HA Sustainable Infrastructure Capital, Inc. (the Company) issued $400,000,000 aggregate principal amount of its 6.000% Green Senior Unsecured Notes due 2036 (the Notes). The Notes were issued under an Indenture dated June 24, 2025, as supplemented by an Officers Certificate dated March 2, 2026. The Notes bear interest at a rate of 6.000% per year, payable semi-annually in arrears on March 15 and September 15 of each year, commencing September 15, 2026. The Notes will mature on March 15, 2036, unless earlier repurchased or redeemed. The Notes are senior unsecured obligations of the Company and are guaranteed by Hannon Armstrong Sustainable Infrastructure, L.P., Hannon Armstrong Capital, LLC, HAT Holdings I LLC, HAT Holdings II LLC, HAC Holdings I LLC, and HAC Holdings II LLC (the Guarantors). The Company intends to use the net proceeds to temporarily repay outstanding borrowings under its unsecured revolving credit facility and commercial paper programs, or to redeem its 8.00% Senior Notes due 2027. Ultimately, the Company will use cash equal to the net proceeds to acquire, invest in, or refinance new and/or existing eligible green projects, including those with disbursements made within 12 months prior to the issue date or within two years following the issue date.