William Lyon Homes Set to Join S&P SmallCap 600®

William Lyon Homes (the “Company”) (NYSE: WLH) announced that it will join the S&P SmallCap 600® effective Monday, March 6, 2017, prior to the market open.

“We are extremely proud to be included in the S&P SmallCap 600, another significant milestone for the Company,” said Matthew R. Zaist, President and Chief Executive Officer. “With this honor, we welcome the increased exposure to investors in the United States and around the world, as we continue in 2017 to build upon the growth we’ve experienced since our Initial Public Offering in 2013.”

The S&P SmallCap 600 is designed to measure the performance of 600 public companies in the U.S., and taken together with the S&P 500® and the S&P MidCap 400® form the S&P Composite 1500®. Currently, the mean market capitalization in the S&P SmallCap 600 is approximately $1.3 billion, with the largest constituent having a market capitalization of just over $5.7 billion.

About William Lyon Homes

William Lyon Homes is one of the largest Western U.S. regional homebuilders. Headquartered in Newport Beach, California, the Company is primarily engaged in the design, construction, marketing and sale of single-family detached and attached homes in California, Arizona, Nevada, Colorado, Washington and Oregon. Its core markets include Orange County, Los Angeles, the Inland Empire, the San Francisco Bay Area, Phoenix, Las Vegas, Denver, Portland and Seattle. The Company has a distinguished legacy of more than 60 years of homebuilding operations, over which time it has sold in excess of 99,000 homes. The Company markets and sells its homes under the William Lyon Homes brand in all of its markets except for Colorado, where the Company operates under the Village Homes brand, and Washington and Oregon, where the Company operates under the Polygon Northwest brand.

About S&P Dow Jones Indices

S&P Dow Jones Indices is the largest global resource for essential index-based concepts, data and research, and home to iconic financial market indicators, such as the S&P 500 and the Dow Jones Industrial Average®. More assets are invested in products based on these indices than based on any other provider in the world. With over 1,000,000 indices and more than 120 years of experience constructing innovative and transparent solutions, S&P Dow Jones Indices defines the way investors measure and trade the markets. S&P Dow Jones Indices is a division of S&P Global (NYSE: SPGI), which provides essential intelligence for individuals, companies, and governments to make decisions with confidence. For more information about S&P Dow Jones Indices, please visit www.spdji.com.

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Investor RelationsFinancial Profiles, Inc.Larry Clark, [e-mail]