Reg FD Disclosure

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report: December 11, 2023 Exact Name of Registrant Commission I.R.S. Employer as Specified in Its Charter File Number Identification No. Hawaiian Electric Industries, Inc. 1-8503 99-0208097 Hawaiian Electric Company, Inc. 1-4955 99-0040500 State of Hawaii (State or other jurisdiction of incorporation)   1001 Bishop Street, Suite 2900 , Honolulu , Hawaii   96813 - Hawaiian Electric Industries, Inc. (HEI) 1099 Alakea Street, Suite 2200 , Honolulu , Hawaii   96813 - Hawaiian Electric Company, Inc. (Hawaiian Electric) (Address of principal executive offices and zip code)  Registrant’s telephone number, including area code:  ( 808 ) 543-5662 - HEI ( 808 ) 543-7771 - Hawaiian Electric   Not applicable (Former name or former address, if changed since last report.)   Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions: ☐     Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) ☐     Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) ☐     Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) ☐     Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c)) Securities registered pursuant to 12(b) of the Act: Registrant Title of each class Trading Symbol(s) Name of each exchange on which registered Hawaiian Electric Industries, Inc. Common Stock, Without Par Value HE New York Stock Exchange Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule12b-2 of the Securities Act of 1934 (§240.12b-2 of this chapter). Emerging growth company Hawaiian Electric Industries, Inc. ☐ Hawaiian Electric Company, Inc. ☐ If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. Hawaiian Electric Industries, Inc. ☐ Hawaiian Electric Company, Inc. ☐ Item 7.01 Regulation FD Disclosure. On December 11, 2023, Hawaiian Electric Company, Inc. issued the news release, "Hawaiian Electric's Waiau repower project selected," furnished as Exhibit 99 to this Form 8-K. Item 9.01 Financial Statements and Exhibits. (d) Exhibits Exhibit 99 Hawaiian Electric's Waiau repower project selected 104 Cover Page Interactive Data File (embedded within the Inline XBRL document) The information furnished in connection with this current report on Form 8-K shall not be deemed "filed" for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the Exchange Act), or incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act, except as shall be expressly set forth by specific reference in such a filing. 1 SIGNATURES      Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrants have duly caused this report to be signed on their behalf by the undersigned thereunto duly authorized. The signature of the undersigned companies shall be deemed to relate only to matters having reference to such companies and any subsidiaries thereof. HAWAIIAN ELECTRIC INDUSTRIES, INC. HAWAIIAN ELECTRIC COMPANY, INC. (Registrant) (Registrant) /s/ Scott T. DeGhetto /s/ Paul K. Ito Scott T. DeGhetto Paul K. Ito Executive Vice President, Senior Vice President, Chief Financial Officer and Treasurer Chief Financial Officer and Treasurer Date: December 11, 2023 Date: December 11, 2023 2