Investor webcast available October 8, 2026, at 10:30 a.m. Eastern Time

KQC Quantum, Inc. ("KQC Parent"), the Delaware parent company of Korea Quantum Computing Co., Ltd. ("KQC" or the "Company"), which helps enterprises adopt quantum computing and quantum-safe security, and Charlton Aria Acquisition Corporation (NASDAQ:CHAR) ("Charlton Aria"), a publicly traded special purpose acquisition company, today announced that an investor webcast reviewing their recently announced proposed business combination will be available beginning today, October 8, 2026, at 10:30 a.m. Eastern Time.

The webcast will feature remarks from Ji Hoon Kweon, Chairman of KQC; Joon Young Kim, Chief Executive Officer of KQC; and Paul Strickland, Chief Financial Officer of Charlton Aria. The presentation will cover KQC’s quantum computing and quantum-safe security offerings, customer projects, commercialization strategy and terms of the proposed business combination.

Webcast Details

Date: October 8, 2026

Time: 10:30 a.m. Eastern Time / 7:30 a.m. Pacific Time

Access: HERE

An on-demand replay of the webcast and the accompanying investor presentation will be available on the Investor Relations section of KQC’s website at www.kqcquantum.com.

As announced on October 7, 2026, KQC Parent and Charlton Aria entered into a definitive business combination agreement. Upon completion of the proposed transaction, Charlton Aria will become a wholly owned subsidiary of KQC Parent, with shares of common stock of the combined company expected to trade on Nasdaq under the ticker symbol "KQC." The transaction is expected to close in the first half of 2027, subject to approval by Charlton Aria shareholders, an extension of Charlton Aria’s business combination deadline and other closing conditions.

About KQC

KQC Quantum Inc. is the Delaware parent company of Korea Quantum Computing Co., Ltd., which was founded in 2021 and is headquartered in Busan, South Korea, with an office in Seoul. KQC helps enterprises put quantum computing and quantum-safe security to work. Its Qubiteer platform uses AI to turn business problems into models that can be solved with classical, quantum or hybrid methods; KQC provides access to multiple quantum technologies, including systems from D-Wave; and it supplies and integrates post-quantum cryptography products for financial, industrial and public-sector customers. For more information, visit www.kqcquantum.com.

About Charlton Aria Acquisition Corporation

Charlton Aria Acquisition Corporation (NASDAQ:CHAR) is a blank check company incorporated in the Cayman Islands as an exempted company with limited liability for the purpose of effecting a merger, share exchange, asset acquisition, share purchase, recapitalization, reorganization or similar business combination with one or more businesses or entities.

Important Information About the Proposed Transaction and Where to Find It

In connection with the Business Combination, KQC intends to file a registration statement on Form S-4 with the U.S. Securities and Exchange Commission (the "SEC"). The registration statement will include a proxy statement of CHAR and a prospectus of KQC. 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, or by request to Charlton Aria Acquisition Corporation, 221 W 9th St #848, Wilmington, DE 19801

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.

Full disclosure available at: www.kqcquantum.com

Participants in 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. Information about CHAR's directors and executive officers and their interests in CHAR is set out in CHAR's filings with the SEC. Additional information about the interests of those participants will be included in the proxy statement/prospectus and the Extension proxy statement when available.

Forward-Looking Statements

This communication contains "forward-looking statements" within the meaning of the U.S. federal securities laws. These include statements about the proposed business combination (the "Business Combination") between Charlton Aria Acquisition Corporation ("CHAR") and KQC Quantum, Inc. ("KQC"), the expected timing of the Business Combination, the proposed extension of CHAR's deadline to complete a business combination (the "Extension"), the anticipated benefits of the Business Combination, and KQC's business strategy, products, customer projects, commercial milestones and future operations. Forward-looking statements can generally be identified by words such as "believe," "expect," "intend," "plan," "anticipate," "may," "will," "should," "could," "would," "potential," "seek," "target," "aim" and similar expressions. These statements are based on current expectations and assumptions and are subject to risks and uncertainties, many of which are outside the parties' control. Actual results may differ materially.

Factors that could cause actual results to differ include, among others:

the risk that the Business Combination is not completed on time or at all;
failure to obtain the approval of CHAR's shareholders for the Business Combination or the Extension
the level of redemptions by CHAR's public shareholders and the amount of cash available at closing;
failure to satisfy the minimum cash condition or any other closing condition;
failure to obtain or maintain the listing of the combined company's securities on Nasdaq;
KQC's ability to commercialize its products and convert pilots and proofs of concept into production deployments and recurring revenue;
the early stage of development of the quantum computing and post-quantum security markets;
competition, technological change and reliance on third-party hardware and partners;
regulatory matters in the Republic of Korea and the United States;
the costs of the Business Combination and of operating as a public company; and
the other risks to be described in the registration statement on Form S-4 and CHAR's filings with the SEC.

Forward-looking statements speak only as of the date they are made. Except as required by law, neither CHAR nor KQC undertakes any obligation to update or revise them.

View source version on businesswire.com: https://www.businesswire.com/news/home/20261008910978/en/

Charlton Aria Acquisition Corporation

Paul Strickland, Chief Financial Officer

paul@charltonaria.com

KQC Investor Relations

Chris Mammone

Managing Director, The Blueshirt Group

ir@kqcquantum.com

KQC Media Relations (U.S.)

Joon Young Kim, Chief Executive Officer

Jeehun Hwang, Senior Technical Advisor

press@kqcquantum.com