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Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington , D.C. 20549 FORM 10 - Q ( Mark One ) QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15 ( d ) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31 , 2021 TRANSITION REPORT PURSUANT TO SECTION 13 OR 15 ( d ) OF THE SECURITIES EXCHANGE □ ACT OF 1934 For the transition period from to Commission File Number 1-9936 1-2313 Exact Name of Registrant as specified in its charter EDISON INTERNATIONAL SOUTHERN CALIFORNIA EDISON COMPANY EDISON INTERNATIONAL 2244 Walnut Grove Avenue ( P.O. Box 976 ) Rosemead , California 91770 ( Address of principal executive offices ) ( 626 ) 302-2222 ( Registrant's telephone number , including area code ) State or Other Jurisdiction of Incorporation or Organization California California IRS Employer Identification Number 95-4137452 95-1240335 SOUTHERN CALIFORNIA EDISON COMPANY 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 ) Securities registered pursuant to Section 12 ( b ) of the Act : Edison International : Title of each class Common Stock , no par value Trading Symbol ( s ) ΕΙΧ Name of each exchange on which registered NYSE LLC Southern California Edison Company : None . Indicate by check mark whether the registrant ( 1 ) has filed all reports required to be filed by Section 13 or 15 ( d ) of the Securities Exchange Act of 1934 during the preceding 12 months ( or for such shorter period that the registrant was required to file such reports ) , and ( 2 ) has been subject to such filing requirements for the past 90 days . Edison International Yes No □ Yes No Southern California Edison Company Yes No Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S - T during the preceding 12 months ( or for such shorter period that the registrant was required to submit such files ) . Edison International Southern California Edison Company Yes No □ Indicate by check mark whether the registrant is a large accelerated filer , an accelerated filer , a non - accelerated filer , smaller reporting company , or an emerging growth company . See the definitions of " large accelerated filer , " accelerated filer , " " smaller reporting company , " and " emerging growth company " in Rule 12b - 12 of the Exchange Act . Smaller Reporting Company Edison International Large Accelerated Filer Accelerated Filer Non - accelerated Filer 図 ☐ ☐ ☐ Southern California Edison Company Large Accelerated Filer Accelerated Filer Non - accelerated Filer ☐ ㅁ ✓ ☐ Smaller Reporting Company Emerging growth company ☐ 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 . Edison International ☐ Southern California Edison Company Indicate by check mark whether the registrant is a shell company ( as defined in Rule 12b - 2 of the Exchange Act ) . Edison International Yes No Southern California Edison Company Yes No Indicate the number of shares outstanding of each of the issuer's classes of common stock , as of the latest practicable date : ☐ Common Stock outstanding as of April 20 , 2021 : Edison International Southern California Edison Company 379,438,053 Shares 434,888,104 Shares