Kilroy Realty Corporation is a publicly traded real estate investment trust (REIT) headquartered in Los Angeles, California. The company focuses on the development, acquisition, and management of premier office, life science, and mixed-use properties primarily located in major West Coast innovation hubs, including Los Angeles, San Diego, the San Francisco Bay Area, Greater Seattle, and Austin, Texas. Kilroy Realty is distinctive for its strong commitment to sustainability, frequently earning industry accolades for its green building certifications and energy-efficient operations.
Kilroy Realty derives approximately 98.3% of its revenues from rental income and leases primarily to top global technology, life science and healthcare, and media companies. Technology companies accounted for 51% of office portfolio annualized base rental revenues (ABR) as of December 31, 2025. Its 20 largest tenants together represented 53.7% of total ABR and 40.5% of total rentable square feet as of December 31, 2025; the single largest tenant (an unnamed global technology company in Seattle/San Diego) accounted for 5.9% of ABR, followed by Cruise LLC (4.6%), Stripe (4.3%), Adobe (3.7%), and Salesforce (3.2%). Other significant tenants in the top 20 include Okta, DoorDash, Netflix, Cytokinetics, Box, DIRECTV, Tandem Diabetes Care, Synopsys, Neurocrine Biosciences, Viacom, Indeed, Sony, Amazon.com, Nektar Therapeutics, and Splunk. All of the company's properties are located in California, Washington, Texas, and Oregon markets, with concentration heightened by its single reportable segment.