HEI Exhibit 99 NEWS RELEASE May 8, 2026 Contact: Mateo Garcia Telephone: (808) 543-7300 Director, Investor Relations E-mail: ir@hei.com HEI REPORTS FIRST QUARTER 2026 RESULTS HONOLULU - Hawaiian Electric Industries, Inc. (NYSE - HE) (HEI) today reported net income for the first quarter of 2026 of $30 million, or $0.18 per share, compared to net income of $27 million, or $0.15 per share in the first quarter of 2025. Excluding Maui wildfire-related expenses and expenses taken in connection with the review of ...