SUPPLEMENTAL INDENTURE NO. 4 FROM OGE ENERGY CORP. TO BOKF, N.A. TRUSTEE DATED AS OF MAY 27, 2021 SUPPLEMENTAL TO INDENTURE DATED AS OF NOVEMBER 1, 2004Oklahoma Gas & Electric Co • May 27th, 2021 • Electric services • Oklahoma
SUPPLEMENTAL INDENTURE No. 4, made as of the 27th day of May, 2021, by and between OGE ENERGY CORP., a corporation duly organized and existing under the laws of the State of Oklahoma (the “Company”), and BOKF, N.A., a national banking association, as trustee (the “Trustee”):
