Page 1

Commission File Number 001-14881 001-05152 333-90553 333-15387 000-52378 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington , D.C. 20549 FORM 10 - Q ☑Quarterly Report Pursuant to Section 13 or 15 ( d ) of the Securities Exchange Act of 1934 For the quarterly period ended June 30 , 2026 or Transition Report Pursuant to Section 13 or 15 ( d ) of the Securities Exchange Act of 1934 For the transition period from to Exact name of registrant as specified in its charter State or other jurisdiction of incorporation or organization Address of principal executive offices Registrant's telephone number , including area code BERKSHIRE HATHAWAY ENERGY COMPANY ( An Iowa Corporation ) 1615 Locust Street Des Moines , Iowa 50309-3037 515-242-4300 PACIFICORP ( An Oregon Corporation ) 825 N.E. Multnomah Street Portland , Oregon 97232 888-221-7070 MIDAMERICAN FUNDING , LLC ( An Iowa Limited Liability Company ) 1615 Locust Street Des Moines , Iowa 50309-3037 515-242-4300 MIDAMERICAN ENERGY COMPANY ( An Iowa Corporation ) 1615 Locust Street Des Moines , Iowa 50309-3037 515-242-4300 NEVADA POWER COMPANY ( A Nevada Corporation ) 6226 West Sahara Avenue Las Vegas , Nevada 89146 702-402-5000 IRS Employer Identification No. 94-2213782 93-0246090 47-0819200 42-1425214 88-0420104 000-00508 SIERRA PACIFIC POWER COMPANY ( A Nevada Corporation ) 88-0044418 001-37591 333-266049 6100 Neil Road Reno , Nevada 89511 775-834-4011 EASTERN ENERGY GAS HOLDINGS , LLC ( A Virginia Limited Liability Company ) 10700 Energy Way Glen Allen , Virginia 23060 804-613-5100 EASTERN GAS TRANSMISSION AND STORAGE , INC . ( A Delaware Corporation ) 10700 Energy Way Glen Allen , Virginia 23060 804-613-5100 N / A ( Former name , former address and former fiscal year , if changed since last report ) 46-3639580 55-0629203