10-K 1 aep10klegal20184q.htm AMERICAN ELECTRIC POWER 2018 10-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION FORM 10-K For the fiscal year ended December 31, 2018 WASHINGTON, D.C. 20549 (Mark One) ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 x ¨ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from __________ to_________ Securities registered pursuant to Section 12(b) of the Act: Commission File Number Registrants; States of Incorporation; Address and Telephone Number I.R.S. Employer Identification Nos. 1-3525 AMERICAN ELECTRIC POWER COMPANY, INC. (A New York Corporation) 13-4922640 333-221643 AEP TEXAS INC. (A Delaware Corporation) 51-0007707 333-217143 AEP TRANSMISSION COMPANY, LLC (A Delaware Limited Liability Company) 46-1125168 1-3457 APPALACHIAN POWER COMPANY (A Virginia Corporation) 54-0124790 1-3570 INDIANA MICHIGAN POWER COMPANY (An Indiana Corporation) 35-0410455 1-6543 OHIO POWER COMPANY (An Ohio Corporation) 31-4271000 0-343 PUBLIC SERVICE COMPANY OF OKLAHOMA (An Oklahoma Corporation) 73-0410895 1-3146 SOUTHWESTERN ELECTRIC POWER COMPANY (A Delaware Corporation) 1 Riverside Plaza, Columbus, Ohio 43215 Telephone (614) 716-1000 72-0323455 Registrant Title of each class Name of Each Exchange on Which Registered American Electric Power Company, Inc. Common Stock, $6.50 par value New York Stock Exchange AEP Texas Inc. None AEP Transmission Company, LLC None Appalachian Power Company None Indiana Michigan Power Company None Ohio Power Company None Public Service Company of Oklahoma None Southwestern Electric Power Company None