Item 2. Properties

Our headquarters is located at 1331 L Street, NW, in downtown Washington, DC, where we occupy approximately 149,500 square feet of office space. Our lease for our headquarters expires May 31, 2025 (with two 5-year renewal options). Our principal facility in the U.K. is located in London, England, where we occupy approximately 7,000 square feet of office space. Our lease for this facility has a maximum term ending July 8, 2023, with early termination at our option on July 9, 2018, with advance notice. This facility is used primarily by our International segment.

In addition to our two downtown Washington, DC leased facilities and our London, England facility, our research operations are principally run out of leased spaces in San Diego, California; Columbia, Maryland; Atlanta, Georgia; Glasgow, Scotland; and Paris, France. Additionally, we lease office space in a variety of other metropolitan areas. These locations include, without limitation, the following: New York; Los Angeles; Chicago; San Francisco; Sacramento; Boston; Orange County, California; Philadelphia; Houston; Phoenix; Detroit; Pittsburgh; Miami; Orlando; Denver; Dallas; Kansas City; Cleveland; Cincinnati; Indianapolis; Austin; Salt Lake City; Las Vegas; Seattle; Portland; St. Louis; Glendora, California; San Luis Obispo, California; Charlotte; Durham, North Carolina; Manchester, England and Toronto, Canada.

We believe these facilities are suitable and appropriately support our business needs.