Company Update

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 (Date of earliest event reported): May 7, 2024 ​ ​ ​ ​ ​ ​ ​ ​ Commission File Number      Exact Name of Registrant as specified in its charter      State or Other Jurisdiction of Incorporation or Organization      IRS Employer Identification Number 1-2313 ​ SOUTHERN CALIFORNIA EDISON COMPANY ​ California ​ 95-1240335 ​ ​ ​ ​ 2244 Walnut Grove Avenue (P.O. Box 800) Rosemead , California 91770 (Address of principal executive offices) ( 626 ) 302-1212 ​ (Registrant's telephone number, including area code) ​ 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 Section 12(b) of the Act: None 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 Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter). Emerging growth company ☐ 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. ☐ ​ ​ ​ ​ Item 8.01             Other Events On May 7, 2024, SCE Trust VIII, a statutory trust formed under the laws of the State of Delaware (the “Trust”) by Southern California Edison Company (the “Company”) agreed to sell 14,000,000 of the Trust ’ s 6.95% Trust Preference Securities, liquidation amount of $25 per such security (the “Trust Preference Securities”), representing undivided beneficial ownership interests in the assets of the Trust. The Trust Preference Securities are guaranteed by the Company on a subordinated basis (the “Guarantee”). The proceeds from the sale of the Trust Preference Securities, together with the proceeds from the sale by the Trust of its common securities to the Company, were used by the Trust to purchase shares of the Company's Series N Preference Stock (the “Preference Shares”). The offering relates to the registration statement on Form S-3 filed by the Company and the Trust (File No. 333-258266). The offering is more fully described in the prospectus dated May 7, 2024 and filed with the Securities and Exchange Commission on May 8, 2024. Item 9.01             Financial Statements and Exhibits (d)         Exhibits See the Exhibit Index below. EXHIBIT INDEX ​ ​ ​ Exhibit No .      Description ​ ​ ​ 1.1 ​ Underwriting Agreement among the Company, the Trust and the underwriters named therein dated as of May 7, 2024 ​ ​ ​ 4.1 ​ Certificate of Determination of Preferences of the Company’s Series N Preference Stock ​ ​ ​ 4.2 ​ Amended and Restated Declaration of Trust of SCE Trust VIII, dated May 13, 2024, among the Company (as Sponsor), The Bank of New York Mellon Trust Company, N.A. (as Institutional Trustee), BNY Mellon Trust of Delaware (as Delaware Trustee) and the Administrative Trustees named therein ​ ​ ​ 4.3 ​ Guarantee Agreement, dated May 13, 2024, by the Company ​ ​ ​ 4.4 ​ Specimen Trust Preferred Security Certificate (included in 4.2) ​ ​ ​ 5.1 ​ Opinion of Richards, Layton & Finger, P.A., dated May 13, 2024, regarding validity of the Trust Preference Securities (including the consent of such counsel) ​ ​ ​ 5.2 ​ Opinion of Michael A. Henry, dated May 13, 2024, regarding validity of the Series N Preference Shares (including the consent of such counsel) ​ ​ ​ 5.3 ​ Opinion of Baker & McKenzie LLP, dated May 13, 2024, regarding the validity of the Guarantee (including the consent of such counsel) ​ ​ ​ 8.1 ​ Opinion of Baker & McKenzie LLP, dated May 13, 2024, regarding certain tax matters (including the consent of such counsel) ​ ​ ​ 104 ​ Cover Page Interactive Data File (embedded within the Inline XBRL document) ​ ​ SIGNATURES Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized. ​ ​ ​ SOUTHERN CALIFORNIA EDISON COMPANY ​ (Registrant) ​ ​ ​ /s/ Natalia Woodward ​ Natalia Woodward ​ Vice President and Treasurer ​ ​ Date: May 13, 2024 ​ ​ ​ ​ ​ ​