE APPROVAL OF ANY AMENDMENT TO THE RESTATED CERTIFICATE OF INCORPORATION TO EFFECT A REVERSE STOCK SPLIT OF THE COMMON STOCK WITHIN A RANGE OF 1-FOR-14 TO A MAXIMUM OF A 1-FOR-50 (OR ANY NUMBER IN BETWEEN), WITHOUT REDUCING THE AUTHORIZED NUMBER OF SHARES OF THE COMMON STOCK, AND THE FILING OF A FINAL AMENDMENT WITH THE RATIO WITHIN SUCH RANGE TO BE DETERMINED IN THE SOLE DISCRETION OF THE BOARD AT ANY TIME ON OR BEFORE MARCH 19, 2026, WITHOUT FURTHER APPROVAL OR AUTHORIZATION OF OUR STOCKHOLDERS.

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PROPOSAL NO. 2

ADJOURNMENT PROPOSAL

Background of and Rationale for the Adjournment Proposal

The Board believes that, if the number of affirmative votes received from the stockholders of a majority of the votes cast at the Special Meeting by the stockholders entitled to vote on the Reverse Stock Split are insufficient to approve the Reverse Stock Split Proposal, it is in the best interests of the stockholders to enable the Board to continue to seek to obtain a sufficient number of additional affirmative votes to approve the Reverse Stock Split Proposal.

In the Adjournment Proposal, we are asking stockholders to authorize the holder of any proxy solicited by the Board to vote in favor of adjourning the Special Meeting or any adjournment thereof. If our stockholders approve this proposal, we could adjourn the Special Meeting, and any adjourned session of the Special Meeting, to use the additional time to solicit additional proxies in favor of the Reverse Stock Split Proposal.

Additionally, approval of the Adjournment Proposal could mean that, in the event we receive proxies indicating that a majority of the votes cast at the Special Meeting by the stockholders entitled to vote on the Reverse Stock Split Proposal have voted against the Reverse Stock Split Proposal, we could adjourn the Special Meeting without a vote on the Reverse Stock Split Proposal and use the additional time to solicit the holders of those shares to change their vote in favor of the Reverse Stock Split Proposal.

If it is necessary or appropriate (as determined in good faith by the Board) to adjourn the Special Meeting, no notice of the adjourned meeting is required to be given to our stockholders under Delaware law, other than an announcement at the Special Meeting of the time and place to which the Special Meeting is adjourned, so long as the meeting is adjourned for 30 days or less and no new record date is fixed for the adjourned meeting. At the adjourned meeting, we may transact any business which might have been transacted at the original meeting.

Interests of Certain Persons in the Adjournment Proposal

We do not believe that our officers or directors have interests in Proposal No. 2 that are different from or greater than those of any other of our stockholders.

Vote Required

The approval of the Adjournment Proposal requires the affirmative vote of a majority of the voting power of the issued and outstanding shares of our Common Stock and Series A Preferred Stock entitled to vote at the Special Meeting, present in person, or by remote communication, if applicable, or represented by proxy. Abstentions will have the effect of a vote against this proposal, and broker non-votes will have no effect.

THE BOARD OF DIRECTORS RECOMMENDS A VOTE “FOR” THE ADJOURNMENT OF THE SPECIAL MEETING, IF NECESSARY, TO SOLICIT ADDITIONAL PROXIES IF THERE ARE INSUFFICIENT VOTES AT THE TIME OF THE SPECIAL MEETING TO APPROVE THE REVERSE STOCK SPLIT PROPOSAL.

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SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT

The following table sets forth information regarding the beneficial ownership of our Common Stock as of January 31, 2025 by:

Beneficial ownership is determined according to the rules of the SEC, which generally provide that a person has beneficial ownership of a security if he, she or it possesses sole or shared voting or investment power over that security, including options and warrants that are currently exercisable or exercisable within 60 days. Shares subject to options and warrants that are currently exercisable or exercisable within 60 days of January 31, 2025 are considered outstanding and beneficially owned by the person holding such options or warrants for the purpose of computing the percentage ownership of that person, but are not treated as outstanding for the purpose of computing the percentage ownership of any other person.

The beneficial ownership of our Common Stock is based on 243,312,885 shares of such Common Stock outstanding as of January 31, 2025. Voting power is based on 243,312,885 shares of Common Stock and 29,057,097 shares of Series A Preferred Stock outstanding as of January 31, 2025, with the Series A Preferred Stock entitled to an aggregate of 32,596,371 votes as a result of adjustments to the deemed conversion price of such preferred stock in accordance with the terms of the Certificate of Designations. Shares of Series A Preferred Stock are held solely by SCLX Stock Acquisition JV LLC, our indirect wholly owned subsidiary (“SCLX JV”).

Unless otherwise indicated, we believe, based on information available to us, that all persons and entities named in the table have sole voting and investment power with respect to all shares shown as beneficially owned by them.

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25

HOUSEHOLDING OF PROXY MATERIALS

The SEC has adopted rules that permit companies and intermediaries (e.g., brokers) to satisfy the delivery requirements for proxy materials with respect to two or more stockholders sharing the same address by delivering a single set of proxy materials addressed to those stockholders. This process, which is commonly referred to as “householding,” potentially means extra convenience for stockholders and cost savings for companies.

This year, a number of brokers with account holders who are our stockholders will be “householding” our proxy materials. A single set of proxy materials will be delivered to multiple stockholders sharing an address unless contrary instructions have been received from the affected stockholders. Once you have received notice from your broker that they will be “householding” communications to your address, “householding” will continue until you are notified otherwise or until you revoke your consent. If, at any time, you no longer wish to participate in “householding” and would prefer to receive a separate set of proxy materials, please notify your broker, notify our Corporate Secretary at (650) 516-4310 or send a written request to: Corporate Secretary at Scilex Holding Company, 960 San Antonio Road, Palo Alto, CA 94303. Stockholders who currently receive multiple copies of proxy materials at their addresses and would like to request “householding” of their communications should contact their brokers.

WHERE YOU CAN FIND ADDITIONAL INFORMATION

We have filed reports, proxy statements and other information with the SEC. The SEC maintains a website that contains the reports, proxy statements and other information we file electronically with the SEC. The address of the SEC website is http://www.sec.gov.

You may request, and we will provide at no cost, a copy of these filings, including any exhibits to such filings, by writing or telephoning us at the following address: Corporate Secretary at Scilex Holding Company, 960 San Antonio Road, Palo Alto, CA 94303. You may also access these filings at our website under the investor relations link at https://www.scilexholding.com/investors/overview.

OTHER MATTERS

Our Board does not know of any other matters to be presented at the Special Meeting. If any additional matters are properly presented at the Special Meeting, the persons named in the enclosed proxy card will have discretion to vote shares they represent in accordance with their own judgment on such matters.

It is important that your shares be represented at the Special Meeting, regardless of the number of shares that you hold. You are, therefore, urged to vote by using the Internet as instructed on the enclosed proxy card or execute and return, at your earliest convenience, the enclosed proxy card in the envelope that has also been provided.

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APPENDIX A

CERTIFICATE OF AMENDMENT

TO THE

RESTATED CERTIFICATE OF INCORPORATION

OF

SCILEX HOLDING COMPANY

Scilex Holding Company, a corporation organized and existing under the laws of the State of Delaware (the “Corporation”), does hereby certify that:

“D. Effective upon the effectiveness of the filing of this Certificate of Amendment to the Restated Certificate of Incorporation of the Corporation with the Secretary of State of the State of Delaware (the “Effective Time”), each [_______]¹ shares of Common Stock issued immediately prior to the Effective Time shall be reclassified, changed and combined into one (1) validly issued, fully paid and non-assessable share of Common Stock without any further action by the Corporation or the holder thereof (the “Reverse Stock Split”); provided that no fractional shares of Common Stock shall be issued to any holder in connection with the Reverse Stock Split and in lieu thereof, any stockholder who otherwise would be entitled to receive fractional shares of Common Stock (taking into account all shares of capital stock owned by such stockholder) shall be entitled to receive cash (without interest or deduction) equal to the fraction of one share of Common Stock to which such stockholder would otherwise be entitled multiplied by the closing price of the Common Stock as reported on the Nasdaq Capital Market on the trading day immediately preceding the date prior to the date of the Effective Time. Each certificate that, immediately prior to the Effective Time, represented shares of Common Stock that were issued and outstanding immediately prior to the Effective Time (“Old Certificates”), shall, from and after the Effective Time, represent that whole number of shares of Common Stock into which the shares of Common Stock represented by the Old Certificates shall have been reclassified, changed and combined, subject to the treatment of fractional shares as described above.”

A-1

IN WITNESS WHEREOF, the Corporation has caused this Certificate of Amendment to the Restated Certificate of Incorporation to be signed by its Chief Executive Officer and President on _____________, 2025.

A-2

SCILEX HOLDING COMPANY
960 SAN ANTONIO RD   PALO ALTO, CA 94303		VOTE BY INTERNET Before The Meeting - Go to www.proxyvote.com or scan the QR Barcode above   Use the Internet to transmit your voting instructions and for electronic delivery of information up until 11:59 p.m. Eastern Time on March 18, 2025. Have your proxy card in hand when you access the web site and follow the instructions to obtain your records and to create an electronic voting instruction form.
		During The Meeting - Go to www.virtualshareholdermeeting.com/SCLX2025SM   You may attend the meeting via the Internet and vote during the meeting. Have the information that is printed in the box marked by the arrow available and follow the instructions.
		VOTE BY PHONE - 1-800-690-6903 Use any touch-tone telephone to transmit your voting instructions up until 11:59 p.m. Eastern Time on March 18, 2025. Have your proxy card in hand when you call and then follow the instructions.
		VOTE BY MAIL Mark, sign and date your proxy card and return it in the postage-paid envelope we have provided or return it to Vote Processing, c/o Broadridge, 51 Mercedes Way, Edgewood, NY 11717.

TO VOTE, MARK BLOCKS BELOW IN BLUE OR BLACK INK AS FOLLOWS:

V64341-S09806       KEEP THIS PORTION FOR YOUR RECORDS

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DETACH AND RETURN THIS PORTION ONLY

THIS PROXY CARD IS VALID ONLY WHEN SIGNED AND DATED.

You are cordially invited to attend our 2025 Special Meeting of Stockholders,

to be held virtually, via live webcast at www.virtualshareholdermeeting.com/SCLX2025SM

at 9:00 AM Pacific Time on Wednesday, March 19, 2025.

Important Notice Regarding the Availability of Proxy Materials for the Special Meeting:

The Proxy Statement is available at www.proxyvote.com.

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