NWE at EEI Conference; maintains 2025 adjusted EPS $3.53–$3.65

Rhea-AI Filing Summary

NorthWestern Energy Group (Nasdaq: NWE) reaffirmed its adjusted 2025 non-GAAP earnings guidance of $3.53 to $3.65 per diluted share. Company leadership will attend the 60th EEI Financial Conference on November 10–11, 2025, and host one-on-one meetings with investors.

The slide presentation used for these meetings was furnished under Regulation FD as Exhibit 99.1 and incorporated by reference; it is not deemed “filed” for liability purposes.

8-K Event Classification

2 items: 7.01, 9.01

2 items

Item 7.01 Regulation FD Disclosure Disclosure

Material non-public information disclosed under Regulation Fair Disclosure, often investor presentations or guidance.

Item 9.01 Financial Statements and Exhibits Exhibits

Financial statements, pro forma financial information, and exhibit attachments filed with this report.

Understanding 8-K Material Events →

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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): November 10, 2025

NorthWestern Energy Group, Inc.

(Exact name of registrant as specified in its charter)

Delaware

000-56598

93-2020320

(State or other jurisdiction of incorporation or organization)

(Commission File Number)

(I.R.S. Employer Identification No.)

3010 W. 69th Street

Sioux Falls

South Dakota

57108

(Address of principal executive offices)

(Zip Code)

Registrant’s telephone number, including area code: 605-978-2900

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 (see General Instruction A.2. below):

☐ 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:

Registrant			Title of each class			Trading Symbol(s)			Name of each exchange on which registered
NorthWestern Energy Group, Inc.			Common stock			NWE			Nasdaq Stock Market LLC

Indicate by check mark whether the registrant is an emerging growth company as defined in 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 7.01 Regulation FD Disclosure.

On November 10-11, 2025, Brian Bird, president and chief executive officer, Crystal Lail, vice president and chief financial officer, Travis Meyer, director corporate development and investor relations officer, and Emilie Ng, treasurer, of NorthWestern Energy Group, Inc. d/b/a NorthWestern Energy (Nasdaq: NWE) (the “Company”) will be attending the 60th EEI Financial Conference in Hollywood, Florida, and hosting one-on-one meetings with existing and potential investors. During these meetings, they will be providing certain information concerning the Company in a slide presentation and will be reaffirming the Company's adjusted 2025 non-GAAP earnings guidance range of $3.53 to $3.65 per diluted share.

A copy of the presentation is being furnished pursuant to Regulation FD as Exhibit 99.1 to this Current Report on Form 8-K and is incorporated herein by reference. The information in the presentation will not be deemed to be “filed” for the purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to the liability of that section. Furthermore, the presentation will not be deemed to be incorporated by reference into the Company's filings under the Securities Act of 1933, as amended, or under the Securities Exchange Act of 1934, as amended, except as set forth with respect thereto in any such filing.

Item 9.01    Financial Statements and Exhibits.

Exhibit No.						Description of Document
99.1*						EEI Financial Conference Presentation, dated November 10, 2025
104						Cover Page Interactive Data File – the cover page XBRL tags are embedded within the Inline XBRL document
* filed herewith

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.

						NorthWestern Energy Group, Inc.
			By:			/s/ Timothy P. Olson
						Timothy P. Olson
						Corporate Secretary

Date: November 10, 2025

FAQ

What guidance did NWE reaffirm for 2025?

NorthWestern Energy reaffirmed adjusted 2025 non-GAAP EPS of $3.53 to $3.65 per diluted share.

What event is NWE attending according to the 8-K?

Executives are attending the 60th EEI Financial Conference on November 10–11, 2025 in Hollywood, Florida.

Which NWE executives are participating?

Participants include Brian Bird (CEO), Crystal Lail (CFO), Travis Meyer (IR), and Emilie Ng (Treasurer).

Is there an investor presentation available for NWE (NWE)?

Yes. A slide deck was furnished under Regulation FD as Exhibit 99.1 and incorporated by reference.

Is the presentation considered filed for liability purposes?

No. The presentation is furnished and not deemed “filed” under Section 18 of the Exchange Act.

What is the form type for this disclosure?

This disclosure was made on a Form 8-K under Item 7.01 Regulation FD.