Avista Utilities, Inc.

Form 5500

AVISTA CORPORATION

1411 E Mission Avenue, Spokane, Wa 99202 (509) 489-0500 EIN:91-0462470 Plan Admin:Mary Prince

Year	Plan Name	Participants BOY/EOY	Assets BOY/EOY
2022	Plan NameINVESTMENT & EMPLOYEE STOCK OWNERSHIP PLAN OF AVISTA Plan #003 Participants BOY/EOY2,495 / 2,602 Assets BOY/EOY$788,839,334 / $669,552,378	2022	INVESTMENT & EMPLOYEE STOCK OWNERSHIP PLAN OF AVISTA - Plan #003	2,495 / 2,602	$788,839,334 / $669,552,378
2022	Plan NameRETIREMENT PLAN FOR EMPLOYEES OF THE AVISTA CORPORATION Plan #001 Participants BOY/EOY2,613 / 2,531 Assets BOY/EOY$792,796,049 / $579,500,629	2022	RETIREMENT PLAN FOR EMPLOYEES OF THE AVISTA CORPORATION - Plan #001	2,613 / 2,531	$792,796,049 / $579,500,629
2021	Plan NameRETIREMENT PLAN FOR EMPLOYEES OF THE AVISTA CORPORATION Plan #001 Participants BOY/EOY2,646 / 2,613 Assets BOY/EOY$761,063,472 / $792,796,049	2021	RETIREMENT PLAN FOR EMPLOYEES OF THE AVISTA CORPORATION - Plan #001	2,646 / 2,613	$761,063,472 / $792,796,049
2021	Plan NameINVESTMENT & EMPLOYEE STOCK OWNERSHIP PLAN OF AVISTA Plan #003 Participants BOY/EOY2,461 / 2,495 Assets BOY/EOY$686,697,487 / $788,839,334	2021	INVESTMENT & EMPLOYEE STOCK OWNERSHIP PLAN OF AVISTA - Plan #003	2,461 / 2,495	$686,697,487 / $788,839,334
2020	Plan NameRETIREMENT PLAN FOR EMPLOYEES OF THE AVISTA CORPORATION Plan #001 Participants BOY/EOY2,716 / 2,646 Assets BOY/EOY$661,331,031 / $761,063,472	2020	RETIREMENT PLAN FOR EMPLOYEES OF THE AVISTA CORPORATION - Plan #001	2,716 / 2,646	$661,331,031 / $761,063,472
2020	Plan NameINVESTMENT & EMPLOYEE STOCK OWNERSHIP PLAN OF AVISTA Plan #003 Participants BOY/EOY2,347 / 2,461 Assets BOY/EOY$614,381,594 / $686,697,487	2020	INVESTMENT & EMPLOYEE STOCK OWNERSHIP PLAN OF AVISTA - Plan #003	2,347 / 2,461	$614,381,594 / $686,697,487
2019	Plan NameRETIREMENT PLAN FOR EMPLOYEES OF THE AVISTA CORPORATION Plan #001 Participants BOY/EOY2,717 / 2,716 Assets BOY/EOY$563,548,034 / $661,331,031	2019	RETIREMENT PLAN FOR EMPLOYEES OF THE AVISTA CORPORATION - Plan #001	2,717 / 2,716	$563,548,034 / $661,331,031
2019	Plan NameINVESTMENT & EMPLOYEE STOCK OWNERSHIP PLAN OF AVISTA Plan #003 Participants BOY/EOY2,338 / 2,399 Assets BOY/EOY$509,899,894 / $614,381,594	2019	INVESTMENT & EMPLOYEE STOCK OWNERSHIP PLAN OF AVISTA - Plan #003	2,338 / 2,399	$509,899,894 / $614,381,594