RTX Corp

Item 8.01. Other Events. On September 19, 2025, RTX Corporation (the “ Company ”) became aware of a product cybersecurity incident involving ransomware on systems that support its Multi-User System Environment (“ MUSE ”) passenger processing software. This software enables multiple airlines to share check-in and gate resources at airports, including baggage handling. The MUSE airport systems operate outside of the RTX enterprise network, residing on customer-specific networks. Upon detecting the incident, the Company activated its incident response plan and promptly took steps to assess, contain, respond to and remediate the incident. The Company is diligently investigating the incident with the assistance of internal and external cybersecurity experts and has notified domestic and international law enforcement authorities and certain other government agencies. The Company is also communicating with its customers and other stakeholders and providing technical support and guidance to affected airlines and airports. Our customers have shifted to back-up or manual processes and have experienced certain flight delays and cancellations. While our investigation and assessment of this product cybersecurity incident is ongoing, it has not had a material impact and is not reasonably expected to have a material impact, on the Company’s financial condition, business operations or results of operations. Cautionary Statement Regarding Forward-Looking Statements This Current Report on Form 8-K contains statements which, to the extent they are not statements of historical or present fact, constitute “forward-looking statements” under the securities laws. These forward-looking statements are intended to provide management’s current expectations or plans for our future operating and fin