Radixx Announces Security Incident Impacting Radixx Res™

Sabre systems operate in a separate operational environment and ongoing investigation has found no impact to Sabre

SOUTHLAKE, Texas – Apr. 22, 2021 –Radixx, a subsidiary of Sabre Corporation (NASDAQ: SABR), that serves the low-cost airline carrier segment, today announced that Radixx Res™ has experienced an event impacting its Radixx reservation system. The company is in the process of restoring service to the approximately 20 Radixx airline customers affected by this event. On April 20, 2021, Radixx noticed unusual activity related to its Radixx Res™ application. An investigation indicated that malware on the Radixx system caused the activity. Radixx’s highest priority was to identify and contain any issues and to restore service as soon as possible. Radixx Res™ operates in its historical, dedicated datacenter, which is a separate operational environment from Sabre systems. Based on the investigation to date, Sabre’s systems, including its GDS, Airline IT, SabreSonic passenger service system and Hospitality Solutions systems, were not impacted. The company also noted its investigation indicates that the Radixx database containing customer information was not compromised in the event. The company is taking steps to stand up a new Radixx application server environment. The company expects to begin bringing Radixx Res™ customers back online beginning later today, with efforts continuing over the next several days. About Radixx Founded in 1993, Radixx, headquartered in Orlando, Florida, combines an innovative technology approach with unique partnership models enabling airlines of all sizes and business models to be effective retailers and efficient operators. Radixx caters to LCC and ULCC airlines, including the support of GDS distribution. Radixx offers an Internet Booking Engine, Radixx ezyCommerce™, a cloud-based Passenger Services System, Radixx Res™, and a leading Departure Services Suite, Radixx Go™, uniquely designed to enable airlines to increase their profitability and maximize productivity through expanded distribution services. Since 2016, Radixx has delivered its sixth-generation, micro-services-based passenger services system. For more information on Radixx, please visit www.radixx.com. About Sabre Corporation Sabre Corporation is a leading software and technology company that powers the global travel industry, serving a wide range of travel companies including airlines, hoteliers, travel agencies and other suppliers. The company provides retailing, distribution and fulfilment solutions that help its customers operate more efficiently, drive revenue and offer personalized traveler experiences. Through its leading travel marketplace, Sabre connects travel suppliers with buyers from around the globe. Sabre’s technology platform manages more than $260B worth of global travel spend annually. Headquartered in Southlake, Texas, USA, Sabre serves customers in more than 160 countries around the world. For more information visit www.sabre.com. Forward-Looking Statements Certain statements herein are forward-looking statements about trends, future events, uncertainties and our plans and expectations of what may happen in the future. Any statements that are not historical or current facts are forward-looking statements. In many cases, you can identify forward-looking statements by terms such as “expect,” “hope,” “future,” “believe,” “trend,” “pipeline,” “opportunity,” “plan,” “guidance,” “outlook,” “anticipate,” “will,” “forecast,” “continue,” “strategy,” “estimate,” “project,” “may,” “should,” “would,” “intend,” “potential,” or the negative of these terms or other comparable terminology. Forward-looking statements involve known and unknown risks, uncertainties and other factors that may cause actual results, performance or achievements to be materially different from any future results, performances or achievements expressed or implied by the forward-looking statements. The potential risks and uncertainties include, among others, the investigation, timing and effects of the event and related activities described above, the severity, extent and duration of the global COVID-19 pandemic and its impact on our business and results of operations, financial condition and credit ratings, as well as on the travel industry and consumer spending more broadly, the actions taken to contain the disease or treat its impact, the effectiveness and rate of vaccinations, the effect of remote working arrangements on our operations and the speed and extent of the recovery across the broader travel ecosystem, dependency on transaction volumes in the global travel industry, particularly air travel transaction volumes, including from airlines’ insolvency, suspension of service or aircraft groundings, the effect of cost savings initiatives, the timing, implementation and effects of the technology investment and other strategic initiatives, the completion and effects of travel platforms, travel suppliers’ usage of alternative distribution models, exposure to pricing pressure in the Travel Solutions business, changes affecting travel supplier customers, maintenance of the integrity of our systems and infrastructure and the effect of any security breaches, failure to adapt to technological advancements, competition in the travel distribution market and solutions markets, implementation of software solutions, reliance on third parties to provide information technology services and the effects of these services, the execution, implementation and effects of new, amended or renewed agreements and strategic partnerships, including anticipated savings, dependence on establishing, maintaining and renewing contracts with customers and other counterparties and collecting amounts due to us under these agreements, dependence on relationships with travel buyers, our collection, processing, storage, use and transmission of personal data and risks associated with PCI compliance, our ability to recruit, train and retain employees, including our key executive officers and technical employees, the financial and business results and effects of acquisitions, the effects of any litigation and regulatory reviews and investigations, adverse global and regional economic and political conditions, including, but not limited to, economic conditions in countries or regions with traditionally high levels of exports to China or that have commodities-based economies and the effect of “Brexit”, risks arising from global operations, reliance on the value of our brands, failure to comply with regulations, use of third-party distributor partners, the effects of the implementation of new accounting standards, and tax-related matters. More information about potential risks and uncertainties that could affect our business and results of operations is included in the “Risk Factors” and “Forward-Looking Statements” sections in Sabre’s Annual Report on Form 10-K filed with the SEC on February 25, 2021 and in its other filings with the SEC. Although we believe that the expectations reflected in the forward-looking statements are reasonable, we cannot guarantee future events, outlook, guidance, results, actions, levels of activity, performance or achievements. Readers are cautioned not to place undue reliance on these forward-looking statements. Unless required by law, Sabre undertakes no obligation to publicly update or revise any forward-looking statements to reflect circumstances or events after the date they are made. Contacts: Media Kristin Hays kristin.hays@sabre.com Heidi Castle heidi.castle@sabre.com sabrenews@sabre.com Investors Kevin Crissey kevin.crissey@sabre.com sabre.investorrelations@sabre.com