Charlton Aria Acquisition Corp

proxy statement of CHAR and a prospectus of KQC Parent. In connection with the Extension, CHAR intends to file a proxy statement with the SEC. After they have been filed and, where applicable, declared effective, the definitive proxy statements will be mailed to CHAR's shareholders as of the applicable record dates. SHAREHOLDERS OF CHAR AND OTHER INTERESTED PERSONS ARE URGED TO READ THESE DOCUMENTS, ANY AMENDMENTS TO THEM AND ANY OTHER RELEVANT DOCUMENTS FILED WITH THE SEC CAREFULLY AND IN THEIR ENTIRETY WHEN THEY BECOME AVAILABLE, BECAUSE THEY WILL CONTAIN IMPORTANT INFORMATION ABOUT CHAR, KQC, THE BUSINESS COMBINATION AND THE EXTENSION. These documents, once available, can be obtained free of charge at the SEC's website, www.sec.gov, or by request to Charlton Aria Acquisition Corporation, 221 W 9th St #848, Wilmington, DE 19801. Participation in the Solicitation CHAR, KQC and their respective directors and executive officers may be deemed participants in the solicitation of proxies from CHAR's shareholders in connection with the Business Combination and the Extension. Info about CHAR's directors and executive officers and their interests in CHAR is set out in CHAR's filings with the SEC. Add'l info about the interests of those participants will be included in the proxy statement/prospectus and the Extension proxy statement when available. No Offer or Solicitation This communication is for informational purposes only. It does not constitute an offer to sell, or the solicitation of an offer to buy, any securities, or a solicitation of any vote or approval, in any jurisdiction. No securities shall be offered or sold in any jurisdiction in which such offer, solicitation or sale would be unlawful before registration or qualification under the securities laws of that jurisdiction. No offer of securities shall be made except by means of a prospectus meeting the requirements of Section 10 of the Securities Act of 1933, as amended. No Incorporation by Reference The information contained in the third-party citations and websites referenced in this communication is not incorporated by reference into this communication. Trademarks This presentation contains trademarks, service marks, trade names and copyrights of KQC, CHAR, and other companies, each of which are the property of their respective owners. All third-party brand names and logos appearing in this presentation are trademarks or registered trademarks of their respective holders. All third-party names and logos are used for identification only and no endorsement is implied. Risk Factors For a description of certain risks relating to KQC, including its business and operations, and to the proposed transaction, we refer you to "Risk Factors" at the end of this presentation. Use of Data Information in this presentation is based on data and analyses from various sources as of October 6, 2026, unless otherwise indicated. References in this presentation to "$" are to the lawful currency of the United States. This presentation also contains estimates and other statistical data made by independent parties and by us relating to market size and growth and other industry data. These estimates and other statistical data involve a number of assumptions and limitations, and you are cautioned not to give undue weight to such estimates and other statistical data. We have not independently verified the statistical and other industry data generated by independent parties and contained in this presentation and, accordingly, we cannot guarantee their accuracy or completeness. In addition, expectations, assumptions, estimates and projections of the future performance of relevant markets in which KQC operates are necessarily subject to a high degree of uncertainty and risk. No Projections This presentation does not contain financial projections of KQC, KQC Parent or the combined company. Product development timelines, launch dates and other milestones described in this presentation are management targets only. They are subject to significant risks and uncertainties, may not be achieved and should not be relied on as forecasts of future performance. Back-tested or simulated results are hypothetical, do not represent actual client or investment performance and are not indicative of future results. Financial Information KQC's financial statements are not yet audited under PCAOB standards and may change materially. © 2026 KQC Quantum, Inc. 3

LEADERSHIP Executive Team Source: Company information Ji Hoon Kweon Executive Chairman Joon Young Kim Chief Executive Officer Stephen Oh Executive Vice President Chief Technology Officer Jaesun Jin Senior Vice President Chief Business Officer Changhoi Kim Senior Vice President Chief Revenue Officer Sehwan Han Vice President Chief Financial Officer • Former Korea Head of Sales and Trading, ABN AMRO • Former Head of Corporate Finance Practice, Arthur D. Little Korea • Former Director General of Investment Promotion, Busan Metropolitan City • B.A., Yonsei University; M.S. in Economics, Iowa State University • Former MD, Cross-border Transactions, Kudos Financial Group • Former Senior Economist, SK Telecom SUPEX Research Institute • Former research professor, University of Southern California • Ph.D. in Economics, Claremont Graduate University • Former Vice President, Samsung Electronics • Former Vice President, Denali Software • Ph.D. in EE, Purdue University • Former Head of Data & AI Sales, IBM Korea • Former CIO, UBASE; Enterprise Architect, LG CNS • Former Head of Data & AI / Automation, IBM Korea • Sales leadership, Tibco Korea and Oracle Korea • Certified Public Accountant, 22 years' experience • Former Ernst & Young Han Young - audit, internal control, SOX and M&A advisory © 2026 KQC Quantum, Inc. 4

TRANSACTION OVERVIEW Charlton Aria Acquisition Corporation (Nasdaq: CHAR) Paul Strickland, Chief Financial Officer Jung Min Lee, Chief Executive Officer • Former International Financial Advisor, Merrill Lynch • Co-founder of MiLinks • M.S. in Finance, Johns Hopkins University • Nearly three decades of international business experience • Founder of Selkirk Global Holdings • B.A., University of Puget Sound CHAR Management Umesh Patel Stephen Markscheid • Managing Partner of Aerion Capital, a boutique investment firm • Director of ConnectM Technology Solutions • Former Director of Monterey Capital Acquisition Corp. •