SES AI Corporation (NYSE: SES), headquartered in Boston, a global leader in the development and manufacturing of high-performance lithium-metal (Li-Metal) rechargeable batteries for electric vehicles (EVs) and other applications, today announced it is set to join the broad-market Russell 3000^® Index. SES will be added at the conclusion of the 2023 Russell indexes annual reconstitution, effective after the US market opens on June 26, according to a preliminary list of additions posted by FTSE Russell May 19.

The annual Russell reconstitution captures the 4,000 largest US stocks as of April 28, ranking them by total market capitalization. Membership in the US all-cap Russell 3000^® Index, which remains in place for one year, means automatic inclusion in the large-cap Russell 1000^® Index or small-cap Russell 2000^® Index as well as the appropriate growth and value style indexes. FTSE Russell determines membership for its Russell indexes primarily by objective, market-capitalization rankings and style attributes.

Russell indexes are widely used by investment managers and institutional investors for index funds and as benchmarks for active investment strategies. Approximately $12.1 trillion in assets are benchmarked against Russell’s US indexes. Russell indexes are part of FTSE Russell, a leading global index provider.

For more information on the Russell 3000^® Index and the Russell indexes reconstitution, go to the “Russell Reconstitution” section on the FTSE Russell website.

About SES

SES is a global leader in development and production of high-performance Li-Metal rechargeable batteries for EVs and other applications. Founded in 2012, SES is an integrated Li-Metal battery manufacturer with strong capabilities in material, cell, module, AI-powered safety algorithms and recycling. Formerly known as SolidEnergy Systems, SES is headquartered in Boston and has operations in Singapore, Shanghai, and Seoul.

SES may use its website as a distribution channel of material company information. Financial and other important information regarding SES is routinely posted on and accessible through the Company’s website at www.ses.ai. Accordingly, investors should monitor this channel, in addition to following SES’s press releases, Securities and Exchange Commission filings and public conference calls and webcasts.

About FTSE Russell

FTSE Russell is a global index leader that provides innovative benchmarking, analytics and data solutions for investors worldwide. FTSE Russell calculates thousands of indexes that measure and benchmark markets and asset classes in more than 70 countries, covering 98% of the investable market globally. FTSE Russell index expertise and products are used extensively by institutional and retail investors globally. Approximately $20.1 trillion is currently benchmarked to FTSE Russell indexes. For over 30 years, leading asset owners, asset managers, ETF providers and investment banks have chosen FTSE Russell indexes to benchmark their investment performance and create ETFs, structured products and index-based derivatives.

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