McKinley Acquisition Corp

proxy statement/prospectus and certain other related documents, which will serve as both the proxy statement to be distributed to its shareholders in connection with its solicitation for proxies for the vote by its shareholders in connection with the business combination and other matters to be described in the Registration Statement, as well as the prospectus relating to the offer and sale of the securities to be issued to Space-Eyes’ equity holders in connection with the completion of the business combination. After the Registration Statement is declared effective, McKinley will mail a definitive proxy statement and other relevant documents to its shareholders as of the record date established for voting on the business combination. This communication is not a substitute for the Registration Statement, the definitive proxy statement/prospectus or any other document that McKinley will send to its shareholders in connection with the business combination.

INVESTORS AND SECURITY HOLDERS ARE ADVISED TO READ, WHEN AVAILABLE, THE REGISTRATION STATEMENT, PROXY STATEMENT/PROSPECTUS AND ANY OTHER RELEVANT DOCUMENTS FILED WITH THE SEC CAREFULLY AND IN THEIR ENTIRETY IF AND WHEN THEY BECOME AVAILABLE BECAUSE THEY WILL CONTAIN IMPORTANT INFORMATION ABOUT THE BUSINESS COMBINATION AND THE PARTIES TO THE BUSINESS COMBINATION. Investors and security holders will be able to obtain copies of these documents (if and when available) and other documents filed with the SEC free of charge at www.sec.gov. The definitive proxy statement/final prospectus (if and when available) will be mailed to shareholders of McKinley as of a record date to be established for voting on the business combination. Shareholders of McKinley will also be able to obtain copies of the proxy statement/prospectus without charge, once available, at the SEC’s website at www.sec.gov.

Participants in the Solicitation

McKinley and its directors, executive officers, and other members of management, and consultants may, under SEC rules, be deemed to be participants in the solicitation of proxies from McKinley’s shareholders with respect to the business combination. A list of the names of those directors and executive officers and a description of their interests in McKinley is contained in the sections entitled “Security Ownership of Certain Beneficial Owners and Management and Related Shareholder Matters” and “Directors, Executive Officers and Corporate Governance” of McKinley’s Annual Report on Form 10-K for the fiscal year ended December 31, 2025, filed with the SEC on February 27, 2026, and which is available free of charge at the SEC’s website at www.sec.gov.

Additional information regarding the interests of such participants will be contained in the Registration Statement when available.

Space-Eyes, its directors, executive officers, other members of management, and employees, under SEC rules, may be deemed participants in the solicitation of proxies of McKinley’s shareholders in connection with the business combination. A list of the names of such directors and executive officers and information regarding their interests in the business combination will be included in the Registration Statement when available.

No Offer or Solicitation

This communication is for informational purposes only and is not (i) an offer to purchase, nor a solicitation of an offer to sell, subscribe for or buy any securities, nor shall there be any sale, issuance or transfer of securities in any jurisdiction in contravention of applicable law nor (ii) the solicitation of any vote in any jurisdiction pursuant to the business combination or otherwise. No offer of securities shall be made except by means of a prospectus meeting the requirements of Section 10 of the Securities Act. No securities commission or securities regulatory authority in the United States or any other jurisdiction has in any way passed upon the merits of the business combination or the accuracy or adequacy of this communication. INVESTMENT IN ANY SECURITIES DESCRIBED HEREIN HAS NOT BEEN APPROVED BY THE SEC OR ANY OTHER REGULATORY AUTHORITY NOR HAS ANY AUTHORITY PASSED UPON OR ENDORSED THE MERITS OF THE OFFERING OR THE ACCURACY OR ADEQUACY OF THE INFORMATION CONTAINED HEREIN. ANY REPRESENTATION TO THE CONTRARY IS A CRIMINAL OFFENSE.

Investor Contact:

Mike Cummings

Alpha IR Group

617.461.1101

CUAS@alpha-ir.com

Media Contact:

James McCusker

Alpha Advisory Group

203.585.4750

CUAS@alpha-ir.com