Ms. Megan Hunter reports

CAPSTONE INFRASTRUCTURE CORPORATION PROVIDES NOTICE OF DIVIDEND RATES ON CUMULATIVE 5-YEAR RATE RESET PREFERRED SHARES, SERIES A AND CUMULATIVE FLOATING RATE PREFERRED SHARES, SERIES B

Further to Capstone Infrastructure Corp.'s news release dated June 10, 2026, Capstone announced today the applicable dividend rates for its cumulative five-year rate reset preferred shares, Series A, and cumulative floating rate preferred shares, Series B, that will take effect on July 31, 2026.

With respect to any Series A shares that remain outstanding after July 31, 2026 (when, subject to the terms of the corporation's articles, holders of Series A shares who elect to exchange some or all of their Series A shares for Series B shares will have such shares exchanged), holders of Series A shares will be entitled to receive quarterly fixed cumulative preferential cash dividends, if, as and when declared by the board of directors of Capstone. The dividend rate for the five-year period from and including July 31, 2026, to but excluding July 31, 2031, will be 5.788 per cent per annum, being equal to the five-year government of Canada bond yield determined as of today plus 2.71 per cent, in accordance with the terms of the Series A shares.

With respect to any Series B shares that may be issued on the conversion date, holders thereof will be entitled to receive quarterly floating rate cumulative preferential cash dividends, if, as and when declared by the board of directors of Capstone. The dividend rate for the three-month period from and including July 31, 2026, to but excluding Oct. 31, 2026, will be 4.994 per cent per annum, being equal to the three-month government of Canada treasury bill yield per annum determined as of today plus 2.71 per cent, with the amount of any quarterly dividend calculated based on the actual number of days in such quarterly period divided by 365, in accordance with the terms of the Series B shares.

Beneficial owners of Series A shares who wish to exercise their conversion right should communicate with their broker or other nominee to ensure their instructions are followed so that the registered holder of the Series A shares can meet the deadline to exercise such conversion right, which is 5 p.m. (Toronto time) on July 15, 2026.

About Capstone Infrastructure Corp.

Capstone is generating our low-carbon future, driving the energy transition forward through creative thinking, strong partnerships, and a commitment to quality and integrity in how we do business. A developer, owner, and operator of clean and renewable energy projects across North America, Capstone's portfolio includes approximately 1.1-gigawatt gross installed capacity across 36 facilities, including wind, solar, hydro, biomass and natural gas power plants.

We seek Safe Harbor.