LivePerson (LPSN) urges FOR vote ahead of SoundHound AI acquisition meeting

Rhea-AI Filing Summary

LivePerson, Inc. outlines upcoming communications around SoundHound AI’s proposed acquisition of LivePerson. The company plans an investor webcast and Q&A on August 5 at 8:00 a.m. ET to address stockholder questions and explain why its board is encouraging a “FOR” vote on the transaction. As the August 20 special meeting to approve the deal approaches, LivePerson expects more external outreach, including press releases, stockholder letters and social media reminders to vote in favor. The communication also includes extensive forward-looking statements cautionary language, outlines key risks that could affect completion and integration of the transaction, clarifies that this is not an offer or solicitation to buy or sell securities, and directs investors to the Form S-4 and proxy statement/prospectus filed on July 9, 2026, and other SEC filings for detailed information before making any voting or investment decisions.

Filing Explained

LivePerson’s July 30 Form 425 keeps the SoundHound transaction at the proposed, pre-vote stage; it says SoundHound common shares are to be issued in the transaction, but does not disclose that the deal has closed or those shares have been issued.

Key Figures

Investor webcast: August 5 at 8:00 a.m. ET Special meeting date: August 20 Proxy statement/prospectus date: July 9, 2026 +1 more

4 metrics

Investor webcast August 5 at 8:00 a.m. ET Scheduled webcast and Q&A on the proposed SoundHound AI acquisition

Special meeting date August 20 LivePerson stockholder meeting to approve the transaction with SoundHound AI

Proxy statement/prospectus date July 9, 2026 Date of the Form S-4 proxy statement/prospectus mailed to LivePerson stockholders

Fiscal year-end referenced December 31, 2025 Year ended December 31, 2025 referenced in LivePerson’s Form 10-K amendment

Key Terms

forward-looking statements, registration statement on Form S-4, proxy statement/prospectus, Notes Restructuring Agreement, +1 more

5 terms

forward-looking statements regulatory

"This document contains "forward-looking statements" within the meaning of the U.S. federal"

Forward-looking statements are predictions or plans that companies share about what they expect to happen in the future, like estimating sales or profits. They matter because they help investors understand a company's outlook, but since they are based on guesses and assumptions, they can sometimes be wrong.

registration statement on Form S-4 regulatory

"SoundHound AI has filed with the U.S. Securities and Exchange Commission a registration statement on Form S-4"

A registration statement on Form S-4 is a formal filing with the U.S. Securities and Exchange Commission used when a company issues shares or other securities as part of a merger, acquisition, exchange offer or similar corporate deal. It bundles the transaction terms, financial statements, risk factors and shareholder vote materials so investors can assess the deal; think of it as a detailed prospectus or buyer’s packet that explains what you would own and how the deal could change your stake.

proxy statement/prospectus regulatory

"a definitive proxy statement of LivePerson and that constitutes a prospectus of SoundHound AI"

A proxy statement or prospectus is a document that companies send to shareholders to provide important information about upcoming decisions or investments, such as voting on company issues or offering new shares to the public. It helps investors understand the details and risks involved, enabling them to make informed choices about their ownership or involvement with the company.

Notes Restructuring Agreement financial

"to consummate the notes restructuring transactions contemplated by the Notes Restructuring Agreement"

participants in the solicitation regulatory

"may be deemed to be participants in the solicitation of proxies with respect to the proposed transaction"

People or firms who actively seek to influence shareholders’ choices in a corporate action—such as a vote, merger, proxy contest, or tender offer. This can include company insiders, advisers, bankers, lawyers and professional solicitors who contact investors to persuade them. Investors care because knowing who is doing the persuading reveals potential conflicts, resources and credibility behind the campaign, much like checking who is organizing a political campaign before accepting its message.

Offering Details

shelf/ATM

Offering

Offering Type shelf/ATM

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Available on EDGAR 07/30/2026 - 04:17 PM Accepted by SEC EDGAR 07/30/2026 - 04:06 PM Learn about SEC filing dates

FAQ

What is LivePerson (LPSN) communicating about the SoundHound AI acquisition?

LivePerson describes SoundHound AI’s proposed acquisition of LivePerson and explains that its board is encouraging a “FOR” vote on the transaction at an upcoming special stockholder meeting.

When is LivePerson’s special meeting to vote on the SoundHound AI transaction?

LivePerson states that a special meeting to approve the proposed transaction with SoundHound AI is scheduled for August 20, where stockholders will vote on the acquisition-related proposals.

When will LivePerson hold its investor webcast about the SoundHound deal?

LivePerson plans an investor webcast and Q&A on Wednesday, August 5, at 8:00 a.m. ET to address additional questions from stockholders regarding the proposed acquisition by SoundHound AI.

What key risks to the SoundHound–LivePerson deal does LPSN highlight?

LivePerson lists risks including potential failure to obtain shareholder approvals, not completing contemplated notes restructuring, integration challenges, higher-than-expected transaction costs, reputational impacts, management distraction, and possible legal proceedings affecting the acquisition.

Where can LivePerson (LPSN) investors find the Form S-4 and proxy statement/prospectus?

Investors are directed to the SEC’s website at www.sec.gov and the investor-relations pages of SoundHound AI and LivePerson, where the Form S-4 and the July 9, 2026 proxy statement/prospectus are available free of charge.

Does this LivePerson communication constitute an offer to sell or buy securities?

LivePerson explicitly states that this communication is not an offer or solicitation to sell, buy or exchange securities, and that any offering would only occur through a prospectus meeting Section 10 of the Securities Act.

Filed by: LivePerson, Inc.

Pursuant to Rule 425 under the Securities Act of 1933

Subject Company: LivePerson, Inc.

Commission File No. 001-41926

Date: July 30, 2026

FROM: Global Comms

Subject: Update on our stockholder vote

This week, LivePerson announced an investor webcast and Q&A on Wednesday, August 5, at 8:00 a.m. ET regarding the proposed transaction with SoundHound AI. On this webcast, we intend to address additional questions from stockholders and reinforce why the LivePerson Board is encouraging a “FOR” vote.

You can read the announcement here, and you can tune into the webcast on our investor relations website.

As we approach the August 20 special meeting to approve the transaction with SoundHound, you can expect to see more external communications, including press releases, stockholder letters and social media posts, reminding stockholders to cast their vote in support of the deal.

Please continue to direct any external media or investor inquiries to pr@liveperson.com and avoid commenting through personal or unofficial channels.

The SoundHound x LivePerson internal site will continue to host all internal and external communications related to the transaction.

Please review important legal information here.

************************

Forward-Looking Statements

This document contains "forward-looking statements" within the meaning of the U.S. federal securities laws about the expectations, beliefs, plans, intentions, prospects, financial results and strategies relating to SoundHound AI’s proposed acquisition of LivePerson. Such forward-looking statements include, among others, statements regarding the timing of filing the definitive proxy/prospectus and timing of LivePerson’s special meeting, obtaining regulatory approvals, the timing of closing of the proposed acquisition, and the parties’ expectations, intentions, strategies, assumptions or beliefs about future events, results of operations or performance or that do not solely relate to historical or current facts. Forward-looking statements are predictions, projections and other statements about future events or conditions that are based on current expectations and assumptions and, as a result, are subject to risks and uncertainties. Many factors could cause actual future events to differ materially from the forward-looking statements in this communication, including: (1) the occurrence of any event, change, or other circumstance that could give rise to the right of one or both of the parties to terminate the definitive merger agreement between LivePerson and SoundHound; (2) the possibility that the transaction does not close when expected or at all due to the failure to satisfy all of the conditions to closing on a timely basis or at all, including the failure to obtain the required shareholder approvals or to consummate the notes restructuring transactions contemplated by the Notes Restructuring Agreement; (3) the risk that the benefits from the transaction may not be fully realized or may take longer to realize than expected, including as a result of changes in, or problems arising from, general economic and market conditions,

interest and exchange rates, monetary policy, trade policy (including tariff levels), laws and regulations and their enforcement, and the degree of competition in the geographic and business areas in which LivePerson and SoundHound operate; (4) any failure to promptly and effectively integrate the businesses of LivePerson and SoundHound; (5) the possibility that the transaction may be more expensive to complete than anticipated, including as a result of unexpected factors or events; (6) reputational risk and potential adverse reactions of LivePerson’s or SoundHound’s customers, employees or other business partners, including those resulting from the announcement, pendency or completion of the transaction; (7) the diversion of management’s attention and time to the transaction from ongoing business operations and opportunities; and (8) the outcome of any legal proceedings that may be instituted against LivePerson or SoundHound or in connection with the transaction. Further information on factors that could affect the forward-looking statements and expectations above are contained in the filings that LivePerson and/or SoundHound AI have filed, or that will be filed, with the U.S. Securities and Exchange Commission (the “SEC”), including as set forth in the Form S-4 and the proxy statement/prospectus contained therein, as well as the documents incorporated by reference therein.

All forward-looking statements are expressly qualified in their entirety by the cautionary statements set forth above. Forward-looking statements speak only as of the date they are made, and LivePerson does not undertake or assume any obligation to update publicly any of these statements to reflect actual results, new information or future events, changes in assumptions, or changes in other factors affecting forward-looking statements, except to the extent required by applicable law.

No Offer or Solicitation

This communication is not intended to be, and shall not constitute, an offer to sell, buy or exchange or the solicitation of an offer to sell, buy or exchange any securities, or a solicitation of any vote or approval, nor shall there be any sale of securities in any jurisdiction in which such offer, solicitation or sale would be unlawful prior to registration or qualification under the securities laws of any such jurisdiction. No offering of securities shall be made except by means of a prospectus meeting the requirements of Section 10 of the Securities Act.

Additional Information and Where to Find It

In connection with the proposed transaction, SoundHound AI has filed with the U.S. Securities and Exchange Commission (the “SEC”) a registration statement on Form S-4 (the “Form S-4”) that includes a definitive proxy statement of LivePerson and that constitutes a prospectus of SoundHound AI with respect to the shares of the SoundHound AI common stock to be issued in the proposed transaction, dated July 9, 2026 (the “proxy statement/prospectus”). The proxy statement/prospectus was filed with the SEC on July 9, 2026 by LivePerson, and the mailing of the proxy statement/prospectus to LivePerson’s stockholders began on or about the same date. Each of SoundHound AI and LivePerson may also file other relevant documents with the SEC regarding the proposed transaction.

This communication is not a substitute for the Form S-4, the proxy statement/prospectus or any other document that SoundHound AI or LivePerson has filed, or may file, with the SEC in connection with the proposed transaction. INVESTORS AND SECURITY HOLDERS OF SOUNDHOUND AI AND LIVEPERSON ARE URGED TO READ THE FORM S-4, THE PROXY STATEMENT/PROSPECTUS AND ANY OTHER RELEVANT DOCUMENTS FILED WITH THE SEC, AS WELL AS ANY AMENDMENTS OR SUPPLEMENTS TO THOSE DOCUMENTS, CAREFULLY IN THEIR ENTIRETY IF AND WHEN THEY BECOME AVAILABLE BECAUSE THEY WILL CONTAIN IMPORTANT INFORMATION ABOUT THE PROPOSED TRANSACTION. Investors and security holders will be able to obtain copies of these documents (if and when available), as well as other filings containing information about SoundHound AI and LivePerson, free of charge on the SEC’s website at www.sec.gov. Copies of the documents filed with,

or furnished to, the SEC by the Company will be available free of charge on SoundHound AI’s website at https://investors.soundhound.com/financial-information/sec-filings. Copies of the documents filed with, or furnished to, the SEC by LivePerson will be available free of charge on LivePerson’s website at https://ir.liveperson.com/financial-information/sec-filings. The information included on, or accessible through, SoundHound AI’s or LivePerson’s website is not incorporated by reference into this communication.

Participants in the Solicitation

SoundHound, LivePerson and their respective directors and executive officers may be deemed to be participants in the solicitation of proxies with respect to the proposed transaction under the rules of the SEC. Information about the directors and executive officers of SoundHound, including a description of their direct or indirect interests, by security holdings or otherwise, is set forth in SoundHound’s definitive proxy statement for its 2026 annual meeting of stockholders under the heading “Proposal 1 – Election of Directors”, which was filed with the SEC on April 9, 2026 and is available at https://www.sec.gov/ix?doc=/Archives/edgar/data/0001840856/000121390026041978/ea0285618-01.htm. Information about the directors and executive officers of LivePerson and their ownership of LivePerson equity interests can be found in the section entitled “Interests of LivePerson Directors and Executive Officers in the Mergers” and “Owners and Management of LivePerson” included in the proxy/prospectus, which was filed with the SEC on July 9, 2026 and is available at https://www.sec.gov/Archives/edgar/data/1102993/000121390026076759/ea0297465-01.htm. Further information about the directors and executive officers of LivePerson may be found in its amendment to its Annual Report on Form 10-K for the year ended December 31, 2025 under the headings “Directors, Executive Officers and Corporate Governance,” “Executive Compensation,” “Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters” and is available at: https://www.sec.gov/ix?doc=/Archives/edgar/data/0001102993/000110299326000020/lpsn-20251231.htm; in the Form 3 and Form 4 statements of beneficial ownership and statements of changes in beneficial ownership filed with the SEC by LivePerson’s directors and executive officers; and is in other documents filed by LivePerson with the SEC. Additional information regarding the interests of the participants in the solicitation of proxies will be included in other relevant materials to be filed with the SEC if and when they become available. You should read the Form S-4 and the proxy statement/prospectus carefully before making any voting or investment decisions. You may obtain free copies of these documents using the sources indicated above.