HASI Set to Join S&P SmallCap 600

Hannon Armstrong Sustainable Infrastructure Capital, Inc. ("HASI," "We," "Our" or the "Company") (NYSE: HASI), a leading investor in climate solutions, today announced that the Company will be added to the S&P SmallCap 600 Index, effective prior to the open of trading on Monday, September 18, 2023.

"We are proud to be included in the S&P SmallCap 600, another significant milestone for the Company," said Jeffrey A. Lipson, President and CEO of HASI. "We expect this inclusion will increase our visibility within the investment community and the liquidity of our shares as we continue to execute on our climate positive vision and growth strategy."

The S&P SmallCap 600 Index is a stock market index established by Standard & Poor's that is designed to measure the performance of the small-cap segment of the market and is composed of 600 constituent companies in the U.S. equities market. The index is designed to track companies that meet specific inclusion criteria to ensure that they are liquid and financially viable. For more information on the S&P SmallCap 600 and S&P Dow Jones Indices, please visit www.spdji.com.

About HASI

HASI (NYSE: HASI) is a leading climate positive investment firm that actively partners with clients to deploy real assets that facilitate the energy transition. With more than $10 billion in managed assets, our vision is that every investment improves our climate future. For more information, please visit hasi.com.

Forward-Looking Statements

Some of the information contained in this press release is forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended that are subject to risks and uncertainties. For these statements, we claim the protections of the safe harbor for forward-looking statements contained in such Sections. These forward-looking statements include information about possible or assumed future results of our business, financial condition, liquidity, results of operations, plans and objectives. When we use the words "believe," "expect," "anticipate," "estimate," "plan," "continue," "intend," "should," "may" or similar expressions, we intend to identify forward-looking statements.

Forward-looking statements are subject to significant risks and uncertainties. Investors are cautioned against placing undue reliance on such statements. Actual results may differ materially from those set forth in the forward-looking statements. Factors that could cause actual results to differ materially from those described in the forward-looking statements include those discussed under the caption "Risk Factors" included in our most recent Annual Report on Form 10-K as well as in other periodic reports that we file with the U.S. Securities and Exchange Commission

Forward-looking statements are based on beliefs, assumptions and expectations as of the date of this press release. We disclaim any obligation to publicly release the results of any revisions to these forward-looking statements reflecting new estimates, events or circumstances after the date of this press release.