Groowe Groowe BETA / Newsroom
⏱ News is delayed by 15 minutes. Sign in for real-time access. Sign in

Form 8-K

sec.gov

8-K — AVISTA CORP

Accession: 0001193125-26-269388

Filed: 2026-06-12

Period: 2026-06-12

CIK: 0000104918

SIC: 4931 (ELECTRIC & OTHER SERVICES COMBINED)

Item: Other Events

Item: Financial Statements and Exhibits

Documents

8-K — ava-20260612.htm (Primary)

EX-99.1 (ava-ex99_1.htm)

GRAPHIC (img172667673_0.jpg)

XML — IDEA: XBRL DOCUMENT (R1.htm)

8-K

8-K (Primary)

Filename: ava-20260612.htm · Sequence: 1

8-K

false0000104918AVISTA CORP00001049182026-06-122026-06-12

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 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): June 12, 2026

AVISTA CORPORATION

(Exact name of Registrant as Specified in Its Charter)

Washington

001-03701

91-0462470

(State or Other Jurisdiction

of Incorporation)

(Commission File Number)

(IRS Employer

Identification No.)

1411 East Mission Avenue

Spokane, Washington

99202-2600

(Address of Principal Executive Offices)

(Zip Code)

Registrant’s Telephone Number, Including Area Code: 509 489-0500

(Former Name or Former Address, if Changed Since Last Report)

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 class

Trading

Symbol(s)

Name of each exchange on which registered

Common Stock

AVA

The 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 (§ 230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§ 240.12b-2 of this chapter).

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. ☐

Item 8.01 Other Events.

On June 12, 2026, Avista Corporation (Avista Corp. or the Company) issued a press release announcing it will take additional time to evaluate the processing of energy requests from new large data center developers as it seeks to partner with governmental agencies on creating a clear and coordinated planning process and as the Company considers additional stakeholder feedback.

This decision follows recent community interest and concern related to the Company's previously announced Memorandum of Understanding with a data center developer. Negotiations concerning energy service to this potential data center are now paused to allow time for this evaluation process.

A copy of the press release is filed as Exhibit 99.1 which is incorporated herein by reference.

Item 9.01 Financial Statements and Exhibits.

(d)

Exhibits

99.1

Press release dated June 12, 2026, which is being filed pursuant to Item 8.01.

104

Cover Page Interactive Data File  (embedded within the Inline XBRL document)

SIGNATURES

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

Avista Corporation

(Registrant)

Date:

June 12, 2026

By:

/s/ Kevin J. Christie

Kevin J. Christie

Senior Vice President, Chief Financial Officer,

Treasurer and Regulatory Affairs Officer

(Principal Financial Officer)

EX-99.1

EX-99.1

Filename: ava-ex99_1.htm · Sequence: 2

EX-99.1

Exhibit 99.1

Contact:

Avista 24/7 Media Access (509) 495-4174

Media: Jared Webley, jared.webley@avistacorp.com

Investors: Stacey Walters (509) 495-2046 stacey.walters@avistacorp.com

Avista pauses processing of energy service request from 500 MW data center developer while seeking broader policy and community alignment

Emphasis remains on commitment to transparency, customer protection and community engagement

Spokane, Wash. – June 12, 2026: Avista announced today it is taking additional time to evaluate the processing of energy requests from new large data center developers as it seeks to partner with governmental agencies on creating a clear and coordinated planning process and as the company considers additional stakeholder feedback.

Negotiations concerning energy service to this potential data center are now paused. The decision follows recent community interest and concern related to Avista’s previously announced Memorandum of Understanding (MOU) with the new 500MW data center developer.

“We’ve heard the questions and concerns from our customers, community members and local leaders, and we take that feedback seriously,” said Heather Rosentrater, Avista President and CEO. “This input has demonstrated a need for a broader coordinated planning effort, which Avista will actively participate in. As a regional energy provider, we are just one part of the project development process. We recognize that we need more time to align with our partners and communities in a way that is transparent, thoughtful and in the best long-term interest of our region.”

As a regulated utility, Avista is required to review requests for service, including large proposals like this. At the same time, the developer must secure all necessary permits for their project. No single entity decides if a project will proceed—multiple reviews and approvals are needed before a project may move forward.

Avista remains committed to collaborating with local leaders, regulators and community members. These conversations will help inform how large data center requests are considered moving forward and ensure alignment with broader regional priorities. For over 137 years, Avista has served large load energy customers that help support the economic health and vitality of the region.

What’s new now is the scale of the data center requests and level of public interest. These unprecedented projects require new considerations for planning and coordination for all entities involved.

Avista’s approach to providing energy service to any potential large data center development remains grounded in clear principles:

Customers come first: Existing customers will not pay for costs of serving a new large customer. Safeguards will be in place to prevent shifting of expenses to current customers.

System reliability is non-negotiable: There are required engineering studies and system upgrades that must be completed before any service begins.

Regulatory approval is required: Any final service agreement must be reviewed and approved by state regulators.

Growth must be responsible: Any large project must deliver net benefits for our customers.

These guiding principles have been central to Avista’s evaluation process and will continue to inform both the current pause and future decisions.

Projects involving large data centers are complex and involve multiple stakeholders beyond Avista, including developers, regional infrastructure partners, regulators and local communities. As the electric provider, Avista plays an important role in evaluating how a project could be served energy—but it is one part of a broader process that includes regulatory review, infrastructure planning and community input before any final decisions are made.

The company will continue to provide more information as it becomes available.

About Avista Corp.

Avista Corp. is an energy company involved in the production, transmission and distribution of energy as well as other energy-related businesses. Avista Utilities is the operating division that provides electric service to 429,000 customers and natural gas to 386,000 customers. Its service territory covers 34,000 square miles in eastern Washington, northern Idaho and parts of southern and eastern Oregon, with a population of 1.5 million. Alaska Energy and Resources Company is an Avista subsidiary that provides retail electric service in the city and borough of Juneau, Alaska, through its subsidiary Alaska Electric Light and Power Company. Avista stock is traded under the ticker symbol "AVA."  For more information about Avista, please visit www.avistacorp.com.

To unsubscribe from Avista’s news release distribution, send reply message to dalila.sheehan@avistacorp.com

-2619-

GRAPHIC

GRAPHIC

Filename: img172667673_0.jpg · Sequence: 3

Binary file (153323 bytes)

Download img172667673_0.jpg

XML — IDEA: XBRL DOCUMENT

XML

Filename: R1.htm · Sequence: 6

v3.26.1

Document And Entity Information

Jun. 12, 2026

Cover [Abstract]

Document Type

8-K

Amendment Flag

false

Document Period End Date

Jun. 12, 2026

Entity Registrant Name

AVISTA CORP

Entity Central Index Key

0000104918

Entity Emerging Growth Company

false

Entity File Number

001-03701

Entity Incorporation, State or Country Code

WA

Entity Tax Identification Number

91-0462470

Entity Address, Address Line One

1411 East Mission Avenue

Entity Address, City or Town

Spokane

Entity Address, State or Province

WA

Entity Address, Postal Zip Code

99202-2600

City Area Code

509

Local Phone Number

489-0500

Written Communications

false

Soliciting Material

false

Pre-commencement Tender Offer

false

Pre-commencement Issuer Tender Offer

false

Title of 12(b) Security

Common Stock

Trading Symbol

AVA

Security Exchange Name

NYSE

X

- Definition

Boolean flag that is true when the XBRL content amends previously-filed or accepted submission.

+ References

No definition available.

+ Details

Name:

dei_AmendmentFlag

Namespace Prefix:

dei_

Data Type:

xbrli:booleanItemType

Balance Type:

na

Period Type:

duration

X

- Definition

Area code of city

+ References

No definition available.

+ Details

Name:

dei_CityAreaCode

Namespace Prefix:

dei_

Data Type:

xbrli:normalizedStringItemType

Balance Type:

na

Period Type:

duration

X

- Definition

Cover page.

+ References

No definition available.

+ Details

Name:

dei_CoverAbstract

Namespace Prefix:

dei_

Data Type:

xbrli:stringItemType

Balance Type:

na

Period Type:

duration

X

- Definition

For the EDGAR submission types of Form 8-K: the date of the report, the date of the earliest event reported; for the EDGAR submission types of Form N-1A: the filing date; for all other submission types: the end of the reporting or transition period. The format of the date is YYYY-MM-DD.

+ References

No definition available.

+ Details

Name:

dei_DocumentPeriodEndDate

Namespace Prefix:

dei_

Data Type:

xbrli:dateItemType

Balance Type:

na

Period Type:

duration

X

- Definition

The type of document being provided (such as 10-K, 10-Q, 485BPOS, etc). The document type is limited to the same value as the supporting SEC submission type, or the word 'Other'.

+ References

No definition available.

+ Details

Name:

dei_DocumentType

Namespace Prefix:

dei_

Data Type:

dei:submissionTypeItemType

Balance Type:

na

Period Type:

duration

X

- Definition

Address Line 1 such as Attn, Building Name, Street Name

+ References

No definition available.

+ Details

Name:

dei_EntityAddressAddressLine1

Namespace Prefix:

dei_

Data Type:

xbrli:normalizedStringItemType

Balance Type:

na

Period Type:

duration

X

- Definition

Name of the City or Town

+ References

No definition available.

+ Details

Name:

dei_EntityAddressCityOrTown

Namespace Prefix:

dei_

Data Type:

xbrli:normalizedStringItemType

Balance Type:

na

Period Type:

duration

X

- Definition

Code for the postal or zip code

+ References

No definition available.

+ Details

Name:

dei_EntityAddressPostalZipCode

Namespace Prefix:

dei_

Data Type:

xbrli:normalizedStringItemType

Balance Type:

na

Period Type:

duration

X

- Definition

Name of the state or province.

+ References

No definition available.

+ Details

Name:

dei_EntityAddressStateOrProvince

Namespace Prefix:

dei_

Data Type:

dei:stateOrProvinceItemType

Balance Type:

na

Period Type:

duration

X

- Definition

A unique 10-digit SEC-issued value to identify entities that have filed disclosures with the SEC. It is commonly abbreviated as CIK.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 12

-Subsection b-2

+ Details

Name:

dei_EntityCentralIndexKey

Namespace Prefix:

dei_

Data Type:

dei:centralIndexKeyItemType

Balance Type:

na

Period Type:

duration

X

- Definition

Indicate if registrant meets the emerging growth company criteria.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 12

-Subsection b-2

+ Details

Name:

dei_EntityEmergingGrowthCompany

Namespace Prefix:

dei_

Data Type:

xbrli:booleanItemType

Balance Type:

na

Period Type:

duration

X

- Definition

Commission file number. The field allows up to 17 characters. The prefix may contain 1-3 digits, the sequence number may contain 1-8 digits, the optional suffix may contain 1-4 characters, and the fields are separated with a hyphen.

+ References

No definition available.

+ Details

Name:

dei_EntityFileNumber

Namespace Prefix:

dei_

Data Type:

dei:fileNumberItemType

Balance Type:

na

Period Type:

duration

X

- Definition

Two-character EDGAR code representing the state or country of incorporation.

+ References

No definition available.

+ Details

Name:

dei_EntityIncorporationStateCountryCode

Namespace Prefix:

dei_

Data Type:

dei:edgarStateCountryItemType

Balance Type:

na

Period Type:

duration

X

- Definition

The exact name of the entity filing the report as specified in its charter, which is required by forms filed with the SEC.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 12

-Subsection b-2

+ Details

Name:

dei_EntityRegistrantName

Namespace Prefix:

dei_

Data Type:

xbrli:normalizedStringItemType

Balance Type:

na

Period Type:

duration

X

- Definition

The Tax Identification Number (TIN), also known as an Employer Identification Number (EIN), is a unique 9-digit value assigned by the IRS.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 12

-Subsection b-2

+ Details

Name:

dei_EntityTaxIdentificationNumber

Namespace Prefix:

dei_

Data Type:

dei:employerIdItemType

Balance Type:

na

Period Type:

duration

X

- Definition

Local phone number for entity.

+ References

No definition available.

+ Details

Name:

dei_LocalPhoneNumber

Namespace Prefix:

dei_

Data Type:

xbrli:normalizedStringItemType

Balance Type:

na

Period Type:

duration

X

- Definition

Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 13e

-Subsection 4c

+ Details

Name:

dei_PreCommencementIssuerTenderOffer

Namespace Prefix:

dei_

Data Type:

xbrli:booleanItemType

Balance Type:

na

Period Type:

duration

X

- Definition

Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 14d

-Subsection 2b

+ Details

Name:

dei_PreCommencementTenderOffer

Namespace Prefix:

dei_

Data Type:

xbrli:booleanItemType

Balance Type:

na

Period Type:

duration

X

- Definition

Title of a 12(b) registered security.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 12

-Subsection b

+ Details

Name:

dei_Security12bTitle

Namespace Prefix:

dei_

Data Type:

dei:securityTitleItemType

Balance Type:

na

Period Type:

duration

X

- Definition

Name of the Exchange on which a security is registered.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 12

-Subsection d1-1

+ Details

Name:

dei_SecurityExchangeName

Namespace Prefix:

dei_

Data Type:

dei:edgarExchangeCodeItemType

Balance Type:

na

Period Type:

duration

X

- Definition

Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as soliciting material pursuant to Rule 14a-12 under the Exchange Act.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 14a

-Subsection 12

+ Details

Name:

dei_SolicitingMaterial

Namespace Prefix:

dei_

Data Type:

xbrli:booleanItemType

Balance Type:

na

Period Type:

duration

X

- Definition

Trading symbol of an instrument as listed on an exchange.

+ References

No definition available.

+ Details

Name:

dei_TradingSymbol

Namespace Prefix:

dei_

Data Type:

dei:tradingSymbolItemType

Balance Type:

na

Period Type:

duration

X

- Definition

Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as written communications pursuant to Rule 425 under the Securities Act.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Securities Act

-Number 230

-Section 425

+ Details

Name:

dei_WrittenCommunications

Namespace Prefix:

dei_

Data Type:

xbrli:booleanItemType

Balance Type:

na

Period Type:

duration