In this Annual Report on Form 10-K, unless the context otherwise requires, references to “Realty Income,” the “Company,” “we,” “our” or “us” refer to Realty Income Corporation and our subsidiaries. THE COMPANY Realty Income (NYSE: O), an S&P 500 company, is real estate partner to the world's leading companies ® . Founded in 1969, we serve our clients as a full-service real estate capital provider. As of December 31, 2025, we have a portfolio of over 15,500 properties in all 50 states of the United States ("U.S."), the United Kingdom ("U.K."), and eight other countries in Europe. We are known as “The Monthly Dividend Company ® ” and have a mission to invest in people and places to deliver dependable monthly dividends that increase over time. Since our listing on the NYSE in 1994, we have had 133 dividend increases and are a member of the S&P 500 Dividend Aristocrats ® index for having increased our dividend for over 31 consecutive years.