UNITED STATES


SECURITIES AND EXCHANGE COMMISSION


WASHINGTON, DC 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 17, 2019











Commission File NumberExact Name of Registrant as Specified in Charter; State of Incorporation;Address and Telephone NumberIRS EmployerIdentification Number1-8962Pinnacle West Capital Corporation(an Arizona corporation)400 North Fifth Street, P.O. Box 53999Phoenix, AZ 85072-3999(602) 250-100086-05124311-4473Arizona Public Service Company(an Arizona corporation)400 North Fifth Street, P.O. Box 53999Phoenix, AZ 85072-3999(602) 250-100086-0011170





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:


Title of each classTrading Symbol(s)Name of each exchange on which registeredCommon StockPNWThe 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 (17 CFR §230.405) or Rule 12b-2 of the Securities Exchange Act of 1934 (17 CFR §240.12b-2). 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.  ̈








This combined Form 8-K is separately filed or furnished by Pinnacle West Capital Corporation and Arizona Public Service Company.  Each registrant is filing or furnishing on its own behalf all of the information contained in this Form 8-K that relates to such registrant and, where required, its subsidiaries.  Except as stated in the preceding sentence, neither registrant is filing or furnishing any information that does not relate to such registrant, and therefore makes no representation as to any such information.








---










Item 5.02 Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers.





Denise R. Danner, Vice President, Controller and Chief Accounting Officer of Pinnacle West Capital Corporation ("Pinnacle West") and Arizona Public Service Company ("APS" and together with Pinnacle West, the "Company"), informed the Company that she will retire from the Company effective July 19, 2019.











---










SIGNATURES








Pursuant to the requirements of the Securities Exchange Act of 1934, each registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.








PINNACLE WEST CAPITAL CORPORATION(Registrant)Dated:  May 21, 2019By: /s/ James R. HatfieldJames R. HatfieldExecutive Vice President andChief Financial OfficerARIZONA PUBLIC SERVICE COMPANY(Registrant)Dated: May 21, 2019By: /s/ James R. HatfieldJames R. HatfieldExecutive Vice President andChief Financial Officer