HUANENG POWER (00902) A-share trading abnormal fluctuations do not exist major issues that should be disclosed but have not been disclosed.

HUANENG POWER (00902) announced that the closing prices of the company's A shares on May 28, May 29, and June 1, 2026, had deviated by more than 20% for three consecutive trading days, constituting abnormal stock trading fluctuations as stipulated by the "Shanghai Stock Exchange Trading Rules". After conducting a self-examination and verifying with the controlling shareholder's controlling shareholder, as of the date of this announcement, the company's production and operations are normal, and there are no significant issues that should be disclosed but have not been disclosed. In the first quarter of 2026, the company achieved a net profit attributable to shareholders of listed companies of approximately RMB 4.484 billion, a decrease of 9.83% compared to the same period last year, mainly due to the comprehensive impact of the year-on-year decrease in domestic power generation and average on-grid settlement electricity prices, as well as a decrease in fuel costs. Investors are advised to pay attention to the risks of fluctuations in the company's performance, make decisions prudently, and invest rationally.