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Condensed Consolidated Statements of Changes in Common Stock Equity (unaudited) - HECO - USD ($) $ in Thousands | Total | Hawaiian Electric Company, Inc. and Subsidiaries | Common stock | Common stock Hawaiian Electric Company, Inc. and Subsidiaries | Premium on capital stock Hawaiian Electric Company, Inc. and Subsidiaries | Retained earnings | Retained earnings Hawaiian Electric Company, Inc. and Subsidiaries | Accumulated other comprehensive income (loss) | Accumulated other comprehensive income (loss) Hawaiian Electric Company, Inc. and Subsidiaries
--- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Beginning balance (in shares) at Dec. 31, 2022 |  |  | 109,471,000 | 17,854,000 |  |  |  |  |
Beginning balance at Dec. 31, 2022 | $ 2,202,499 | $ 2,344,170 | $ 1,692,697 | $ 119,048 | $ 810,955 | $ 845,830 | $ 1,411,306 | $ (336,028) | $ 2,861
Increase (decrease) in stockholders' equity |  |  |  |  |  |  |  |  |
Net income for common stock | 54,721 | 47,009 |  |  |  | 54,721 | 47,009 |  |
Other comprehensive (loss) income, net of tax benefits | 20,488 | (45) |  |  |  |  |  | 20,488 | (45)
Common stock dividends | (39,446) | (32,250) |  |  |  | (39,446) | (32,250) |  |
Ending balance (in shares) at Mar. 31, 2023 |  |  | 109,572,000 | 17,854,000 |  |  |  |  |
Ending balance at Mar. 31, 2023 | $ 2,237,955 | 2,358,884 | $ 1,692,390 | $ 119,048 | 810,955 | 861,105 | 1,426,065 | (315,540) | 2,816
Beginning balance (in shares) at Dec. 31, 2023 | 110,151,798 |  | 110,152,000 | 17,854,000 |  |  |  |  |
Beginning balance at Dec. 31, 2023 | $ 2,344,841 | 2,409,110 | $ 1,707,471 | $ 119,048 | 810,955 | 926,720 | 1,476,258 | (289,350) | 2,849
Increase (decrease) in stockholders' equity |  |  |  |  |  |  |  |  |
Net income for common stock | 42,122 | 39,221 |  |  |  | 42,122 | 39,221 |  |
Other comprehensive (loss) income, net of tax benefits | $ (9,801) | (49) |  |  |  |  |  | (9,801) | (49)
Common stock dividends |  | (13,000) |  |  |  |  | (13,000) |  |
Ending balance (in shares) at Mar. 31, 2024 | 110,302,667 |  | 110,303,000 | 17,854,000 |  |  |  |  |
Ending balance at Mar. 31, 2024 | $ 2,377,380 | $ 2,435,282 | $ 1,707,689 | $ 119,048 | $ 810,955 | $ 968,842 | $ 1,502,479 | $ (299,151) | $ 2,800

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